Miniaturized optical lens focusing device

Abstract

The utility model discloses a miniaturized optical lens focusing device, which comprises a lens diaphragm, a first lens arranged on one side of the lens diaphragm, a second lens arranged on one side, far away from the lens diaphragm, of the first lens, an installation cylinder fixedly connected to the outer wall of the second lens, and a fourth lens arranged on one side, far away from the second lens, of the installation cylinder. The miniaturized optical lens focusing device further comprises an adjusting device. The utility model relates to the technical field of optical lenses, through the cooperation of the adjusting device and the telescopic structure, the adjusting device is used for adjusting the distance between the first lens and the second lens, the telescopic structure is used for changing the distance between the second lens and the fourth lens, and the distance between the lenses is slightly adjusted, so that the distance between the lenses is adjusted. Therefore, the focusing distance of the lens is changed, and the focusing of the lens is stable regardless of the space size of the lens.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, specifically a miniaturized optical lens focusing device. Background Technology

[0002] With the development of imaging technologies for mobile phones, security, and automobiles, the demand for miniaturized camera devices is increasing. The requirements for optical lenses in miniaturizing camera devices are usually considered from two aspects: on the one hand, the pixels of the detectors in miniaturized camera devices are getting smaller and smaller, and on the other hand, the number of pixels in the detectors in miniaturized camera devices is increasing. As a result, the optical lenses of miniaturized camera devices need to be able to accommodate larger detector target surfaces while having a small volume, and have higher optical modulation transfer functions at higher spatial frequencies.

[0003] In existing technology, two lens barrels are connected together by threads. By rotating one lens barrel, the lens inside is focused, thereby making the object seen through the lens barrel clear.

[0004] However, in actual use, when the space becomes smaller, the adjustable distance between the lenses will be shorter, which will reduce the focusing effect of the existing lens. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a miniaturized optical lens focusing device, which solves the problem that when the space available for use becomes smaller, the adjustable distance between the lenses becomes shorter, thereby reducing the focusing effect of existing lenses.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a miniaturized optical lens focusing device, comprising a lens aperture, a first lens disposed on one side of the lens aperture, a second lens disposed on the side of the first lens away from the lens aperture, a mounting cylinder fixedly connected to the outer wall of the second lens, and a fourth lens disposed on the side of the mounting cylinder away from the second lens. The miniaturized optical lens focusing device further comprises an adjustment device mounted on the outer wall of the lens aperture; a telescopic structure mounted on the side of the mounting cylinder away from the lens aperture; and a connecting assembly mounted on the side of the telescopic structure away from the mounting cylinder. The adjustment device changes the distance between the first and second lenses, the telescopic structure changes the distance between the mounting cylinder and the fourth lens, and the connecting assembly fixes the lens.

[0007] Preferably, the adjusting device includes a fixing ring, which is fixedly connected to the outer wall of the lens aperture; a mounting tube is connected to one side of the fixing ring and inserted into the inner wall of the mounting cylinder; an adjusting ring is rotatably connected to the outer wall of the mounting cylinder via a bearing, and its inner wall is threadedly connected to the outer wall of the mounting tube; a limiting device is disposed on the inner wall of the mounting tube; wherein, through the cooperation of the fixing ring and the mounting tube, the adjusting ring drives the mounting tube to move, and the limiting device stabilizes the mounting tube during movement.

[0008] Preferably, the limiting device includes a sliding groove, which is formed on the inner wall of the mounting tube; the limiting frame is slidably engaged with the inner wall of the sliding groove and fixedly connected to the inner wall of the mounting tube; wherein, through the cooperation of the sliding groove and the limiting frame, the mounting tube is stabilized when moving.

[0009] Preferably, a third lens is fixedly connected to the inner wall of the mounting cylinder on the side away from the second lens. The telescopic structure includes a protective tube, which is fixedly connected to the outer wall of the mounting cylinder; a connecting cylinder is fixedly connected to the outer wall of the fourth lens and inserted into the inner wall of the protective tube, with the inner wall sleeved on the outer wall of the mounting cylinder; and a ring is fixedly connected to the outer wall of the mounting cylinder, with its outer wall threaded to the inner wall of the connecting cylinder. The protective tube drives the connecting cylinder to move through the cooperation of the connecting cylinder and the ring.

