Test assembly and prism testing apparatus

Abstract

This utility model discloses a testing component and a prism testing device, belonging to the field of product testing technology. The testing component includes a fixed base, a sensing component, and a moving stage. The fixed base has a mounting groove for mounting a bracket. The opening of the mounting groove is arranged along a second direction and exposes the light entrance. A light-transmitting hole is provided on the inner wall of the mounting groove along the second direction, and the light-transmitting hole is arranged opposite to the light-exit port along the second direction. The sensing component is located on the side of the fixed base with the light-transmitting hole, and includes a sensor, which is arranged opposite to the light-transmitting hole along the second direction. The moving stage is located on the side of the fixed base away from the sensing component and spaced apart from the fixed base. A camera is mounted on the side of the moving stage facing the fixed base. The moving stage can move the camera along a first direction and / or along a second direction to make the camera coaxial with the light entrance. This utility model reduces the impact of installation and processing errors on testing accuracy, improving the accuracy and reliability of the test.

Description

Technical Field

[0001] This utility model relates to the field of product testing technology, and in particular to a testing component and a prism testing device. Background Technology

[0002] In related technologies, mass-produced prisms are sequentially placed into specialized testing devices after processing to evaluate their optical performance. However, it is difficult to guarantee that the prisms are positioned perfectly each time they are placed in the testing device. Furthermore, different prisms inevitably have certain processing errors. These positional and processing errors can cause the optical paths between the prism and the camera / sensor in the testing device to not be strictly aligned, thus reducing testing accuracy. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a testing component that can reduce the impact of errors on testing, thereby improving the accuracy of testing.

[0004] This utility model also proposes a prism testing device that includes the above-mentioned testing components.

[0005] According to a first aspect embodiment of the present invention, a test assembly is applied to a bracket in which a prism is internally mounted. The bracket has a light inlet and a light outlet respectively, offset along a first direction, on opposite sides. The light inlet exposes the light-incident surface of the prism, and the light outlet exposes the light-exit surface of the prism. The test assembly includes: a fixed base, a sensing component, and a movable stage. The fixed base has a mounting groove for mounting the bracket. The opening of the mounting groove is arranged along a second direction and exposes the light inlet. The second direction forms an angle with the first direction. The inner wall of the light-transmitting component is provided with a light-transmitting hole, which is arranged opposite to the light-exiting port along the second direction. The sensing component is located on the side of the fixed base where the light-transmitting hole is located. The sensing component includes a sensor, which is arranged opposite to the light-transmitting hole along the second direction. The moving stage is located on the side of the fixed base away from the sensing component and is spaced apart from the fixed base. A camera is mounted on the side of the moving stage facing the fixed base. The moving stage is configured to drive the camera to move along the first direction and / or along the second direction so that the camera is coaxial with the light-in port.

[0006] The test component according to the embodiments of this utility model has at least the following beneficial effects:

[0007] The test component of this utility model, by setting a mounting slot on the fixed base, makes the replacement of the bracket easy and convenient, greatly improving the efficiency of testing a large number of brackets sequentially. By setting a light-transmitting hole, the light outlet of the bracket can be positioned opposite the sensor, forming a precisely aligned optical path. Furthermore, the slot opening is positioned facing the moving stage, and the moving stage moves the camera along a first direction and / or along a second direction, thereby achieving coaxial alignment between the camera and the light inlet. Based on this, after each bracket is installed, the position of the camera can be adjusted specifically by the moving stage, ensuring precise alignment between the light inlet, the light inlet surface, and the camera, reducing the impact of installation and processing errors on test accuracy, and thus improving the accuracy and reliability of camera testing.

[0008] According to some embodiments of the present invention, the fixed base is provided with a positioning boss on the side facing the movable platform. The positioning boss is arranged circumferentially along the opening of the mounting groove and protrudes from the fixed base in the second direction. The movable platform is provided with a positioning enclosure on the side facing the fixed base. The positioning enclosure protrudes from the movable platform in the second direction and defines an avoidance groove with the movable platform. The positioning boss passes through the avoidance groove. On the projection plane perpendicular to the second direction, the projection of the positioning boss is located within the outer contour line of the projection of the avoidance groove.

