Optical lens mounting base

Abstract

The utility model relates to an optical lens installation base which comprises an installation support which is of a rectangular structure, an annular groove is formed in the middle of the installation support, a lens fixing frame is arranged at the lower end of the installation support, adjusting pieces are evenly installed on the installation support, the number of the adjusting pieces is three, and the lens fixing frame is installed at the lower ends of the adjusting pieces. A sealing piece is installed at the interval between the installation support and the lens fixing frame, an optical lens is fixedly installed in the middle of the lens fixing frame, and a pressing piece is installed in the middle of the annular groove and used for pressing and fixing the upper end of the optical lens. According to the utility model, through differentiated advancing and retreating of the three groups of adjusting pieces, pitching, yawing and axial translation of the optical lens can be independently controlled, optical axis offset, coma and astigmatism are corrected, the adjusting precision is high, and the high-precision scene requirements of laser processing, microscopic imaging and the like are met.

Description

Technical Field

[0001] This application relates to the field of optical instrument technology, and in particular to an optical lens mounting base. Background Technology

[0002] In optical systems, the mounting accuracy and stability of optical lenses directly determine image quality, optical path efficiency, and system reliability. Traditional optical lens mounting bases often employ rigid fixing or simple adjustment structures, which present the following technical bottlenecks:

[0003] Insufficient adjustment capability: Most bases only support adjustment of a single degree of freedom (such as axial translation), which makes it difficult to correct the optical axis offset of the lens caused by machining tolerances or assembly deviations. Secondary calibration is required by a complex six-axis adjustment stage, which is costly and cumbersome to operate.

[0004] Weak sealing performance: Open structures or static sealing designs are susceptible to intrusion of environmental dust and moisture, leading to contamination of the lens surface and deterioration of the coating. In particular, long-term stability is difficult to guarantee in industrial inspection, medical endoscopy or outdoor equipment.

[0005] Poor dynamic stability: In environments with vibration, temperature fluctuations, etc., conventional bases lack anti-interference design and are prone to optical path drift due to mechanical loosening or thermal deformation, which affects high-precision applications (such as laser processing and space optics).

[0006] To address the aforementioned problems, this invention proposes an optical lens mounting base to meet the precision usage requirements of optical lens mounting bases. Utility Model Content

[0007] In order to solve the problems existing in the background art, this utility model proposes an optical lens mounting base.

[0008] The optical lens mounting base provided in this application adopts the following technical solution:

[0009] An optical lens mounting base includes a mounting bracket with a rectangular structure. An annular groove is provided in the middle of the mounting bracket, and a lens fixing frame is provided at the lower end of the mounting bracket. Three sets of adjusting components are evenly installed on the mounting bracket. The lens fixing frame is installed at the lower end of the adjusting components. A sealing element is installed at the gap between the mounting bracket and the lens fixing frame. An optical lens is fixedly installed in the middle of the lens fixing frame, and a clamping element is installed in the middle of the annular groove to clamp and fix the upper end of the optical lens.

[0010] Furthermore, the lens holder has a rectangular structure, and an annular support is provided in the middle of the lens holder. The optical lens is installed on the upper end of the annular support. The annular support has evenly arranged slots, and the slots are equipped with latches. The latches are used to press and fix the optical lens on the annular support.

[0011] Furthermore, the latch has a rectangular structure, and the lower end of the latch is provided with a plug rod that mates with the socket. The plug rod is evenly distributed with anti-slip textures, and the inner side of the latch is provided with an inclined protrusion that mates with the surface of the optical lens. The inner side of the inclined protrusion is made of flexible rubber material.

[0012] Furthermore, the upper end of the lens holder is evenly arranged with positioning rods, which are cylindrical hollow structures. The mounting bracket is provided with countersunk holes that cooperate with the positioning rods. A sealing ring that cooperates with the positioning rods is provided on the inner wall of the lower end of the countersunk holes. The upper end of the countersunk holes has the same diameter as the middle part of the positioning rods.

