Positioning device for optical lens testing

Abstract

The utility model discloses a positioning device for optical lens testing relates to optical lens testing technical field, including base and testing mechanism, the upper surface of base is provided with the connecting seat, and the two connecting frames are movably clamped in the connecting seat, and the opposite surface of two connecting frames all is fixedly connected with the clamping block, is provided with the fixed base in the connecting seat, and the fixed base below is provided with the locating seat, and the fixed clamping block is moved together with the relative movement of two connecting frames, and two clamping blocks are rubber material, and the optical lens will be clamped and fixed along with the movement, and the elastic force of the reset spring fixed on two connecting frames is received while being fixed, makes two connecting frames keep having a relative propelling force, can avoid that the rotation of screw rod is affected by outside and causes the loosening of clamping, improves the stability of overall clamping, realizes the positioning of lens through fixing the optical lens in the specific position, guarantees the accuracy of test result.

Description

Technical Field

[0001] This utility model relates to the field of optical lens testing technology, and in particular to a positioning device for optical lens testing. Background Technology

[0002] Positioning devices for optical lens testing serve as core equipment for optical lens performance testing, playing a crucial role in lens research and development, production, and quality control. They are primarily used to fix the optical lens, ensuring it maintains a stable position and orientation during testing, thereby guaranteeing the accuracy and reliability of test data. Such positioning devices typically consist of the following components:

[0003] 1. Mount: Used to support the optical lens, providing a stable support base for the lens;

[0004] 2. Clamping mechanism: The lens is clamped and fixed by mechanical or pneumatic means to prevent the lens from shifting during testing;

[0005] 3. Positioning and calibration components: These components help to achieve precise alignment between the lens optical axis and the optical path of the testing equipment, ensuring the accuracy of light transmission and imaging.

[0006] 4. Base and adjustment components: Some positioning devices are equipped with angle, height and other adjustment structures to adapt to different testing scenario requirements.

[0007] Currently, various positioning devices and technologies are employed in the industry to achieve stable clamping and precise positioning of optical lenses. Some manufacturers use mechanical bayonet-type positioning devices, which fix the lens through a centering mechanical bayonet, offering a simple structure and high positioning accuracy. Other manufacturers use image-calibrated positioning devices, utilizing computer vision technology to achieve non-contact measurement and positioning, offering advantages in real-time performance and robustness. In addition, temperature-controlled positioning devices and piezoelectric objective lens positioning devices are used in some high-end testing scenarios to meet specific testing requirements.

[0008] However, the above-described implementation still has the following problems: In terms of adapting to optical lenses of different sizes, the height of the fixed seat of the traditional positioning device is mostly a fixed value or has a limited adjustment range, making it difficult to take into account the differences in lens length and diameter. When testing small-sized lenses, the fixed seat may be too high, causing the clamping mechanism to be unable to accurately act on the optimal force point of the lens, resulting in eccentric clamping, uneven force, or even lens damage. When testing large-sized lenses, a fixed seat that is too low will cause the lens's center of gravity to shift, making it prone to shaking during the test and affecting the stability of the optical axis and the test accuracy. To address this problem, this application proposes a solution by setting up a clamping and positioning mechanism, which allows the optical lens to achieve the optimal clamping position for lenses of different sizes through the cooperation of the adjustable height fixed seat and the clamping mechanism, thereby effectively solving the shortcomings of the prior art and improving the stability, accuracy, and efficiency of lens testing. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a positioning device for testing optical lenses. It solves the problem that the height of the fixed seat in traditional positioning devices is mostly a fixed value or has a limited adjustment range, making it difficult to take into account the differences in lens length and diameter. When testing small-sized lenses, the fixed seat may be too high, causing the clamping mechanism to be unable to accurately act on the optimal force point of the lens, resulting in eccentric clamping, uneven force, or even lens damage.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A positioning device for testing optical lenses includes a base and a testing mechanism. A connecting seat is provided on the upper surface of the base. Two connecting frames are movably engaged within the connecting seat. Clamping blocks are fixedly connected to the opposing surfaces of the two connecting frames. A fixing seat is provided within the connecting seat. A positioning seat is provided below the fixing seat. Two round rods are fixedly connected to the lower surface of the fixing seat. Return springs are fixedly connected to the opposing surfaces of the two connecting frames. A lead screw is rotatably connected within the connecting seat. A screw rod is fixedly connected within the connecting seat. Two main rods are fixedly connected to the upper surface of the positioning seat, and the two main rods are movably engaged with the two round rods respectively.