[0009] According to some embodiments of the present invention, the second direction is the up-down direction, the groove of the mounting groove is set facing upward, the outer peripheral wall of the bracket is provided with an outwardly protruding edge, the inner peripheral wall of the mounting groove is provided with a stepped portion, and the stepped portion is connected to the protruding edge to support the bracket.

[0010] According to some embodiments of the present invention, the stepped portion is constructed as a rib, the rib protruding from the inner peripheral wall of the mounting groove and arranged along the circumference of the mounting groove, the upper end face of the rib is a plane, and the protruding edge overlaps the upper end face of the rib.

[0011] According to some embodiments of the present invention, the inner peripheral wall of the mounting groove is spaced apart from the outer peripheral wall of the bracket, and the distance between the inner peripheral wall of the mounting groove and the outer peripheral wall of the bracket is W, which satisfies: 0.09mm≤W≤0.13mm.

[0012] According to some embodiments of the present invention, the second direction is the up-down direction, the sensing component is disposed on the lower side of the fixed base, the sensing component further includes a substrate and a mounting base, the sensor is disposed on the substrate, the substrate is fixed to the upper side of the mounting base, and the fixed base covers the upper side of the mounting base and abuts against the upper end surface of the substrate.

[0013] According to some embodiments of the present invention, the camera includes a body and a connecting plate. The connecting plate is fixedly connected to the side of the mobile platform facing the fixed base, and the body is connected to the side of the connecting plate facing away from the mobile platform.

[0014] The prism testing device according to a second aspect embodiment of the present invention includes the testing components described in the first aspect embodiment.

[0015] The prism testing device according to the embodiments of this utility model has at least the following beneficial effects:

[0016] The prism testing equipment of this embodiment adopts the testing components of the first aspect embodiment. By setting a mounting slot on the fixed base, the replacement of the bracket becomes easy and convenient, greatly improving the efficiency when testing a large number of brackets sequentially. By setting a light-transmitting hole, the light outlet of the bracket can be positioned opposite the sensor, forming a precisely aligned optical path. Furthermore, the slot opening of the mounting slot is positioned facing the moving stage. The moving stage drives the camera to move along the first direction and / or along the second direction, thereby achieving coaxial alignment between the camera and the light inlet. Based on this, after each bracket is installed, the position of the camera can be adjusted specifically by the moving stage, ensuring precise alignment between the light inlet, the light inlet surface, and the camera. This reduces the impact of installation and processing errors on the testing accuracy, thereby improving the testing accuracy and reliability of the prism testing equipment.

[0017] According to some embodiments of the present invention, the prism testing device further includes a moving mechanism, which is used to drive the moving stage to move along the first direction and / or along the second direction.

[0018] According to some embodiments of the present invention, the moving mechanism includes a test base, a connecting arm, and a driving device. The fixed base and the sensing component are fixedly connected to the test base. The driving device is located on one side of the fixed base and connected to the connecting arm. The connecting arm is connected to the moving stage. The driving device is used to drive the connecting arm to move the moving stage.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a test component according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0023] Figure 3 This is an exploded view of a test component according to an embodiment of the present invention;

[0024] Figure 4 This is an exploded view of the fixing base and bracket according to an embodiment of the present invention;

[0025] Figure 5 for Figure 2 A magnified view of a section at point B in the middle;

[0026] Figure 6 This is a schematic diagram of the structure of a prism testing device according to an embodiment of the present invention.

