CN111399219A - Virtual reality lens group, equipment and system - Google Patents
Virtual reality lens group, equipment and system Download PDFInfo
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- CN111399219A CN111399219A CN201910148733.2A CN201910148733A CN111399219A CN 111399219 A CN111399219 A CN 111399219A CN 201910148733 A CN201910148733 A CN 201910148733A CN 111399219 A CN111399219 A CN 111399219A
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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Abstract
The application relates to a virtual reality lens group, equipment and a system. Comprises a main body; at least one set of lens assemblies mounted on the body; each group of lens components comprises a first lens part and a second lens part, and the first lens part and the second lens part are configured to be sequentially arranged along the direction of an optical axis from the eyes of a viewer to the imaging side; the adjusting component is in transmission connection with at least one of the first lens part and the second lens part in each group of lens components; in each group of lens components, one of the first lens part and the second lens part moves relative to the other to change the relative position relationship between the two. Above-mentioned virtual reality mirror group, equipment and system through the relative position who adjusts first lens portion and second lens portion, change the formation of image position of object, make different vision level's user can both see clear profile, have solved the user that causes by wearing glasses and bear a burden and increase, bridge of the nose and ear position damage, arouse that the user uses not convenient problem.
Description
Technical Field
The application relates to the technical field of virtual reality, in particular to a virtual reality lens group, equipment and a system.
Background
The virtual reality technology is a computer simulation system which is provided in the beginning of the 20 th century and the 80 th era and can create and experience a virtual world, a virtual environment which simulates multiple senses of human vision, hearing, touch and the like is generated by a computer, and the system is a system simulation of multi-source information fusion, interactive three-dimensional dynamic vision and entity behaviors, so that a user can observe things in a three-dimensional space in time as if the user is personally on the scene, and can be aware of the environment of the body.
Traditional virtual reality mirror group adopts traditional lens, and traditional lens obtains enlarged virtual image according to healthy eyesight standard design image distance, and the image that enlargies on the display screen can be seen through the eyepiece to the eyes. For myopia and hyperopia groups, glasses are required to be worn to obtain clear pictures before the user wears the helmet, but the user can bear heavy load when wearing the helmet after wearing the glasses, the damage to the bridge of the nose and the ears is caused, and the user is not convenient enough to use.
Disclosure of Invention
Therefore, it is necessary to provide a virtual reality lens set suitable for the group with myopia, hyperopia and myopia aiming at the problem that the helmet is not convenient to wear for the group with myopia and hyperopia.
It is also necessary to provide a virtual reality device having the virtual reality lens group.
It is further necessary to provide a virtual reality system having the virtual reality apparatus.
A set of virtual reality lenses, comprising:
a main body;
at least one set of lens assemblies mounted on the body; each group of the lens components comprises a first lens part and a second lens part which are configured to be sequentially arranged along the direction of an optical axis from the human eyes of a viewer to the imaging side; and
an adjustment assembly in driving connection with at least one of the first lens portion and the second lens portion of each set of the lens assemblies;
wherein, based on the driving of the adjusting component, the relative position relationship between the first lens part and the second lens part in each group of the lens components when one of the first lens part and the second lens part moves relative to the other lens part changes;
the relative position relationship comprises a first relative position in a flat mirror state, a second relative position in a near mirror state and a third relative position in a far mirror state in the same direction.
The virtual reality lens group changes the relative position relationship between the first lens part and the second lens part through the adjusting component, so that the corresponding lens component can be switched among a flat lens state, a near lens state and a far lens state to meet the requirements of viewers with different vision conditions; for example, a group with normal vision can be adjusted to a flat mirror state, a group with myopia can be adjusted to a near mirror state, and even a group with hyperopia can be adjusted to a far mirror state, so that three different viewing groups can be met by only using one virtual reality lens group.
In one embodiment, the first lens part and the second lens part in each group of the lens assemblies are arranged in the same plane perpendicular to the optical axis, and the relative position relationship between the first lens part and the second lens part in the plane of each group of the lens assemblies can be changed based on the driving of the adjusting assembly.
The first lens part and the second lens part are arranged in the same plane perpendicular to the optical axis, so that the relative position relation of the first lens part and the second lens part in the plane where the first lens part and the second lens part are located is changed in a mode of being opposite to the optical axis.
In one embodiment, the first lens part and the second lens part in each group of the lens assembly are parallel to each other along the optical axis direction and are arranged at intervals in the same plane perpendicular to the optical axis, and the extending directions of the first lens part and the second lens part are both perpendicular to the optical axis direction;
at least one of the first lens part and the second lens part can translate along the extending direction of the lens part relative to the optical axis.
At least one of the first lens part and the second lens part is arranged in the same plane vertical to the optical axis in a translation mode, and the relative position relation of the first lens part and the second lens part can be changed under the driving of the adjusting component, so that the watching groups with different vision conditions can be matched. In one embodiment, the first lens part and the second lens part in each group of the lens assembly are arranged in the same plane perpendicular to the optical axis along the up-down direction of the human eyes of the observer; the first lens part and the second lens part in each group of the lens components are arranged at intervals along the direction parallel to the optical axis;
at least one of the first lens portion and the second lens portion of each group of the lens assemblies can translate up and down relative to the human eye of the viewer based on the driving of the adjusting assembly, so that each group of the lens assemblies can be switched among a flat mirror state, a near mirror state and a far mirror state.
The first lens part and the second lens part are arranged in the same plane vertical to the optical axis in a vertical translation mode, and the relative position relation of the first lens part and the second lens part can be changed under the driving of the adjusting component, so that the watching groups with different vision conditions can be matched.
In one embodiment, one of the first lens portion and the second lens portion is held stationary with respect to an optical axis, and the other is translated with respect to the one held stationary; or
The first lens portion and the second lens portion are mutually translated relative to an optical axis.
The first lens part and the second lens part can be arranged in the same plane vertical to the optical axis in a mode of translation or mutual translation of the first lens part and the second lens part, and the relative position relation of the first lens part and the second lens part can be changed under the driving of the adjusting component, so that the watching groups with different vision conditions can be matched.
