KR102400613B1 - Optical system having dual magnification - Google Patents

Abstract

A sight optical system having dual magnification is disclosed. A sight optical system having a dual magnification of the present invention includes: a condenser lens provided inside a sight body to condense a beam incident through an objective lens unit; a sizing lens unit provided inside the collimator body so as to be disposed at the rear of the condenser lens to establish and change the image inverted from the front of the condenser lens; and an eyepiece unit provided in the sight body to enlarge the image so as to be disposed at the rear of the rectified lens unit, and the rectified lens unit includes a plurality of rectified lenses that implement only low magnification and high magnification, and a plurality of rectified lenses when switching between low and high magnification magnifications is characterized in that it is moved while maintaining a certain interval.

Description

Sight sight optical system with dual magnification {OPTICAL SYSTEM HAVING DUAL MAGNIFICATION}

The present invention relates to a sight optical system, and more particularly, to a sight optical system having a dual magnification that enables a simpler and more compact structure and product design by implementing only low magnification and high magnification.

Similar to the telephoto optical system, the aiming optical system is also called an auxiliary device for firearms that enables aiming shooting by appropriately arranging and designing predetermined lenses to greatly enlarge the image of a target distant object to match the reticle pattern installed in the optical system. can do.

Aiming optics generally apply a zoom lens system that allows continuous magnification changes from low to high magnification, but in actual use sites such as military operations and hunting, the utilization of the intermediate magnification section is limited. In reality, it can be said that it is common to use only the lowest magnification and the highest magnification because it can be inconvenient to change the magnification operation in a busy situation.

1 shows the configuration of a variable magnification optical system lens of a general collimator. and a first focal plane on which the beam from the objective lens 10 is primarily imaged, and a second focal plane on which the beams 30 and 40 from the first and second orthogonal lenses 30 and 40 are secondaryly formed.

After the beam emitted from the object is transmitted through the objective lens 10, it is primarily focused or imaged in the first focal plane, and after focusing, the focusing lens 20 for condensing the beam that spreads and progresses and the image is changed while establishing The first sizing lens 30 and the second sizing lens 40 are transmitted through, and secondary focusing is performed on the second focal plane. The secondary focused beam is focused as an image on the retina of the eye by the eyepiece 50 . A mesh line on which a pattern is engraved may be located on any one of the first focal plane and the second focal plane.

As shown in FIG. 1, in the sight optical system having the above configuration, the first orthogonal lens 30 and the second orthogonal lens 40 perform a reciprocating (CAM) operation according to the curve 1 and the curve 2, respectively, As the distances (d1, d2, d3) between the three lenses are appropriately changed accordingly, variable magnification is implemented in a constant magnification section (1.0X to 4.0X).

Therefore, the above-described optical system can be viewed as a typical collimating lens optical system that implements about 4x zoom magnification of 1.0X ~ 4.0X.

However, there is a problem in that consumer utilization is reduced compared to investment in design resources (or device cost) due to a decrease in the frequency of use of the middle magnification section except for 1x magnification and 4x magnification among the magnification sections of the above-described optical system and inconvenience of the magnification operation.

The above-described technical configuration is a background for helping understanding of the present invention, and does not mean a conventional technique widely known in the technical field to which the present invention pertains.

Korea Patent Publication No. 10-1675578 (EO System Co., Ltd.) 2016. 11. 07.

Accordingly, the technical problem to be achieved by the present invention is to provide an optical system with a dual magnification that enables a simpler and more compact structure and product design by implementing only low magnification and high magnification.

According to an aspect of the present invention, there is provided a condensing lens provided inside the body of the scope for condensing the beam incident through the objective lens unit; a sizing lens unit provided inside the sight body so as to be disposed at the rear of the condenser lens to establish and change the image inverted from the front of the condenser lens; and an eyepiece unit provided on the sight body to enlarge an image so as to be disposed behind the sizing lens unit, wherein the sizing lens unit includes a plurality of rectifying lenses implementing only low magnification and high magnification, and switching magnifications between the low magnification and the high magnification When the plurality of orthogonal lenses are moved while maintaining a predetermined interval, an optical sight may be provided.

The rectified lens unit may include: a first rectified lens disposed between the condensing lens and the eyepiece unit; and a second erected lens disposed between the first erected lens and the eyepiece unit.

At least one of the first erected lens and the second erected lens may be provided as a double junction lens.

The first rectified lens may include a first concave lens disposed to face the condensing lens; and a first convex lens provided to be bonded to the first concave lens and disposed between the first concave lens and the second rectified lens.

The second rectified lens may include a second convex lens disposed between the first convex lens and the eyepiece unit; and a second concave lens provided to be bonded to the second convex lens and disposed between the second convex lens and the eyepiece unit.

The objective lens unit may be provided as a double junction lens.

When switching from the low magnification to the high magnification, a distance between the first rectified lens and the second rectified lens may be constantly maintained.

The first rectified lens may be disposed in the order of the first convex lens and the first concave lens by changing the order of the first concave lens and the first convex lens.

The second rectified lens may be disposed in the order of the second concave lens and the second convex lens by changing the order of the second convex lens and the second concave lens.