[0027] Icon labels:

[0028] Prism testing equipment 10;

[0029] Test component 1000; moving mechanism 2000;

[0030] 101; prism; light inlet 103; light outlet 104; light inlet surface 105; light outlet surface 106; convex edge 107;

[0031] 100 fixed base; 110 mounting groove; 111 stepped portion; 112 protruding rib; 120 light-transmitting hole; 130 positioning boss;

[0032] Sensing component 200; substrate 210; sensor 211; mounting base 220; circuit board 230; base 240; seal 250;

[0033] 300 mobile platform; 310 positioning enclosure; 311 clearance groove;

[0034] Camera 400; Main body 410; Connecting board 420;

[0035] Test stand 500; connecting arm 600; drive unit 700. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] In related technologies, mass-produced prisms are sequentially placed into specialized testing devices after processing to evaluate their optical performance. However, it is difficult to guarantee that the prisms are perfectly aligned each time they are placed in the testing device. In particular, the incident and exit surfaces of the prisms are misaligned, further increasing the difficulty of aligning the optical paths. Furthermore, different prisms inevitably have certain processing errors. These positional and processing errors prevent the optical paths between the prisms and the cameras and sensors in the testing device from being strictly aligned, thus reducing testing accuracy.

[0041] To address the aforementioned problems, some embodiments of this utility model propose a test component 1000 suitable for prism testing equipment 10. This component reduces the impact of errors on the test, thereby improving the test accuracy. See details below. Figures 1 to 6 The test component 1000 is described below.

[0042] Reference Figure 1 and Figure 2 As shown, in this embodiment of the present invention, the test component 1000 includes: a fixed base 100, a sensing component 200, and a moving stage 300. In one example, the second direction is the vertical direction, and the moving stage 300, the fixed base 100, and the sensing component 200 are arranged sequentially from top to bottom. (Combined with...) Figure 2 and Figure 5It is understood that the test component 1000 of this utility model embodiment is applied to a bracket 101 in which a prism 102 is installed. The bracket 101 has a light inlet 103 and a light outlet 104 respectively on opposite sides, which are staggered along the first direction. The light inlet 103 can expose the light inlet surface 105 of the prism 102, and the light outlet 104 can expose the light outlet surface 106 of the prism 102.

[0043] Specifically, in this embodiment of the invention, the upper side of the bracket 101 is provided with a cylindrical light-entry hole, through which the camera 400 can pass. A light-entry port 103 is formed at the top of the light-entry hole. Therefore, when the camera 400 passes through the light-entry hole, the camera 400 and the light-entry surface 105 can achieve optical path alignment. The light-emitting surface 106 of the prism 102 and the light-emitting port 104 are coaxially arranged; in other words, the light-emitting surface 106 and the light-emitting port 104 are misaligned with the camera 400.

[0044] To achieve alignment of camera 400 with the light-incident surface 105 and sensor 211 with the light-outceasing surface 106, refer to... Figure 3 and Figure 4 As shown, in this embodiment of the present invention, the fixing base 100 is provided with a mounting groove 110 for mounting the bracket 101. The opening of the mounting groove 110 is arranged along the second direction and can expose the light inlet 103. Specifically, the opening of the mounting groove 110 is arranged upward, therefore, the bracket 101 is inserted into the mounting groove 110 from top to bottom. The second direction is set at an angle to the first direction. It should be noted that in this embodiment, the first direction is any direction on the horizontal plane, and the second direction is the vertical direction.

[0045] Continue to refer to Figure 3 and Figure 4 As shown, in this embodiment of the present invention, the inner wall of the mounting groove 110 along the second direction is provided with a light-transmitting hole 120, and the light-transmitting hole 120 and the light-emitting port 104 are arranged opposite to each other along the second direction. Specifically, the light-transmitting hole 120 penetrates the bottom wall of the mounting groove 110 in the vertical direction. Since the light-emitting surface 106 of the prism 102 is coaxially arranged with the light-emitting port 104, when the bracket 101 is installed in the mounting groove 110, the constraint of the mounting groove 110 on the bracket 101 can make the light-emitting surface 106 aligned with the light-transmitting hole 120.

