Medium and large lens curvature radius ultra-precision measurement and adjustment device

Abstract

The utility model provides a medium and large lens curvature radius ultra-precision measurement and adjustment device, and relates to the technical field of lens measurement, the medium and large lens curvature radius ultra-precision measurement and adjustment device comprises a fixing frame, a mounting plate is fixedly mounted above the fixing frame, and through an arranged medium and large lens measurement and adjustment assembly and a non-contact laser measurement head, a high-precision laser interference measurement principle is adopted; the contour data of the surface of the lens can be quickly and accurately obtained; the cooperation of a first electric slide rail, a first electric slide block, a second electric slide rail and a second electric slide block enables the non-contact laser measuring head to accurately move in the X and Y directions, and the cooperation of a first electric telescopic rod drives the non-contact laser measuring head to lift and move, so that the non-contact laser measuring head can move in the Z-axis direction. The positioning precision reaches the submicron level; collected lens surface contour data can be transmitted to the data processing device to be analyzed and processed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lens measurement technical field especially relates to a big lens curvature radius super precision measurement and adjusting device. BACKGROUND

[0002] In the optical field, as a key optical element, the precision of the curvature radius of the big lens directly affects the key indicators such as the imaging quality and focusing performance of the optical system. At present, the traditional big lens curvature radius measurement methods mainly include the spherometer measurement method and the interference measurement method. The spherometer measurement method is relatively simple to operate, but the measurement precision is limited, and it is difficult to meet the demand of modern optical manufacturing for super precision measurement. Although the interference measurement method has high precision, it has strict requirements for the measurement environment, and the equipment cost is expensive, and the measurement efficiency is low.

[0003] In terms of lens curvature radius adjustment, the existing adjustment methods mainly adopt manual grinding or mechanical processing. These methods not only have low efficiency, but also are difficult to achieve high-precision adjustment, which easily leads to damage to the lens surface and affects the optical performance of the lens. It is difficult to ensure the final precision of the lens curvature radius. Therefore, we propose a big lens curvature radius super precision measurement and adjusting device. UTILITY MODEL CONTENTS

[0004] Therefore, the present application provides a big lens curvature radius super precision measurement and adjusting device to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A big lens curvature radius super precision measurement and adjusting device, comprising a fixed frame, a mounting plate is fixedly installed above the fixed frame, first electric sliding rails are fixedly installed on the inner walls of the front and rear sides of the mounting plate, first electric sliding blocks are slidingly installed on the inner sides of the first electric sliding rails, and a big lens measurement and adjustment assembly is arranged above the fixed frame;

[0007] The big lens measurement and adjustment assembly comprises a fixed block, a rotating connecting block, a hydraulic telescopic rod, an adjusting rotating block, a connecting plate and an adjusting plate. The fixed block is fixedly installed at the four corners of the bottom inner wall of the fixed frame. The rotating connecting block is rotatably installed on the inner side of the fixed block. The hydraulic telescopic rod is fixedly installed on the top of the rotating connecting block. The adjusting rotating block is fixedly installed on the output end of the hydraulic telescopic rod. The connecting plate is rotatably installed on the outer side of the adjusting rotating block. The adjusting plate is fixedly installed on the top of the connecting plate.

[0008] Preferably, the top of the first electric sliding block is provided with a mounting groove, the inner side of the mounting groove is fixedly provided with a second electric sliding rail, the inner side of the second electric sliding rail is slidably provided with a second electric sliding block, and the second electric sliding block and the upper side of the middle-large lens measuring and adjusting assembly are provided with a middle-large lens measuring and polishing assembly.

[0009] Preferably, the middle-large lens measuring and adjusting assembly further comprises a first motor, a first driving shaft and a middle-large lens placing turntable, the first motor is fixedly installed at the bottom of the adjusting plate, the first driving shaft is fixedly installed at the output end of the first motor, and the middle-large lens placing turntable is fixedly installed at the top of the first driving shaft.