[0013] Furthermore, the adjusting component includes an adjusting screw, a threaded sleeve, and a compression spring. The mounting bracket has through holes evenly spaced, and a threaded sleeve is fixedly installed in the through holes. The adjusting screw is connected to the inside of the threaded sleeve by a threaded connection. The lower end of the adjusting screw is connected to the lens holder through a bearing. Compression springs are evenly arranged between the lens holder and the mounting bracket.

[0014] Furthermore, the sealing element is made of flexible rubber, is deformable, and has circular holes corresponding to the adjusting screw and the compression spring.

[0015] Furthermore, the clamping component includes an annular frame, a push rod, sealing rubber, and a clamping ring. The annular frame is installed inside the annular groove. Telescopic holes are evenly arranged at the lower end of the annular frame. A push rod is slidably arranged in the telescopic holes. A clamping ring is installed between the lower ends of the push rod. Sealing rubber is installed in the gap between the upper end of the clamping ring and the annular frame.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention provides an optical lens mounting base, which has the following advantages:

[0018] 1. This utility model, through the differentiated advance and retreat of three sets of adjustment components, can independently control the pitch, yaw and axial translation of the optical lens, correct optical axis offset, coma and astigmatism, and has high adjustment accuracy, meeting the needs of high-precision scenarios such as laser processing and microscopic imaging.

[0019] 2. In this utility model, the flexible rubber seal and the sliding seal ring of the positioning rod form a two-stage dynamic seal, which adapts to deformation during adjustment, effectively isolating dust, water vapor and chemical pollutants, and extending the life of the optical lens coating.

[0020] 3. In this utility model, the vertical pressure of the clamping component and the guide structure of the top rod prevent lateral deformation, so that the lower end face of the clamping ring can always be attached to the optical lens, avoiding the phenomenon of gaps between the clamping ring and the optical lens due to deformation, thereby improving the environmental adaptability, reliability and life of the optical system. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a three-dimensional structural diagram of this application.

[0023] Figure 2 This is a schematic diagram of the first cross-sectional structure of this application.

[0024] Figure 3 This is a cross-sectional structural diagram of the present application.

[0025] Figure 4 This is a cross-sectional structural diagram of this application.

[0026] Figure 5 This is a three-dimensional structural diagram of the lens holder and the optical lens in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Lens fixing bracket; 21. Annular support bracket; 22. Locking buckle; 23. Inclined protrusion; 24. Positioning rod; 3. Adjusting component; 31. Adjusting screw; 32. Threaded sleeve; 33. Compression spring; 4. Sealing component; 5. Optical lens; 6. Compression component; 61. Annular frame; 62. Top rod; 63. Sealing rubber; 64. Compression ring. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5An optical lens mounting base provided in this embodiment of the present invention includes a mounting bracket 1, which has a rectangular structure and an annular groove in the middle. A lens fixing frame 2 is provided at the lower end of the mounting bracket 1. Adjusting members 3 are evenly installed on the mounting bracket 1, and there are three sets of adjusting members 3. The lens fixing frame 2 is installed at the lower end of the adjusting members 3. A sealing member 4 is installed at the gap between the mounting bracket 1 and the lens fixing frame 2. An optical lens 5 is fixedly installed in the middle of the lens fixing frame 2. A clamping member 6 is installed in the middle of the annular groove. The clamping member 6 is used to clamp and fix the upper end of the optical lens 5 so that the gap between the optical lens 5 and the lens fixing frame 2 is always in a sealed state.

[0030] In the above technical solution, the optical lens 5 is installed in the middle of the upper end of the lens holder 2. The optical axis of the optical lens 5 may deviate from the system reference axis due to processing tolerances or assembly deviations. The tilt angle is finely adjusted by the three adjustment components 3 to make the optical axis coincide with the system optical axis. Moreover, the angle between the optical lens 5 and the optical axis can be changed by the differential advance and retreat of the three adjustment components 3 to correct the optical path offset or aberration and meet the subsequent use requirements.