In one embodiment, the first lens portion includes a first curved surface having a first concave section and a first convex section, and the second lens portion includes a second curved surface having a second concave section and a second convex section; upon actuation of the adjustment assembly, one of the first and second lens portions is movable relative to the other to one of the following positions:
the first relative position where the first projecting segment is complementary to the second recessed segment and the second projecting segment is complementary to the first recessed segment;
the second relative position at which the first recessed section and the second recessed section at least partially coincide in the optical axis direction;
and the first protruding section and the second protruding section are at least partially overlapped at the third relative position along the optical axis direction.
Can adjust first lens portion and second lens portion at the relative position with the optical axis vertical direction through adjusting device to change the combination of the sunken section of first lens portion and second lens portion and protruding section, change the focus position, make the user of different eyesight circumstances can both see clear profile, adapt to the different colony of watching.
In one embodiment, the first concave section and the first convex section are arranged along an extending direction of the first lens portion, and the second concave section and the second convex section are arranged along an extending direction of the second lens portion;
and in the same direction, the arrangement direction of the first concave section and the first convex section is opposite to the arrangement direction of the second concave section and the second convex section.
By reversely arranging the concave sections and the convex sections of the first lens part and the second lens part, the concave sections and the convex sections of the first lens part and the second lens part are combined to form a viewing group suitable for different vision conditions in the translation process.
In one embodiment, the first lens portion includes a first flat surface disposed away from the first curved surface, and the second lens portion includes a second flat surface disposed away from the second curved surface; the first plane and the second plane are arranged facing each other.
The side, facing each other, of the first lens part and the second lens part is set to be a plane, so that when the relative position of the first lens part and the second lens part in the direction perpendicular to the optical axis of the adjusting component is changed, the interval between the first lens part and the second lens part is kept unchanged, and the change of the curvature of the first curved surface of the first lens part and the curvature of the second curved surface of the second lens part is changed into the image position, so that the change of the image position can be more moderate, the burden of human eyes caused by the sudden change of sight can be reduced, and the adjustability is better.
In one embodiment, the adjusting assembly includes a driving portion for generating a driving force and a transmission portion in transmission connection between the driving portion and at least one of the first lens portion and the second lens portion of each group of the lens assemblies.
The driving part is used for providing driving force for the movement of the lens assembly, and the power of the driving part is transmitted to the corresponding first lens part and/or the second lens part through the transmission part, so that the relative position is changed through the movement of the first lens part and/or the second lens part, and the image position is changed.
In one embodiment, the driving part is a gear, the transmission part is a rack engaged with the gear, and the direction of the rotation axis of the gear, the direction of the optical axis and the changing direction of the relative position relation are perpendicular to each other.
The first lens part and/or the second lens part are driven through the cooperation of the gear and the rack so as to change the imaging position. In one embodiment, the adjusting assembly for driving each group of the lens assemblies includes a gear, a first rack and a second rack, the first rack is connected between the gear and the first lens portion in a transmission manner, the second rack is connected between the gear and the second lens portion in a transmission manner, and the extending direction of the first rack and the second rack is parallel to the changing direction of the relative position relationship of the first lens portion and the second lens portion in each group of the lens members.
The first rack and the second rack can be driven to move through the sliding gear, so that the first lens part and the second lens part are driven to move in the direction perpendicular to the optical axis, the relative positions of the first lens part and the second lens part are changed, and the imaging position is changed.
A set of virtual reality lenses, comprising:
a main body;
an imaging assembly mounted on the body; and
a focusing assembly mounted on the main body and positioned between the eyes of the viewer and the imaging assembly;
the focusing assembly comprises at least one group of lens assemblies, each group of lens assemblies comprises a first lens part and a second lens part, and the first lens part and the second lens part are configured to be sequentially arranged along the direction of an optical axis from human eyes of a viewer to the imaging assembly;
wherein the first lens part and the second lens part in each group of the lens components can be combined under the action of external force to form one of a convex lens, a concave lens and a flat lens which are matched with the vision of a viewer.
Above-mentioned virtual reality mirror group changes the relative position relation between first lens portion and the second lens portion through adjusting part for correspond one in the lens subassembly combination forms the convex lens, concave lens and the plano mirror that match viewer's eyesight, thereby realize only using a virtual reality mirror group alright satisfy three kinds of different viewing crowds. In one embodiment, the focusing assembly further comprises an adjusting assembly, and the adjusting assembly is in transmission connection with at least one of the first lens part and the second lens part in each group of the lens assemblies so as to change the combination relationship of the first lens part and the second lens part.
An adjustment assembly is provided to facilitate adjustment of the combination between the first lens portion and the second lens portion by a viewer directly by operating the adjustment assembly.
In one embodiment, the first lens part and the second lens part in each group of the lens assembly are parallel to each other along the optical axis direction and are arranged in the same plane perpendicular to the optical axis at intervals;
the first lens part comprises a first curved surface and a first plane which is arranged back to the first curved surface, the second lens part comprises a second curved surface and a second plane which is arranged back to the second curved surface, and the first plane and the second plane are arranged in a mutually facing mode;
the first curved surface is provided with a first concave section and a first convex section along the extending direction of the first lens part, the second curved surface is provided with a second concave section and a second convex section along the extending direction of the first lens part, and the extending directions of the first lens part and the second lens part are both vertical to the direction of an optical axis;
upon actuation of the adjustment component, at least one of the first and second lens portions translates in its own extension direction relative to the optical axis and forms one of the following mirror structures:
the first concave section and the second concave section partially coincide and are combined to form the concave lens;
the first convex section and the second convex section are partially overlapped and combined to form the convex lens;
the first convex section is complementary with the second concave section and the second convex section is complementary with the first concave section and combined to form a flat mirror.
