A lens performance testing device

Abstract

The application discloses a lens performance testing device, and relates to the technical field of lens performance detection, which comprises a light source module, a lens module and a detector module, wherein the light source module comprises a working light source and a light source support, the working light source is installed on the light source support; the lens module comprises a lens clamping component and a lens support, the lens clamping component is used for clamping a lens to be detected, and the lens clamping component is installed on the lens support; the detector module comprises a detector device and a detector support, the detector device is installed on the detector support; the light beam emitted by the working light source is incident on the detector device after passing through the lens to be detected, the detector device is used for detecting and analyzing the light beam after passing through the lens to be detected, and the lens to be detected is tested. The application forms a modular testing light path, realizes full coverage of wide-band, small-size and high-compatibility testing requirements, forms an intelligent closed loop of design-testing-production, and provides efficient and accurate technical support for the research and development of high-speed optical modules.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lens performance detection, in particular to a lens performance testing device. BACKGROUND

[0002] With the rapid development of network information technology, the data information transmission rate continues to rise, and the performance requirements of optical modules as the core components of optical communication systems are increasingly stringent. As a key component of the optical system of the optical module, the coupling efficiency, size miniaturization and process stability of the single / multi-mode coupling mirror directly affect the overall performance of the system. However, the existing technical system has significant defects in the testing and process optimization of the coupling mirror, which is specifically manifested in the following three technical bottlenecks:

[0003] Firstly, the traditional testing mode relies on a linear process of “sample trial production → customer verification → process solidification”, which leads to a long testing cycle and delayed feedback. Due to the closed nature of optical system design, coupling mirror performance anomalies are often discovered through module-end feedback, making it difficult to accurately locate the root cause of the problem and further optimize process parameters in real time. This after-the-fact remedial testing mechanism not only slows down product development progress, but also leads to frequent economic disputes between suppliers and demanders due to batch quality problems caused by process fluctuations.

[0004] Secondly, optical module manufacturers need to build diversified testing platforms to adapt to different customer system requirements, but the architectures of optical modules for different customers differ significantly, and the testing equipment needs to be frequently calibrated, resulting in high hardware and labor costs. At the same time, the expandability of the dedicated testing system is insufficient, making it difficult to cover the testing needs of wide-band (such as O / E / S / C / L / U bands) and multi-form products, further increasing the research and development costs.

[0005] More importantly, existing testing methods can only provide end performance feedback, lacking dynamic monitoring capabilities for coupling mirror individual parameters (such as surface precision and coating uniformity) and process parameters (such as injection molding temperature and coating thickness). This “black box” testing mode breaks the data correlation between design, process and testing, making process optimization rely on empiricism and making it difficult to establish an accurate mapping relationship model, which seriously hinders the improvement of product iteration efficiency and process stability.

[0006] In view of the above technical problems, how to test the coupling mirror is a technical problem to be solved. SUMMARY

[0007] The lens performance testing device aims to solve the problems in the prior art, and realizes the full coverage of the wide-band, small-size and high-compatibility testing requirements by the combination and application of the light source module, the lens module and the detector module, breaks through the shackles of the traditional testing mode, forms an intelligent closed loop of design-testing-production, and provides efficient and accurate technical support for the research and development of high-speed optical modules.

[0008] To achieve the above object, the present application provides the following scheme:

[0009] The lens performance testing device comprises a light source module, a lens module and a detector module, the light source module comprises a working light source and a light source support, the working light source is installed on the light source support, the lens module comprises a lens clamping component and a lens support, the lens clamping component is used for clamping a lens to be tested, and the lens clamping component is installed on the lens support, the detector module comprises a detector device and a detector support, the detector device is installed on the detector support, the light beam emitted by the working light source is incident on the detector device after passing through the lens to be tested, the detector device is used for detecting and analyzing the light beam after passing through the lens to be tested, and the lens to be tested is tested.

[0010] In an embodiment, the light source module further comprises an indicating light source, the indicating light source is installed on the light source support, the lens module is provided with a first alignment hole, the detector module is provided with a second alignment hole, the indicating light source is used for assisting in adjusting the irradiation position of the working light source, or the parallelism of the installation of the light source module, the lens module and the detector module is ensured by adjusting the light source support, the lens support and / or the detector support so that the visible light emitted by the indicating light source can pass through the first alignment hole and the second alignment hole.