Embodiments of the present invention include a plurality of rectified lenses that implement only a low magnification and a high magnification, and a plurality of oriented lenses are moved while maintaining a constant interval when the magnification of the low magnification and the high magnification is switched, thereby making a simpler and more compact structure and Product design is possible.

1 is an exemplary view of the aiming optical system of the previous variable magnification method.
2 is a diagram schematically illustrating an optical sight having a dual magnification according to an embodiment of the present invention.
FIG. 3 is a diagram schematically showing the conversion of the magnification shown in FIG. 1 to a magnification of 4; FIG.
4 is a schematic operation diagram of the present embodiment.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

2 is a view schematically showing a sight optical system having a dual magnification according to an embodiment of the present invention, FIG. 3 is a diagram schematically showing the conversion of the variable magnification shown in FIG. 1 to 4 magnification, FIG. 4 is a schematic operation diagram of this embodiment.

As shown in these drawings, the sight optical system having dual magnification according to the present embodiment is provided inside the sight body S and is incident through the objective lens unit 100 and the objective lens unit 100 . The condensing lens 200 for condensing the , and the sizing lens unit provided inside the sight body (S) so as to be disposed at the rear of the condenser lens 200 to establish an inverted image from the front of the condenser lens 200 and to change the magnification. 300 and an eyepiece unit 400 provided in the sight body (S) to enlarge the image so as to be disposed at the rear of the erection lens unit 300 .

As shown in FIG. 2 , the objective lens unit 100 serves to focus or form a beam emitted from an object on the first focal plane, which is disposed at the forefront of the sight body S.

In this embodiment, the objective lens unit 100 may be provided by bonding the convex objective lens 110 and the objective concave lens 120 to each other, as shown in FIGS. 2 to 4 . That is, in the present embodiment, the objective lens unit 100 may be provided as a double junction lens of the objective convex lens 110 and the objective concave lens 120 .

As shown in FIG. 2 , the condensing lens 200 is provided inside the scope body S so as to be disposed between the objective lens unit 100 and the first orthogonal lens 310 and is focused on the first focal plane. After diffusing, it serves to condense the proceeding beam.

In the present embodiment, when the scope variable magnification is changed, the condensing lens 200 may maintain a fixed position inside the scope body S.

As shown in FIG. 2 , the erected lens unit 300 is provided inside the sight body S to be disposed between the condensing lens 200 and the eyepiece unit 400 from the front of the condensing lens 200 . It serves to establish an inverted phase and to change the magnification from low magnification to high magnification or vice versa.

In this embodiment, the erected lens unit 300, as shown in FIGS. 2 to 4, a first erected lens 310 disposed between the condensing lens 200 and the eyepiece 400, and the second It includes a second erected lens 320 disposed between the first erected lens 310 and the eyepiece 400 .

In the present embodiment, at least one of the first orthogonal lens 310 and the second orthogonal lens 320 may be provided as a double junction lens.

As shown in FIG. 2 , the first erected lens 310 of the erected lens unit 300 includes a first concave lens 311 and a first concave lens 311 disposed to face the condensing lens 200 . and a first convex lens 312 disposed between the first concave lens 311 and the second orthogonal lens 320 and provided to be bonded to the first convex lens 312 .

In this embodiment, in the first rectified lens 310, the order of the first concave lens 311 and the first convex lens 312 is reversed, so that the first convex lens 312 and the first concave lens 311 are arranged in the order. also includes

As shown in FIG. 2 , the second erected lens 320 of the erected lens unit 300 is a second convex lens 321 disposed between the first convex lens 312 and the eyepiece 400 . and a second concave lens 322 provided to be bonded to the second convex lens 321 and disposed between the second convex lens 321 and the eyepiece unit 400 .

In this embodiment, in the second rectified lens 320, the order of the second convex lens 321 and the second concave lens 322 is reversed, so that the second concave lens 322 and the second convex lens 321 are arranged in the order of It also includes being

The eyepiece unit 400, as shown in FIG. 2, serves to enlarge the image provided inside the scope body (S) so as to be disposed at the rear of the second sizing lens 320.

In this embodiment, the eyepiece unit 400, as shown in FIG. 2, a concave eyepiece lens 410 disposed inside the scope body S so as to be disposed opposite to the second concave lens 322, and, It includes an eyepiece convex lens 420 provided to be bonded to the eyepiece concave lens 410 , and a lens member 430 disposed to be spaced apart from the eyepiece convex lens 420 .

Hereinafter, the operation of the present embodiment will be briefly described with reference to FIG. 4 .

In the present embodiment, the objective lens unit 100 , the first focal plane, the condensing lens 200 , the first rectified lens 310 , the second oriented lens 320 , the second focal plane, and the eyepiece unit 400 are The light proceeds in order.

The objective lens unit 100 receives an image of an object in a certain range (field of view or Field Of View, FOV) and performs a primary image formation on the first focal plane, and after the primary image formation, light is spread out. The condensing lens 200 serves to condense the light, and the light collected by the condensing lens 200 is transmitted to the first rectifying lens 310 .

