Adjustable lens C-type interface
By designing an adjustable lens C-type interface, the structural adjustment of the lens barrel limiting parts and camera connectors is used to solve the problem of degradation in imaging quality of C-type interface lenses in high-precision measurement applications, and the precise alignment and fixation of the lens and camera are achieved, and the imaging quality is improved.
Patent Information
- Application Number
- CN202422453257.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-11
AI Technical Summary
Existing C-interface lenses are difficult to ensure precise alignment between the camera and the lens in high-precision measurement applications, resulting in a degradation of imaging quality.
An adjustable lens C-type interface is designed. Through the structural design of the lens barrel limiter and the camera connection, the annular step hole and the adjustment screw hole are used to realize the concentricity correction between the lens barrel limiter and the camera connection, ensuring the concentric alignment between the lens and the camera.
It realizes precise alignment of the lens and camera, improves imaging quality and fixing firmness, and ensures high-definition imaging effect.
Smart Images
Figure CN223180532U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of optical lenses, and particularly relates to an adjustable lens C-type interface. Background Art
[0002] The C-type interface (C-Mount) for connecting a lens and a camera is a standard type of lens interface. The C-type interface lens provides a male thread that mates with the female thread of the camera. The diameter of the thread is 1 inch (25.4 mm), with 32 threads per inch, and is designed according to the "ANSI B1.1" international standard.
[0003] The C-type interface adopts a threaded bayonet design. After the lens is screwed and fixed on the camera, due to machining errors and the existence of a clearance fit between the threads, the lens may be eccentric. Therefore, in high-precision measurement applications, the existing C-type interface is difficult to ensure the precise alignment between the camera and the lens, affecting the imaging quality. Summary of the Utility Model
[0004] The utility model aims at the deficiencies of the prior art and provides an adjustable lens C-type interface.
[0005] In order to solve one or part or all of the above technical problems, the technical solution adopted by the utility model is as follows:
[0006] An adjustable lens C-type interface, comprising a lens barrel limiting member arranged at the end of the lens and a camera connecting member for connecting with the camera;
[0007] The lens barrel limiting member includes a hollow first connecting disk and a first annular step coaxially and fixedly arranged on one side of the first connecting disk; the camera connecting member includes a hollow second connecting disk and a second annular step coaxially and fixedly arranged on one side of the second connecting disk, and the second annular step is used for connecting with the camera;
[0008] The camera connecting member is provided with a first annular groove on the side far from the second annular step; when the first connecting disk is attached to the second connecting disk, the first annular step is in clearance fit with the first annular groove;
[0009] A plurality of annular stepped holes are arranged circumferentially on the second connecting disk, and fastening screw holes are arranged on the first connecting disk in one-to-one correspondence with the annular stepped holes;
[0010] The second connecting disk is provided with a plurality of adjusting screw holes along the radial direction, and adjusting screws are arranged in the adjusting screw holes, and the adjusting screws are used for abutting against the peripheral surface of the first annular step.
[0011] Further, the second annular step is provided with an external thread of C-type interface specification.
[0012] Further, a lens barrel is coaxially and fixedly arranged on one side of the first connecting plate away from the first annular step.
[0013] Further, a second annular groove is arranged on one side of the lens barrel limiting member close to the first annular step, and a third annular groove is arranged adjacent to the second annular groove. The inner diameter of the third annular groove is larger than that of the second annular groove.
[0014] Further, an optical lens is arranged in the lens barrel, a retaining ring for pressing the optical lens is arranged in the second annular groove, and the retaining ring is also clamped with the third annular groove.
[0015] Further, a sealing ring is also pressed between the optical lens and the retaining ring.
[0016] Further, a fastening screw for threadedly connecting with the fastening screw hole is arranged in the annular stepped hole.
[0017] Further, the circular angle of the annular stepped hole is 5° - 110°.
[0018] Further, the sizes of the annular stepped holes are the same and are evenly distributed along the circumferential direction of the second connecting plate.
[0019] Further, the annular stepped holes are all located outside the second annular step.
[0020] Further, the adjusting screw holes are all arranged between two of the annular stepped holes.
[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0022] The present utility model is provided with a lens barrel limiting member and a camera connecting member. The lens barrel limiting member is arranged at the connecting end of the lens, and the camera connecting member is used for connecting with a camera. When the lens barrel limiting member and the camera connecting member are buckled, there is a fitting clearance between them in the radial direction. Therefore, the concentricity between the lens barrel limiting member and the camera connecting member can be adjusted through the adjusting screw holes, thereby correcting the concentricity between the lens and the camera to ensure clear imaging of the camera.