[0046] Based on this, in this embodiment of the invention, the sensing component 200 is disposed on the side of the fixing base 100 where the light-transmitting hole 120 is provided. The sensing component 200 includes a sensor 211, which is disposed opposite to the light-transmitting hole 120 along a second direction. In other words, the sensor 211 and the light-emitting surface 106 are respectively located at both ends of the light-transmitting hole 120, so the sensor 211 and the light-emitting surface 106 can form a precisely aligned optical path.

[0047] Continue to refer to Figure 3 and Figure 4 As shown, in this embodiment of the invention, the movable stage 300 is located on the side of the fixed base 100 away from the sensing component 200, that is, the movable stage 300 is located on the upper side of the fixed base 100 and is spaced apart from the fixed base 100. In this embodiment, the movable stage 300 and the fixed base 100 are relatively movable; in other words, the movable stage 300 can move relative to the fixed base 100, thereby compensating for installation and processing errors of the bracket 101. A camera 400 is mounted on the side of the movable stage 300 facing the fixed base 100. The movable stage 300 can drive the camera 400 to move along a first direction and / or along a second direction until the camera 400 is coaxial with the light entrance 103, thereby achieving alignment between the camera 400 and the light entrance surface 105.

[0048] The test component 1000 of this utility model makes it easy and convenient to replace the bracket 101 by setting the mounting slot 110 in the fixed base 100, which greatly improves the efficiency of testing a large number of brackets 101 in sequence. By setting the light-transmitting hole 120, the light outlet 104 of the bracket 101 can be set opposite to the sensor 211 to form a precisely aligned light path. Then, the slot of the mounting slot 110 is set facing the moving stage 300. With the help of the moving stage 300, the camera 400 is moved along the first direction and / or along the second direction, thereby achieving coaxial alignment between the camera 400 and the light inlet 103. Based on this, after each bracket 101 is installed, the position of the camera 400 can be adjusted specifically by the moving stage 300, ensuring the precise alignment of the light inlet 103, the light inlet surface 105 and the camera 400, reducing the impact of installation error and processing error on the test accuracy, and thus improving the accuracy and reliability of the camera 400 test.

[0049] Reference Figure 2 and Figure 3 As shown in this embodiment of the present invention, a positioning boss 130 is provided on the side of the fixed base 100 facing the movable stage 300. The boss is arranged circumferentially along the groove opening of the mounting groove 110 and protrudes from the fixed base 100 in the second direction. A positioning enclosure 310 is provided on the side of the movable stage 300 facing the fixed base 100. The positioning enclosure 310 protrudes from the movable stage 300 in the second direction and defines an avoidance groove 311 with the movable stage 300. The positioning boss 130 passes through the avoidance groove 311. On the projection plane perpendicular to the second direction, the projection of the positioning boss 130 is located within the outer contour line of the projection of the avoidance groove 311.

[0050] Specifically, in combination Figure 2It is understood that the lower surface of the moving stage 300 protrudes downward to form an annular positioning plate 310. The positioning plate 310 and the lower surface of the moving stage 300 together form a downward-facing clearance groove 311, which is used to accommodate the insertion portion of the positioning boss 130. Correspondingly, the positioning boss 130 protrudes upward on the upper surface of the fixed base 100, and is arranged around the mounting groove 110 and maintains a certain distance from the bracket 101 installed in the mounting groove 110.

[0051] In this embodiment of the invention, the lateral dimension of the clearance groove 311 is larger than the dimension of the positioning boss 130, thereby providing conditions for the lateral movement of the moving platform 300. It is understood that in this embodiment, the cooperation between the positioning boss 130 and the positioning enclosure 310 can achieve the initial positioning of the moving platform 300. After the initial positioning of the moving platform 300 is completed, a portion of the positioning boss 130 remains embedded inside the clearance groove 311. Therefore, as the moving platform 300 moves along the first direction, the cooperation between the two achieves a continuous positioning function during the adjustment process.

