Optical detection jig and optical detection equipment

Abstract

The utility model is suitable for the technical field of product detection, and particularly relates to an optical detection jig and optical detection equipment. The light-transmitting carrying table is provided with a bearing surface for bearing a product to be detected; the reference piece is connected with the light-transmitting carrying table and is made of light-proof materials, the direction perpendicular to the light-transmitting carrying table is the first direction, at least part of the area of the light-transmitting carrying table in the first direction is not overlapped with the reference piece, and the area, not overlapped with the reference piece, of the light-transmitting carrying table is used for bearing products. The reference piece is provided with a reference surface which is flush with the bearing surface of the light-transmitting bearing platform and faces the same direction with the bearing surface. The utility model aims to solve the technical problem that a traditional jig cannot meet 2D and 3D detection requirements at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of product inspection, and more specifically, to an optical inspection fixture. Background Art

[0002] After some products are produced, they need to be inspected for size to determine whether they are qualified. The most widely used measurement method today is optical inspection, which is highly accurate and fast. It specifically includes 2D and 3D inspection of products. 2D inspection is to inspect the size of the product in the plane direction, and 3D inspection is to inspect the size in the three-dimensional direction.

[0003] When performing optical inspection on products, a fixture that can support or clamp the products is required for inspection. However, due to the different operations of 2D and 3D inspections, traditional fixtures can only meet the needs of 2D inspection alone or 3D inspection alone, and cannot meet the needs of both 2D and 3D inspections. Utility Model Content

[0004] The purpose of this application is to provide an optical inspection fixture and optical inspection equipment, aiming to solve the technical problem that traditional fixtures cannot meet the requirements of 2D and 3D inspection at the same time.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, an optical inspection fixture is provided, comprising:

[0007] A light-transmitting stage, the light-transmitting stage having a carrying surface for carrying a product to be inspected; and

[0008] A reference piece, the reference piece is connected to the light-transmitting stage, the reference piece is made of opaque material, the direction perpendicular to the light-transmitting stage is a first direction, in the first direction, at least part of the light-transmitting stage has a non-overlapping arrangement with the reference piece, the area of ​​the light-transmitting stage that does not overlap with the reference piece is used to carry the product, and the reference piece has a reference surface that is flush with and faces the same direction as the carrying surface of the light-transmitting stage. The optical detection device provided by the present application can meet both 2D detection requirements and 3D detection requirements.

[0009] In some embodiments of the first aspect, the entire area of ​​the light-transmitting stage does not overlap with the reference piece in the first direction, thereby expanding the product placement area so that the products can be arranged in a required form to meet the needs of detection.

[0010] In some embodiments of the first aspect, the reference piece is an annular structure, and the light-transmitting stage is arranged in an annular area surrounded by the reference piece. When the reference piece is annular, the light-transmitting stage can be connected with the surrounding reference pieces in the annular direction, which has better symmetry and is beneficial to the stability of the light-transmitting stage. In addition, the annular reference piece can avoid the light-transmitting stage in the circumferential direction, so that the two do not have an overlapping area, and the entire light-transmitting stage can be used to place products.

[0011] In some embodiments of the first aspect, the reference piece further has a contact surface opposite to the reference surface, the contact surface is used to fit the glass platform of the detection device, and the bottom surface of the light-transmitting stage opposite to the bearing surface is spaced apart from the contact surface in the first direction. Placing the light-transmitting stage directly on the glass platform will cause the two to rub against each other, resulting in poor light transmittance of the light-transmitting stage, affecting the accuracy of 2D size detection of the product, while the light-transmitting stage provided in this embodiment has a spacing with the glass platform, which avoids the above problem and facilitates the operator to take the fixture.

[0012] In some embodiments of the first aspect, the optical inspection fixture further comprises a plurality of partition plates, the partition plates being arranged in the area where the light-transmitting stage carries the product, and the product being arranged between two adjacent partition plates. This enables simultaneous inspection of multiple products, greatly improving the inspection efficiency, and each product can be independent and relatively fixed to each other, without interfering with each other, thereby ensuring the inspection accuracy.