[0011] In an embodiment, the light source module further comprises a light source angle rotating table, the light source angle rotating table comprises a fixed part and a rotating part, the rotating part is rotationally installed on the fixed part, the light source support is installed on the rotating part, and the rotating part is used for realizing the pitch adjustment of the light source module.

[0012] In an embodiment, the working light source comprises a light source fixing cylinder, a light source fixing cover, an LD light source and a power board, the light source fixing cylinder is installed on the light source support, the light source fixing cover is used for installing the LD light source on one end of the light source fixing cylinder, the LD light source is connected to the power board through a power supply line, and the power board is located at the other end of the light source fixing cylinder away from the LD light source.

[0013] In an embodiment, the lens clamping component comprises a first clamping piece and a second clamping piece for snap-fit connection, the first clamping piece is provided with a first mounting groove on the side close to the second clamping piece, the second clamping piece is provided with a second mounting groove on the side close to the first clamping piece, and the first mounting groove and the second mounting groove are snap-fit to form a clamping groove for clamping the lens to be tested.

[0014] In an embodiment, the first clamping piece is provided with a third mounting groove on the side away from the first mounting groove, the inner bottom surface of the third mounting groove serves as a theoretical zero surface of the working light source and the lens to be tested, the inner bottom surface of the first mounting groove serves as a front end zero surface of the lens to be tested, and the inner bottom surface of the second mounting groove serves as a rear end zero surface of the lens to be tested.

[0015] In an embodiment, the detector device comprises a beam analyzer and a single-mode optical fiber.

[0016] In an embodiment, the detector module further comprises a single-mode optical fiber clamping piece and an optical fiber adapter, the single-mode optical fiber is mounted on the optical fiber adapter, the optical fiber adapter is mounted on the single-mode optical fiber clamping piece, the single-mode optical fiber clamping piece is mounted on the detector support, and the optical fiber adapter has an opening for the light beam to enter.

[0017] In an embodiment, a base and a sliding rail are further included, the sliding rail is mounted on the base, and the lens support and the detector support are slidingly mounted on the sliding rail.

[0018] In an embodiment, the lens module further comprises a first four-axis platform, the lens support is mounted on the moving end of the first four-axis platform, and the fixed end of the first four-axis platform is slidingly mounted on the sliding rail; and the detector module further comprises a second four-axis platform, the detector support is mounted on the moving end of the second four-axis platform, and the fixed end of the second four-axis platform is slidingly mounted on the sliding rail.

[0019] The present application has the following technical effects relative to the prior art:

[0020] The present application combines the use of the light source module, the lens module and the detector module, so that the light beam emitted by the working light source can be incident on the detector device after passing through the lens to be tested, and then the detector device is used to detect and analyze the light beam after passing through the lens to be tested, forming a modular test optical path, realizing full coverage of wide-band, small-size and high-compatibility test requirements, breaking through the shackles of the traditional test mode, forming an intelligent closed loop of design-test-production, and providing efficient and accurate technical support for the research and development of high-speed optical modules.

[0021] The other technical solutions included in the present application can also achieve the following technical effects:

[0022] The probe support of the present application can be used to support different probe devices, so that different waveband lasers, different coupling mirror performance tests, and coupling efficiency tests can be performed using the same test platform, the problem of excessive reliance on customer system test results during new product development is solved, the cost and debugging difficulty problems of needing different system to build different test platforms are solved, at the same time, the process development and optimization effect monitoring problems are solved, so as to accelerate the product development cycle, reduce the production cost, and improve the stability and quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 A lens performance test device schematic diagram in the embodiment of the present application;

[0025] Figure 2 A light source module schematic diagram in the embodiment of the present application;

[0026] Figure 3 A working light source internal structure schematic diagram in the embodiment of the present application;

[0027] Figure 4 A lens module schematic diagram in the embodiment of the present application;

[0028] Figure 5 A lens clamping component schematic diagram in the embodiment of the present application;

[0029] Figure 6 A Figure 5 A-A sectional view in the embodiment of the present application;