[0031] See Figures 1-5 As shown, in this preferred embodiment, the lens holder 2 has a rectangular structure, and an annular support frame 21 is provided in the middle of the lens holder 2. The optical lens 5 is installed on the upper end of the annular support frame 21. The annular support frame 21 has evenly arranged slots, and a latch 22 is installed on the slot. The latch 22 is used to press and fix the optical lens 5 on the annular support frame 21.

[0032] In the above technical solution, when installing the optical lens 5, the optical lens 5 is placed in the middle of the upper end of the annular support 21, and the optical lens 5 is pressed and fixed by multiple latches 22. The latches 22 can lock and fix the optical lens 5. At the same time, since the latches 22 are evenly arranged around the outer perimeter of the optical lens 5, the optical lens 5 after being locked and fixed can maintain coaxiality with the annular support 21, thereby ensuring the accuracy of the optical lens 5 after installation, reducing installation errors, and reducing the cumbersome operation of subsequent calibration.

[0033] See Figure 5 As shown, as a preferred technical solution in this embodiment, the latch 22 has a rectangular structure. The lower end of the latch 22 is provided with a plug rod that cooperates with the socket. Anti-slip textures are evenly arranged on the plug rod. The inner side of the latch 22 is provided with an inclined protrusion 23 that cooperates with the surface of the optical lens 5. The inner side of the inclined protrusion 23 is made of flexible rubber.

[0034] In the above technical solution, when it is necessary to fix the optical lens 5, the plug at the lower end of the latch 22 is inserted into the socket, so that the inclined protrusion 23 at the upper end of the latch 22 can press tightly against the surface of the optical lens 5. The flexible rubber on the inner side of the inclined protrusion 23 can further improve the tightness of the connection and ensure that the optical lens 5 can be in a stable state after it is fixed.

[0035] See Figures 3-5 As shown, in this preferred embodiment, the upper end of the lens holder 2 is evenly provided with positioning rods 24. The positioning rods 24 are cylindrical hollow structures. The mounting bracket 1 is provided with countersunk holes that cooperate with the positioning rods 24. A sealing ring that cooperates with the positioning rods 24 is provided on the inner wall of the lower end of the countersunk hole. The upper end of the countersunk hole has the same diameter as the middle part of the positioning rods 24.

[0036] In the above technical solution, the insertion and engagement between the positioning rod 24 and the countersunk hole allows the mounting bracket 1 and the lens holder 2 to be accurately engaged. At the same time, the sealing ring on the inner wall of the countersunk hole engages with the outer wall of the positioning rod 24, thus ensuring an accurate sealing engagement between the positioning rod 24 and the countersunk hole when the lens holder 2 is adjusted up and down. This ensures that the gap between the optical lens 5 and the mounting bracket 1 and the lens holder 2 is always sealed, reducing the entry of dust, particulate matter, or biological contaminants (such as mold spores) and preventing them from adhering to the surface of the optical lens 5, which could lead to scattering, light energy loss, or blurred imaging.

[0037] See Figures 3-5 As shown, in this preferred embodiment, the adjusting component 3 includes an adjusting screw 31, a threaded sleeve 32, and a compression spring 33. The mounting bracket 1 has through holes evenly spaced, and the threaded sleeve 32 is fixedly installed in the through holes. The adjusting screw 31 is connected to the inside of the threaded sleeve 32 by a threaded connection. The lower end of the adjusting screw 31 is connected to the lens mounting bracket 2 through a bearing. The compression spring 33 is evenly arranged between the lens mounting bracket 2 and the mounting bracket 1.

[0038] In the above technical solution, by rotating the adjusting screw 31, the tilt angle of the lens holder 2 can be adjusted, so that the optical axis of the optical lens 5 in the middle of the lens holder 2 can coincide with the optical axis of the system; at the same time, the angle of the optical lens 5 can be adjusted by adjusting the adjusting screw 31, thereby controlling the ellipticity and divergence angle of the laser beam; when the three adjusting screws 31 are adjusted at equal intervals, the height of the optical lens 5 can be adjusted, so that in the field of laser cutting, the focal point of the laser can be accurately placed on the surface of the workpiece, thereby improving the accuracy of workpiece cutting.