[0052] Reference Figure 3 and Figure 4 As shown, in this embodiment of the present invention, the second direction is the vertical direction. Specifically, the extension direction of the mounting groove 110 is consistent with the direction of gravity. This can be achieved by using a vertically arranged mounting groove 110 structure, utilizing gravity to allow the bracket 101 to naturally sink to a preset position. The opening of the mounting groove 110 faces upwards, facilitating the placement of the bracket 101 from top to bottom. The outer peripheral wall of the bracket 101 has an outwardly protruding edge 107. Specifically, the protruding edge 107 protrudes laterally from the outer peripheral wall of the bracket 101 and can be an annular protrusion structure. Correspondingly, the inner peripheral wall of the mounting groove 110 has a stepped portion 111, which connects to the protruding edge 107. The stepped portion 111 forms a supporting surface for the protruding edge 107, thereby supporting the bracket 101. In one example, the stepped portion 111 is formed by creating a recess on the inner peripheral wall of the mounting groove 110.

[0053] It is understood that, in this embodiment of the present invention, when assembling the bracket 101, it is only necessary to place the bracket 101 into the mounting groove 110 from top to bottom. The stepped portion 111 can precisely engage with the protruding edge 107, thereby achieving stable support for the bracket 101. This significantly reduces the installation difficulty of the bracket 101 and makes the disassembly and installation process of the bracket 101 more efficient and faster. When continuously testing a large batch of prisms 102, the time required to replace the bracket 101 is thus significantly shortened, effectively improving overall work efficiency.

[0054] Specifically, refer to Figure 4 and Figure 5As shown, in this embodiment of the present invention, the stepped portion 111 is constructed as a rib 112, which protrudes from the inner peripheral wall of the mounting groove 110 and is arranged circumferentially along the mounting groove 110. Specifically, in this embodiment, the rib 112 is an annular protrusion structure protruding from the inner peripheral wall of the stepped portion 111, wherein the upper end face of the rib 112 is a plane, and the protruding edge 107 overlaps the upper end face of the rib 112.

[0055] Reference Figure 5 As shown in this embodiment of the invention, the inner peripheral wall of the mounting groove 110 and the outer peripheral wall of the bracket 101 are spaced apart, forming an annular gap between them. Specifically, when the gap is too small, assembly difficulties may arise between the bracket 101 and the mounting groove 110 due to processing errors; when the gap is too large, the bracket 101 may shift laterally within the mounting groove 110, causing the light-incident surface 105 of the prism 102 to deviate from the optical axis of the camera 400. Based on this, in this embodiment, the distance between the inner peripheral wall of the mounting groove 110 and the outer peripheral wall of the bracket 101 is W, satisfying: 0.09mm≤W≤0.13mm. By reasonably limiting the range of W, it is possible to allow the bracket 101 to be smoothly installed into the mounting groove 110 even when there are processing errors, while the upper limit constraint of the gap prevents the position of the prism 102 from shifting, thereby ensuring the optical path alignment accuracy.

[0056] Reference Figure 3 and Figure 5 As shown in this embodiment of the invention, the second direction is the vertical direction. The sensing component 200 is disposed on the lower side of the fixing base 100. The sensing component 200 also includes a substrate 210 and a mounting base 220. The sensor 211 is disposed on the substrate 210. The substrate 210 is fixed to the upper side of the mounting base 220. The fixing base 100 covers the upper side of the mounting base 220 and abuts against the upper end face of the substrate 210. Specifically, the mounting base 220 serves as a basic support structure, and its top end face is used to support the substrate 210. The surface of the substrate 210 is in direct contact with the bottom plane of the fixing base 100. After the fixing base 100 and the mounting base 220 are assembled, the upper end face of the substrate 210 is pressed down and abutted by the fixing base 100, forming a rigid contact in the vertical direction, which improves the stability of the overall structure.