Can adjust first lens portion and second lens portion at the relative position with the optical axis vertical direction through adjusting device to change the combination of the sunken section of first lens portion and second lens portion and protruding section, change the focus position, make the user of different eyesight circumstances can both see clear profile, adapt to the different colony of watching. Meanwhile, the mutually facing sides of the first lens part and the second lens part are set to be a plane, so that when the relative positions of the first lens part and the second lens part in the direction perpendicular to the optical axis of the adjusting component are changed, the interval between the first lens part and the second lens part is kept unchanged, and the change of the curvature of the first curved surface of the first lens part and the curvature of the second curved surface of the second lens part is changed into the image position, so that the change of the image position can be more moderate, the burden of human eyes caused by abrupt change of sight can be reduced, and the adjustability is better.
In one embodiment, the adjusting assembly includes a driving portion for generating a driving force and a transmission portion in transmission connection between the driving portion and at least one of the first lens portion and the second lens portion of each group of the lens assemblies.
The driving part is used for providing driving force for the movement of the lens assembly, and the power of the driving part is transmitted to the corresponding first lens part and/or the second lens part through the transmission part, so that the relative position is changed through the movement of the first lens part and/or the second lens part, and the image position is changed.
In one embodiment, the adjusting component for driving each set of the lens elements includes a gear, a first rack and a second rack, the first rack is connected between the gear and the first lens portion in a transmission manner, the second rack is connected between the second rack and the second lens portion in a transmission manner, and the extending directions of the first rack and the second rack are parallel to the changing direction of the relative position relationship of the first lens portion and the second lens portion in each set of the lens elements.
The first rack and the second rack can be driven to move through the sliding gear, so that the first lens part and the second lens part are driven to move in the direction perpendicular to the optical axis, the relative positions of the first lens part and the second lens part are changed, and the imaging position is changed.
The utility model provides a virtual reality equipment, includes body and foretell virtual reality mirror group, virtual reality mirror group assemble in on the body.
In the virtual reality device, an imaging side (generally, an imaging lens), a first lens and a second lens are sequentially arranged from an object side to an object side along an optical axis direction, and light rays are emitted from the object side and then sequentially imaged through the imaging side, the first lens and the second lens, so that eyes can receive corresponding imaging information. Simultaneously, can change the formation of image position of object through changing relative position between first lens portion and the second lens portion two to make the user of different eyesight levels can both see clear profile, solved by wearing the user that glasses caused to bear a burden increase, nose bridge and ear position damage, arouse that the user uses inconvenient problem.
A virtual reality system comprises the virtual reality device and a display device, wherein the display device is detachably assembled on the body, and the virtual reality mirror group is configured to be positioned between human eyes of a viewer and the display device.
In the virtual reality system, the imaging side (usually, imaging lens), the first lens and the second lens are sequentially arranged from the object side to the object side along the optical axis direction, and after light is emitted from the object side, the light sequentially passes through the imaging side, the first lens and the second lens to be imaged, so that the eyes can receive corresponding imaging information. Simultaneously, can change the formation of image position of object through changing relative position between first lens portion and the second lens portion two to make the user of different eyesight levels can both see clear profile, solved by wearing the user that glasses caused to bear a burden increase, nose bridge and ear position damage, arouse that the user uses inconvenient problem.
Drawings
FIG. 1 is a schematic view of a virtual reality lens assembly according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the virtual reality lens group shown in FIG. 1 in a myopia state;
FIG. 3 is a schematic view of the virtual reality lens group shown in FIG. 1 in a telephoto state;
FIG. 4 is a block diagram of an embodiment of an adjustment assembly of the virtual reality lens group shown in FIG. 1;
FIG. 5 is a schematic view of a virtual reality lens assembly according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described more fully below by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
A virtual reality helmet, i.e., a VR head-mounted display (virtual reality head-mounted display device), as one type of virtual reality device, uses a head-mounted display to block the human vision and auditory sense from the outside, and guides a user to generate a sense of being in a virtual environment.
The application takes the application of a virtual reality lens group to a virtual reality helmet as an example, and explains the specific structure of the virtual reality lens group; however, this embodiment is only used as an example and does not limit the technical scope of the present invention. In addition, the drawings in the embodiments also omit unnecessary components to clearly show the technical features of the invention. It is understood that, in other embodiments, the virtual reality lens group can also be applied to other virtual reality devices and systems, and is not limited herein.
Referring to fig. 1-3, in the first embodiment of the present application, the virtual reality lens assembly 100 is used for viewing an image at an image side (for example, the imaging assembly 200 in fig. 2 and 3), and includes a main body (not shown), at least one lens assembly 10, and an adjusting assembly 30. The subject is in a virtual reality helmet, which can be a component worn by a user, and can also be a component used for assembling the virtual reality lens group 100 on the virtual reality helmet. At least one set of lens assemblies 10 is mounted on the body for correspondence with at least one of the left or right eyes of a viewer. The adjustment assembly 30 is used to adjust the lens assembly 10 to a state matching the viewer's vision in accordance with user manipulation. Wherein the state matching the viewer's vision includes a flat lens state matching the normal-vision person (as shown in fig. 1), a near lens state matching the near vision group (as shown in fig. 2), and a far vision lens state matching the far vision group (as shown in fig. 3).
Generally, the lens assemblies 10 mounted on the main body include two lens assemblies 10, and the two lens assemblies 10 correspond to the left and right eyes of the viewer respectively, and each lens assembly 10 can be adjusted to one of a flat state, a near-sighted state and a far-sighted state according to the vision requirement of the corresponding eye of the viewer. It is understood that in other embodiments, the lens assembly 10 may only include one set corresponding to one of the left eye or the right eye (this case is usually used for the viewer with abnormal single-eye vision, and one set of the lens assembly 10 is used for one eye with abnormal viewer vision) mounted on the main body, which is not limited herein.
Each group of lens assemblies 10 includes a first lens portion 12 and a second lens portion 14, and the first lens portion 12 and the second lens portion 14 are arranged in order along the optical axis direction from the human eye of the viewer to the imaging side. The adjusting assembly 30 is in driving connection with at least one of the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10; based on the driving of the adjusting assembly 30, the relative positional relationship between the first lens part 12 and the second lens part 14 in each set of lens assembly 10 that moves relative to each other changes. The relative positional relationship of the first lens portion 12 and the second lens portion 14 includes a first relative position in a flat lens state (as shown in fig. 1, i.e., for a normal-vision group), a second relative position in a near-vision state (as shown in fig. 2, i.e., for a near-vision group), and a third relative position in a far-vision state (as shown in fig. 3, i.e., for a far-vision group) in the same direction.