[0012] Preferably, the inner wall of the connecting seat has two slots, which are respectively engaged with two connecting frames, the two return springs are respectively fixedly connected to the two slots, and the lead screw is threadedly connected to the two connecting frames.

[0013] Preferably, the screw has two limiting nuts threaded onto its annular side, and a connecting plate is fixedly connected to the lower surface of the fixed base, with the connecting plate movably sleeved with the screw.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The relative movement of the two connecting brackets will cause the fixed clamping blocks to move together. The two clamping blocks are made of rubber. As they move, they will clamp and fix the optical lens. At the same time, the two connecting brackets are subjected to the elastic force of the return springs fixed on them, so that the two connecting brackets maintain a relative pushing force. This can prevent the lead screw from rotating due to external influences, which would cause the clamping to loosen, thus improving the overall clamping stability. By fixing the optical lens in a specific position, the lens positioning is achieved, ensuring the accuracy of the test results.

[0016] 2. During the test, the two limit nuts are rotated in opposite directions to open the limit fixing of the connecting plate. At this time, the connecting plate can move up and down. During the movement of the connecting plate, the fixed base will move together. The movement of the fixed base will move the optical lens placed on it together. The distance between the fixed base and the two clamping blocks is adjusted according to the size and length of the optical lens to make the two clamping blocks in the optimal clamping position, thereby ensuring the stability of the optical lens clamping and avoiding eccentric clamping caused by height deviation. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the connector of this utility model;

[0020] Figure 3 This is a structural diagram of the connecting frame of this utility model;

[0021] Figure 4 This is a structural diagram of the fixing base of this utility model.

[0022] Legend: 1. Base; 2. Testing mechanism; 3. Connecting seat; 4. Lead screw; 5. Fixed seat; 6. Screw; 7. Limit nut; 8. Connecting plate; 9. Positioning seat; 10. Connecting frame; 11. Clamping block; 12. Return spring; 13. Round rod; 14. Main rod; 15. Slot. Detailed Implementation

[0023] This application provides a positioning device for testing optical lenses, which effectively solves the problems of traditional positioning devices where the height of the fixed seat is mostly fixed or has a limited adjustment range, making it difficult to take into account differences in lens length and diameter. When testing small lenses, the fixed seat may be too high, causing the clamping mechanism to fail to accurately apply force to the lens's optimal point, resulting in eccentric clamping, uneven force, or even lens damage. By providing a clamping and positioning mechanism, the optical lens can achieve the optimal clamping position for lenses of different sizes through the cooperation of the adjustable height fixed seat and the clamping mechanism, thereby effectively solving the shortcomings of the prior art and improving the stability, accuracy, and efficiency of lens testing.