[0039] See Figure 5As shown, in this preferred embodiment, the sealing element 4 is made of flexible rubber and is deformable. The sealing element 4 is provided with round holes corresponding to the adjusting screw 31 and the compression spring 33.

[0040] In the above technical solution, the upper and lower ends of the sealing element 4 are tightly connected to the mounting bracket 1 and the lens fixing frame 2, which can be connected by adhesive bonding. Thus, when the lens fixing frame 2 moves up and down or adjusts its angle, the gap between the mounting bracket 1 and the lens fixing frame 2 is always sealed.

[0041] The seal 4 fills the gap and buffers vibration, and the preload of the compression spring 33 compensates for the difference in thermal expansion, ensuring sealing reliability and reducing vibration.

[0042] See Figures 3-4 As shown, in this preferred embodiment, the clamping member 6 includes an annular frame 61, a push rod 62, a sealing rubber 63, and a clamping ring 64. The annular frame 61 is installed inside the annular groove. The lower end of the annular frame 61 has evenly arranged telescopic holes. The push rod 62 is slidably arranged in the telescopic holes. The clamping ring 64 is installed between the lower ends of the push rod 62. The sealing rubber 63 is installed in the gap between the upper end of the clamping ring 64 and the annular frame 61.

[0043] In the above technical solution, when the optical lens 5 is installed, the upward movement of the optical lens 5 can make it fit tightly against the lower end of the clamping ring 64. The clamping ring 64 can clamp and fix the upper outer side of the optical lens 5, thereby further improving the stability of the optical lens 5 after installation. At the same time, the push rod 62 can further enhance the clamping force of the clamping ring 64, so that the clamping ring 64 can only be offset in the vertical direction. This ensures that the lower end face of the clamping ring 64 can always be attached to the optical lens 5, avoiding deformation of the clamping ring 64 that could cause gaps between it and the optical lens 5. This can improve the environmental adaptability, reliability and lifespan of the optical system.

[0044] The working principle of this utility model is as follows:

[0045] S1: Optical lens pre-installation and coaxial fixation

[0046] The optical lens 5 is placed in the middle of the upper part of the annular support 21 of the lens holder 2 and is pressed and fixed by the evenly distributed buckles 22; the plug at the lower end of the buckle 22 is inserted into the socket of the annular support 21, and the inclined protrusion 23 of the flexible rubber material on its inner side is in close contact with the surface of the optical lens 5; by using the multi-point symmetrical locking principle, the optical lens 5 and the annular support 21 are ensured to be coaxial, eliminating assembly eccentricity error and providing a reference for subsequent optical axis calibration.

[0047] S2: Multi-degree-of-freedom precision adjustment and optical axis calibration

[0048] The lens holder 2 is adjusted in multiple degrees of freedom using three sets of adjusting components 3:

[0049] Tilting angle adjustment: The differential rotating adjustment screw 31 drives the lens mounting bracket 2 to tilt or yaw around the bearing fulcrum, correcting the deviation between the optical axis of the optical lens 5 and the system reference axis.

[0050] Axial height adjustment: Simultaneously rotate three sets of adjusting screws 31 to compress or release the clamping spring 33, thereby realizing the Z-axis translation of the lens holder 2 and adjusting the axial position of the optical lens 5 (such as the focusing distance).

[0051] This process combines feedback from a laser interferometer or spot analyzer to iteratively optimize until the optical axis coincides and aberrations are minimized.

[0052] S3: Dynamic seal maintenance and anti-interference protection

[0053] During adjustment, the flexible rubber seal 4 undergoes elastic deformation as the lens holder 2 shifts, consistently filling the gap between the mounting bracket 1 and the lens holder 2. The positioning rod 24 and the sealing ring inside the countersunk hole of the mounting bracket 1 form a sliding sealing interface, preventing dust and moisture from intruding into the surface of the optical lens 5; the dual-stage sealing design (static sealing ring + dynamic flexible seal) ensures effective environmental isolation during vibration, temperature changes, or angle adjustments.