That is, in the present application, during the use of the virtual reality lens group 100, the user can adjust the relative positions of the first lens portion 12 and the second lens portion 14 in the direction perpendicular to the optical axis through the adjusting assembly 30 according to his own eyesight, such that the first lens portion 12 and the second lens portion 14 in each set of lens assembly 10 combine to form one of a flat mirror (as shown in fig. 1, i.e., the first lens portion 12 and the second lens portion 14 are in a flat mirror state), a concave lens (as shown in fig. 2, i.e., the first lens portion 12 and the second lens portion 14 are in a near mirror state), and a convex lens (as shown in fig. 3, i.e., the first lens portion 12 and the second lens portion 14 are in a distance mirror state) that matches the vision of the viewer, thereby adjusting the use of the lens assembly 10 for viewing images so that the virtual reality mirror assembly 100 can satisfy a variety of user groups with normal vision, near vision, and far vision.
Specifically, the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10 are arranged in the same plane perpendicular to the optical axis, and the relative positional relationship between the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10 in the plane of the first lens portion 12 and the second lens portion 14 may be changed based on the driving of the adjusting assembly 30.
In one embodiment, the first lens portion 12 and the second lens portion 14 of each group of lens assemblies 10 are arranged in the same plane perpendicular to the optical axis in the up-down direction of the human eye of the viewer (i.e., in a vertical plane perpendicular to the optical axis), and the first lens portion 12 and the second lens portion 14 of each group of lens assemblies 10 are spaced apart in a direction parallel to the optical axis.
Based on the driving of the adjusting assembly 30, the relative position relationship between the first lens portion 12 and the second lens portion 14 in the plane of each lens assembly 10 can be changed. Specifically, based on the driving of the adjusting assembly 30, at least one of the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10 can be translated up and down in a plane (i.e. the vertical plane perpendicular to the optical axis mentioned above) relative to the human eye of the viewer, so that each group of lens assemblies 10 can be switched among a flat mirror state, a near mirror state and a far mirror state.
In another embodiment, the first lens portion 12 and the second lens portion 14 of each group of lens assemblies 10 are arranged in the same plane perpendicular to the optical axis (i.e. in a horizontal plane perpendicular to the optical axis) in the left-right direction of the eyes of the viewer, and the first lens portion 12 and the second lens portion 14 of each group of lens assemblies 10 are arranged at intervals in the direction parallel to the optical axis.
Based on the driving of the adjusting assembly 30, the relative position relationship between the first lens portion 12 and the second lens portion 14 in the plane of each lens assembly 10 can be changed. Specifically, based on the driving of the adjusting assembly 30, at least one of the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10 can be translated left and right in the plane of the lens assembly (i.e. the horizontal plane perpendicular to the optical axis mentioned above) relative to the human eye of the viewer, so that each group of lens assemblies 10 can be switched between the flat mirror state, the near mirror state and the far mirror state.
In the two embodiments, the extending directions of the first lens portion 12 and the second lens portion 14 are both perpendicular to the optical axis direction, and at least one of the first lens portion 12 and the second lens portion 14 can translate along its extending direction relative to the optical axis based on the driving of the adjusting component 30.
Specifically, the relative positions of the first lens part 12 and the second lens part 14 in each lens assembly 10 can be changed by the following two movement modes:
one of the first lens portion 12 and the second lens portion 14 is kept stationary with respect to the optical axis, and the other is translated with respect to the stationary one (including the above-mentioned up-and-down translation in the vertical plane perpendicular to the optical axis and the above-mentioned left-and-right translation in the horizontal plane perpendicular to the optical axis);
second, the first lens portion 12 and the second lens portion 14 are mutually translated with respect to the optical axis (including the above-described vertical translation in the vertical plane perpendicular to the optical axis and the horizontal translation in the horizontal plane perpendicular to the optical axis).
More specifically, the first lens portion 12 includes a first curved surface 120 having a first concave section 1201 and a first convex section 1203 (note which reference object is concave and convex), and the second lens portion 14 includes a second curved surface 140 having a second concave section 1401 and a second convex section 1403. Here, the "concave" and the "convex" described in the first concave section 1201 and the first convex section 1203 are both planes (which pass through the first lens portion 12 in a direction perpendicular to the optical axis) relative to the same perpendicular optical axis, and both the first concave section 1201 and the first convex section 1203 are formed by inward concave and outward convex of the planes, respectively. Similarly, the "recess" and the "protrusion" described in the second recess section 1401 and the second protrusion section 1403 are also referred to as a plane (a plane passing through the second lens portion 14 in a direction perpendicular to the optical axis) relative to the same perpendicular optical axis, and both the second recess section 1401 and the second protrusion section 1403 are formed by the plane being recessed inward and protruding outward, respectively.
When the first curved surface 120 of the first lens portion 12 and the second curved surface 140 of the second lens portion 14 are set to be non-rotationally symmetrical curved surfaces including both the concave curved surface and the convex curved surface, the requirements of users with different visual degrees can be met, the size of the mirror group is reduced, and the convenience in use of the virtual reality mirror group is improved.
Upon actuation of the adjustment assembly 30, one of the first and second lens portions 12, 14 is movable relative to the other to one of the following positions:
a first relative position (i.e., flat mirror state) where first protruding section 1203 is complementary to second recessed section 1401 and second protruding section 1403 is complementary to first recessed section 1201, as shown in fig. 1.