[0030] Figure 7 A light source module and lens module adhering state internal structure schematic diagram in the embodiment of the present application;

[0031] Figure 8 A Figure 7 An enlarged view of A in the embodiment of the present application;

[0032] Figure 9 A probe module schematic diagram in the embodiment of the present application;

[0033] Figure 10 A lens performance test device schematic diagram in the embodiment of the present application;

[0034] Figure 11Figure 1 is a schematic diagram of a detector module installing different detector devices in an embodiment of the present application;

[0035] Figure 12 Figure 2 is a schematic diagram of a single-mode fiber installation in an embodiment of the present application;

[0036] 1, light source module; 2, lens module; 3, detector module; 4, light source angle rotating table; 5, first four-axis platform; 6, second four-axis platform; 7, slide rail; 8, base;

[0037] 11, working light source; 12, light source support; 13, indicating light source;

[0038] 111, light source fixing cylinder; 112, light source fixing cover; 113, LD light source; 114, power supply socket; 115, power supply wire; 116, power board;

[0039] 1131, theoretical zero return surface;

[0040] 21, lens support; 22, fixing frame; 23, lens clamping component;

[0041] 231, second clamping piece; 232, first clamping piece; 233, lens to be measured;

[0042] 2311, first alignment hole;

[0043] 2331, front end zero return surface; 2332, rear end zero return surface;

[0044] 31, beam analyzer; 32, detector support; 33, single-mode fiber clamping piece; 34, fiber adapter; 35, single-mode fiber; 36, optical power meter;

[0045] 321, second alignment hole. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] The present application aims to provide a lens performance testing device to solve the problems in the prior art, and to form a modular testing light path by the combination of a light source module, a lens module and a detector module, to realize full coverage of wide-band, small-size and high-compatibility testing requirements, to break through the shackles of traditional testing modes, to form an intelligent closed loop of design-testing-production, and to provide efficient and accurate technical support for the research and development of high-speed optical modules.

[0048] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] The LD light source 113 mentioned in this invention refers to a laser diode, which is a light source that generates laser light through electrical excitation.

[0050] The lens 233 to be tested in this invention can be an SI lens, i.e., a silicon lens.

[0051] like Figures 1-12 As shown, this invention provides a lens performance testing device, including a light source module 1, a lens module 2, and a detector module 3. The light source module 1 includes a working light source 11 and a light source support 12. The working light source 11 is mounted on the light source support 12, which primarily defines and supports the position of the working light source 11 so that the light beam emitted by the working light source 11 can illuminate the lens 233 under test. The structural form of the light source support 12 is not specifically constrained; it can be a vertical frame or an L-shaped frame, etc. The lens module 2 includes a lens clamping component 23 and a lens support 21. The lens clamping component 23 is used to clamp the lens 233 under test and is mounted on the lens support 21. The lens support 21 is used to determine the position of the lens clamping component 23 and the clamped lens 233. The detector module 3 includes a detector device and a detector support 32. The detector device is mounted on the detector support 32. The detector device is not limited to a single device; different detector devices can be selected as needed. The detector support 32 supports and defines the position of the detector device. After the light source module 1, lens module 2 and detector module 3 are assembled and installed (for example, all installed on the same base 8), the light beam emitted by the working light source 11 passes through the lens under test 233 and is incident on the detector device. The detector device is used to detect and analyze the light beam after passing through the lens under test 233, so as to realize the test of the lens under test 233.

[0052] This invention combines a light source module 1, a lens module 2, and a detector module 3 to enable the light beam emitted by the working light source 11 to pass through the lens 233 under test and then be incident on the detector device. The detector device then detects and analyzes the light beam after passing through the lens 233 under test, forming a modular test optical path. This achieves full coverage of wide-band, small-size, and highly compatible testing requirements, breaking through the constraints of traditional testing modes and forming an intelligent closed loop of design-testing-production. This provides efficient and accurate technical support for the research and development of high-speed optical modules.

