Optical lens with anti-reflection structure
By coating the magnesium fluoride layer on the surface of the optical lens and achieving automatic focus using driving gears and motor-driven threaded sleeves, the complex structure and reflection problems of existing optical lenses are solved, and the focus accuracy and light utilization are improved.
Patent Information
- Application Number
- CN202420771996.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The existing optical lenses have complex motion conversion structures, which affect the accuracy of focus, and lack of reflective structures, resulting in light reflection and reducing light utilization.
An optical lens with an anti-reflective structure is designed, and a relative sliding is achieved by coating a layer of magnesium fluoride on the surface of the first optical lens and driving the threaded sleeve with a driving gear and a driving motor are used to achieve automatic focus and reduce reflection and halo.
The focus structure is simplified, the focus accuracy is improved, the reflection of light at the lens interface is reduced, and the light utilization rate is improved.
Smart Images
Figure CN222299869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical lenses, in particular to an optical lens with an anti-reflection structure. Background Art
[0002] A lens is an optical element made of transparent material (such as glass, crystal, etc.). Convex lens: thick in the middle and thin at the edges, there are three types: biconvex, plano-convex, and concave-convex; concave lens: thin in the middle and thick at the edges, there are three types: biconcave, plano-concave, and convex-concave.
[0003] Chinese patent announcement number CN217543501U discloses a movable focusing optical lens assembly, including a shell, an inner shell is arranged inside the shell, a telescopic tube assembly is arranged at one end of the inner shell, and the telescopic tube assembly includes a rotating joint and a sliding joint, the rotating joint and the sliding joint are slidably connected, and a tooth groove is provided on the outside of the rotating joint, the rotating joint is rotatably connected to one side of the shell through a bearing, the inner wall of the sliding joint is fixedly connected to the inner shell, a threaded tube is arranged inside the sliding joint at one end of the shell, the inner wall of the sliding joint is threadedly connected to the outside of the threaded tube, a first connecting ring is fixedly connected to one end of the shell above the telescopic tube assembly, an arc rod is fixedly connected to the top of the first connecting ring, and a second connecting ring is fixedly connected to one end of the arc rod, and a nut is rotatably connected between the first connecting ring and the second connecting ring through a bearing.
[0004] However, the inventors of the above device believe that there are certain defects. The motion conversion structure of the above device is complicated and cumbersome, which affects the focusing accuracy. In addition, the lens lacks a reflective structure, and part of the light will be reflected back in the optical lens, resulting in low light utilization. For this reason, we provide an optical lens with an anti-reflective structure to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide an optical lens with an anti-reflection structure to achieve automatic focusing, and with fewer conversion structures, the error is smaller. By setting a magnesium fluoride coating on the surface of the first optical lens, the reflection of the incident light at the lens interface can be reduced, thereby reducing halo.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an optical lens with an anti-reflection structure, comprising an outer shell and a lens barrel installed inside the outer shell, a first optical lens is installed at one end of the lens barrel, the outer surface of the light-emitting surface of the first optical lens is coated with a magnesium fluoride coating, a threaded sleeve is rotatably connected inside the outer shell, the lens barrel is provided with an external thread, the lens barrel is threadedly connected to the inside of the threaded sleeve through the external thread, a driving mechanism for driving the threaded sleeve to rotate is provided inside the outer shell, a rubber sleeve is fixedly connected to the outer shell, and a second optical lens and a third optical lens are fixedly connected inside the lens barrel.
[0007] Furthermore, the driving mechanism includes a driving gear rotating inside the outer shell, and the threaded sleeve is fixedly connected to a connecting gear, the driving gear meshes with the connecting gear, and the driving gear is driven to rotate, and the threaded sleeve is driven to rotate inside the outer shell under the meshing action of the driving gear and the connecting gear.
[0008] Furthermore, a driving motor is fixedly connected to the interior of the outer shell, and an output shaft end of the driving motor is fixedly connected to the driving gear, and the driving gear is driven to rotate by starting the driving motor.
[0009] Furthermore, a groove is provided at one end of the outer shell, and a connecting strip is fixedly connected to the lens barrel, and the connecting strip is slidably connected to the inside of the groove. Through the setting of the connecting strip and the groove, the lens barrel can slide stably inside the outer shell and play a limiting role.
[0010] Furthermore, the connecting strip is threadedly connected with a mounting bolt, and the first optical lens is detachably connected to one end of the lens barrel via the mounting bolt. By removing the mounting bolt on the connecting strip, the first optical lens can be easily removed from one end of the lens barrel.
