Self-focusing lens measuring jig

Abstract

The utility model provides a self-focusing lens measuring jig, which is arranged on a workbench of a measuring device and comprises an adjusting bearing module and a rotary driving module, the adjusting bearing module comprises a multi-dimensional adjusting platform arranged on the workbench and a to-be-measured piece positioning structure rotationally arranged on the multi-dimensional adjusting platform, and the rotary driving module is arranged on the multi-dimensional adjusting platform. The rotating driving module comprises a first moving platform which is arranged on the workbench and located on the outer side of the adjusting bearing module, a second moving platform is arranged on the first moving platform, a mounting plate is arranged on the second moving platform, and an elastic transmission part is arranged on the mounting plate; the elastic transmission piece can be in contact fit with a to-be-tested piece arranged on the to-be-tested piece positioning structure so as to drive the to-be-tested piece to rotate. According to the utility model, the elastic transmission piece can be driven by the rotation driving module to realize stable and efficient rotation operation of the to-be-tested piece on the to-be-tested piece positioning structure; and efficient and stable eccentricity measurement operation is performed on the to-be-measured piece in cooperation with the polarimeter, so that the accuracy of a measurement result and the measurement efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of lens testing fixture technology, specifically to a self-focusing lens measuring fixture. Background Technology

[0002] In the production and testing of self-focusing lenses, eccentricity measurement is a crucial quality control step, as its accuracy directly affects the lens's optical performance and usability. Currently, existing eccentricity measurement equipment for self-focusing lenses has some shortcomings in terms of the measuring fixture's ability to support the workpiece, adjust its position, and drive its rotation.

[0003] For example, during eccentric measurement, the workpiece needs to be rotated axially around its axis. The axes of the autocollimator, the workpiece, and the collimator in the measuring device must be aligned for eccentric measurement to be performed. However, for the drive unit to directly drive the workpiece, its output shaft needs to be connected to the workpiece, which prevents the measuring device from functioning properly. To address the issue that the drive unit often cannot directly drive the workpiece, manual rotation is usually required. However, due to individual differences in operation, manual rotation can lead to poor repeatability of measurement results, affecting accuracy and efficiency. Therefore, there is an urgent need to design a self-focusing lens measuring fixture that can improve measurement accuracy and efficiency. Utility Model Content

[0004] In view of this, the present invention provides a self-focusing lens measuring fixture, which can achieve efficient and stable rotation of the test piece on the test piece positioning structure by adjusting the bearing module in conjunction with the rotary drive module, thereby realizing automatic and stable eccentric measurement of the test piece and greatly improving the accuracy and efficiency of the measurement results.

[0005] To solve the above-mentioned technical problems, this utility model provides a self-focusing lens measuring fixture. The measuring fixture is set on the worktable of a measuring device and includes an adjustment support module and a rotation drive module mounted on the worktable. The adjustment support module includes a multi-dimensional adjustment platform mounted on the worktable and a positioning structure for the workpiece to be measured, which is rotatably mounted on the multi-dimensional adjustment platform. The rotation drive module includes a first moving platform mounted on the worktable and located outside the adjustment support module (brand: Dediweiye, model PG6030-30HGJY), and a second moving platform is an electric translation stage (brand: Dediweiye). Model PG60-75: The slide rail of the second moving platform is set on the slide rail of the first moving platform, and the second moving platform is perpendicular to the first moving platform. A mounting plate is set on the second moving platform, and an elastic transmission component is set on the mounting plate. The elastic transmission component can contact and cooperate with the test piece placed on the test piece positioning structure to drive its rotation. This utility model can achieve stable and efficient rotation of the test piece on the test piece positioning structure by using a rotation drive module to drive the elastic transmission component. Combined with a polarizer, it can achieve efficient and stable eccentric measurement of the test piece, greatly improving the accuracy and efficiency of the measurement results.