[0010] Preferably, the middle-large lens measuring and polishing assembly comprises a first electric telescopic rod, a clamping frame and a clamping plate, the first electric telescopic rod is fixedly installed at the left and right sides of the middle-large lens placing turntable, the clamping frame is fixedly installed at the output end of the first electric telescopic rod, and the clamping plate is clamped at the inner side of the clamping frame.

[0011] Preferably, the middle-large lens measuring and polishing assembly further comprises a second electric telescopic rod, a fixed plate, a non-contact laser measuring head, a second motor, a second driving shaft and a polishing disc, the second electric telescopic rod is fixedly installed at the top of the second electric sliding block, the fixed plate is fixedly installed at the output end of the second electric telescopic rod, the non-contact laser measuring head is fixedly installed at the bottom four corners of the fixed plate, the second motor is fixedly installed at the bottom middle of the fixed plate, the second driving shaft is fixedly installed at the output end of the second motor, and the polishing disc is fixedly installed at the bottom of the second driving shaft.

[0012] Preferably, one side of the fixed block, the rotation connecting block, the adjusting rotation block and the connecting plate is provided with a connecting groove, the inner side of the connecting groove is provided with a pin shaft, and the fixed block, the rotation connecting block, the adjusting rotation block and the connecting plate are all provided with an arc-shaped chamfer.

[0013] Preferably, the bottom of the clamping frame is provided with a T-shaped groove, one side of the clamping plate is fixedly provided with a T-shaped block, and the T-shaped block is clamped at the inner side of the T-shaped groove.

[0014] Preferably, the material of the clamping plate is rubber material.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] (1) The utility model relates to a kind of middle and big lens curvature radius ultra-precision measurement and adjusting device, the non-contact laser measuring head is equipped with middle and big lens measurement adjusting component, adopts high-precision laser interferometry principle, can quickly, accurately obtain the profile data of lens surface;The cooperation of first electric slide rail, first electric slide block, second electric slide rail and second electric slide block can let non-contact laser measuring head accurately move in X and Y two directions, cooperate first electric telescopic rod to drive non-contact laser measuring head to move up and down, can let non-contact laser measuring head move in Z axis direction, its positioning accuracy reaches submicron level;The lens surface profile data collected can be transmitted to data processing device and analyzed and processed;

[0017] (2) The utility model relates to a kind of middle and big lens curvature radius ultra-precision measurement and adjusting device, by setting up middle and big lens measurement polishing component, polishing disc surface is coated with high-precision grinding material, can realize the accurate adjustment to lens curvature radius under the premise of not damaging lens surface, ensure the uniformity and stability of grinding process;Polishing disc is installed below fixed plate, can realize the fine adjustment of polishing disc in multiple angle directions, to adapt to the lens adjustment demand of different curvature radius and shape;According to the adjustment parameter calculated by data processing device, automatically adjust the curvature radius of lens.

[0018] To make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A kind of middle and big lens curvature radius ultra-precision measurement and adjusting device of the utility model is shown in the perspective view;

[0020] Figure 2 The three-dimensional diagram of part structure of a kind of middle and big lens curvature radius ultra-precision measurement and adjusting device provided according to the embodiment of the present application is shown;

[0021] Figure 3 The three-dimensional diagram of explosion part structure of a kind of middle and big lens curvature radius ultra-precision measurement and adjusting device provided according to the embodiment of the present application is shown;

[0022] Figure 4 For Figure 3 The enlarged structure diagram of middle A.

[0023] Reference signs:

[0024] 1, middle and big lens measurement adjusting component;2, middle and big lens measurement polishing component;3, fixed frame;4, mounting plate;5, first electric slide rail;6, first electric slide block;7, mounting groove;8, second electric slide rail;9, second electric slide block;

[0025] 11, fixed block; 12, rotating connecting block; 13, hydraulic telescopic rod; 14, adjusting rotating block; 15, connecting plate; 16, adjusting plate; 17, first motor; 18, first drive shaft; 19, middle and large lens placing turntable;

[0026] 21, first electric telescopic rod; 22, clamping frame; 23, clamping plate; 24, second electric telescopic rod; 25, fixed plate; 26, non-contact laser measuring head; 27, second motor; 28, second drive shaft; 29, polishing disc. DETAILED DESCRIPTION

[0027] In order to further understand the invention content, characteristics and effects of the utility model, the following examples are given, and the detailed description is given as follows in combination with the drawings.

