Optical lens group

Abstract

The utility model discloses an optical lens group which comprises a lens group cylinder, a first lens frame is installed inside the lens group cylinder, a first optical lens is installed inside the first lens frame, a second lens frame is installed at the rear end of the first lens frame, and a third optical lens is installed inside the second lens frame. A third lens frame is mounted at the rear end of the second lens frame, and a second optical lens is mounted in the third lens frame; the first limiting sliding grooves are formed in the two sides of the inner wall of the lens set cylinder, second limiting sliding blocks are movably installed in the first limiting sliding grooves, and second limiting sliding grooves are formed in the upper portion of the inner wall of the lens set cylinder. According to the optical lens group, the threaded rods corresponding to the lens frames are arranged, and the threaded rods are rotated to push the first lens frame or the second lens frame corresponding to the threaded rods to move, so that the distance between the optical lenses is adjusted, and the optical performance is optimized, for example, aberration is reduced, the resolution ratio is increased or the image quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens groups, in particular to an optical lens group. Background Art

[0002] An optical lens group is a system composed of multiple optical lenses combined in a specific design and sequence. These lenses work together to achieve optical functions such as focusing, imaging, and spectrometry.

[0003] China Authorization Announcement No. CN211928279U discloses a lens group of an optical lens, which adopts the technical solution of comprising a first lens, wherein the lower end of the first lens is adhered to the second lens by a pressure-sensitive adhesive layer, the first lens is provided with an installation groove, the installation groove is provided with a second anti-reflection film, the second lens is provided with a placement groove, the placement groove is provided with a first anti-reflection film, the utility model forms an avoidance position for the first lens and the second lens through an annular groove, which is beneficial to improving the coaxiality of the optical axis centers of the first lens and the second lens, avoiding affecting the lens performance and imaging quality during installation, and the first lens and the second lens are tightly bonded by the pressure-sensitive adhesive film, and at the same time, the stress of the connection part is eliminated by the pressure-sensitive adhesive film, avoiding the generation of stray light at the connection part to affect the imaging quality, and the transmittance is increased by the second anti-reflection film and the first anti-reflection film in the first lens body and the second lens body.

[0004] The positions of the lenses in the existing optical lens assembly are fixed, which makes it difficult to adjust the positions of the optical lenses or requires them to be disassembled for adjustment, causing inconvenience in the use of the optical lens assembly. Therefore, we propose an optical lens assembly. Utility Model Content

[0005] The purpose of the present invention is to provide an optical lens set to solve the problem in the above background technology that the internal lenses of the existing optical lens set are fixed, the position of the optical lenses is inconvenient to adjust or the lenses need to be disassembled for adjustment, which brings inconvenience to the use of the optical lens set.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an optical lens set, comprising a lens set barrel, a first lens frame mounted inside the lens set barrel, a first optical lens mounted inside the first lens frame, a second lens frame mounted at the rear end of the first lens frame, a third optical lens mounted inside the second lens frame, a third lens frame mounted at the rear end of the second lens frame, a second optical lens mounted inside the third lens frame;

[0007] A first limiting slide groove is provided on both sides of the inner wall of the lens assembly barrel, a second limiting slider is movably installed inside the first limiting slide groove, a second limiting slide groove is provided above the inner wall of the lens assembly barrel, a first limiting slider is movably installed inside the second limiting slide groove, a movable groove corresponding to the first lens frame is provided below the inner wall of the lens assembly barrel, a connecting block is movably installed inside the first lens frame, an adjusting threaded rod is passed through the interior of the connecting block, and connecting bearings are installed at both ends of the adjusting threaded rod.

[0008] Preferably, the second limiting sliding block is integrally fixedly connected to the first lens frame, and the shape and size of the second limiting sliding block partially coincide with the shape and size of the interior of the first limiting sliding groove.

[0009] Preferably, the first limiting slider is fixedly connected to the first lens frame in an integral manner, and the shape and size of the first limiting slider partially coincide with the shape and size of the interior of the second limiting sliding groove.

[0010] Preferably, the connecting block is fixedly connected to the first lens frame in an integral manner, and the shape and size of the connecting block partially coincide with the internal shape and size of the movable groove, and the connecting block can move inside the movable groove.

[0011] Preferably, the adjusting threaded rod is movably connected to the lens assembly barrel via a connecting bearing, and the adjusting threaded rod is threadedly connected to the connecting block.

[0012] Preferably, the diameter of the first lens frame matches the diameter of the interior of the lens barrel, and the first lens frame is movable inside the lens barrel.

[0013] Preferably, the lens assembly barrel is fixedly connected to the third lens frame.

[0014] Compared with the prior art, the present invention provides an optical lens group with the following beneficial effects: the optical lens group, by setting a plurality of threaded rods corresponding to the lens frames, pushes the corresponding first lens frame or second lens frame to move by rotating the threaded rods, thereby adjusting the spacing between the optical lenses and optimizing the optical performance, such as reducing aberrations, improving resolution or improving image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the lens assembly barrel of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the lens assembly barrel and the first lens frame of the present invention.

