CN216449775U

CN216449775U - Combined micro lens

Info

Publication number: CN216449775U
Application number: CN202122456266.5U
Authority: CN
Inventors: 刘康; 杨树柏; 王龙祥
Original assignee: Individual
Current assignee: Shanghai Millimeter Star Optical Co ltd
Priority date: 2021-04-06
Filing date: 2021-10-12
Publication date: 2022-05-06
Anticipated expiration: 2031-10-12

Abstract

The application discloses modular microlens, including lens body and sub-assembly, the lens body with the sub-assembly combines into an organic whole, the lens body with the sub-assembly bonds, fixed connection between sub-assembly and the laser instrument. This scheme makes this combination formula microlens very similar with single lens of full length in the appearance through the mode that uses the sub-assembly, has reduced the volume of lens body, and then reduce cost to do not change the adjustment mounting process that the user is connected combination formula lens and laser instrument, the material of sub-assembly includes but not limited to glass, pottery, metal simultaneously, and then has more selection spaces on with laser instrument connected mode and connection structure, overcome and glue the shortcoming such as "long-term ageing that the connection probably brought, have volatile matter to ooze, do not resist high temperature", more firm reliable.

Description

Combined micro lens

Technical Field

The application relates to the technical field of semiconductor laser beam shaping lenses, in particular to a combined micro lens.

Background

Semiconductor lasers are characterized by output beams having widely different divergence angles in two mutually perpendicular planes. For example, the divergence angle in the vertical plane is 60 °, the divergence angle in the horizontal plane is 15 °, and the light spot of the beam cross section is an elliptical spot. The output light beams need to be shaped in two planes respectively, the common method is to shape the light beams by using two cylindrical lenses in front and back respectively, the large divergence direction is shaped into collimated light by using a fast axis collimating lens (FAC) in the front, and the small divergence direction is shaped into the collimated light by using a slow axis collimating lens (SAC) in the back, so that the light spots on the cross section of the light beams obtain circular spots. The fast axis collimating lens (FAC) is in the shape of a slender convex column, wherein the convex column surface is a non-circular arc surface, and is difficult to machine and expensive.

SUMMERY OF THE UTILITY MODEL

It is a primary object of the present application to provide a combined microlens to improve the problems of the related art.

Typical full length single FAC size: 4.0mm long by 0.5mm wide by 0.5mm thick, what plays the optical imaging is central length 1mm region, therefore can take central length 2.0mm part as lens, both ends are the form of the non-light-transmitting composite member, in order to reduce cost.

In order to achieve the above object, the present application provides a combined microlens, which includes a lens body and a combined member, wherein the lens body is combined with the combined member into a whole, the lens body is glued to the combined member, the combined member is fixedly connected with a laser, and the combined member is provided as one or more pieces of metal material.

In one embodiment of the present application, the assembly is provided as an extension connected to two ends of the lens body, the assembly and two ends of the lens body are both adhered by glue, and the lens body and two assemblies form a three-section combined microlens.

In an embodiment of the present application, stepped portions are disposed at two ends of the lens body, and two ends of the assembly connected to the lens body are disposed as corresponding stepped portions, and directions of opening and combining the stepped portions are not limited.

In an embodiment of the present application, outer end surfaces of two ends of the lens body are provided with inclined surfaces, end surfaces of the two assemblies connected to the lens body are provided with corresponding inclined surfaces, and directions of opening and combining the inclined surfaces are not limited.

In an embodiment of the present application, the assembly is configured as a support of the lens body, a support hole is formed in the center of the support, the lens body is fixed on the support hole, the lens body is attached to the support joint, and the support is connected to the laser.

In an embodiment of the present application, the lens body is configured as a slender cylindrical mirror with a convex surface and a flat section, the flat end of the lens body is cut into the step part, the step part extends into the support hole, the support is configured as a long-groove thin-wall support with a central opening and two vertical walls, the two ends of the support are connected with a laser, and the shape of the support hole corresponds to the shape of the step part of the lens body.