A second relative position where the first concave section 1201 and the second concave section 1401 at least partially coincide in the optical axis direction (i.e., a myopic state); specifically, as shown in fig. 2, when the first concave section 1201 and the second concave section 1401 are overlapped on the optical axis, the light rays emitted from different parts of the object pass through the first lens part 12, the second lens part 14 and the imaging side, and then the opposite extension lines of the emitted light rays intersect and are gathered on the image surface, so that the myope can see a clear object image; meanwhile, through the adjustment of the adjustment assembly 30, the relative position of the first lens part 12 and the second lens part 14 in the direction perpendicular to the optical axis can change the curvature of the light passing area, so that the image position can be changed, and the myopes with different degrees can see clear pictures.
A third relative position where the first projecting section 1203 and the second projecting section 1403 at least partially coincide in the optical axis direction (i.e., a telephoto mirror state); specifically, as shown in fig. 3, when the first protruding segment 1203 and the second protruding segment 1403 are overlapped on the optical axis, the light rays emitted from different parts of the object pass through the first lens part 12, the second lens part 14 and the imaging side, and then the emitted light rays are intersected and gathered on the image plane, so that a hyperopic patient can see clear object outlines and real texture; meanwhile, through the adjustment of the adjustment assembly 30, the relative position of the first lens part 12 and the second lens part 14 in the direction perpendicular to the optical axis can change the curvature of the light passing area, so that the image position can be changed, and the patients with far vision of different degrees can see clear pictures.
In this embodiment, the first curved surface 120 and the second curved surface 140 are smooth transition curved surfaces, which can make the change of the intersection position of the light lines smooth when the adjusting assembly 30 adjusts the relative positions of the first lens portion 12 and the second lens portion 14 in the direction perpendicular to the optical axis, so as to reduce the fatigue of human eyes caused by abrupt change of sight.
Meanwhile, the first concave section 1201 and the first convex section 1203 are arranged in the extending direction of the first lens portion 12, and the second concave section 1401 and the second convex section 1403 are arranged in the extending direction of the second lens portion 14. And in the same direction, the arrangement direction of the first concave sections 1201 and the first convex sections 1203 is opposite to the arrangement direction of the second concave sections 1401 and the second convex sections 1403. Taking the up-down direction along the eyes of the viewer as an example, when the first concave section 1201 and the first convex section 1203 are arranged from the bottom to the top, the second concave section 1401 and the second convex section 1403 are arranged from the top to the bottom.
In one embodiment, the first lens portion 12 further includes a first flat surface 112 disposed opposite to the first curved surface 120, and the second lens portion 14 further includes a second flat surface 132 disposed opposite to the second curved surface 140, wherein the first flat surface 112 and the second flat surface 132 are disposed facing each other. That is, the first lens portion 12 and the second lens portion 14 in each set of lens assembly 10 are arranged in a plane-to-plane manner (i.e., back-to-back).
Since the first curved surface 120 of the first lens portion 12 and the second curved surface 140 of the second lens portion 14 both include a concave section and a convex section, when the relative position relationship between the first lens portion 12 and the second lens portion 14 changes based on the driving of the adjusting assembly 30, the curvature of the lens assembly 10 also changes correspondingly, so that the intersection positions of the light rays after passing through the first lens portion 12, the second lens portion 14 and the imaging component (e.g. the imaging lens in fig. 2) on the imaging side are different, and thus the imaging positions are different, so as to match viewers with different vision conditions.
Meanwhile, the side of the first lens portion 12 facing the second lens portion 14 is set to be a plane, so that when the relative position of the first lens portion 12 and the second lens portion 14 in the direction perpendicular to the optical axis of the adjusting assembly 30 is changed, the distance between the first lens portion 12 and the second lens portion 14 is kept unchanged, and the change of the image position is changed only by the curvature change of the first curved surface 120 of the first lens portion 12 and the second curved surface 140 of the second lens portion 14, so that the change of the image position can be more gradual, the burden on human eyes caused by the abrupt change of the sight line can be reduced, and the adjustability is better.
In one embodiment, the first curved surface 120 in the first lens portion 12 and the second curved surface 140 in the second lens portion 14 both have a thickness difference H (i.e., a height difference of the first concave section 1201 and the first convex section 1203) in the optical axis direction, i.e., curvatures of the first lens portion 12 and the second lens portion 14 are different when they are located at different relative positions.
In the present embodiment, the minimum thickness of the first lens portion 12 and the second lens portion 14 in the optical axis direction is 0.5mm, and the maximum thickness is 8 mm. When the minimum thicknesses of the first lens portion 12 and the second lens portion 14 in the optical axis direction are both less than 0.5mm, the processing difficulty is high, the corresponding production cost is increased, and the working stability is also affected by the too small thicknesses of the first lens portion 12 and the second lens portion 14; when the maximum thicknesses of the first lens portion 12 and the second lens portion 14 in the optical axis direction are both greater than 8mm, the mass of the first lens portion 12 and the second lens portion 14 is large, the occupied space is large, and the light transmittance of the lens cannot be guaranteed when the thickness exceeds 8 mm. Therefore, when the thicknesses of the first lens portion 12 and the second lens portion 14 in the optical axis direction range from 0.5mm to 8mm, the production cost of the lenses can be reasonable, the lenses can be located in a small space, and the use portability of the virtual reality lens group is improved.
It is to be understood that in other embodiments, the surfaces of both sides of the first lens portion 12 and the second lens portion 14 may be composed of one flat surface and one curved surface, and may also be composed of two curved surfaces, as long as there is a height difference between the first lens portion 12 and the second lens portion 14 in the optical axis direction.
In one embodiment, the first and second lens portions 12 and 14 are both polycarbonate lenses or acrylic lenses. Specifically, polycarbonate is a high molecular polymer containing a carbonate group in its molecular chain, and is a tough thermoplastic resin. The first lens and the second lens made of polycarbonate are colorless and transparent, heat-resistant, impact-resistant, high in refractive index, good in processability and good in mechanical property at ordinary use temperature. The acrylic is an important plastic high polymer material which is developed earlier, and has better transparency and chemical stability. The light transmittance of the first lens and the second lens made of the acrylic lens is high, the effects of soft light and clear vision can be achieved, and the acrylic lens is resistant to various corrosion and good in stability.
