Anti-vibration device of aperture-adjustable lens
By designing an anti-vibration device in an adjustable aperture lens, the combination of the aperture handwheel and anti-vibration screws is used to solve the problem of aperture diameter changes after vibration, and the stability performance and anti-vibration effect of the lens are improved.
Patent Information
- Application Number
- CN202420741011.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-11
AI Technical Summary
After vibration, the existing adjustable aperture lenses have a loose aperture handwheel, resulting in a change in aperture diameter and poor vibration resistance.
An anti-vibration device including a lens barrel, an adjustable aperture and an aperture handwheel is designed. The adjustable aperture is rotated simultaneously through the aperture handwheel, and the anti-vibration screw is used to fix it with the combination of anti-vibration screw and anti-vibration screw holes to ensure the aperture handwheel. fastening improves vibration resistance.
It effectively solves the problem of aperture diameter changes, improves the stability of the adjustable aperture lens, and ensures the anti-vibration effect of the aperture value under different settings.
Smart Images
Figure CN222167300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical lenses, in particular to an anti-vibration device for an adjustable aperture lens. Background Art
[0002] The adjustable aperture is a device used to control how much light can pass through and then enter the photosensitive surface. It is commonly found in optical equipment such as cameras, microscopes, and laser testers. The original adjustable aperture was just a series of circular holes of different sizes arranged on a disk with a central axis. Different apertures were selected by rotating the disk to achieve the effect of controlling the aperture.
[0003] Currently, there is a demand for adjustable aperture in the field of optical lenses. If the demand for adjustable aperture of the lens is to be met, the vibration resistance of the lens itself will deteriorate. After multiple vibrations, the aperture diameter will change due to the looseness of the aperture handwheel. Utility Model Content
[0004] The utility model aims to provide an anti-vibration device for an adjustable aperture lens to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The invention discloses an anti-vibration device for an adjustable aperture lens, comprising a lens barrel, an adjustable aperture and an aperture hand wheel, wherein the adjustable aperture is installed in the lens barrel and is rotatably connected to the lens barrel, the aperture hand wheel is sleeved outside the lens barrel and is rotatably connected to the lens barrel, wherein the adjustable aperture is fixedly connected to an aperture opening and closing lever, an opening groove is provided in the lens barrel, an aperture guide rod screw hole is provided in the aperture hand wheel, an aperture guide rod screw is threadedly connected in the aperture guide rod screw hole, a groove body adapted to the aperture guide rod screw is provided in the aperture opening and closing lever, the aperture guide rod screw passes through the opening groove and extends into the groove body, an aperture hand wheel anti-vibration screw hole is provided in the aperture hand wheel, an anti-vibration screw is threadedly connected in the aperture hand wheel anti-vibration screw hole, wherein the lens barrel is provided with anti-vibration screw holes with different aperture values in the circumferential direction.
[0007] Preferably, the aperture opening and closing lever is arranged in an "L" shape, a limiting groove adapted to the aperture opening and closing lever is arranged inside the lens barrel, and one end of the aperture opening and closing lever close to the adjustable aperture is located inside the limiting groove and is slidably connected to the limiting groove.
[0008] Preferably, the number of the anti-vibration screw holes is three, namely, an F4 anti-vibration screw hole, an F5.6 anti-vibration screw hole and an F8 anti-vibration screw hole.
[0009] Preferably, the outside of the lens barrel is provided with F4 scale, F5.6 scale and F8 scale corresponding to the anti-vibration screw hole.
[0010] Preferably, the aperture hand wheel is engraved with an aperture hand wheel scale on the outside.
[0011] Preferably, an aperture handwheel adjustment screw hole is provided inside the aperture handwheel, and an aperture handwheel adjustment screw is threadedly connected to the aperture handwheel adjustment screw hole.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model drives the adjustable aperture to rotate synchronously through the aperture hand wheel, and fixes the aperture hand wheel through the cooperation of the anti-vibration screw and the anti-vibration screw hole, thereby solving the problem in the prior art that the aperture diameter of the adjustable aperture lens changes due to the looseness of the aperture hand wheel after vibration, and improving the stability performance of the adjustable aperture. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an exploded view of the overall structure in the embodiment of the utility model.
