Optical system of oversized zoom sighting telescope

Abstract

The utility model discloses an ultra-large zoom optical system for a sighting telescope, which comprises an eyepiece group (1), a reticle (2), a zoom lens group (3) and an objective lens group (4) which are sequentially arranged, the eyepiece group (1) comprises an eyepiece zoom lens group (7), the eyepiece zoom lens group (7) is provided with a plurality of lenses, and the distance between the lenses is adjustable; the zoom lens group (3) is provided with a plurality of zoom lenses, and the distance between the plurality of zoom lenses is adjustable; the objective lens group (4) comprises an objective lens zoom lens group (8), the objective lens zoom lens group (8) is provided with a plurality of lenses, and the distance between the plurality of lenses is adjustable. The sighting telescope has the technical effects and advantages that the magnification change range of the sighting telescope is large; used components are low in price and cost; different magnifications of the sighting telescope can be quickly switched without professional equipment; the method is simple and feasible, has low skill requirements on personnel and is very easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of sights, in particular to an optical system of a super-large variable magnification sight. Background Art

[0002] The working principle of the existing sight to achieve magnification change is: the objective lens group converges the infinite image and forms an image in front of the zoom lens group, the zoom lens group transposes and magnifies the image and forms an image on the reticle, and then the image is magnified by the eyepiece group for human eyes to observe, so that a normal magnified image can be observed. At the same time, by changing the interval between the two zoom lenses in the zoom lens group, different magnification changes can be achieved. To achieve different magnification changes, strict calculations and precision machining are required to achieve the change of the interval between the two zoom lenses.

[0003] Defects and shortcomings of the existing technology:

[0004] 1. The zoom ratio is not large, and currently only a maximum zoom ratio of 12 times can be achieved;

[0005] 2. Due to structural limitations, after the magnification exceeds 6 times, if you want to further change the magnification, the minimum distance between the two zoom lenses is very small, which causes difficulties in processing and assembly. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides an ultra-large variable magnification sight optical system.

[0007] The technical solution of this utility model is as follows:

[0008] The optical system of the super-large variable magnification sight comprises an eyepiece group 1, a reticle 2, a variable magnification lens group 3, and an objective lens group 4, which are arranged in sequence.

[0009] The eyepiece assembly 1 includes an eyepiece zoom lens assembly 7, wherein the eyepiece zoom lens assembly 7 is provided with a plurality of lenses, and the spacing between the plurality of lenses is adjustable;

[0010] The zoom lens group 3 is provided with a plurality of zoom lenses, and the spacing between the plurality of zoom lenses is adjustable;

[0011] The objective lens group 4 includes an objective lens zoom lens group 8. The objective lens zoom lens group 8 is provided with a plurality of lenses, and the spacing between the plurality of lenses is adjustable.

[0012] The eyepiece assembly 1 includes four lenses, which are a convex lens, a cemented lens, a convex lens, and a concave lens in order from the eyepiece to the objective lens. The eyepiece zoom lens assembly 7 is composed of a cemented lens and a convex lens.

[0013] The variable power lens group 3 includes four lenses, which are a cemented lens, a variable power lens 2 6, a variable power lens 1 5, and a convex lens in order from the eyepiece to the objective lens.

[0014] The objective lens group 4 includes five lenses, which are a meniscus lens, a convex lens, a convex lens, a convex lens, and a cemented lens from the eyepiece to the objective lens. The objective lens zoom lens group 8 is composed of three convex lenses.

[0015] Furthermore, the zoom lens group 3 and the objective lens group 4 are used in combination alone.

[0016] Furthermore, the zoom lens group 3 and the eyepiece group 1 are used in combination alone.

[0017] Furthermore, the eyepiece group 1, the graticule plate 2, the magnification lens group 3, and the objective lens group 4 are all arranged inside the outer shell of the sight.