[0010] Preferably, the connecting assembly includes a connecting ring connected to the end of the connecting cylinder away from the mounting cylinder; the protective lens is fixedly connected to the inner wall of the connecting cylinder; wherein the lens is mounted by the connecting ring, and the protective lens protects the lens inside the connecting cylinder.

[0011] Beneficial effects

[0012] This invention provides a miniaturized optical lens focusing device. It offers the following advantages: This miniaturized optical lens focusing device, through the cooperation of an adjustment device and a telescopic structure, uses the adjustment device to adjust the distance between the first and second lenses, and the telescopic structure to change the distance between the second and fourth lenses. By slightly adjusting the distance between each lens, the focusing distance of the lens is changed, thus ensuring stable focusing regardless of the available space.

[0013] By coordinating the protective tube, connecting cylinder, and ring, when adjusting the distance between the fourth and third lenses, rotating the protective tube causes the mounting cylinder to rotate, making the inner wall of the connecting cylinder threadedly connected to the outer wall of the ring. This allows the mounting cylinder and connecting cylinder to move left and right, changing the distance between the fourth and third lenses to achieve focusing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 3 for Figure 1 A structural schematic diagram of the central protective pipe, adjusting ring, and mounting pipe;

[0017] Figure 4 for Figure 1 A schematic diagram of the structure of the central protective tube, mounting cylinder, and third lens.

[0018] In the diagram: 1. Lens aperture; 11. First lens; 12. Second lens; 13. Third lens; 14. Fourth lens; 15. Mounting tube; 2. Adjustment device; 21. Fixing ring; 22. Mounting tube; 23. Adjustment ring; 24. Limiting device; 241. Slide groove; 242. Limiting frame; 3. Telescopic structure; 31. Protective tube; 32. Connecting tube; 33. Ring; 4. Connecting assembly; 41. Connecting ring; 42. Protective lens. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In practical use, when the space becomes smaller, the adjustable distance between the lenses will be shortened, thereby reducing the focusing effect of the existing lens.

[0021] In view of this, the present invention provides a miniaturized optical lens focusing device, which solves the problem that when the space is reduced in actual use, the adjustable distance between the lenses becomes shorter, thereby reducing the focusing effect of existing lenses.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1: By Figure 1-4It is known that a miniaturized optical lens focusing device includes a lens aperture 1, wherein the lens aperture 1 can control the amount of light entering the optical system. In well-lit conditions, reducing the aperture decreases the amount of light entering the lens, preventing overexposure or over-brightness. In low-light environments, increasing the aperture increases the amount of light entering the lens, resulting in a brighter image and ensuring proper exposure. A first lens 11 is located on one side of the lens aperture 1, and a second lens 12 is located on the side of the first lens 11 away from the lens aperture 1. A mounting tube 15 is fixedly connected to the outer wall of the second lens 12, and a fourth lens 14 is located on the side of the mounting tube 15 away from the second lens 12. The miniaturized optical lens focusing device also includes an adjustment device 2, a telescopic structure 3, and a connecting assembly 4. The adjustment device 2 is mounted on the outer wall of the lens aperture 1; the telescopic structure 3 is mounted on the side of the mounting tube 15 away from the lens aperture 1; and the connecting assembly 4 is mounted on the side of the telescopic structure 3 away from the mounting tube 15. The adjustment device 2 changes the distance between the first lens 11 and the second lens 12, the telescopic structure 3 changes the distance between the mounting tube 15 and the fourth lens 14, and the connecting assembly 4 fixes the lens.

[0024] In the specific implementation process, it is worth noting that the first lens 11 and the third lens 13 form the first lens group, and the second lens 12 and the fourth lens 14 form the second lens group. Each group is configured with one convex lens and one concave lens. Focusing is achieved by adjusting the distance between the two lens groups. The distance between the first lens 11 and the second lens 12 is adjusted by using the adjustment device 2, and the distance between the third lens 13 and the fourth lens 14 is adjusted by the telescopic structure 3. By combining the two, the focusing effect of the lens is better and more accurate, and it is not limited by the installation space and can be set according to the size of the lens barrel.