[0023] The present utility model can adjust the alignment angle between the lens barrel limiting member and the camera connecting member by using the annular stepped holes. A fastening screw for threadedly connecting with the fastening screw hole is also arranged in the annular stepped hole. Therefore, the lens barrel limiting member and the camera connecting member can be fixed by using the fastening screw, and the two are firmly fixed. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The following further describes the present utility model in detail with reference to the accompanying drawings.
[0025] Figure 1: Schematic structural diagram of the present utility model;
[0026] Figure 2 : Schematic structural diagram of the lens barrel limiting member of the present utility model;
[0027] Figure 3 : Schematic structural diagram of the camera connecting member of the present utility model;
[0028] Figure 4 : Cross-sectional view of the lens barrel limiting member and the camera connecting member of the present utility model;
[0029] Figure 5 : Cross-sectional view of the camera connecting member of the present utility model;
[0030] Figure 6 : Cross-sectional view of the present utility model in the working state;
[0031] Wherein: 1 - lens barrel limiting member, 11 - first connection disk, 12 - lens barrel, 13 - first annular step, 14 - fastening screw hole, 15 - second annular groove, 16 - third annular groove, 2 - camera connecting member, 21 - second connection disk, 22 - second annular step, 23 - first annular groove, 24 - annular stepped hole, 25 - adjusting screw hole, 3 - adjusting screw, 4 - fastening screw, 5 - optical lens, 6 - sealing ring, 7 - retaining ring. Specific embodiments
[0032] In order to better understand the present utility model, the content of the present utility model will be further clearly elaborated below in conjunction with embodiments and drawings. However, the protected content of the present utility model is not limited to the following embodiments. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.
[0033] Embodiment 1: Refer to Figures 1 - 6 , the purpose of this embodiment is to provide an adjustable lens C-type interface, including a lens barrel limiting member 1 arranged at the end of the lens and a camera connecting member 2 for connecting with a camera. The lens barrel limiting member 1 and the camera connecting member 2 are snap-connected.
[0034] The lens barrel limiting member 1 includes a hollow first connection disk 11, a lens barrel 12 coaxially and fixedly arranged on one side of the first connection disk 11, and a first annular step 13 coaxially and fixedly arranged on the other side of the first connection disk 11. The lens barrel limiting member 1 penetrates along the central axis, and a second annular groove 15 is arranged on one side of the lens barrel limiting member 1 close to the first annular step 13. A third annular groove 16 is arranged adjacent to the second annular groove 15, and the inner diameter of the third annular groove 16 is larger than that of the second annular groove 15.
[0035] The camera connecting member 2 includes a hollow second connecting disk 21 and a second annular step 22 coaxially and fixedly arranged on one side of the second connecting disk 21. The camera connecting member 2 penetrates along the central axis, and a first annular groove 23 is arranged on one side of the camera connecting member 2 away from the second annular step 22. The second annular step 22 adopts the standard specification of the C-type interface and is provided with an external thread. Therefore, the second annular step 22 can be docked with the C-type female port of the camera.
[0036] The outer diameter of the first annular step 13 is slightly smaller than the inner diameter of the first annular groove 23, and the axial height of the first annular step 13 is slightly smaller than the axial depth of the first annular groove 23. Therefore, the first annular step 13 can be in clearance fit with the first annular groove 23. When the first annular groove 23 is buckled with the first annular step 13, the first connecting disk 11 is attached to the second connecting disk 21.
[0037] To achieve the fixation between the lens barrel limiting member 1 and the camera connecting member 2, a plurality of annular stepped holes 24 are arranged on the second connecting disk 21 along the circumferential direction. The annular stepped holes 24 are all located outside the second annular step 22, are integrally arc-shaped, and are all concentrically arranged with the second connecting disk 21; the circular ring angle of the annular stepped holes 24 is 5° - 110°; preferably, the sizes of the annular stepped holes 24 are the same and are evenly distributed along the circumferential direction of the second connecting disk 21. Correspondingly, fastening screw holes 14 are arranged on the first connecting disk 11 in one-to-one correspondence with the annular stepped holes 24. After the fastening screw 4 passes through the annular stepped hole 24, it can be screwed into the corresponding fastening screw hole 14, and the fastening of the first connecting disk 11 and the second connecting disk 21 can be achieved; at the same time, the annular stepped holes 24 are long arc-shaped, so the alignment angle between the lens barrel limiting member 1 and the camera connecting member 2 can be adjusted.