[0018] In the figure: 1. lens assembly barrel; 2. movable groove; 3. adjusting threaded rod; 4. connecting bearing; 5. connecting block; 6. first optical lens; 7. first lens frame; 8. second lens frame; 9. third lens frame; 10. second optical lens; 11. third optical lens; 12. first limiting slider; 13. second limiting slider; 14. first limiting slide groove; 15. second limiting slide groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3, an optical lens group, including a lens group barrel 1, a first lens frame 7 is installed inside the lens group barrel 1; the diameter size of the first lens frame 7 coincides with the diameter size of the interior of the lens group barrel 1, and the first lens frame 7 is movable inside the lens group barrel 1, a first optical lens 6 is installed inside the first lens frame 7, a second lens frame 8 is installed at the rear end of the first lens frame 7, a third optical lens 11 is installed inside the second lens frame 8, and a third lens frame 9 is installed at the rear end of the second lens frame 8; the lens group barrel 1 is fixedly connected to the third lens frame 9, and a second optical lens 10 is installed inside the third lens frame 9; a first limiting slide groove 14 is opened on both sides of the inner wall of the lens group barrel 1, and a second limiting slider 13 is movably installed inside the first limiting slide groove 14; the second limiting slider 13 is fixedly connected to the first lens frame 7 as a whole, and the shape and size of the second limiting slider 13 partially coincide with the shape and size inside the first limiting slide groove 14, a second limiting slide groove 15 is opened on the upper inner wall of the lens group barrel 1, and the second limiting slide groove 15 is movably installed inside There is a first limit slider 12; the first limit slider 12 is fixedly connected to the first lens frame 7 as a whole, and the shape and size of the first limit slider 12 partially coincide with the shape and size inside the second limit slide groove 15, and a movable groove 2 corresponding to the first lens frame 7 is opened at the bottom of the inner wall of the lens barrel 1, and a connecting block 5 is movably installed inside the first lens frame 7; the connecting block 5 is fixedly connected to the first lens frame 7 as a whole, and the shape and size of the connecting block 5 partially coincide with the shape and size inside the movable groove 2, and the connecting block 5 can be moved inside the movable groove 2, and an adjusting threaded rod 3 is passed through the interior of the connecting block 5, and connecting bearings 4 are installed at both ends of the adjusting threaded rod 3; the adjusting threaded rod 3 is movably connected to the lens barrel 1 through the connecting bearing 4, and the adjusting threaded rod 3 is threadedly connected to the connecting block 5; by setting a plurality of threaded rods corresponding to the lens frames, the corresponding first lens frame 7 or the second lens frame 8 is pushed to move by rotating the threaded rod, so as to adjust the spacing between the optical lenses and optimize the optical performance, such as reducing aberrations, improving resolution or improving image quality.

[0021] Working principle: When using this optical lens group, first rotate the adjustment threaded rod 3, and push the connecting block 5 to move inside the movable groove 2 through the thread, thereby driving the first lens frame 7 to move inside the lens group barrel 1, so as to adjust the first optical lens 6 to the appropriate position. Then, the second limiting slider 13 and the first limiting groove 14 as well as the first limiting slider 12 and the second limiting groove 15 limit the first lens frame 7 to assist the first lens frame 7 to move better. Similarly, rotate the threaded rod corresponding to the second lens frame 8 to adjust the third optical lens 11 to the appropriate position. Secondly, when more optical lenses are installed inside the lens group barrel 1, the same operation can be performed. By adjusting the spacing between the optical lenses, the optical performance can be optimized, such as reducing aberrations, improving resolution or improving image quality. In addition, when the optical lens group is used for different focal lengths, working distances or imaging modes, it may also be necessary to adjust the lens spacing to meet specific requirements. This is the working principle of this optical lens group.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical lens set, characterized in that: include: A lens assembly barrel (1), wherein a first lens frame (7) is installed inside the lens assembly barrel (1), a first optical lens (6) is installed inside the first lens frame (7), a second lens frame (8) is installed at the rear end of the first lens frame (7), a third optical lens (11) is installed inside the second lens frame (8), a third lens frame (9) is installed at the rear end of the second lens frame (8), and a second optical lens (10) is installed inside the third lens frame (9); A first limiting slide groove (14) is provided on both sides of the inner wall of the lens assembly barrel (1); a second limiting slider (13) is movably installed inside the first limiting slide groove (14); a second limiting slide groove (15) is provided above the inner wall of the lens assembly barrel (1); a first limiting slider (12) is movably installed inside the second limiting slide groove (15); a movable groove (2) corresponding to the first lens frame (7) is provided below the inner wall of the lens assembly barrel (1); a connecting block (5) is movably installed inside the first lens frame (7); an adjusting threaded rod (3) is passed through the interior of the connecting block (5); and connecting bearings (4) are installed at both ends of the adjusting threaded rod (3).

2. The optical lens assembly according to claim 1, wherein: The second limiting slider (13) is fixedly connected to the first lens frame (7) in an integral manner, and the shape and size of the second limiting slider (13) partially coincide with the shape and size inside the first limiting sliding groove (14).

3. The optical lens assembly according to claim 1, wherein: The first limiting slider (12) is fixedly connected to the first lens frame (7) in an integral manner, and the shape and size of the first limiting slider (12) partially coincide with the shape and size inside the second limiting sliding groove (15).

4. The optical lens assembly according to claim 1, wherein: The connecting block (5) is integrally fixedly connected to the first lens frame (7), and the shape and size of the connecting block (5) partially coincide with the internal shape and size of the movable groove (2), and the connecting block (5) is movable inside the movable groove (2).

5. The optical lens assembly according to claim 1, wherein: The adjusting threaded rod (3) is movably connected to the lens assembly barrel (1) via a connecting bearing (4), and the adjusting threaded rod (3) is threadedly connected to the connecting block (5).

6. The optical lens assembly according to claim 1, wherein: The diameter of the first lens frame (7) matches the diameter of the interior of the lens assembly barrel (1), and the first lens frame (7) is movable inside the lens assembly barrel (1).

7. The optical lens assembly according to claim 1, wherein: The lens assembly barrel (1) is fixedly connected to the third lens frame (9).

Images