[0028] The structure of the utility model will be described in detail below in combination with the drawings.

[0029] Reference Figures 1-4 A middle and large lens curvature radius ultra-precision measuring and adjusting device, comprising a fixed frame 3, a mounting plate 4 is fixedly installed above the fixed frame 3, first electric sliding rails 5 are fixedly installed on the inner walls of the front and rear sides of the mounting plate 4, first electric sliding blocks 6 are slidingly installed on the inner sides of the first electric sliding rails 5, and a middle and large lens measuring and adjusting assembly 1 is arranged above the fixed frame 3.

[0030] The middle and large lens measuring and adjusting assembly 1 comprises a fixed block 11, a rotating connecting block 12, a hydraulic telescopic rod 13, an adjusting rotating block 14, a connecting plate 15 and an adjusting plate 16, the fixed block 11 is fixedly installed on the bottom inner walls of the fixed frame 3, the rotating connecting block 12 is rotatably installed on the inner side of the fixed block 11, the hydraulic telescopic rod 13 is fixedly installed on the top of the rotating connecting block 12, the adjusting rotating block 14 is fixedly installed on the output end of the hydraulic telescopic rod 13, the connecting plate 15 is rotatably installed on the outer side of the adjusting rotating block 14, and the adjusting plate 16 is fixedly installed on the top of the connecting plate 15.

[0031] In the embodiment, a mounting groove 7 is formed in the top of the first electric sliding block 6, a second electric sliding rail 8 is fixedly installed on the inner side of the mounting groove 7, a second electric sliding block 9 is slidingly installed on the inner side of the second electric sliding rail 8, and a middle and large lens measuring and polishing assembly 2 is arranged above the second electric sliding block 9 and the middle and large lens measuring and adjusting assembly 1.

[0032] In the embodiment, the middle and large lens measuring and adjusting assembly 1 further comprises a first motor 17, a first drive shaft 18 and a middle and large lens placing turntable 19, the first motor 17 is fixedly installed on the bottom of the adjusting plate 16, the first drive shaft 18 is fixedly installed on the output end of the first motor 17, and the middle and large lens placing turntable 19 is fixedly installed on the top of the first drive shaft 18.

[0033] In the embodiment, the middle-large lens measurement and polishing assembly 2 comprises a first electric telescopic rod 21, a clamping frame 22 and a clamping plate 23. The first electric telescopic rod 21 is fixedly installed on the left and right sides of the middle-large lens placing turntable 19. The clamping frame 22 is fixedly installed on the output end of the first electric telescopic rod 21. The clamping plate 23 is clamped on the inner side of the clamping frame 22.

[0034] In the embodiment, the middle-large lens measurement and polishing assembly 2 further comprises a second electric telescopic rod 24, a fixed plate 25, a non-contact laser measurement head 26, a second motor 27, a second driving shaft 28 and a polishing disc 29. The second electric telescopic rod 24 is fixedly installed on the top of the second electric sliding block 9. The fixed plate 25 is fixedly installed on the output end of the second electric telescopic rod 24. The non-contact laser measurement head 26 is fixedly installed on the bottom four corners of the fixed plate 25. The second motor 27 is fixedly installed at the middle of the bottom of the fixed plate 25. The second driving shaft 28 is fixedly installed on the output end of the second motor 27. The polishing disc 29 is fixedly installed on the bottom of the second driving shaft 28. The surface of the polishing disc 29 is coated with high-precision grinding material, which can realize accurate adjustment of the lens curvature radius without damaging the lens surface, ensuring the uniformity and stability of the grinding process. The polishing disc 29 is installed below the fixed plate 25, which can realize fine adjustment of the polishing disc 29 in multiple angular directions.