[0025] Furthermore, the adjustment device 2 includes a fixing ring 21, a mounting tube 22, an adjustment ring 23, and a limiting device 24. The fixing ring 21 is fixedly connected to the outer wall of the lens aperture 1; the mounting tube 22 is connected to one side of the fixing ring 21 and inserted into the inner wall of the mounting cylinder 15; the adjustment ring 23 is rotatably connected to the outer wall of the mounting cylinder 15 through a bearing, and its inner wall is threadedly connected to the outer wall of the mounting tube 22; the limiting device 24 is disposed on the inner wall of the mounting tube 22; wherein, through the cooperation of the fixing ring 21 and the mounting tube 22, the adjustment ring 23 drives the mounting tube 22 to move, and the limiting device 24 stabilizes the mounting tube 22 during movement;

[0026] In the specific implementation process, it is worth noting that one side of the inner wall of the adjusting ring 23 is rotatably connected to the outer wall of the mounting cylinder 15 through a bearing, while the other side of the inner wall is threadedly connected to the outer wall of the mounting tube 22. Therefore, when the adjusting ring 23 rotates, the mounting tube 22 will move on the inner wall of the mounting cylinder 15. Moreover, under the action of the limiting device 24, the adjusting ring 23 and the mounting cylinder 15 are prevented from rotating synchronously due to friction. In this way, the distance between the first lens 11 and the second lens 12 is changed when the adjusting ring 23 is rotated.

[0027] Furthermore, the limiting device 24 includes a sliding groove 241 and a limiting frame 242. The sliding groove 241 is formed on the inner wall of the mounting tube 22; the limiting frame 242 is slidably engaged with the inner wall of the sliding groove 241 and fixedly connected to the inner wall of the mounting cylinder 15; wherein, through the cooperation of the sliding groove 241 and the limiting frame 242, the mounting tube 22 is stabilized when moving.

[0028] In the specific implementation process, it is worth noting that a limit frame 242 is provided on the upper part of the inner wall of the mounting cylinder 15, and a sliding groove 241 is provided on the inner wall of the mounting tube 22 at the position corresponding to the limit frame 242. The limit frame 242 is slidably engaged with the inner wall of the sliding groove 241. When the mounting tube 22 moves, the sliding groove 241 will move on the outer wall of the limit frame 242, so that the mounting tube 22 is stable when it moves.

[0029] Specifically, when using this miniaturized optical lens focusing device, when using the lens and focusing, the lens is mounted on the camera using the connecting assembly 4. When focusing, the adjusting ring 23 in front of the lens is rotated. The inner wall of the adjusting ring 23 is threadedly connected to the outer wall of the mounting tube 22. A sliding groove 241 is provided on the inner wall of the mounting tube 22 and slides and engages with the limiting bracket 242 on the inner wall of the mounting cylinder 15. Therefore, when the adjusting ring 23 rotates, the mounting tube 22 moves laterally and drives the first lens 11, changing the distance between the first lens 11 and the second lens 12. Under the action of the telescopic structure 3, the distance between the fourth lens 14 and the third lens 13 is changed, thus completing the focusing of the lens.

[0030] Example 2: From Figure 1-4 It is known that a third lens 13 is fixedly connected to the inner wall of the mounting cylinder 15 away from the second lens 12. The telescopic structure 3 includes a protective tube 31, a connecting tube 32, and a ring 33. The protective tube 31 is fixedly connected to the outer wall of the mounting cylinder 15. The connecting tube 32 is fixedly connected to the outer wall of the fourth lens 14 and inserted into the inner wall of the protective tube 31, with the inner wall sleeved on the outer wall of the mounting cylinder 15. The ring 33 is fixedly connected to the outer wall of the mounting cylinder 15, with its outer wall threadedly connected to the inner wall of the connecting tube 32. Through the cooperation of the connecting tube 32 and the ring 33, the protective tube 31 drives the connecting tube 32 to move.

[0031] In the specific implementation process, it is worth noting that when adjusting the distance between the fourth lens 14 and the third lens 13, by rotating the protective tube 31, the mounting cylinder 15 is rotated, so that the inner wall of the connecting cylinder 32 is threadedly connected to the outer wall of the ring 33. In this way, the mounting cylinder 15 and the connecting cylinder 32 can move left and right, thereby changing the distance between the fourth lens 14 and the third lens 13 to complete the focusing.