[0014] Figure 2 It is a cross-sectional view of the connection structure between the lens barrel and the aperture hand wheel in the embodiment of the utility model.
[0015] Figure 3 It is a schematic diagram of the connection structure between the lens barrel and the aperture hand wheel in the embodiment of the utility model.
[0016] Figure 4 It is a schematic diagram of the external structure of the lens barrel in the embodiment of the utility model.
[0017] Figure 5 It is a schematic diagram of the external structure of the aperture hand wheel in the embodiment of the utility model.
[0018] In the picture: 100-lens barrel, 200-adjustable aperture, 300-aperture handwheel, 400-anti-vibration screw, 500-aperture guide rod screw, 600-aperture adjustment screw, 111-F4 anti-vibration screw hole, 112-F5.6 anti-vibration screw hole, 113-F8 anti-vibration screw hole, 121-F4 scale, 122-F5.6 scale, 123-F8 scale, 211-aperture opening and closing lever, 311-aperture guide rod screw hole, 312-aperture handwheel adjustment screw hole, 313-aperture handwheel anti-vibration screw hole, 321-aperture handwheel scale. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0020] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0021] In one embodiment, see Figure 1-Figure 5The invention discloses an anti-vibration device for an adjustable aperture lens, comprising a lens barrel 100, an adjustable aperture 200 and an aperture hand wheel 300, wherein the adjustable aperture 200 is installed in the lens barrel 100 and is rotatably connected to the lens barrel 100, the aperture hand wheel 300 is sleeved outside the lens barrel 100 and is rotatably connected to the lens barrel 100, wherein the adjustable aperture 200 is fixedly connected to an aperture opening and closing lever 211, an opening groove is provided in the lens barrel 100, and an aperture guide rod screw hole 311 is provided in the aperture hand wheel 3 ... The aperture guide rod screw hole 311 is threadedly connected with an aperture guide rod screw 500, a slot body adapted to the aperture guide rod screw 500 is provided inside the aperture opening and closing lever 211, the aperture guide rod screw 500 passes through the opening slot and extends into the slot body, an aperture hand wheel anti-vibration screw hole 313 is provided inside the aperture hand wheel 300, an anti-vibration screw 400 is threadedly connected with the aperture hand wheel anti-vibration screw hole 313, wherein the lens barrel 100 is provided with anti-vibration screw holes of different aperture values in the circumferential direction;
[0022] When in use, the adjustable aperture 200 is installed in the lens barrel 100, the aperture hand wheel 300 is sleeved on the outside of the lens barrel 100, the aperture guide rod screw hole 311 is aligned with the slot body of the aperture opening and closing lever 211, the aperture guide rod screw 500 is threadedly connected with the aperture guide rod screw hole 311, and the aperture guide rod screw 500 passes through the inside of the opening slot and extends into the inside of the slot body, and the aperture hand wheel 300 drives the adjustable aperture through the aperture guide rod screw 500 and the aperture opening and closing lever 211. The aperture 200 rotates. When the adjustable aperture 200 is adjusted, the anti-vibration screw 400 passes through the aperture hand wheel anti-vibration screw hole 313 and is locked in the anti-vibration screw hole. The aperture hand wheel 300 is tightened by the anti-vibration screw 400, thereby tightening the adjustable aperture 200 and improving the anti-vibration performance of the adjustable aperture 200. There are three anti-vibration screw holes, namely, the F4 anti-vibration screw hole 111, the F5.6 anti-vibration screw hole 112 and the F8 anti-vibration screw hole 113. The lens barrel 100 has an F4 scale 121, an F5.6 scale 122 and an F8 scale 123 on the outside corresponding to the anti-vibration screw hole. The aperture hand wheel 300 has an aperture hand wheel scale 321 engraved on the outside. To achieve anti-vibration of the lens at an aperture value of F4, the aperture hand wheel scale 321 is aligned with the F4 scale 121, and then the anti-vibration screw 400 is passed through the aperture hand wheel anti-vibration screw hole 313 and locked in the F4 anti-vibration screw hole 111, so that the lens is at F4. 4 For anti-vibration of the lens at an aperture value of F5.6, to achieve anti-vibration of the lens at an aperture value of F5.6, loosen the anti-vibration screw 400, turn the aperture hand wheel 300, align the aperture hand wheel scale 321 with the F5.6 scale 122, and then tighten the anti-vibration screw 400. To achieve anti-vibration of the lens at an aperture value of F8, loosen the anti-vibration screw 400, turn the aperture hand wheel 300, align the aperture hand wheel scale 321 with the F8 scale 123, and then tighten the anti-vibration screw 400.