[0035] In the embodiment, the fixed block 11, the rotating connecting block 12, the adjusting rotating block 14 and one side of the connecting plate 15 are all provided with connecting grooves. The inner side of the connecting grooves is provided with a pin shaft. The fixed block 11, the rotating connecting block 12, the adjusting rotating block 14 and the connecting plate 15 are all provided with arc chamfers. In the process of polishing and detection, the hydraulic telescopic rod 13 can be controlled to move and adjust. Since the rotating connecting block 12 and the adjusting rotating block 14 are both rotationally arranged, the adjusting plate 16 can move with the hydraulic telescopic rod 13, which facilitates the adjusting plate 16 and the middle-large lens placing turntable 19 above to be in an inclined state. The first motor 17 drives the first driving shaft 18 and the middle-large lens placing turntable 19 to rotate, which can adjust the middle-large lens to different positions and angles during detection.

[0036] In the embodiment, the bottom of the clamping frame 22 is provided with a T-shaped groove. One side of the clamping plate 23 is fixedly installed with a T-shaped block, which is clamped on the inner side of the T-shaped groove. Before detecting the middle-large lens, according to the size and curvature of the middle-large lens, the corresponding second electric telescopic rod 24 can be installed on the inner side of the clamping frame 22, which can make the clamping plate 23 have a larger area when clamping different middle-large lenses, so as to have a better clamping effect.

[0037] In this embodiment, the material of the clamping plate 23 is rubber material; the clamping plate 23 can clamp and fix the large lens, and since the material of the clamping plate 23 is rubber material, the outer surface of the large lens will not be damaged during clamping.

[0038] Specifically, before detecting the large lens, according to the size and curvature of the large lens, the corresponding second electric telescopic rod 24 is installed on the inner side of the clamping frame 22, and the large lens is placed above the large lens placing turntable 19. The first electric telescopic rod 21 drives the clamping plate 23 to move, and the clamping plate 23 can clamp and fix the large lens. Since the material of the clamping plate 23 is rubber material, the outer surface of the large lens will not be damaged during clamping.

[0039] The non-contact laser measuring head 26 adopts high-precision laser interference measurement principle and can quickly and accurately obtain the profile data of the lens surface. The cooperation of the first electric sliding rail 5, the first electric sliding block 6, the second electric sliding rail 8 and the second electric sliding block 9 can enable the non-contact laser measuring head 26 to move accurately in X and Y directions. The cooperation of the second electric telescopic rod 24 drives the non-contact laser measuring head 26 to move up and down, which can enable the non-contact laser measuring head 26 to move in Z axis direction with a positioning accuracy of sub-micron level. The collected lens surface profile data can be transmitted to the data processing device for analysis and processing.

[0040] The surface of the polishing disc 29 is coated with high-precision grinding material, which can accurately adjust the radius of curvature of the lens without damaging the lens surface, ensuring the uniformity and stability of the grinding process. The polishing disc 29 is installed below the fixed plate 25 and can be finely adjusted in multiple angular directions to adapt to the adjustment requirements of lenses with different radii of curvature and shapes. According to the adjustment parameters calculated by the data processing device, the lens is automatically adjusted in radius of curvature.

[0041] During the polishing and detection process, the hydraulic telescopic rod 13 can be controlled to move and adjust. Since the rotating connecting block 12 and the adjusting rotating block 14 are both rotatingly arranged, the adjusting plate 16 can move with the hydraulic telescopic rod 13, which facilitates the inclination of the adjusting plate 16 and the large lens placing turntable 19 above. The first motor 17 drives the first driving shaft 18 and the large lens placing turntable 19 to rotate, which can adjust the large lens to different positions and angles during detection, so that the detection range of the non-contact laser measuring head 26 is larger and the detection of the non-contact laser measuring head 26 is more accurate.