In an embodiment of the present application, the plane end of the lens body is flush with the connecting surface of the support near the lens body, two vertical walls of the support are arc-shaped flanges, and the arc-shaped flanges hold the cylindrical surface of the lens body tightly.

In an embodiment of the present application, a plurality of concave points are riveted on two vertical walls of the bracket, and the lens body is held tightly by the concave points.

In an embodiment of the present application, the support is a double-L support formed by combining two L-shaped members, and the two L-shaped members wrap and clamp the peripheral side walls of the lens body for adhesive bonding.

In an embodiment of the application, fixed ear, two can be turned over back to the support both ends fixed ear and laser instrument both sides welding.

Compared with the prior art, the beneficial effects of this application are: through the combined type micro lens with the design, the combined type micro lens is very similar to a single lens with full length in appearance and has no change in function by using a combined piece when in use, and meanwhile, the volume of the lens body is reduced, so that the cost is reduced, and the adjusting and mounting process for connecting the combined type lens and a laser by a user is not changed;

because of the particularity of the lens, the material of the lens is limited, but the material of the assembly can be selected from metal materials, so that more selection spaces are provided for the connection mode and the connection structure of the lens and the laser, and the defects of long-term aging, volatile matter seepage, high temperature resistance and the like possibly caused by adhesive connection are overcome, so that the connection between the micro lens and the laser is firmer and more reliable.

Drawings

Fig. 1 is a schematic structural diagram of a step portion in a length direction in embodiment 1 of a combined microlens provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a step portion in a width direction in embodiment 1 of a combined microlens provided according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a longitudinal inclined plane structure in embodiment 2 of a combined microlens provided according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a lens body with a width direction slant in embodiment 2 of a combined microlens according to an embodiment of the present application;

fig. 5 is a schematic diagram of a length direction explosion structure in embodiment 3 of a combined microlens provided according to an embodiment of the present application;

fig. 6 is a schematic diagram of a width-direction explosion structure in embodiment 3 of a combined microlens provided according to an embodiment of the present application;

FIG. 7 is a schematic view of an arc-shaped flanging structure in embodiment 4 of a combined microlens provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a pit structure in embodiment 5 of a combined microlens provided according to an embodiment of the present application;

fig. 9 is a schematic view of a riveting structure in embodiment 6 of a combined microlens provided according to an embodiment of the present application;

FIG. 10 is a schematic view of a fixing lug structure of embodiment 7 of a combined microlens provided according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a fixing lug and a laser structure in embodiment 7 of a combined microlens provided according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a double L-shaped holder structure in example 8 of a combined microlens provided according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a combined microlens in the longitudinal direction in embodiment 1 according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a combined microlens in the width direction in embodiment 1 according to an embodiment of the present application;

FIG. 15 is a schematic diagram of a combined longitudinal planar structure in embodiment 2 of a combined microlens according to an embodiment of the present application;

FIG. 16 is a schematic diagram of a combined structure of a combined microlens in the width direction in embodiment 2

FIG. 17 is a schematic view of a planar structure of an arc-shaped flange in embodiment 4 of a combined microlens according to an embodiment of the present application

Fig. 18 is a schematic view of a support structure in embodiment 6 of a combined microlens provided according to an embodiment of the present application.

In the figure: 1. a lens body; 2. an assembly; 3. a step portion; 4. a bevel; 5. a bracket hole; 6. a support; 7. arc flanging; 8. concave points; 9. edge riveting; 10. and fixing the ears.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

Referring to fig. 1, 2, 13 and 14, the present application provides a combined microlens, which includes a lens body 1 and a combined member 2, the lens body 1 and the combined member 2 are combined into a whole, the lens body 1 and the combined member 2 are glued, the combined member 2 and a laser are fixedly connected, and the combined member 2 is configured as a single piece or multiple pieces.

When the combined micro-lens is specifically arranged, the combined part 2 is arranged to be an extending part connected with two ends of the lens body 1, two ends of the combined part 2 and two ends of the lens body 1 are both pasted by glue, and the lens body 1 and the two combined parts 2 form a three-section combined micro-lens.