[0006] The multi-dimensional adjustment platform includes a lifting platform set on the workbench. The brand of the lifting platform is Dediweiye, and the model is R20-601J. The lifting platform is equipped with front and rear adjustment platforms and left and right adjustment platforms. The brand of the front and rear adjustment platforms and the model of the left and right adjustment platforms are Dediweiye, and the model is S13-630JL-GT.

[0007] The positioning structure of the test piece includes a support plate set on the multi-dimensional adjustment platform and a positioning fixture set on the support plate. The positioning fixture is provided with two spaced-apart support members. The test piece is placed and rotatably positioned between the two support members. The axes of the two support members are parallel to the axis of the test piece, and the outer side of the test piece makes line contact with the support member located on the same side to achieve support.

[0008] The support consists of two cylindrical fulcrums, and the part to be tested is placed between the two cylindrical fulcrums.

[0009] A baffle is provided on the outer side of the positioning fixture and at the ends of the two cylindrical fulcrums.

[0010] Both the first and second mobile platforms are electrically powered translation stages.

[0011] The elastic transmission component is an elastic belt.

[0012] The baffle is a flat glass sheet.

[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0014] 1. Adjusting the position of the self-focusing lens so that it can be imaged by the collimator camera: This utility model can use a multi-dimensional adjustment platform in conjunction with a rotation drive module to make the position of the test piece convenient and quick to adjust, so as to make it imaged by the collimator camera.

[0015] 2. Supporting the self-focusing lens under test: This utility model can support and carry the self-focusing lens through two cylindrical fulcrums on the positioning fixture.

[0016] 3. Driving the self-focusing lens to rotate around the outer contour cylinder: This utility model can realize the rotation of the self-focusing lens by means of a rotation drive module with a mounting plate and an elastic belt, which is more stable and convenient.

[0017] 4. This utility model can adjust the height of the positioning structure of the test piece through the lifting platform in the multi-dimensional adjustment platform. The front and rear adjustment platform and the left and right adjustment platform can be used to make convenient and quick adjustment of the front and rear and left and right positions of the positioning structure of the test piece. It is convenient to adjust the position of the test piece after it has been placed so that the image of the test target enters the collimator field of view and is clearly imaged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the self-focusing lens measuring fixture of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a front view of the self-focusing lens measuring fixture of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 100, Adjustable bearing module; 110, Multi-dimensional adjustment platform; 111, Lifting platform; 112, Front and rear adjustment platform; 113, Left and right adjustment platform; 120, Positioning structure of the part under test; 121, Bearing plate; 122, Positioning fixture; 123, Support component; 130, Rotation drive module; 131, First moving platform; 132, Second moving platform; 133, Mounting plate; 200, Elastic transmission component; 300, Baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-3 As shown: This embodiment provides a self-focusing lens measuring fixture, which is set on the worktable of a measuring device. The measuring device is an eccentricity, which can be either vertical or horizontal depending on the optical path layout. Since self-focusing lenses are all long, rod-shaped lenses, and the eccentricity measurement reference for both reflection and transmission of self-focusing lenses is a cylindrical self-focusing lens, a horizontal structure is used for cylindrical test pieces. In this invention, a horizontal eccentricity is selected. During measurement, the test piece is placed horizontally on the measuring fixture and then rotated around its own axis. This is to ensure the consistency of the test results.

[0024] It is important to note here that the self-focusing lens measuring fixture is located in the center of the eccentricity's stage, and the collimator is located on the left side of the measuring fixture with its light outlet facing the fixture. The autocollimator is located on the right side of the measuring fixture, with its objective lens facing the fixture. The fiber optic light source can be freely placed, and the light source and the collimator or autocollimator are connected via flexible optical fiber.