[0057] Reference Figure 3As shown in this embodiment of the invention, the sensing component 200 further includes a base 240 and a sealing element 250. The base 240 is located below the mounting base 220. The upper surface of the base 240 has a sealing groove surrounding the substrate 210, with the opening of the sealing groove facing upwards. The sealing groove and the sensor 211 are radially spaced apart along the base 240. The sealing element 250 is located within the sealing groove and is tightly attached to the bottom wall of the sealing groove. The fixing base 100 has a flange corresponding to the sealing groove on its side facing the base 240. When the fixing base 100 is connected to the base 240, the flange abuts against the sealing element 250, causing it to compress and deform, thereby forming a closed area around the sensor 211, effectively isolating external dust or liquid. It should be noted that the sealing element 250 refers to an elastic element filled within the sealing groove and deformed under pressure; it can be made of rubber or silicone material.

[0058] Reference Figure 2 and Figure 3 As shown in this embodiment of the invention, the camera 400 includes a body 410 and a connecting plate 420. The connecting plate 420 is a transition structure used to achieve a rigid connection between the camera 400 and the mobile platform 300. The body 410 is a functional module containing optical lenses and a photosensitive element. The connecting plate 420 is fixedly connected to the side of the mobile platform 300 facing the fixed base 100, and the body 410 is connected to the side of the connecting plate 420 facing away from the mobile platform 300. The connecting plate 420 is directly fixed to the lower side of the mobile platform 300, while the body 410 is suspended at the end of the connecting plate 420 away from the mobile platform 300. When the mobile platform 300 moves along a first direction or a second direction, the rigid support of the connecting plate 420 keeps the movement path of the body 410 stable.

[0059] An embodiment of this utility model also proposes a prism testing device 10, which includes the testing component 1000 described in the above embodiment.

[0060] The prism testing device 10 of this embodiment adopts the testing component 1000 of the above embodiment. By setting the mounting groove 110 in the fixed base 100, the replacement of the bracket 101 becomes easy and convenient, greatly improving the efficiency when testing a large number of brackets 101 sequentially. By setting the light-transmitting hole 120, the light-emitting port 104 of the bracket 101 can be set opposite to the sensor 211, forming a precisely aligned light path. Then, the groove of the mounting groove 110 is set facing the moving stage 300. With the help of the moving stage 300, the camera 400 is moved along the first direction and / or along the second direction, thereby achieving coaxial alignment between the camera 400 and the light-inlet port 103. Based on this, after each bracket 101 is installed in place, the position of the camera 400 can be adjusted specifically by the moving stage 300, ensuring the precise alignment of the light-inlet port 103, the light-inlet surface 105 and the camera 400, reducing the impact of installation and processing errors on the testing accuracy, and thus improving the testing accuracy and reliability of the prism testing device 10.

[0061] Since the prism testing equipment 10 adopts all the technical solutions of the testing component 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0062] Reference Figure 5 As shown in the embodiment of this utility model, the prism testing device 10 further includes a moving mechanism 2000, which is used to drive the moving stage 300 to move along a first direction and / or along a second direction, thereby realizing automatic alignment of the optical path, effectively compensating for the position error and processing error of the bracket 101, and improving the accuracy and repeatability of optical performance testing.

[0063] Specifically, continue to refer to Figure 5 As shown in the embodiment of this utility model, the moving mechanism 2000 includes a test base 500, a connecting arm 600, and a driving device 700. The fixed base 100 and the sensing component 200 are fixedly connected to the test base 500. The driving device 700 is located on one side of the fixed base 100 and is connected to the connecting arm 600. The connecting arm 600 is connected to the moving stage 300. The driving device 700 is used to drive the connecting arm 600 to move the moving stage 300.

[0064] The moving mechanism 2000 refers to a mechanical transmission component capable of applying controllable displacement to the moving stage 300. Specifically, it can be implemented using a servo motor in conjunction with a ball screw or a linear motor in conjunction with a guide rail. Its function is to compensate for the positional deviation of the camera 400 by precisely controlling the spatial position of the moving stage 300. The test base 500 refers to a rigid support platform that supports the fixed base 100 and the sensing component 200. Specifically, it can be implemented using an aluminum alloy or steel frame structure. Its function is to provide a stable mounting foundation for the optical path reference. In this embodiment, the sensing component 200 also includes a circuit board 230, which is placed on the upper surface of the test base 500, and the base 240 is mounted on the circuit board 230. The connecting arm 600 refers to a mechanical linkage structure that transmits driving force. Specifically, it can be implemented using a multi-joint linkage or a rigid swing arm. Its function is to convert the output of the drive device 700 into planar displacement of the moving stage 300.