[0023] In one embodiment, see Figure 1The aperture opening and closing lever 211 is arranged in an "L" shape, and a limiting groove adapted to the aperture opening and closing lever 211 is arranged inside the lens barrel 100. One end of the aperture opening and closing lever 211 close to the adjustable aperture 200 is located inside the limiting groove and is slidably connected to the limiting groove; the limiting groove can play a limiting role on the "L"-shaped aperture opening and closing lever 211, thereby effectively improving the stability of the aperture opening and closing lever 211 during rotation.
[0024] In one embodiment, see Figure 1 and Figure 5 An aperture handwheel adjusting screw hole 312 is provided inside the aperture handwheel 300 , and the aperture handwheel adjusting screw hole 312 is threadedly connected with the aperture handwheel 300 adjusting screw. The aperture adjusting screw 600 can achieve the purpose of pre-locking the adjustable aperture 200 through the aperture handwheel adjusting screw hole 312 .
[0025] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An anti-vibration device for an adjustable aperture lens, comprising a lens barrel, an adjustable aperture and an aperture hand wheel; characterized in that: The adjustable aperture is installed in the lens barrel and is rotatably connected to the lens barrel, the aperture handwheel is sleeved on the outside of the lens barrel and is rotatably connected to the lens barrel, wherein the adjustable aperture is fixedly connected to the aperture opening and closing lever, an opening groove is provided in the lens barrel, an aperture guide rod screw hole is provided in the aperture handwheel, the aperture guide rod screw hole is threadedly connected to the aperture guide rod screw, a groove body adapted to the aperture guide rod screw is provided in the aperture opening and closing lever, the aperture guide rod screw passes through the opening groove and extends into the groove body, an aperture handwheel anti-vibration screw hole is provided in the aperture handwheel, the aperture handwheel anti-vibration screw hole is threadedly connected to the anti-vibration screw, wherein the lens barrel is provided with anti-vibration screw holes with different aperture values in the circumferential direction.
2. The anti-vibration device of an adjustable aperture lens according to claim 1, characterized in that: The aperture opening and closing lever is arranged in an "L" shape, and a limiting groove adapted to the aperture opening and closing lever is arranged inside the lens barrel, and one end of the aperture opening and closing lever close to the adjustable aperture is located inside the limiting groove and is slidably connected to the limiting groove.
3. The anti-vibration device of an adjustable aperture lens according to claim 1, characterized in that: There are three anti-vibration screw holes, namely, an F4 anti-vibration screw hole, an F5.6 anti-vibration screw hole and an F8 anti-vibration screw hole.
4. The anti-vibration device of an adjustable aperture lens according to claim 3, characterized in that: The outside of the lens barrel is provided with F4 scale, F5.6 scale and F8 scale corresponding to the anti-vibration screw hole.
5. The anti-vibration device of an adjustable aperture lens according to claim 4, characterized in that: The aperture hand wheel is engraved with an aperture hand wheel scale on the outside.
6. The anti-vibration device of an adjustable aperture lens according to any one of claims 1 to 5, characterized in that: An aperture handwheel adjusting screw hole is arranged inside the aperture handwheel, and an aperture handwheel adjusting screw is threadedly connected to the aperture handwheel adjusting screw hole.