[0025] The device includes an adjustment support module 100 and a rotation drive module 130 mounted on the worktable. The adjustment support module 100 includes a multi-dimensional adjustment platform 110 mounted on the worktable and a test piece positioning structure 120 rotatably mounted on the multi-dimensional adjustment platform 110. The rotation drive module 130 includes a first moving platform 131 mounted on the worktable and located outside the adjustment support module 100 (brand: Dediweiye, model PG6030-30HGJY) and a second moving platform 132, an electric translation stage (brand: Dediweiye, model PG60-75). Both the first and second moving platforms 131 and 132 are electric translation stages. The slide rail of the second moving platform 132 is mounted on the slide rail of the first moving platform 131, and the second moving platform 132 is perpendicular to the first moving platform 131. A mounting plate 133 is mounted on the second moving platform 132, and an elastic transmission component 200 is mounted on the mounting plate 133. The elastic transmission component 200 can interact with the test piece positioning structure 120. The test piece on the structure 120 is contacted and engaged to drive its rotation. The rotation drive module 130 also includes a manual translation stage on the second moving platform 132, brand: Dediweiye, model: F13-620JC. It is mainly used to adjust the front and back position of the second moving platform 132. Together with the first moving platform 131 and the second moving platform 132, it can adjust the up-down, front-back, left-right position of the mounting plate 133 and the elastic transmission component 200 on the mounting plate 133, making the operation more convenient. This utility model can achieve stable and efficient rotation of the test piece on the test piece positioning structure 120 by using the rotation drive module 130 with the elastic transmission component 200. Together with the polarizer, it can achieve efficient and stable eccentric measurement of the test piece. It solves the problem that traditional measuring devices mostly require manual rotation of the test piece. However, when manually rotating the test piece, individual differences in operation can easily lead to poor repeatability of the measurement results, affecting the accuracy and efficiency of the measurement results.

[0026] According to one embodiment of the present invention, such as Figure 1-2As shown, the multi-dimensional adjustment platform 110 includes a lifting platform 111 mounted on the workbench. The lifting platform 111 is branded as "Dediweiye" and has a model number of R20-601J. The lifting platform 111 is equipped with a front-to-back adjustment platform 112 and a left-to-right adjustment platform 113. The front-to-back adjustment platform 112 and the left-to-right adjustment platform 113 are branded as "Dediweiye" and have a model number of S13-630JL-GT. This utility model can adjust the height of the positioning structure 120 of the test piece through the lifting platform 111 in the multi-dimensional adjustment platform 110, and can conveniently and quickly adjust the front-to-back and left-to-right positions of the positioning structure 120 of the test piece through the front-to-back adjustment platform 112 and the left-to-right adjustment platform 113. This facilitates the adjustment of the position of the placed test piece so that the image of the test target enters the collimator's field of view and is clearly imaged.

[0027] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the positioning structure 120 for the test piece includes a support plate 121 disposed on the multi-dimensional adjustment platform 110 and a positioning fixture 122 disposed on the support plate 121. The positioning fixture 122 is provided with two spaced-apart support members 123. The test piece is placed and rotatably disposed between the two support members 123. The axes of the two support members 123 are parallel to the axis of the test piece, and the outer side of the test piece makes line contact with the support member 123 located on the same side to achieve support.

[0028] According to another embodiment of the present invention, as shown in Figure 2, the support member 123 consists of two cylindrical fulcrums, and the part to be tested is placed between the two cylindrical fulcrums. The present invention can support the outer wall of the part to be tested through the two cylindrical fulcrums, which facilitates the rotation of the part to be tested on the positioning fixture 122 under the action of external force.

[0029] A baffle 300 is provided on the outer side of the positioning fixture 122 at the end of the two cylindrical fulcrums. The baffle 300 is used to limit the axial position of the test piece. The baffle 300 is a glass plate. This invention can ensure that products of the same model can be placed in a consistent position quickly and efficiently during measurement by installing a glass plate on the outer side of the positioning fixture 122 at the rear end of the two cylindrical fulcrums, thereby reducing the adjustment workload when changing the test piece. The self-focusing lens is placed directly on the two calibrated metal cylinders and in contact with the two cylindrical lines. The two cylinders are the fulcrums for the self-focusing lens to rotate. Under the action of the rotation drive module 130, the test piece is pushed to rotate by the elastic belt, ensuring that the test piece rotates around its own cylindrical contour.