[0024] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application embodiment effectively solves the problem that the height of the fixed seat in traditional positioning devices is mostly fixed or has a limited adjustment range, making it difficult to take into account the differences in lens length and diameter. When testing small-sized lenses, the fixed seat may be too high, causing the clamping mechanism to be unable to accurately act on the optimal force point of the lens, resulting in eccentric clamping, uneven force, or even lens damage. The overall idea is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a positioning device for testing optical lenses, including a base 1 and a testing mechanism 2. A connecting seat 3 is provided on the upper surface of the base 1. Two connecting frames 10 are movably engaged within the connecting seat 3. Clamping blocks 11 are fixedly connected to the opposing surfaces of the two connecting frames 10. A fixing seat 5 is provided inside the connecting seat 3. A positioning seat 9 is provided below the fixing seat 5. Two round rods 13 are fixedly connected to the lower surface of the fixing seat 5. Return springs 12 are fixedly connected to the opposing surfaces of the two connecting frames 10. A lead screw 4 is rotatably connected inside the connecting seat 3. A screw 6 is fixedly connected inside the connecting seat 3. Two main rods 14 are fixedly connected to the upper surface of the positioning seat 9. The two main rods 14 are movably engaged with the two round rods 13 respectively. During testing... During the process, the optical lens to be tested is placed on the fixed base 5. At this time, by rotating the lead screw 4, the two connecting brackets 10 sleeved on it are moved relative to each other by the thread action. The relative movement of the two connecting brackets 10 will drive the fixed clamping blocks 11 to move together. The two clamping blocks 11 are made of rubber. As the movement proceeds, they will clamp and fix the optical lens. At the same time, the two connecting brackets 10 are subjected to the elastic force of the return spring 12 fixed on them, so that the two connecting brackets 10 maintain a relative pushing force. This can prevent the lead screw 4 from rotating due to external influences, which would cause the clamping to loosen, and improve the overall clamping stability. By fixing the optical lens in a specific position, the lens positioning is achieved, ensuring the accuracy of the test results.

[0026] Two slots 15 are provided on the inner wall of the connecting seat 3. The two slots 15 are movably engaged with the two connecting brackets 10 respectively. Two return springs 12 are fixedly connected to the two slots 15 respectively. The lead screw 4 is threadedly connected to the two connecting brackets 10. Two limit nuts 7 are threadedly connected to the annular side of the screw 6. A connecting plate 8 is fixedly connected to the lower surface of the fixed seat 5. The connecting plate 8 is movably engaged with the screw 6. During the test, the two limit nuts 7 are rotated in opposite directions to open the limit fixation of the connecting plate 8. At this time, the connecting plate 8 can move up and down. During the movement of the connecting plate 8, the fixed seat 5 will move together. The movement of the fixed seat 5 will move the optical lens placed on it together. The distance between the fixed seat 5 and the two clamping blocks 11 is adjusted according to the size and length of the optical lens so that the two clamping blocks 11 are in the optimal clamping position, thereby ensuring the stability of the optical lens clamping and avoiding eccentric clamping caused by height deviation.

[0027] Among them, base 1: supports the entire positioning device, provides a stable installation foundation for other components, ensures the overall stability of the device during the test, and guarantees the accuracy of the test;

[0028] Testing Unit 2: Performs performance testing on optical lenses and works with other components to achieve lens positioning; it is the core functional component for completing optical lens testing.

[0029] Connector 3: Installs components such as connector 10 and lead screw 4, providing installation space for the clamping mechanism, ensuring orderly assembly of components, and realizing the lens clamping and positioning function;

[0030] Lead screw 4: When it rotates, it drives the connecting frame 10 to move relative to each other, so that the clamping block 11 clamps and fixes the optical lens. It is the key transmission component for controlling the clamping action.

[0031] Mount 5: Supports the optical lens, and adjusts its height to position the lens in the optimal position. It works with clamping block 11 to stably fix the lens and ensure test accuracy.

[0032] Screw 6: Cooperates with connecting plate 8 and limit nut 7 to realize height adjustment of fixed base 5, so that the device can be adapted to lenses of different sizes and improve the applicability of the device;

[0033] Limit nut 7: Fixes the connecting plate 8, locks the height of the fixing seat 5, prevents the position of the fixing seat 5 from changing during the test, and ensures the stability of the lens clamping position;

[0034] Connecting plate 8: Connects the fixed base 5 and the screw 6, transmits the height adjustment action, and enables the fixed base 5 to move up and down along the screw 6 to achieve precise height adjustment;

[0035] Positioning seat 9: Supports the fixed seat 5, and works with the main rod 14 and the round rod 13 to ensure the stability of the fixed seat 5 when it moves, and to ensure that the height adjustment is accurate and smooth;

[0036] Connecting frame 10: connects clamping block 11 and lead screw 4, transmits the rotational power of lead screw 4, drives clamping block 11 to move, and realizes clamping and releasing of lens;

[0037] Clamping block 11: Directly clamps the optical lens. The rubber material prevents damage to the lens. It works with the connecting bracket 10 to achieve stable clamping and ensure accurate lens positioning.