[0053] In one embodiment, combined with Figure 1 , Figure 2 , Figure 5 ,Figure 9 and Figure 10 As shown, the light source module 1 also includes an indicator light source 13, which is mounted on the light source bracket 12. The lens module 2 is provided with a first alignment hole 2311, which can be located on the lens bracket 21 or on the lens clamping component 23. In this example, it is located on the lens clamping component 23 to directly indicate and calibrate the position of the lens 233 under test. The detector module 3 is provided with a second alignment hole 321, which is located on the detector bracket 32. This can be achieved by separately setting a vertical positioning block (with the second alignment hole 321 on the positioning block). Since the indicator light source 13 can emit visible light, it can be used to assist in adjusting the illumination position of the working light source 11, so that the working light source 11 can illuminate the lens 233 under test. Alternatively, the visible light emitted by the indicator light source 13 can pass through the first alignment hole 2311 and the second alignment hole 321 by adjusting the light source bracket 12, the lens bracket 21, and / or the detector bracket 32, ensuring the parallelism of the light source module 1, the lens module 2, and the detector module 3.

[0054] The indicator light source 13 is a visible light laser light source that can emit a beam of light visible to the naked eye. The indicator light source 13 has two main functions: first, to assist in the alignment of the working light source 11 in the infrared non-visible working band such as 1310nm and 1550nm with the lens 233 under test; second, by adjusting the light source bracket 12, lens bracket 21 and / or detector bracket 32, the beam of light emitted by the indicator light source 13 can pass through the first alignment hole 2311 on the lens module 2 and the second alignment hole 321 on the detector module 3, ensuring the parallelism of the installation of the light source module 1, lens module 2 and detector module 3, and reducing the test error caused by the assembly error of the test system.

[0055] In one implementation, such as Figure 1 , Figure 2 and Figure 10 As shown, the light source module 1 also includes a light source angle rotating platform 4, which includes a fixed part and a rotating part. The rotating part is rotatably mounted on the fixed part, and the fixed part can be mounted on the base 8 or the table surface. The light source bracket 12 is mounted on the rotating part. When the rotating part rotates relative to the fixed part, the rotating part can realize the pitch adjustment of the light source module 1, thereby adjusting the angle of the working light source 11 or the indicator light source 13.

[0056] In one implementation, such as Figure 2 and Figure 3As shown, the working light source 11 includes a light source fixing cylinder 111, a light source fixing cover 112, an LD light source 113, and a power board 116. The light source fixing cylinder 111 can be a hollow cylindrical structure, facilitating the installation of power supply wires 115 and power supply sockets 114 and other components inside. The light source fixing cylinder 111 is installed on the light source support 12, and the end of the light source fixing cylinder 111 can be provided with a flange structure for facilitating screw or bolt connection. The light source fixing cover 112 is installed on one end of the light source fixing cylinder 111 and clamps the LD light source 113 on one end of the light source fixing cylinder 111, and the installation and fixation of the LD light source 113 are realized through the cooperation of the light source fixing cover 112 and the light source fixing cylinder 111. The LD light source 113 is detachably connected to the power supply socket 114, the power supply socket 114 is connected to the power board 116 through the power supply wires 115, and the power board 116 is located at the other end of the light source fixing cylinder 111 away from the LD light source 113, facilitating the connection of the power board 116 and the power supply, and the above-mentioned connection does not affect the test process. The light source fixing cylinder 111 can adopt a cylinder, and the other end of the light source fixing cylinder 111 where the LD light source 113 is installed can extend a certain length, facilitating the fitting of the lens clamping component 23, so as to better adjust the distance between the working light source 11 and the lens to be tested 233. The above-mentioned setting mode of the working light source 11 can facilitate the replacement of the LD light source 113, facilitate the quick replacement test of LD light sources 113 (or LD lasers) of different wave bands, and reduce the test cost of different wave band systems.