[0011] Furthermore, a fixing seat is fixedly connected to the interior of the outer shell, and the threaded sleeve is rotatably connected to the interior of the fixing seat, and the threaded sleeve is supported to rotate by the provided fixing seat.
[0012] Furthermore, a side baffle is installed at the other end of the outer shell, and a light-transmitting sheet is inlaid on the side baffle. The side baffle is used to shield one end of the outer shell, and the light-transmitting sheet is used to transmit light.
[0013] Furthermore, a threaded joint is fixedly connected to one side of the side cover, and the threaded joint is threadedly connected to the other end of the outer shell. The threaded joint is provided to facilitate removing the side cover from one end of the outer shell to open the other end of the outer shell.
[0014] Compared with the prior art, the optical lens with anti-reflection structure has the following beneficial effects:
[0015] 1. The utility model controls the relative sliding of the lens barrel inside the outer shell through a driving mechanism to complete automatic focusing, and has fewer conversion structures, which makes the error smaller. By setting a magnesium fluoride coating on the surface of the first optical lens, the reflection of the incident light at the lens interface can be reduced, thereby reducing halo.
[0016] 2. The utility model starts a driving motor to drive the driving gear to rotate, and drives the threaded sleeve to rotate under the meshing action of the driving gear and the connecting gear. Under the action of the external thread, the lens barrel slides relatively inside the outer shell, and the rotation of the lens barrel is limited by the provided connecting strips and grooves, so that the lens barrel can slide stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a cutaway perspective view of the outer shell of the utility model;
[0018] Figure 2 This is a cutaway stereoscopic view of the lens barrel of the utility model;
[0019] Figure 3 This is a three-dimensional diagram of the lens barrel structure of the utility model;
[0020] Figure 4 It is a three-dimensional diagram of the utility model;
[0021] Figure 5 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.
[0022] In the figure: 1. outer shell; 11. rubber sleeve; 2. lens barrel; 21. external thread; 22. connecting strip; 23. mounting bolt; 3. threaded sleeve; 31. fixing seat; 4. connecting gear; 5. driving gear; 51. driving motor; 6. first optical lens; 61. magnesium fluoride coating; 7. side cover; 71. light-transmitting sheet; 72. threaded joint; 8. second optical lens; 9. third optical lens. DETAILED DESCRIPTION
[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0024] As described in the background technology, the motion conversion structure of the existing equipment is complicated and cumbersome, which affects the focusing accuracy, and the lens lacks a reflective structure, so part of the light will be reflected back in the optical lens, resulting in low light utilization. For this reason, this embodiment provides an optical lens with an anti-reflective structure. The device completes automatic focusing and has fewer conversion structures, making the error smaller. By setting a magnesium fluoride coating on the surface of the first optical lens, the reflection of the incident light at the lens interface can be reduced, thereby reducing halo.
[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The present embodiment proposes an optical lens with an anti-reflection structure, including an outer shell 1 and a lens barrel 2 installed inside the outer shell 1, a first optical lens 6 is installed at one end of the lens barrel 2, and the outer surface of the light-emitting surface of the first optical lens 6 is coated with a magnesium fluoride coating 61. By setting the magnesium fluoride coating 61 on the surface of the first optical lens 6, the reflection of the lens interface to the incident light can be reduced, and the halo can be reduced. The inside of the lens barrel 2 is fixedly connected with a second optical lens 8 and a third optical lens 9, the inside of the outer shell 1 is rotatably connected with a threaded sleeve 3, the inside of the outer shell 1 is fixedly connected with a fixing seat 31, the threaded sleeve 3 is rotatably connected to the inside of the fixing seat 31, and the threaded sleeve 3 is supported by the fixed seat 31, an external thread 21 is provided on the lens barrel 2, the lens barrel 2 is threadedly connected to the inside of the threaded sleeve 3 through the external thread 21, and the lens barrel 2 is slid by rotating the threaded sleeve 3 under the action of the external thread 21 to focus.
[0026] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 5 A driving mechanism for driving the threaded sleeve 3 to rotate is provided inside the outer shell 1, and the driving mechanism includes a driving gear 5 rotating inside the outer shell 1, a connecting gear 4 is fixedly connected to the threaded sleeve 3, and the driving gear 5 meshes with the connecting gear 4. A driving motor 51 is fixedly connected inside the outer shell 1, and the output shaft end of the driving motor 51 is fixedly connected to the driving gear 5. The driving motor 51 is started to drive the driving gear 5 to rotate, and the threaded sleeve 3 is driven to rotate under the meshing action of the connecting gear 4 and the driving gear 5 to perform the focusing operation.