In another embodiment, the interval S between the first lens portion 12 and the second lens portion 14 in the optical axis direction is 0.001mm to 2 mm. Specifically, in the present embodiment, air is filled between the first lens portion 12 and the second lens portion 14. It is understood that in other embodiments, other mediums can be used between the first lens portion 12 and the second lens portion 14, such as a glass plate that does not affect the light transmittance, so long as the performance of the virtual reality lens group itself is not affected by the understanding of those skilled in the art. When the interval S between the first lens portion 12 and the second lens portion 14 in the optical axis direction is 0.001mm to 2mm, the first lens portion 12 and the second lens portion 14 do not directly contact each other, thereby avoiding the influence of the performance between each other and the influence on the optical path; and the distance between the two is compact, so that the first lens part 12 and the second lens part 14 do not occupy too large volume.
Referring to fig. 4, the adjusting assembly 30 includes a driving portion 32 and a transmission portion 34. The driving part 32 is used for generating a driving force, and the transmission part 34 is in transmission connection between the driving part 32 and at least one of the first lens part 12 and the second lens part 14 in each group of lens assemblies 10.
In the present embodiment, the driving portion 32 is a gear, the transmission portion 34 is a rack engaged with the gear, and the direction of the rotation axis of the gear, the direction of the optical axis, and the changing direction of the relative position relationship (i.e. the translation direction of one of the first lens portion 12 and the second lens portion 14 having the moving capability) are perpendicular to each other.
Specifically, the adjusting assembly 30 for driving each lens assembly 10 includes a gear (the same reference numeral as that of the driving portion 32 is used hereinafter), a first rack 341 and a second rack 342, the first rack 341 is drivingly connected between the gear 32 and the first lens portion 12, and the second rack 342 is drivingly connected between the gear 32 and the second lens portion 14. The extending direction of the first rack 341 and the second rack 342 is parallel to the changing direction of the relative position relationship between the first lens portion 12 and the second lens portion 14 in each group of lens assemblies 10 (i.e. the translation direction of the one with the moving capability).
In use, the first rack 341 and the second rack 342 can be driven to move in opposite directions by rotating the gear 32, for example, when the gear 32 rotates clockwise, the first rack 341 engaged with the gear 32 moves downward to drive the first lens portion 12 connected to the first rack 341 to move downward; at the same time, the second rack gear 342 engaged with the gear 32 moves upward to drive the second lens 300 connected to the second rack gear 342 to move upward, that is, the first lens portion 12 and the second lens portion 14 are driven to move in a direction perpendicular to the optical axis, the relative positional relationship between the first lens portion 12 and the second lens portion 14 is changed, and thus the imaging position is changed.
Further, the gear 32 may also be connected to the main body, for example, a manual button located on the main body may be connected, and a user may adjust the manual button exposed to the main body to drive the gear 32 to rotate, so as to drive the first rack 341 and the second rack 342 to move, thereby changing the relative positions of the first lens portion 12 and the second lens portion 14 in the direction perpendicular to the optical axis, and changing the imaging position. Alternatively, the gear 32 may also be partially exposed from the main body, and the user directly rotates the gear 32 to drive the first rack 341 and the second rack 342 to move.
In this embodiment, the teeth on the surfaces of the first gear rack 341, the second gear rack 342 and the gear 32 are all oblique teeth, the contact line of the oblique teeth is a straight line oblique to the axis of the gear, and the teeth are gradually engaged and disengaged, so that the transmission is smooth and has low noise, and the engagement mode can reduce the influence of manufacturing errors on the transmission. It is understood that in other embodiments, the saw tooth shapes of the surfaces of the first rack 341, the second rack 342 and the gear 32 may also be a chevron shape, a curve shape, etc., as long as those skilled in the art can consider it to meet the requirements of the transmission.
In one embodiment, referring to fig. 1, the moving range of the first lens portion 12 and the second lens portion 14 along the same direction perpendicular to the optical axis is ± 2mm to ± 10 mm. It should be noted that "±" here indicates a translation direction of the lens, and is based on the optical axis, and positive when moving along one side of the direction perpendicular to the optical axis, and negative when moving along the other side of the direction perpendicular to the optical axis. Specifically, the relative positions of the first lens portion 12 and the second lens portion 14 in the direction perpendicular to the optical axis are adjusted by the adjusting member 30.
When the variation range of the relative positions of the first lens part 12 and the second lens part 14 in the direction perpendicular to the optical axis is ± 2mm to ± 10mm, the focusing range corresponding to the first lens part 12 and the second lens part 14 is 10mm to 70 mm;
when the variation range of the relative positions of the first lens part 12 and the second lens part 14 in the direction perpendicular to the optical axis is less than ± 2mm, the focal length variation is too small, and the difficulty in designing the first lens part 12 and the second lens part 14 is greatly increased;
when the variation range of the relative position of the first lens part 12 and the second lens part 14 along the direction perpendicular to the optical axis is greater than ± 10mm, a larger operation space needs to be reserved for the first lens part 12 and the second lens part 14, which may cause the virtual reality device to be large and heavy, and fatigue is easily generated when a user uses the virtual reality device;
when the moving range of the first lens part 12 and the second lens part 14 along the direction perpendicular to the optical axis is ± 2mm to ± 10mm, the adjustment of the focal length can be ensured within a reasonable range, and the production cost and the lens volume can be controlled.
Further, the aperture size of the first lens portion 12 and the second lens portion 14 ranges from 10mm to ± 50 mm. Specifically, when the aperture sizes of the first lens section 12 and the second lens section 14 are smaller than 10mm, the angle of field is too small, which may reduce the use immersion feeling of the user; when the aperture sizes of the first lens portion 12 and the second lens portion 14 are larger than 50mm, the mass and volume of the first lens portion 12 and the second lens portion 14 are large, which affects the convenience of use.