In specific arrangement, referring to fig. 1 and 13, step portions 3 are arranged at two ends of the lens body 1 in the length direction, the step portions 3 can be arranged as a layer of steps, and the ends of the two assemblies 2 connected with the lens body 1 are arranged as a layer of step portions 3 corresponding to the shape and direction.

In the specific arrangement, as shown in fig. 2 and 14, the step portions 3 may be formed from another direction, and the step portions 3 each occupy approximately half the height of the lens, and the step portions may be formed as step portions 3 of a multi-step structure.

One way to increase the bonding strength is to increase the bonding area, because the bonding strength increases rapidly with the increase of the bonding area, the three-stage bonding structure increases the bonding area by about 50% compared to 0.5mm by 0.5mm of the cross-sectional area of the lens, and increases the bonding strength by more than one time, thereby improving the stability between the lens body 1 and the assembly 2.

Example 2

Referring to fig. 3 to 4 and fig. 15 to 16, unlike embodiment 1, the step portions 3 at both ends of the lens body 1 and the step portions 3 on the assembly 2 are changed to the design of the inclined surface 4.

In specific arrangement, as shown in fig. 3 and fig. 15, the outer end faces of the two ends of the lens body 1 are provided with the inclined surfaces 4, the end faces of the two combined members 2 connected with the lens body 1 are provided with the corresponding inclined surfaces 4, the total bonding area is increased to 0.5mm by 0.5mm relative to the cross-sectional area of the lens of example 1, for example, the total bonding area is increased to 0.5mm by 0.8mm from 0.5mm by 0.5mm, the length of the lens at the planar end is preferably shortened, and the length of the spherical end of the lens can be shortened on the premise of not affecting the light transmission performance.

Referring to fig. 4 and 16, the inclined surfaces 4 for bonding can be formed from another direction, and the two ends of the lens body 1 are formed as the inclined surfaces 4 to be bonded to the inclined surfaces 4 of the assembly 2 at the two ends.

Example 3

Referring to fig. 5 to 6, the difference from embodiment 1 is that the assembly member 2 is configured as a support 6 of the lens body 1, a support hole 5 is formed in the center of the support 6, the lens body 1 is fixed on the support hole 5, the joint of the lens body 1 and the support 6 is attached and connected, and the support 6 is connected with the laser.

In the specific setting, because the light spot on the plane end light passing surface is relatively small, step parts 3 can be cut on two sides of the plane end without influencing light passing, the lens body 1 is arranged into a slender cylindrical mirror with a convex surface and a flat section, the step parts 3 are cut on the plane end of the lens body 1, the step parts 3 extend into the support hole 5, the support 6 is arranged into a long-groove thin-wall support with a central opening and vertical walls on two sides, two ends of the support 6 are connected with a laser, the shape of the support hole 5 corresponds to the shape of the step parts 3 of the lens body 1, in the figure 5, the support hole is inwards folded in the direction with the width of 0.5mm, and 0.1 × 0.1 long step is cut on two sides.

In the specific setting, as shown in fig. 6, the lens body 1 is folded inward in the direction of 2.0mm in length, and 0.1 × 0.1 short steps are cut at both sides.

Example 4

Referring to fig. 7 and 17, the planar end of the lens body 1 is flush with the connecting surface of the support 6 adjacent to the lens body 1, two vertical walls of the support 6 are arc flanges 7, the arc flanges 7 tightly hold the cylindrical surface of the lens body 1, the lens body 1 cut through the step portion 3 is inserted into the support hole 5 by the planar end, so that the lens body 1 has limited freedom of moving up and down in the plane perpendicular to the light transmission axis.

Example 5

Referring to fig. 8, unlike embodiment 4, a plurality of concave points 8 are disposed on two vertical walls of the bracket 6, and the lens body 1 is held tightly by the concave points 8, which may be formed by spot riveting or local deformation at a plurality of positions.

Example 6

Referring to fig. 9 and 18, four grooves are symmetrically cut on two vertical walls of the bracket 6, in fig. 9, the vertical wall in the middle is riveted into a riveting edge 9, the riveting edge 9 embraces the lens tightly, the riveting edge 9 can be continuously riveted and deformed into a small concave shape, the strength of the structural member is increased, and the total volume of the bracket 6 and the lens body 1 is reduced.