[0018] Technical effects and advantages of the utility model:

[0019] 1. The scope has a wide range of magnification changes;

[0020] 2. The components used are cheap and low cost;

[0021] 3. Quickly switch between different magnifications of the scope without the help of professional equipment;

[0022] 4. This method is simple and feasible, does not require high skills, and is very easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an optical diagram of an ultra-large variable magnification scope. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1

[0026] like Figure 1Shown is the optical schematic diagram of the super-variable magnification scope. The working principle is as follows: the objective lens group (4) converges the infinite image and forms an image in front of the zoom lens group 3. The zoom lens group 3 transposes and magnifies the image and forms an image on the graticule 2. After the image is magnified by the eyepiece group 1, it is observed by the human eye, and a normally magnified image can be observed. By changing the interval between the zoom lens 1 5 and the zoom lens 2 6, the change of different magnifications is achieved, which is the first-level sight magnification change. On the basis of the first-level sight magnification change, by adjusting the optical interval of each lens of the objective lens zoom lens group 8 in the objective lens group 4, the optical focal length of the objective lens group 4 is changed, thereby achieving the change of the entire sight magnification, achieving the second-level sight magnification change, and this magnification change is a multiple increase of the first-level sight magnification change. At the same time, by adjusting the positional relationship of each lens of the eyepiece zoom lens group 7 in the eyepiece group 1, the focal length of the eyepiece group 1 is changed, achieving the third-level sight magnification change, and this magnification change is a multiple increase of the first-level sight magnification change, thereby achieving the optical realization of the super-large zoom sight.

[0027] Technical principle:

[0028] The magnification value of the sight = {focal length value of the objective lens group 4 / focal length value of the eyepiece group 1}*{magnification value of the zoom lens group 3}. At present, the optical system of the sight is to fix the focal length values ​​of the objective lens group 4 and the eyepiece group 1, and to achieve different magnifications by changing the interval between the zoom lens 1 5 and the zoom lens 2 6 inside the zoom lens group 3. On this basis, this scheme is to change the focal length values ​​of the objective lens group 4 and the eyepiece group 1 at the same time, so as to achieve a large change in the magnification of the sight after different combinations;

[0029] Through the description of the above principles, an ultra-large magnification range can be achieved, and one lens can be used for multiple purposes.

[0030] In this patent, the principal optical axes of all lenses are on the same straight line.

[0031] Embodiment 2

[0032] Furthermore, the zoom lens group 3 and the objective lens group 4 can be used in combination separately.

[0033] Embodiment 3

[0034] Furthermore, the zoom lens group 3 and the eyepiece group 1 can be used in combination separately.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Ultra-large variable magnification scope optical system, characterized by: The invention comprises an eyepiece group (1), a graticule (2), a magnification lens group (3), and an objective lens group (4) which are arranged in sequence. The eyepiece assembly (1) comprises an eyepiece zoom lens assembly (7), wherein the eyepiece zoom lens assembly (7) is provided with a plurality of lenses, and the spacing between the plurality of lenses is adjustable; The variable power lens group (3) is provided with a plurality of variable power lenses, and the spacing between the plurality of variable power lenses is adjustable; The objective lens group (4) comprises an objective lens zoom lens group (8), and the objective lens zoom lens group (8) is provided with a plurality of lenses, and the spacing between the plurality of lenses is adjustable.

2. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The eyepiece assembly (1) comprises four lenses, which are, from the eyepiece to the objective lens, a convex lens, a cemented lens, a convex lens, and a concave lens, respectively. The eyepiece zoom lens assembly (7) is composed of a cemented lens and a convex lens.

3. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The variable power lens group (3) comprises four lenses, which are, from the eyepiece to the objective lens, a cemented lens, a variable power lens 2 (6), a variable power lens 1 (5), and a convex lens.

4. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The objective lens group (4) comprises five lenses, which are, from the eyepiece to the objective lens, a meniscus lens, a convex lens, a convex lens, a convex lens, and a cemented lens, respectively. The objective lens zoom lens group (8) is composed of three convex lenses.

5. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The variable magnification lens group (3) and the objective lens group (4) can be used in combination separately.

6. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The magnifying lens group (3) and the eyepiece group (1) can be used in combination separately.

7. The ultra-large variable magnification sight optical system according to claim 1, characterized in that: The eyepiece group (1), the graticule (2), the variable-power lens group (3) and the objective lens group (4) are all arranged inside the outer shell of the sight.

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