[0038] To achieve the adjustment of the concentricity between the lens barrel limiting member 1 and the camera connecting member 2, a plurality of adjusting screw holes 25 are arranged on the second connecting disk 21 along the radial direction. The adjusting screw holes 25 are also communicated with the first annular groove 23; at the same time, the adjusting screw holes 25 are all arranged between two annular stepped holes 24 to avoid interference. An adjusting screw 3 is arranged in the adjusting screw hole 25. When the lens barrel limiting member 1 and the camera connecting member 2 are buckled, the adjusting screw 3 can abut against the circumferential surface of the first annular step 13. After the lens barrel limiting member 1 and the camera connecting member 2 are preliminarily fixed by using the fastening screw 4, the concentricity of the lens barrel limiting member 1 and the camera connecting member 2 can be adjusted by adjusting the adjusting screw 3, and the concentricity correction of the lens and the camera can be realized. The adjustment range of the concentricity is related to the fit clearance between the first annular step 13 and the first annular groove 23.
[0039] As Figure 6As shown, the lens barrel stopper 1 can be directly set at the connecting end of the lens. The optical lens 5 of the lens is fixedly arranged in the lens barrel 12. A retaining ring 7 for pressing the optical lens 5 is arranged in the second annular groove 15, and a part of the retaining ring 7 can be clamped in the third annular groove 16 for fixation. At the same time, a sealing ring 6 is also pressed between the optical lens 5 and the retaining ring 7, and the sealing ring 6 is arranged in the third annular groove 16.
[0040] When the present utility model is in use, first, the camera connecting member 2 is screwed tightly onto the camera; then, the first connecting plate 11 and the second connecting plate 21 are fitted together, and the lens barrel stopper 1 and the camera connecting member 2 are preliminarily fixed by using the fastening screw 4; then, observe the camera imaging, adjust the alignment angle by rotating the lens barrel stopper 1, and adjust the concentricity by adjusting the screw 3 until the camera obtains a high-definition and symmetrical image; finally, screw the fastening screw 4 tightly to complete the fastening.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present utility model, as long as they do not depart from the spirit and scope of the technical solutions of the present utility model, shall be covered by the scope of the claims of the present utility model.
Claims
1. An adjustable lens C-type interface, characterized in that, It includes a lens barrel limiting member and a camera connecting member; The lens barrel limiting member includes a hollow first connecting disk and a first annular step coaxially and fixedly arranged on one side of the first connecting disk; the camera connecting member includes a hollow second connecting disk and a second annular step coaxially and fixedly arranged on one side of the second connecting disk, and the second annular step is used for connecting with the camera; The camera connecting member is provided with a first annular groove on the side far from the second annular step; when the first connecting disk is attached to the second connecting disk, the first annular step and the first annular groove are in clearance fit; A plurality of annular stepped holes are arranged along the circumferential direction on the second connecting disk, and fastening screw holes are arranged on the first connecting disk in one-to-one correspondence with the annular stepped holes; The second connecting disk is provided with a plurality of adjusting screw holes along the radial direction, and adjusting screws are arranged in the adjusting screw holes, and the adjusting screws are used to abut against the circumferential surface of the first annular step.
2. The adjustable lens C-type interface according to claim 1, wherein The second annular step is provided with an external thread with a C-type interface specification.
3. The adjustable lens C-type interface according to claim 1, characterized in that, A lens barrel is coaxially and fixedly arranged on the side of the first connecting disk far from the first annular step.
4. The adjustable lens C-type interface according to claim 3, characterized in that, The lens barrel limiting member is provided with a second annular groove on the side close to the first annular step, and a third annular groove is arranged adjacent to the second annular groove, and the inner diameter of the third annular groove is larger than the inner diameter of the second annular groove.
5. The adjustable lens C-type interface according to claim 4, characterized in that, An optical lens is arranged in the lens barrel, a retaining ring for pressing the optical lens is arranged in the second annular groove, and the retaining ring is also clamped with the third annular groove.
6. The adjustable lens C-type interface according to claim 5, characterized in that, A sealing ring is also pressed between the optical lens and the retaining ring.
7. The adjustable lens C-type interface according to claim 1, characterized in that, Fastening screws for threadedly connecting with the fastening screw holes are arranged in the annular stepped holes.
8. The adjustable lens C-type interface according to claim 1, characterized in that, The circular angle of the annular stepped holes is 5°-110°.
9. The adjustable lens C-type interface according to claim 1, wherein, The sizes of the annular stepped holes are the same and are evenly distributed along the circumferential direction of the second connecting disk.
10. The adjustable lens C-type interface according to claim 1, characterized in that, The annular stepped holes are all located outside the second annular step.