[0030] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, the elastic transmission component 200 is an elastic belt. When the test piece is placed in place and an eccentricity test is required, the second moving platform 132 of the rotary drive module 130 is started to drive the mounting plate 133 to descend with the elastic belt and press down on the self-focusing lens under test. Then, the first moving platform 131 is started to drive the elastic belt to move horizontally in the left and right directions. At this time, the elastic belt pulley can drive the self-focusing lens under test to rotate on the positioning fixture 122. Then, with the help of the measurement software, the eccentricity of the test piece can be measured.

[0031] How to use this utility model:

[0032] First, it should be clarified that the measuring fixture involved in this utility model is mainly used for measuring the eccentricity of cylindrical lenses. This utility model takes the measurement of the eccentricity of a self-focusing lens as an example to illustrate its usage method in detail. When it is necessary to measure the eccentricity of a self-focusing lens, the operator first places the self-focusing lens to be measured between two cylindrical fulcrums and pushes its end to contact the glass plate. Then, the operator adjusts the multi-dimensional adjustment platform 110 and the rotary drive module 130 to press the self-focusing lens with the elastic belt, and then moves it to rotate. During this process, the measuring instrument can measure the eccentricity of the self-focusing lens. This utility model can achieve efficient and stable rotation of the test piece on the positioning structure by adjusting the bearing module 100 in conjunction with the rotary drive module, realizing automatic and stable eccentricity measurement of the test piece, which greatly improves the accuracy and efficiency of the measurement results.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A self-focusing lens measuring fixture, wherein the measuring fixture is mounted on the worktable of a measuring device, characterized in that: The device includes an adjustment support module (100) and a rotation drive module (130) mounted on the workbench. The adjustment support module (100) includes a multi-dimensional adjustment platform (110) mounted on the workbench and a test piece positioning structure (120) rotatably mounted on the multi-dimensional adjustment platform (110). The rotation drive module (130) includes a first moving platform (131) mounted on the workbench and located outside the adjustment support module (100). A second moving platform (132) is mounted on the first moving platform (131). A mounting plate (133) is mounted on the second moving platform (132). An elastic transmission member (200) is mounted on the mounting plate (133). The elastic transmission member (200) can contact and cooperate with the test piece placed on the test piece positioning structure (120) to drive its rotation.

2. The self-focusing lens measuring fixture as described in claim 1, characterized in that: The multidimensional adjustment platform (110) includes a lifting platform (111) set on the workbench, and the lifting platform (111) is provided with a front and rear adjustment platform (112) and a left and right adjustment platform (113).

3. The self-focusing lens measuring fixture as described in claim 2, characterized in that: The positioning structure (120) for the test piece includes a support plate (121) disposed on the multi-dimensional adjustment platform (110) and a positioning fixture (122) disposed on the support plate (121). The positioning fixture (122) is provided with two spaced-apart support members (123), and the test piece is placed and rotated between the two support members (123).

4. The self-focusing lens measuring fixture as described in claim 3, characterized in that: The support (123) consists of two cylindrical fulcrums, and the test piece is placed between the two cylindrical fulcrums.

5. The self-focusing lens measuring fixture as described in claim 4, characterized in that: A baffle (300) is provided on the outside of the positioning fixture (122) and at the ends of the two cylindrical fulcrums.

6. The self-focusing lens measuring fixture as described in claim 1, characterized in that: Both the first mobile platform (131) and the second mobile platform (132) are electric translation stages.

7. The self-focusing lens measuring fixture as described in claim 5, characterized in that: The baffle (300) is a flat glass sheet.

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