[0057] In an embodiment, as shown in Figure 5 and Figure 6 shown, the lens clamping component 23 includes a first clamping piece 232 and a second clamping piece 231 for buckling connection. The first clamping piece 232 is provided with a first mounting groove on the side close to the second clamping piece 231, the first mounting groove can accommodate one side of the lens to be tested 233, and the first mounting groove has a first through hole for the light beam to pass through; the second clamping piece 231 is provided with a second mounting groove on the side close to the first clamping piece 232, the second mounting groove can accommodate the other side of the lens to be tested 233, and the second mounting groove has a second through hole for the light beam to pass through. The first mounting groove and the second mounting groove are buckled to form a clamping groove for clamping the lens to be tested 233, and the lens to be tested 233 can be fixed by using the clamping groove. Generally, the edge of the lens to be tested 233 is rectangular, and the middle part is a convex arc surface (main light transmission area). The size of the first through hole and the second through hole should match the arc surface to avoid damage to the arc surface, and the first mounting groove and the second mounting groove can be provided as a rectangular groove structure adapted to the rectangle. In addition, the first clamping piece 232 and the second clamping piece 231 can be made of high-hardness Peek material (Polyetheretherketone, a high-performance special engineering plastic), to ensure that the surface of the lens to be tested 233 will not be scratched during installation.

[0058] In order to facilitate the installation of the lens clamping part 23, a fixed frame 22 can be further arranged on the basis of the lens holder 21, the fixed frame 22 is vertically arranged and has a vertical surface on which the second clamping part 231 is arranged, the second clamping part 231 and the fixed frame 22 can be positioned by a pin shaft and are fixed by magnetic attraction, and the flatness of the contact surface (the aforementioned vertical surface) of the second clamping part 231 and the fixed frame 22 is required to be less than 5 microns to ensure the installation accuracy. In addition, the second clamping part 231 can be provided with a limiting groove for clamping the first clamping part 232, which facilitates the installation and positioning of the two, and the first clamping part 232 and the second clamping part 231 are fixed by magnetic attraction, which can improve the convenience of installation.

[0059] In an embodiment, in order to clearly define the actual working distance difference of the actual processed product, the light source module 1 and the lens module 2 in the test platform of the present example are designed to be zeroed, that is, the distance between the light source output surface and the lens surface is zero. This design is to complete the test of the working distance of the lens to be tested 233, but in combination with the performance characteristics of the actual product, the zero design is not truly zero contact, but has a certain value. When testing, this data can be used as a test point.

[0060] As shown in Figures 5-8 The third installation groove is arranged on the side of the first clamping part 232 away from the first installation groove, and the inner bottom surface of the third installation groove can be completely matched with the end surface (the light source output surface of the LD light source 113) of the working light source 11, so as to serve as the theoretical zero surface 1131 of the working light source 11 and the lens to be tested 233. The inner bottom surface of the first installation groove can be matched with the front surface of the lens to be tested 233, so as to serve as the front zero surface 2331 of the lens to be tested 233. The inner bottom surface of the second installation groove can be matched with the rear surface of the lens to be tested 233, so as to serve as the rear zero surface 2332 of the lens to be tested 233. The design of the front zero surface 2331 and the rear zero surface 2332 can effectively determine the actual zero surface of the lens to be tested 233, and can ensure the accuracy of the test process.

[0061] When the to-be-tested lens 233 (for example, a coupling lens, an SI lens) is processed, due to the limitation of the process level, there is a certain difference between the actual processed product and the design theoretical value, and the working distance needs to be adjusted in the test, the actual product is found in the best state, and the difference between the actual working distance and the design working theoretical value is analyzed, and the actual test value needs a zero point. Due to the size of the lens clamping part 23 and the optical distance of the to-be-tested lens 233, it is impossible to achieve zero contact between the front surface of the to-be-tested lens 233 and the light emitting surface of the working light source 11. The present application carries out zero design of front and back focal lengths. In the example, the front surface is a zero design with a theoretical value of 0.3 mm (the distance between the front zero surface 2331 and the light emitting surface of the working light source 11). In practice, the actual processing size is used as the reference. The zero design of the back surface of the to-be-tested lens 233 and the entrance surface of the detector device is 1.02 mm (the distance between the back zero surface 2332 and the light emitting surface of the working light source 11). On the basis of the above zero design, the example can test the performance of the to-be-tested lens 233 with a front focal length ≥0.3 mm and a back focal length ≥1.02 mm.

[0062] According to the performance requirements of the to-be-tested lens 233, the related processing precision requirements of the test platform are as follows:

[0063] 1) The moving precision of the to-be-tested lens 233 in X, Y and Z directions is less than 5 μm, and the angle is less than 0.05°.