[0042] It should be noted that although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for ultra-precision measurement and adjustment of the radius of curvature of medium and large lenses, characterized in that, include: A fixed frame (3) is provided, and an mounting plate (4) is fixedly installed on the top of the fixed frame (3). A first electric slide rail (5) is fixedly installed on the inner walls of the front and rear sides of the mounting plate (4). A first electric slider (6) is slidably installed on the inner side of the first electric slide rail (5). A medium-to-large lens measurement and adjustment assembly (1) is provided on the top of the fixed frame (3). The medium-to-large lens measurement and adjustment assembly (1) includes a fixed block (11), a rotating connecting block (12), a hydraulic telescopic rod (13), an adjusting rotating block (14), a connecting plate (15), and an adjusting plate (16). The fixed block (11) is fixedly installed at the four corners of the bottom inner wall of the fixed frame (3). The rotating connecting block (12) is rotatably installed on the inner side of the fixed block (11). The hydraulic telescopic rod (13) is fixedly installed on the top of the rotating connecting block (12). The adjusting rotating block (14) is fixedly installed on the output end of the hydraulic telescopic rod (13). The connecting plate (15) is rotatably installed on the outer side of the adjusting rotating block (14). The adjusting plate (16) is fixedly installed on the top of the connecting plate (15).

2. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 1, characterized in that, The top of the first electric slider (6) is provided with a mounting groove (7), and the inner side of the mounting groove (7) is fixedly installed with a second electric slide rail (8). The inner side of the second electric slide rail (8) is slidably installed with a second electric slider (9). The second electric slider (9) and the medium and large lens measurement and adjustment assembly (1) are provided with a medium and large lens measurement and polishing assembly (2).

3. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 1, characterized in that, The medium-to-large lens measurement and adjustment assembly (1) further includes a first motor (17), a first drive shaft (18), and a medium-to-large lens placement turntable (19). The first motor (17) is fixedly installed at the bottom of the adjustment plate (16), the first drive shaft (18) is fixedly installed at the output end of the first motor (17), and the medium-to-large lens placement turntable (19) is fixedly installed at the top of the first drive shaft (18).

4. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 2, characterized in that, The medium-to-large lens measuring and polishing assembly (2) includes a first electric telescopic rod (21), a clamping frame (22), and a clamping plate (23). The first electric telescopic rod (21) is fixedly installed on the left and right sides of the medium-to-large lens placement turntable (19). The clamping frame (22) is fixedly installed on the output end of the first electric telescopic rod (21). The clamping plate (23) is clamped to the inside of the clamping frame (22).

5. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 2, characterized in that, The medium-to-large lens measuring and grinding assembly (2) also includes a second electric telescopic rod (24), a fixed plate (25), a non-contact laser measuring head (26), a second motor (27), a second drive shaft (28), and a grinding disc (29). The second electric telescopic rod (24) is fixedly installed on the top of the second electric slider (9). The fixed plate (25) is fixedly installed on the output end of the second electric telescopic rod (24). The non-contact laser measuring head (26) is fixedly installed at the four bottom corners of the fixed plate (25). The second motor (27) is fixedly installed at the bottom center of the fixed plate (25). The second drive shaft (28) is fixedly installed on the output end of the second motor (27). The grinding disc (29) is fixedly installed on the bottom of the second drive shaft (28).

6. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 1, characterized in that, A connecting groove is provided on one side of the fixed block (11), the rotating connecting block (12), the adjusting rotating block (14), and the connecting plate (15). A pin is provided on the inner side of the connecting groove. An arc-shaped chamfer is provided on the fixed block (11), the rotating connecting block (12), the adjusting rotating block (14), and the connecting plate (15).

7. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 4, characterized in that, The bottom of the clip bracket (22) is provided with a T-shaped groove, and a T-shaped block is fixedly installed on one side of the clamping plate (23), and the T-shaped block is snapped into the inside of the T-shaped groove.

8. The ultra-precision measurement and adjustment device for the radius of curvature of a medium-to-large lens according to claim 4, characterized in that, The clamping plate (23) is made of rubber.

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