Referring to fig. 5, in the second embodiment of the present application, the virtual reality lens group 100' includes a main body (not shown), an imaging assembly 200, and a focusing assembly (not numbered). The imaging assembly 200 is disposed at an imaging side and assembled on a main body. The focusing assembly is assembled on the main body and positioned between eyes of a viewer and the imaging assembly 200, and is used for adjusting the focal distance between the eyes of the viewer and the image plane according to the operation of the user, so that the viewer can clearly view the image on the imaging assembly 200 positioned on the imaging side.
The focusing assembly includes at least one set of lens assemblies 10 ', each set of lens assemblies 10' includes a first lens portion 12 'and a second lens portion 14'. The first lens portion 12 'and the second lens portion 14' are configured to be sequentially disposed along the optical axis direction from the eyes of the viewer to the imaging assembly 200. And the first lens portion 12 ' and the second lens portion 14 ' of each lens assembly 10 ' can be combined under an external force to form one of a flat lens (as shown in fig. 5), a concave lens (as shown in fig. 2), and a convex lens (as shown in fig. 3) matching the vision of a viewer.
In one embodiment, the focusing assembly further comprises an adjustment assembly 30 ', and the adjustment assembly 30 ' is in driving connection with at least one of the first lens portion 12 ' and the second lens portion 14 ' in each set of lens assemblies 10 ' to change the combined relationship of the first lens portion 12 ' and the second lens portion 14 '.
It should be noted that, in the second embodiment of the present application, specific structures, positions, and matching relationships of the lens assembly 10 'and the adjusting assembly 30' in the focusing assembly are all the same as those of the first embodiment of the present application, and the descriptions of the lens assembly 10 and the adjusting assembly 30 are omitted here.
The difference between the virtual reality lens group 100 'in the second embodiment of the present application and the virtual reality lens group 100 in the first embodiment of the present application is that the virtual reality lens group 100' itself is configured with the imaging component 200 for imaging, the imaging component 200 can adjust the angle of incident light, so that the viewing angle is increased, the stereoscopic effect is enhanced, and people have a feeling of being personally on the scene, thereby being not required to cooperate with other imaging components, and being capable of realizing the effect of viewing on the imaging component. The structure of the imaging assembly 200 is not exclusive, and for example, the imaging assembly 200 may be a convex lens for focusing light, and after the light is emitted from the object side, the light sequentially passes through the imaging assembly 200, the first lens portion 12 'and the second lens portion 14' to be imaged, so that the eye can receive corresponding imaging information.
The present application further provides a virtual reality device (such as the virtual reality helmet mentioned above), which includes a body (not shown) and the virtual reality mirror group 100/100' in the first and second embodiments. Specifically, the body of virtual reality equipment includes helmet and fixed band etc, the fixed band is connected in the helmet, set up in the helmet in virtual reality group 100/100 ', the user can fix the helmet on the head bag through the fixed band, adjust subassembly 30/30' through virtual reality group 100/100 'can adjust first lens portion 12/12' and second lens portion 14/14 'in virtual reality group 100/100' along the relative position with the optical axis vertical direction, thereby change the focus, make the user of different visual acuity degree can both see the image clearly.
The application still provides a virtual reality system includes above-mentioned virtual reality equipment and display device, and the display device constructs to assemble on the body of virtual reality equipment for detachably, virtual reality mirror group 100/100 'configure to be located viewer's eyes with between the display device, the display device sets up in the helmet.
In the above virtual reality lens assembly 100/100 ', the apparatus and the system, the image side (e.g. the imaging module 200), the first lens portion 12/12 ' and the second lens portion 14/14 ' are sequentially disposed from the object side to the object side along the optical axis direction, and the light rays emitted from the object side sequentially pass through the image side, the first lens portion 12/12 ' and the second lens portion 14/14 ' to form an image, so that the eyes can receive corresponding image information. In addition, the relative positions of the first lens part 12/12 ' and the second lens part 14/14 ' in the direction perpendicular to the optical axis are adjusted through the adjusting component 30/30 ', so that the combination of the concave surface and the convex surface of the first lens part 12/12 ' and the second lens part 14/14 ' is changed, the focusing position is changed, users (normal vision group, myopia group and hyperopia group) with different vision levels can see clear outlines, and the problems that the load of the users is increased, the bridge of the nose and the ear parts are damaged due to the wearing of glasses, and the use of the users is inconvenient are solved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (18)
1. A set of virtual reality lenses, comprising:
a main body;
at least one set of lens assemblies mounted on the body; each group of the lens components comprises a first lens part and a second lens part which are configured to be sequentially arranged along the direction of an optical axis from the human eyes of a viewer to the imaging side; and
an adjustment assembly in driving connection with at least one of the first lens portion and the second lens portion of each set of the lens assemblies;
wherein, based on the driving of the adjusting component, the relative position relationship between the first lens part and the second lens part in each group of the lens components when one of the first lens part and the second lens part moves relative to the other lens part changes;
the relative position relationship comprises a first relative position in a flat mirror state, a second relative position in a near mirror state and a third relative position in a far mirror state in the same direction.
2. The virtual reality mirror group of claim 1, wherein the first lens portion and the second lens portion of each lens assembly are disposed in a same plane perpendicular to the optical axis, and the relative position relationship between the first lens portion and the second lens portion of each lens assembly in the plane of the first lens portion and the second lens portion can be changed based on the driving of the adjusting assembly.
3. The virtual reality mirror group according to claim 1, wherein the first lens portion and the second lens portion of each lens assembly are parallel to each other along the optical axis and spaced apart from each other in the same plane perpendicular to the optical axis, and the extending directions of the first lens portion and the second lens portion are perpendicular to the optical axis;
at least one of the first lens part and the second lens part can translate along the extending direction of the lens part relative to the optical axis.
4. The virtual reality mirror group according to claim 1, wherein the first lens part and the second lens part of each lens assembly are arranged in the same plane perpendicular to the optical axis along the up-down direction of the human eyes of the viewer; the first lens part and the second lens part in each group of the lens components are arranged at intervals along the direction parallel to the optical axis;
at least one of the first lens portion and the second lens portion of each group of the lens assemblies can translate up and down relative to the human eye of the viewer based on the driving of the adjusting assembly, so that each group of the lens assemblies can be switched among a flat mirror state, a near mirror state and a far mirror state.