[0038] Return spring 12: provides relative pushing force to the connecting frame 10, prevents the screw 4 from rotating and causing the clamp to loosen, enhances clamping stability, and improves the reliability of the device;

[0039] Round rod 13: Cooperates with main rod 14 to guide the fixed seat 5 to move up and down, ensuring the straightness and stability of the fixed seat 5 when it moves, and ensuring accurate height adjustment;

[0040] Main rod 14: It is movably connected to the round rod 13, supports the fixed seat 5, guides its up and down movement, ensures the smooth adjustment of the height of the fixed seat 5, and improves the accuracy of the device;

[0041] Slot 15: engages with connecting bracket 10, provides a fixing point for return spring 12, ensures smooth movement and accurate positioning of connecting bracket 10, and helps to achieve stable clamping action.

[0042] Working principle: During testing, the optical lens to be tested is placed on the mounting base 5. Rotating the lead screw 4 causes the two connecting brackets 10 fitted on it to move relative to each other due to the threaded action. This relative movement of the two connecting brackets 10 drives the fixed clamping blocks 11 to move as well. The two clamping blocks 11 are made of rubber and, as they move, clamp and fix the optical lens. Simultaneously, the two connecting brackets 10 are subjected to the elastic force of the fixed return springs 12, maintaining a relative pushing force between them. This prevents the lead screw 4 from rotating due to external influences, thus avoiding loosening of the clamp and improving the overall stability of the clamping. The optical lens is fixed in a specific position to ensure the accuracy of the test results. During the test, the two limit nuts 7 are rotated in opposite directions to open the limit fixing of the connecting plate 8. At this time, the connecting plate 8 can move up and down. During the movement of the connecting plate 8, the fixed base 5 will move together. The movement of the fixed base 5 will move the optical lens placed on it together. The distance between the fixed base 5 and the two clamping blocks 11 is adjusted according to the size and length of the optical lens to make the two clamping blocks 11 in the optimal clamping position, thereby ensuring the stability of the clamping of the optical lens and avoiding eccentric clamping caused by height deviation.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A positioning device for testing optical lenses, comprising a base (1) and a testing mechanism (2), characterized in that, The upper surface of the base (1) is provided with a connecting seat (3), and two connecting frames (10) are movably engaged in the connecting seat (3). Clamping blocks (11) are fixedly connected to the opposite surfaces of the two connecting frames (10). A fixing seat (5) is provided in the connecting seat (3), and a positioning seat (9) is provided below the fixing seat (5). Among them, two round rods (13) are fixedly connected to the lower surface of the fixed seat (5), and two return springs (12) are fixedly connected to the opposite sides of the two connecting frames (10). A lead screw (4) is rotatably connected inside the connecting seat (3), and a screw rod (6) is fixedly connected inside the connecting seat (3).

2. The positioning device for testing optical lenses as described in claim 1, characterized in that: Two main rods (14) are fixedly connected to the upper surface of the positioning seat (9). The two main rods (14) are respectively movably connected to the two round rods (13).

3. The positioning device for testing optical lenses as described in claim 1, characterized in that: The inner wall of the connector (3) has two slots (15); The two slots (15) are respectively engaged with the two connecting brackets (10).

4. The positioning device for testing optical lenses as described in claim 3, characterized in that: The two reset springs (12) are fixedly connected to the two slots (15) respectively.

5. The positioning device for testing optical lenses as described in claim 1, characterized in that: The lead screw (4) is threadedly connected to two connecting brackets (10).

6. The positioning device for testing optical lenses as described in claim 1, characterized in that: The screw (6) has two limiting nuts (7) threaded on its annular side.

7. The positioning device for testing optical lenses as described in claim 1, characterized in that: A connecting plate (8) is fixedly connected to the lower surface of the fixed base (5).

8. The positioning device for testing optical lenses as described in claim 7, characterized in that: The connecting plate (8) is movably sleeved with the screw (6).

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