The first orthogonal lens 310 and the second orthogonal lens 320 serve to form an inverted image on the first focal plane into an erected image on the second focal plane. In addition, the first oriented lens 310 and the second oriented lens 320 generate a change in magnification while moving between the condensing lens 200 and the eyepiece unit 400 .

That is, the effective focal length (EFL) change of the optical system from the objective lens unit 100 to the second orthogonal lens 320 due to the positional movement of the first oriented lens 310 and the second oriented lens 320 is occurs Since the focal length of this optical system divided by the focal length of the eyepiece unit 400 becomes the magnification of the entire aiming optical system, a change in magnification occurs according to the change in the positions of the first orthogonal lens 310 and the second orthogonal lens 320 . it can be said that

An image is formed on the retina of the eye so that the image magnified to the eye can be viewed like a magnifying glass through the eyepiece unit 400 of the formed image of the second focal plane, which is changed to the two modes of the lowest/highest magnification. In the present embodiment, a mesh line on which a pattern is engraved may be located on any one of the first focal plane and the second focal plane.

Dual designed to implement only the lowest magnification (1X) and highest magnification (4X), eliminating the magnification operation corresponding to the intermediate magnification section of 1.75X, 2.50X, 3.25X, etc. in the previous variable magnification sighting optical system of FIG. A magnification aiming optical system may be implemented as shown in FIG. 4 .

In FIG. 2, the lens optical system is designed so that the distance between the first rectified lens 310 and the second rectified lens 320 in the form of a double junction lens is constant at both the lowest magnification (1X) and the highest magnification (4X), thereby providing dual variable magnification. It is possible to implement the mechanical operation structure for the more conveniently.

That is, when switching the magnification from the lowest magnification (1X) to the highest magnification (4X), only the intervals d1 and d3 are changed while the interval d2 is fixed. becomes a single integrated group lens, and only the lowest magnification (1X) or the highest magnification (4X) can be realized while reciprocating only in two positions.

Table 1 below shows lens design data for this embodiment.

Meanwhile, in the present embodiment, the sizing lens unit 300 may be moved by changing the rotational motion to a linear motion using a rotational ring. Alternatively, after providing a button or lever to be connected to the sizing lens unit 300 , the sizing lens unit 300 may be moved by pressing the button or moving the lever back and forth in the longitudinal direction of the sight body (S).

As described above, the present embodiment includes a plurality of rectified lenses that implement only a low magnification and a high magnification, and the plurality of rectified lenses are moved while maintaining a constant interval when the magnification of the low magnification and the high magnification is switched, making it simpler and more compact. One structure and product design is possible.

As such, the present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such modifications or variations are included in the claims of the present invention.

100: objective lens unit 110: convex objective lens
120: concave objective lens 200: condensing lens
300: oriented lens unit 310: first oriented lens
311: first concave lens 312: first convex lens
320: second rectified lens 321: second convex lens
322: second concave lens 400: eyepiece unit
410: eyepiece concave lens 420: eyepiece convex lens
430: lens member S: scope body

Claims (9)

a condensing lens provided inside the sight body and condensing the beam incident through the objective lens unit;
a sizing lens unit provided inside the sight body so as to be disposed at the rear of the condenser lens to establish and change the image inverted from the front of the condenser lens; and
and an eyepiece unit provided on the scope body to enlarge the image so as to be disposed at the rear of the erection lens unit,
The rectified lens unit includes a plurality of oriented lenses that implement only low magnification and high magnification,
When the magnification of the low magnification and the high magnification are switched, the plurality of orthogonal lenses are moved while maintaining a certain interval,
The rectified lens unit may include: a first rectified lens disposed between the condensing lens and the eyepiece unit; and a second sizing lens disposed between the first sizing lens and the eyepiece unit,
When switching from the low magnification to the high magnification, the distance between the first oriented lens and the second oriented lens is maintained constant,
A first focal plane is provided between the condensing lens and the first orthogonal lens,
A sight optical system in which a second focal plane is provided between the second orthogonal lens and the eyepiece unit. delete The method according to claim 1,
At least one of the first oriented lens and the second oriented lens is a sighting optical system provided as a double junction lens. The method according to claim 1,
The first rectified lens,
a first concave lens disposed to face the condensing lens; and
and a first convex lens provided to be bonded to the first concave lens and disposed between the first concave lens and the second erected lens. The method according to claim 1,
The second rectified lens,
a second convex lens disposed between the first convex lens of the first rectified lens and the eyepiece unit; and
and a second concave lens provided to be bonded to the second convex lens and disposed between the second convex lens and the eyepiece unit. The method according to claim 1,
The objective lens unit is an optical sight provided with a double junction lens. delete 5. The method according to claim 4,
The first rectified lens,
A sighting scope optical system in which the order of the first concave lens and the first convex lens is changed and the first convex lens and the first concave lens are disposed in the order. 6. The method of claim 5,
The second rectified lens,
A sighting scope optical system in which the order of the second convex lens and the second concave lens is reversed, and the second concave lens and the second convex lens are arranged in the order.

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