5. The set of virtual reality lenses according to any one of claims 1-4, wherein one of the first and second lens portions is stationary with respect to the optical axis and the other one is translated with respect to the stationary one; or
The first lens portion and the second lens portion are mutually translated relative to an optical axis.
6. The set of virtual reality lenses according to any one of claims 1-4, wherein the first lens portion comprises a first curved surface having a first concave section and a first convex section, and the second lens portion comprises a second curved surface having a second concave section and a second convex section; upon actuation of the adjustment assembly, one of the first and second lens portions is movable relative to the other to one of the following positions:
the first relative position where the first projecting segment is complementary to the second recessed segment and the second projecting segment is complementary to the first recessed segment;
the second relative position at which the first recessed section and the second recessed section at least partially coincide in the optical axis direction;
and the first protruding section and the second protruding section are at least partially overlapped at the third relative position along the optical axis direction.
7. The set of virtual reality mirrors according to claim 6, wherein the first concave section and the first convex section are arranged along the extending direction of the first lens portion, and the second concave section and the second convex section are arranged along the extending direction of the second lens portion;
and in the same direction, the arrangement direction of the first concave section and the first convex section is opposite to the arrangement direction of the second concave section and the second convex section.
8. The set of virtual reality mirrors according to claim 6, wherein the first lens portion comprises a first flat surface facing away from the first curved surface, and the second lens portion comprises a second flat surface facing away from the second curved surface; the first plane and the second plane are arranged facing each other.
9. The virtual reality mirror group according to claim 1, wherein the adjusting assembly comprises a driving portion and a transmission portion, the driving portion is used for generating a driving force, and the transmission portion is in transmission connection with the driving portion and at least one of the first lens portion and the second lens portion of each group of the lens assemblies.
10. The set of virtual reality mirrors according to claim 9, wherein the driving portion is a gear, the transmission portion is a rack engaged with the gear, and the direction of the rotation axis of the gear, the direction of the optical axis and the direction of the relative position change are perpendicular to each other.
11. The virtual reality mirror set of any one of claims 9 or 10, wherein the adjusting assembly for driving each set of lens assemblies comprises a gear, a first rack and a second rack, the first rack is connected between the gear and the first lens portion in a driving manner, the second rack is connected between the gear and the second lens portion in a driving manner, and the extending direction of the first rack and the second rack is parallel to the changing direction of the relative position relationship between the first lens portion and the second lens portion in each set of lens assemblies.
12. A set of virtual reality lenses, comprising:
a main body;
an imaging assembly mounted on the body; and
a focusing assembly mounted on the main body and positioned between the eyes of the viewer and the imaging assembly;
the focusing assembly comprises at least one group of lens assemblies, each group of lens assemblies comprises a first lens part and a second lens part, and the first lens part and the second lens part are configured to be sequentially arranged along the direction of an optical axis from human eyes of a viewer to the imaging assembly;
wherein the first lens part and the second lens part in each group of the lens components can be combined under the action of external force to form one of a convex lens, a concave lens and a flat lens which are matched with the vision of a viewer.
13. The virtual reality mirror set of claim 12, wherein the focusing assembly further comprises an adjustment assembly in driving connection with at least one of the first and second lens portions of each set of lens assemblies to change the combined relationship of the first and second lens portions.
14. The virtual reality mirror group of claim 13, wherein the first lens part and the second lens part of each lens assembly are parallel to each other along the optical axis and spaced apart from each other in the same plane perpendicular to the optical axis;
the first lens part comprises a first curved surface and a first plane which is arranged back to the first curved surface, the second lens part comprises a second curved surface and a second plane which is arranged back to the second curved surface, and the first plane and the second plane are arranged in a mutually facing mode;
the first curved surface is provided with a first concave section and a first convex section along the extending direction of the first lens part, the second curved surface is provided with a second concave section and a second convex section along the extending direction of the first lens part, and the extending directions of the first lens part and the second lens part are both vertical to the direction of an optical axis;
upon actuation of the adjustment component, at least one of the first and second lens portions translates in its own extension direction relative to the optical axis and forms one of the following mirror structures:
the first concave section and the second concave section partially coincide and are combined to form the concave lens;
the first convex section and the second convex section are partially overlapped and combined to form the convex lens;
the first convex section is complementary with the second concave section and the second convex section is complementary with the first concave section and combined to form a flat mirror.
15. The virtual reality mirror set of claim 13, wherein the adjusting assembly comprises a driving portion and a transmission portion, the driving portion is used for generating a driving force, and the transmission portion is in transmission connection with the driving portion and at least one of the first lens portion and the second lens portion of each group of the lens assemblies.
16. The virtual reality mirror group of claim 15, wherein the adjusting assembly for driving each group of lens elements comprises a gear, a first rack and a second rack, the first rack is connected between the gear and the first lens portion in a transmission manner, the second rack is connected between the second rack and the second lens portion in a transmission manner, and the extension direction of the first rack and the second rack is parallel to the changing direction of the relative position relationship between the first lens portion and the second lens portion in each group of lens elements.
17. A virtual reality device, comprising a body and the set of virtual reality lenses of any one of claims 1-16, the set of virtual reality lenses being assembled on the body.
18. A virtual reality system, wherein the virtual reality device comprises the virtual reality device of claim 17 and a display device configured to be detachably mounted on the body, the set of virtual reality lenses being configured to be positioned between the eyes of the viewer and the display device.
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| CN201910148733.2A CN111399219A (en) | 2019-02-28 | 2019-02-28 | Virtual reality lens group, equipment and system |
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| CN201910148733.2A CN111399219A (en) | 2019-02-28 | 2019-02-28 | Virtual reality lens group, equipment and system |
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| CN111399219A true CN111399219A (en) | 2020-07-10 |
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| WO2024001238A1 (en) * | 2022-06-30 | 2024-01-04 | 歌尔光学科技有限公司 | Optical module and head-mounted display device |
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