[0064] 2) The effective clear aperture precision of the to-be-tested lens 233 is less than 10 μm, which ensures the effective clamping of the lens clamping part 23 to the to-be-tested lens 233.

[0065] 3) The positioning precision of the beam analyzer 31 and the single-mode optical fiber clamping part 33 is less than 20 μm.

[0066] 4) The positioning precision of the indicating light source 13 and the working light source 11 is less than 20 μm.

[0067] 5) The positioning precision of the test platform zero is less than 10 μm.

[0068] In an embodiment, as Figure 1 and Figure 10As shown, the detector device includes a beam analyzer 31 and a single-mode optical fiber 35. Different tests can be achieved by installing the beam analyzer 31 and the single-mode optical fiber 35 on the detector support 32 respectively. When the beam analyzer 31 is used, the LD light source 113 emits a Gaussian beam, which is collimated after passing through the lens to be tested 233 (for example, a coupling mirror to be tested) and is incident into the beam analyzer 31. The beam analyzer 31 analyzes and displays the collimation and spot size of the collimated beam. When the beam analyzer 31 is selected, the size of the spot to be tested needs to be considered. Conventionally, the size of the spot to be tested needs to be greater than 10 times the pixel size of the beam analyzer 31. When the single-mode optical fiber 35 is used, the LD light source 113 emits a Gaussian beam, which is focused after passing through the lens to be tested 233 (for example, a coupling mirror to be tested) and is incident into the single-mode optical fiber 35. The single-mode optical fiber 35 is connected to the optical power meter 36, and the coupling efficiency of the coupling mirror to be tested is tested.

[0069] It should be noted that, for a single-mode coupling mirror with a focused spot of about 9 μm, a conventional beam analyzer 31 cannot be used for testing due to the limitation of the pixel. Therefore, a suitable beam analyzer 31 needs to be selected for testing. Specifically, the following methods can be used: 1) a high-resolution (less than 0.1 μm) beam analyzer 31 is selected for spot testing; 2) a high-magnification objective lens is used in combination with a low-resolution beam analyzer 31 for spot testing; and 3) direct coupling testing (i.e., the testing scheme of using the single-mode optical fiber 35 and the optical power meter 36). The first two schemes have relatively high costs and cannot guarantee the testing accuracy. Therefore, the third scheme, i.e., the direct coupling testing method, is preferred.

[0070] In an embodiment, as shown in Figure 11 and Figure 12 The detector module 3 further includes a single-mode optical fiber holder 33 and an optical fiber adapter 34. The single-mode optical fiber 35 can be installed on the optical fiber adapter 34. The optical fiber adapter 34 has a through hole for accommodating the single-mode optical fiber 35 and can be fixed in position. In addition, the optical fiber adapter 34 has an opening for the light beam to enter the through hole. The optical fiber adapter 34 is installed on the single-mode optical fiber holder 33, and the single-mode optical fiber holder 33 is installed on the detector support 32. After the optical fiber adapter 34 is installed on the single-mode optical fiber holder 33, the light beam emitted by the working light source 11 can enter the single-mode optical fiber 35, and the testing is completed.

[0071] In an embodiment, as shown in Figure 1 and Figure 10 The base 8 and the slide rail 7 are further included. The slide rail 7 is installed on the base 8. The lens support 21 and the detector support 32 are slidingly installed on the slide rail 7. The slide rail 7 is arranged to facilitate adjustment of the relative distance between the lens support 21 and the detector support 32, and thus facilitates adjustment of the relative distance between the working light source 11 and the detector device.

[0072] In an embodiment, as shown in Figure 1 、 Figure 4 、 Figure 9 、 Figure 10 and Figure 11 , the lens module 2 further comprises a first four-axis platform 5, the lens holder 21 is installed at the moving end of the first four-axis platform 5, and the fixed end of the first four-axis platform 5 is slidingly installed on the slide rail 7. The detector module 3 further comprises a second four-axis platform 6, the detector holder 32 is installed at the moving end of the second four-axis platform 6, and the fixed end of the second four-axis platform 6 is slidingly installed on the slide rail 7. The first four-axis platform 5 and the second four-axis platform 6 can adopt the same or different four-axis platforms, and the four-axis platforms adopted have three-axis movement of X-axis, Y-axis and Z-axis and rotation of Z-axis, which are common components in the field, and the specific structure will not be described here. Through the setting of the first four-axis platform 5 and the second four-axis platform 6, the moving accuracy and convenience of the lens module 2 and the detector module 3 can be improved.