[0054] S4: Compression Locking and Long-Term Stability Guarantee

[0055] After adjustment, the clamping component 6 is finally fixed. The upper end of the optical lens 5 is evenly pressed by the clamping ring 64, and the top rod 62 moves vertically along the telescopic hole of the ring frame 61 to avoid lateral deformation and ensure that the clamping force is applied vertically to the edge of the optical lens 5. The sealing rubber 63 forms a redundant sealing layer between the clamping ring 64 and the ring frame 61 to prevent external contaminants from seeping in from the top.

[0056] During this stage, the spatial orientation of the optical lens 5 is locked. Combined with the self-locking characteristics of the thread of the adjusting component 3 and the preload of the compression spring 33, it resists the micro-displacement caused by mechanical vibration or thermal expansion and maintains long-term optical path stability.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An optical lens mounting base characterized by, include: Mounting bracket (1) has a rectangular structure. An annular groove is provided in the middle of the mounting bracket (1). A lens fixing bracket (2) is provided at the lower end of the mounting bracket (1). Adjusting components (3) are evenly installed on the mounting bracket (1). There are three sets of adjusting components (3). The lens fixing bracket (2) is installed at the lower end of the adjusting component (3). A sealing component (4) is installed at the gap between the mounting bracket (1) and the lens fixing bracket (2). An optical lens (5) is fixedly installed in the middle of the lens fixing bracket (2). A clamping component (6) is installed in the middle of the annular groove. The clamping component (6) is used to clamp and fix the upper end of the optical lens (5) so that the gap between the optical lens (5) between the mounting bracket (1) and the lens fixing bracket (2) is always sealed.

2. An optical lens mounting base according to claim 1, characterized in that: The lens holder (2) has a rectangular structure. A ring support (21) is provided in the middle of the lens holder (2). The optical lens (5) is installed on the upper end of the ring support (21). The ring support (21) has evenly arranged slots. A latch (22) is installed on the slot. The latch (22) is used to press and fix the optical lens (5) on the ring support (21).

3. An optical lens mounting base according to claim 2, characterized in that: The latch (22) has a rectangular structure. The lower end of the latch (22) is provided with a plug rod that cooperates with the socket. Anti-slip textures are evenly arranged on the plug rod. The inner side of the latch (22) is provided with an inclined protrusion (23) that cooperates with the surface of the optical lens (5). The inner side of the inclined protrusion (23) is made of flexible rubber.

4. An optical lens mounting base according to claim 3, characterized in that: The upper end of the lens holder (2) is evenly arranged with positioning rods (24). The positioning rods (24) are cylindrical hollow structures. The mounting bracket (1) is provided with countersunk holes that cooperate with the positioning rods (24). The inner wall of the lower end of the countersunk hole is provided with a sealing ring that cooperates with the positioning rods (24). The upper end of the countersunk hole has the same diameter as the middle part of the positioning rods (24).

5. An optical lens mounting base according to claim 1, characterized in that: The adjusting component (3) includes an adjusting screw (31), a threaded sleeve (32), and a compression spring (33). The mounting bracket (1) has through holes evenly spaced. A threaded sleeve (32) is fixedly installed in the through hole. The adjusting screw (31) is connected to the inside of the threaded sleeve (32) by a threaded connection. The lower end of the adjusting screw (31) is connected to the lens holder (2) by a bearing. Compression springs (33) are evenly arranged between the lens holder (2) and the mounting bracket (1).

6. An optical lens mounting base according to claim 5, characterized in that: The sealing element (4) is made of flexible rubber and is deformable. The sealing element (4) has round holes corresponding to the adjusting screw (31) and the compression spring (33).

7. An optical lens mounting base according to claim 6, characterized in that: The clamping component (6) includes an annular frame (61), a push rod (62), a sealing rubber (63), and a clamping ring (64). The annular frame (61) is installed inside the annular groove. The lower end of the annular frame (61) has evenly arranged telescopic holes. The push rod (62) is slidably arranged in the telescopic holes. The clamping ring (64) is installed between the lower ends of the push rod (62). The sealing rubber (63) is installed in the gap between the upper end of the clamping ring (64) and the annular frame (61).

Images