[0027] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 4 A groove is provided at one end of the outer shell 1, and a connecting strip 22 is fixedly connected to the lens barrel 2. The connecting strip 22 is slidably connected to the inside of the groove. Through the action of the arranged connecting strip 22 and the groove, the lens barrel 2 can be stably slid inside the outer shell 1 and limit the lens barrel 2. A mounting bolt 23 is threadedly connected to the connecting strip 22. The first optical lens 6 is detachably connected to one end of the lens barrel 2 through the mounting bolt 23. By removing the mounting bolt 23 on the connecting strip 22, one end of the first optical lens 6 can be taken out for maintenance.
[0028] Please refer again Figure 1 , Figure 2 and Figure 4A rubber sleeve 11 is fixedly connected to the outer shell 1, and the rubber sleeve 11 is arranged to facilitate holding and prevent it from sliding. A side cover 7 is installed at the other end of the outer shell 1, and a light-transmitting sheet 71 is inlaid on the side cover 7. A threaded joint 72 is fixedly connected to one side of the side cover 7. The threaded joint 72 is threadedly connected to the other end of the outer shell 1. The side cover 7 is arranged to shield one end of the outer shell 1, and light is transmitted under the action of the light-transmitting sheet 71. The side cover 7 is removed from one end of the outer shell 1 by rotating the side cover 7 under the action of the threaded joint 72.
[0029] Working principle: Start the driving motor 51 to drive the driving gear 5 to rotate, and the threaded sleeve 3 is driven to rotate under the meshing action of the connecting gear 4 and the driving gear 5. Under the action of the external thread 21, the lens barrel 2 slides relative to the outer shell 1 inside the outer shell 1 to complete the focusing. Through the action of the set connecting strip 22 and the groove, the lens barrel 2 can be stably slid inside the outer shell 1. The magnesium fluoride coating 61 set on the surface of the first optical lens 6 can reduce the reflection of the incident light at the lens interface and reduce the halo. The side cover 7 is used to block one end of the outer shell 1, and light is transmitted through the light-transmitting sheet 71. The side cover 7 is removed from one end of the outer shell 1 under the action of the threaded joint 72 by rotating the side cover 7.
Claims
1. An optical lens with an anti-reflection structure, comprising an outer shell (1) and a lens barrel (2) installed inside the outer shell (1), characterized in that: A first optical lens (6) is mounted on one end of the lens barrel (2); the outer surface of the light-emitting surface of the first optical lens (6) is coated with a magnesium fluoride coating (61); a threaded sleeve (3) is rotatably connected to the interior of the outer shell (1); an external thread (21) is provided on the lens barrel (2); the lens barrel (2) is threadedly connected to the interior of the threaded sleeve (3) via the external thread (21); a driving mechanism for driving the threaded sleeve (3) to rotate is provided inside the outer shell (1); a rubber sleeve (11) is fixedly connected to the outer shell (1); and a second optical lens (8) and a third optical lens (9) are fixedly connected to the interior of the lens barrel (2).
2. The optical lens with an anti-reflection structure according to claim 1, characterized in that: The driving mechanism comprises a driving gear (5) rotating inside the outer shell (1); a connecting gear (4) is fixedly connected to the threaded sleeve (3); and the driving gear (5) is meshed with the connecting gear (4).
3. The optical lens with an anti-reflection structure according to claim 2, characterized in that: A driving motor (51) is fixedly connected to the interior of the outer shell (1), and an output shaft end of the driving motor (51) is fixedly connected to the driving gear (5).
4. The optical lens with an anti-reflection structure according to claim 1, characterized in that: A groove is formed at one end of the outer shell (1), a connecting strip (22) is fixedly connected to the lens barrel (2), and the connecting strip (22) is slidably connected inside the groove.
5. The optical lens with an anti-reflection structure according to claim 4, characterized in that: A mounting bolt (23) is threadedly connected to the connecting strip (22), and the first optical lens (6) is detachably connected to one end of the lens barrel (2) via the mounting bolt (23).
6. The optical lens with an anti-reflection structure according to claim 1, characterized in that: A fixing seat (31) is fixedly connected inside the outer shell (1), and the threaded sleeve (3) is rotatably connected inside the fixing seat (31).
7. The optical lens with an anti-reflection structure according to claim 1, characterized in that: A side baffle (7) is installed at the other end of the outer shell (1), and a light-transmitting sheet (71) is inlaid on the side baffle (7).
8. The optical lens with an anti-reflection structure according to claim 7, characterized in that: A threaded joint (72) is fixedly connected to one side of the side baffle cover (7), and the threaded joint (72) is threadedly connected to the other end of the outer shell (1).