[0073] The principles and embodiments of the present application are described by applying specific examples, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific embodiments and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A lens performance testing device, characterized in that, include: A light source module, comprising a working light source and a light source bracket, wherein the working light source is mounted on the light source bracket; A lens module, comprising a lens clamping component and a lens bracket, wherein the lens clamping component is used to clamp the lens to be tested and is mounted on the lens bracket; And a detector module, the detector module including a detector device and a detector bracket, the detector device being mounted on the detector bracket; The light beam emitted by the working light source passes through the lens under test and then enters the detector device. The detector device is used to detect and analyze the light beam after passing through the lens under test, thereby realizing the testing of the lens under test. It also includes a base and a slide rail, the slide rail being mounted on the base, and the lens bracket and the detector bracket being slidably mounted on the slide rail; The light source bracket adopts an L-shaped bracket, with the vertical support arm of the L-shaped bracket located on one side of the slide rail and the horizontal support arm of the L-shaped bracket spanning above the slide rail; the light source module also includes a light source angle rotation table, which includes a fixed part and a rotating part, with the rotating part rotatably mounted on the fixed part and the light source bracket mounted on the rotating part, and the rotating part used to realize the pitch adjustment of the light source module; The light source module also includes an indicator light source, which is mounted on the light source bracket; Both the working light source and the indicator light source are mounted on the horizontal support arm of the L-shaped bracket; The lens clamping component includes a first clamping member and a second clamping member for fastening connection. The first clamping member has a first mounting groove on the side near the second clamping member, and the second clamping member has a second mounting groove on the side near the first clamping member. The first mounting groove and the second mounting groove fasten together to form a clamping groove for clamping the lens to be tested. A third mounting groove is provided on the side of the first clamping member away from the first mounting groove. The inner bottom surface of the third mounting groove serves as the theoretical zeroing surface of the working light source and the lens under test. The inner bottom surface of the first mounting groove serves as the front zeroing surface of the lens under test, and the inner bottom surface of the second mounting groove serves as the rear zeroing surface of the lens under test.

2. The lens performance testing device according to claim 1, characterized in that: The lens module is provided with a first alignment hole, the detector module is provided with a second alignment hole, and the indicator light source is used to assist in adjusting the illumination position of the working light source. Alternatively, by adjusting the light source bracket, the lens bracket, and / or the detector bracket, the visible light emitted by the indicator light source can pass through the first alignment hole and the second alignment hole, ensuring the parallelism of the installation of the light source module, the lens module, and the detector module.

3. The lens performance testing device according to claim 1, characterized in that: The working light source includes a light source fixing cylinder, a light source fixing cover, an LD light source, and a power board. The light source fixing cylinder is installed on the light source bracket. The light source fixing cover is used to install the LD light source at one end of the light source fixing cylinder. The LD light source is connected to the power board through a power supply line. The power board is located at the other end of the light source fixing cylinder away from the LD light source.

4. The lens performance testing device according to claim 1, characterized in that: The detector equipment includes a beam analyzer and a single-mode optical fiber.

5. The lens performance testing device according to claim 4, characterized in that: The detector module further includes a single-mode fiber holder and a fiber adapter. The single-mode fiber is mounted on the fiber adapter, the fiber adapter is mounted on the single-mode fiber holder, and the single-mode fiber holder is mounted on the detector bracket. The fiber adapter has an opening for the light beam to enter.

6. The lens performance testing device according to claim 1, characterized in that: The lens module further includes a first four-axis platform, the lens bracket is mounted on the movable end of the first four-axis platform, and the fixed end of the first four-axis platform is slidably mounted on the slide rail; the detector module further includes a second four-axis platform, the detector bracket is mounted on the movable end of the second four-axis platform, and the fixed end of the second four-axis platform is slidably mounted on the slide rail.

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