[0032] Furthermore, the connecting assembly 4 includes a connecting ring 41 and a protective lens 42. The connecting ring 41 is connected to the end of the connecting cylinder 32 away from the mounting cylinder 15. The protective lens 42 is fixedly connected to the inner wall of the connecting cylinder 32. The lens is installed through the connecting ring 41, and the protective lens 42 protects the lens inside the connecting cylinder 32.

[0033] In the specific implementation process, it is worth noting that the protective lens 42 has a lens with high light transmittance. Its material is resin, which has good light transmittance and protects the lens inside the lens without affecting focus. The outer and inner walls of the connecting ring 41 are provided with threads, which can better connect with the camera. The specific connection method and size of the connecting ring 41 can be designed according to actual needs. This embodiment only provides one possible implementation and is not all embodiments.

[0034] Specifically, based on the above embodiments, when using the lens, the connecting ring 41 is inserted in front of the camera lens. After the lens is installed, the telescopic structure 3 is used to change the distance between the third lens 13 and the fourth lens 14, and the adjustment device 2 is used to change the distance between the first lens 11 and the second lens 12, thereby completing the focusing of the lens.

[0035] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniaturized optical lens focusing device, comprising a lens aperture (1), characterized in that: A first lens (11) is provided on one side of the lens aperture (1), and a second lens (12) is provided on the side of the first lens (11) away from the lens aperture (1). A mounting cylinder (15) is fixedly connected to the outer wall of the second lens (12), and a fourth lens (14) is provided on the side of the mounting cylinder (15) away from the second lens (12). The miniaturized optical lens focusing device further includes: Adjustment device (2) is installed on the outer wall of lens aperture (1); Telescopic structure (3) is installed on the side of the mounting cylinder (15) away from the lens aperture (1); The connecting component (4) is installed on the side of the telescopic structure (3) away from the mounting cylinder (15); The distance between the first lens (11) and the second lens (12) is changed by the adjustment device (2), the distance between the mounting cylinder (15) and the fourth lens (14) is changed by the telescopic structure (3), and the connecting assembly (4) fixes the lens.

2. The miniaturized optical lens focusing device according to claim 1, characterized in that: The regulating device (2) includes: A retaining ring (21) is fixedly connected to the outer wall of the lens aperture (1); The mounting tube (22) is connected to one side of the fixing ring (21) and inserted into the inner wall of the mounting cylinder (15); The adjusting ring (23) is rotatably connected to the outer wall of the mounting cylinder (15) via a bearing, and its inner wall is threadedly connected to the outer wall of the mounting tube (22). A limiting device (24) is provided on the inner wall of the mounting tube (22); The fixing ring (21) and the mounting tube (22) work together to make the adjusting ring (23) drive the mounting tube (22) to move, and the limiting device (24) stabilizes the mounting tube (22) when it moves.

3. The miniaturized optical lens focusing device according to claim 2, characterized in that: The limiting device (24) includes: A groove (241) is formed on the inner wall of the mounting pipe (22); The limiting bracket (242) is slidably engaged with the inner wall of the slide groove (241) and fixedly connected to the inner wall of the mounting cylinder (15); The mounting tube (22) is stabilized during movement through the cooperation of the slide (241) and the limiting bracket (242).

4. The miniaturized optical lens focusing device according to claim 1, characterized in that: A third lens (13) is fixedly connected to the inner wall of the mounting cylinder (15) away from the second lens (12), and the telescopic structure (3) includes: The protective tube (31) is fixedly connected to the outer wall of the mounting cylinder (15); The connecting tube (32) is fixedly connected to the outer wall of the fourth lens (14) and inserted into the inner wall of the protective tube (31), and the inner wall is sleeved on the outer wall of the mounting tube (15); The ring (33) is fixedly connected to the outer wall of the mounting cylinder (15), and the outer wall is threaded to the inner wall of the connecting cylinder (32); In this process, the protective tube (31) drives the connecting tube (32) to move through the cooperation of the connecting tube (32) and the ring (33).

5. A miniaturized optical lens focusing device according to claim 4, characterized in that: The connection component (4) includes: A connecting ring (41) is connected to the end of the connecting cylinder (32) away from the mounting cylinder (15); Protective goggles (42) are fixedly connected to the inner wall of the connecting cylinder (32); The lens is installed via the connecting ring (41), and the protective lens (42) protects the lens inside the connecting tube (32).

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