[0065] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A test assembly characterized by, A bracket for mounting a prism internally is provided, wherein the bracket has a light inlet and a light outlet offset along a first direction on opposite sides, the light inlet exposing the light-incident surface of the prism and the light outlet exposing the light-exposing surface of the prism. The testing component includes: The mounting base is provided with a mounting groove for mounting the bracket. The groove opening is arranged along a second direction and can expose the light inlet. The second direction is arranged at an angle to the first direction. The inner wall of the mounting groove along the second direction is provided with a light-transmitting hole. The light-transmitting hole and the light outlet are arranged opposite to each other along the second direction. A sensing component is disposed on the side of the fixing base where the light-transmitting hole is provided. The sensing component includes a sensor, and the sensor and the light-transmitting hole are disposed opposite to each other along the second direction. A mobile stage is located on the side of the fixed base away from the sensing component and spaced apart from the fixed base. A camera is mounted on the side of the mobile stage facing the fixed base. The mobile stage is configured to move the camera along a first direction and / or along a second direction so that the camera is coaxial with the light inlet.

2. The test assembly of claim 1, wherein, The fixed base has a positioning boss on the side facing the movable platform. The positioning boss is arranged circumferentially along the opening of the mounting groove and protrudes from the fixed base in the second direction. The movable platform has a positioning enclosure on the side facing the fixed base. The positioning enclosure protrudes from the movable platform in the second direction and defines a clearance groove with the movable platform. The positioning boss passes through the clearance groove. On the projection plane perpendicular to the second direction, the projection of the positioning boss is located within the outer contour line of the projection of the clearance groove.

3. The test assembly of claim 1, wherein, The second direction is the up-down direction. The groove of the mounting slot is set facing upward. The outer peripheral wall of the bracket is provided with an outward protruding edge. The inner peripheral wall of the mounting slot is provided with a stepped portion. The stepped portion is connected to the protruding edge to support the bracket.

4. The test assembly of claim 3, wherein, The stepped portion is constructed as a rib, which protrudes from the inner peripheral wall of the mounting groove and is arranged circumferentially along the mounting groove. The upper end face of the rib is flat, and the protruding edge overlaps the upper end face of the rib.

5. The test assembly of claim 4, wherein, The inner peripheral wall of the mounting groove is spaced apart from the outer peripheral wall of the bracket, and the distance between the inner peripheral wall of the mounting groove and the outer peripheral wall of the bracket is W, which satisfies: 0.09mm≤W≤0.13mm.

6. The test assembly of claim 1, wherein, The second direction is the up-down direction. The sensing component is located on the lower side of the fixed base. The sensing component also includes a substrate and a mounting base. The sensor is located on the substrate. The substrate is fixed to the upper side of the mounting base. The fixed base covers the upper side of the mounting base and abuts against the upper end surface of the substrate.

7. The test assembly of claim 1, wherein, The camera includes a body and a connecting plate. The connecting plate is fixedly connected to the side of the mobile platform facing the fixed base, and the body is connected to the side of the connecting plate facing away from the mobile platform.

8. Prism testing apparatus, characterized in that Includes the test components as described in any one of claims 1 to 7.

9. The prism testing apparatus of claim 8, wherein, The prism testing equipment further includes a moving mechanism for driving the moving stage to move along the first direction and / or along the second direction.

10. The prism testing apparatus of claim 9, wherein, The moving mechanism comprises a test seat, a connecting arm and a driving device, the fixing seat and the sensing assembly are fixedly connected to the test seat, the driving device is arranged on one side of the fixing seat and connected with the connecting arm, the connecting arm is connected with the moving table, and the driving device is used for driving the connecting arm to drive the moving table to move.

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