Example 7

Referring to fig. 10-11, the two ends of the bracket 6 can be turned back to form fixing lugs 10, and after the lens body 1 is fixed by the bracket 6, the two fixing lugs 10 can be welded to the two sides of the laser by laser welding.

Example 8

Referring to fig. 12, the bracket 6 is a double-L bracket formed by combining two L-shaped members, the two L-shaped members wrap the peripheral side wall of the lens body 1 and are clamped and glued, and then the two L-shaped members are welded to the laser.

Specifically, the working principle of the combined microlens is as follows: when in use, the non-optical functional area of the lens body 1 is replaced by the low-cost assembly 2, so that the lens body 1 becomes a combined microlens which is connected with the assembly 2 into a whole, the low-cost assembly 2 is used, and the assembly cost is added, the total cost of the combined microlens is lower than that of the original single-piece long lens body 1, the optical performance is not changed, the production cost is lower, and the subsequent detection is convenient.

It should be noted that: in this application, the location limit of cutting of lens body 1 can be changed into cutting unilateral, cutting round edge, corner cut etc. and corresponding 6 trompils of support can be square hole, round hole or dysmorphism hole to reach the spacing purpose of translation.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combined microlens comprises a lens body (1) and a combined piece (2), wherein the lens body (1) and the combined piece (2) are combined into a whole, the lens body (1) and the combined piece (2) are glued, the combined piece (2) is fixedly connected with a laser, and the combined piece (2) is arranged into a single piece or multiple pieces made of metal materials.

2. A combined microlens as claimed in claim 1, wherein the assembly (2) is provided as an extension member connected to both ends of the lens body (1), the assembly (2) and both ends of the lens body (1) are adhered by glue, and the lens body (1) and two of the assemblies (2) form a combined microlens combined in a three-stage manner.

3. A combined microlens as claimed in claim 2, characterised in that the lens body (1) is provided with steps (3) at both ends, and the ends of the two combined members (2) connected to the lens body (1) are provided with corresponding steps (3).

4. A combined microlens as claimed in claim 2, wherein the outer end faces of the two ends of the lens body (1) are provided as inclined faces (4), and the end faces of the two combined members (2) connected to the lens body (1) are provided as corresponding inclined faces (4).

5. A combined microlens as claimed in claim 3, wherein the assembly (2) is provided as a holder (6) for the lens body (1), a holder hole (5) is formed in the center of the holder (6), the lens body (1) is fixed on the holder hole (5), the joint of the lens body (1) and the holder (6) is attached, and the holder (6) is connected to a laser.

6. A combined microlens as claimed in claim 5, characterised in that the lens body (1) is configured as an elongated cylindrical mirror with convex surface and flat cross section, the flat end of the lens body (1) cuts the step (3), the step (3) extends into the holder hole (5), the holder (6) is configured as a thin-walled holder of a slotted shape with a central opening and vertical walls on both sides, and the holder (6) is connected with a laser at both ends, the shape of the holder hole (5) corresponds to the shape of the step (3) of the lens body (1).

7. A combined microlens as claimed in claim 5, characterised in that the planar end of the lens body (1) is flush with the connecting surface of the support (6) adjacent to the lens body (1), two vertical walls of the support (6) are provided with arc-shaped flanges (7), and the arc-shaped flanges (7) embrace the cylindrical surface of the lens body (1).

8. A combined microlens as claimed in claim 5, characterised in that the two vertical walls of the support (6) are each riveted with a plurality of pits (8), a plurality of said pits (8) holding the lens body (1) tightly.

9. A combined microlens as claimed in claim 5, characterised in that the said support (6) is a double L-shaped support formed by combining two L-shaped parts which wrap and clamp the peripheral side walls of the said lens body (1) for gluing.

10. A combined microlens as claimed in claim 5, characterised in that the support (6) is provided with fixing lugs (10) at both ends, the two fixing lugs (10) being welded to both sides of the laser.