[0013] In some embodiments of the first aspect, the plurality of partitions are evenly spaced along the second direction, a placement area adapted to the shape of the product is formed between two adjacent partitions, and the second direction is perpendicular to the first direction. The shape of the placement area formed between the two partitions is adapted to the product, and when the product is placed, it can be arranged in the same arrangement form, and multiple products are regularly arranged at equal distances and loaded into the fixture, and then through software array programming, multiple products are automatically tested.

[0014] In some embodiments of the first aspect, the partition plate is in a strip shape, spanning the light-transmitting stage and connected to the reference piece at both ends, so that more products can be clamped, and the strip-shaped partition plate can be suitable for the detection of strip-shaped metal products, such as metal shafts.

[0015] In some embodiments of the first aspect, the material of the light-transmitting stage is one or both of glass and transparent plastic. Glass or transparent plastic both have good light transmittance, hard texture and good durability.

[0016] In some embodiments of the first aspect, the light-transmitting carrier and the reference part are detachably connected; the light-transmitting carrier and the reference part are connected by one or more of screws, latches, pins, and rods; the above-mentioned connection method can firstly achieve a detachable connection, and can also form an overlapping area by setting a specific connection form, so that the assembly is simple and reasonable, and the operability is strong.

[0017] Alternatively, the reference piece is provided with a locking block, and the light-transmitting stage and the locking block are connected by one or more of a screw, a latch, a pin, and a plug rod. The locking block is not a part of the reference piece, and it can protrude from the surface of the reference piece. The locking block and the light-transmitting stage are connected to each other, so that the light-transmitting stage and the reference piece can be prevented from overlapping, and the projection area of ​​the locking block in the first direction can be set to be relatively small, so as to block the light-transmitting stage as little as possible.

[0018] In a second aspect, the present application also provides an optical inspection device, comprising the optical inspection fixture provided in any one of the above embodiments.

[0019] Since the optical inspection device provided in the present application includes an optical inspection fixture, the optical inspection device provided in the present application performs 2D and 3D inspections on the product at the same time.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of an optical inspection fixture provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 Schematic diagram of the bottom structure of the optical inspection fixture;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the optical inspection fixture carrying the product.

[0025] In the figure, 1. light-transmitting carrier; 2. carrying surface; 3. reference piece; 4. reference surface; 5. contact surface; 6. partition plate; 7. product; 8. placement area; 9. locking block. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Optical inspection includes 2D inspection and 3D inspection. The 2D inspection is to inspect the size of the product 7 in the X direction and the Y direction.

[0032] Regarding 2D detection, the product 7 to be inspected is placed on a carrier table. At this time, the carrier table is a fixture, and the carrier table is placed on a glass platform of the detection equipment. The carrier table is made of transparent material. Below the glass platform is a light source for emitting parallel light beams. The parallel light beams are perpendicular to the surface where the carrier table is located. Above the carrier table is a camera. The parallel light beams pass through the carrier table, and the camera receives the light signal. In this way, the dimensions of the product 7 in the X and Y directions can be measured. The plane formed by the XY axes is the plane where the carrier table is located. For 2D detection, the carrier table needs to be light-transmissive so that the camera can receive the signal.

[0033] In 3D detection, the product 7 to be inspected is placed on a carrier table. At this time, the carrier table is a fixture, which is placed on the glass platform of the detection equipment. The carrier table is made of opaque material. Above the carrier table is a laser sensor head. The laser sensor head scans the product 7 to obtain the depth information of the product 7 in the Z-axis direction. The flatness and height are judged based on the depth information. The height detection requirement requires a reference plane as a reference and comparison. Therefore, when scanning the product 7, the carrier table is also scanned. The height information of the carrier table is pre-set. Using the carrier table as the reference reference plane for the height, it is possible to compare and judge the height of the product 7, so as to determine whether the product 7 meets the requirements.

[0034] Therefore, in 2D detection, the support platform is required to be light-transmissive, while in 3D detection, the support platform is required to be made of opaque material so that it can reflect the laser and obtain scanning information.

[0035] In the actual application of 2D and 3D detection, the light-transmissive support platform and the light-opaque support platform need to be constantly switched. Based on this, the present application provides an optical detection fixture so that 2D and 3D detection can be performed simultaneously.

[0036] The optical inspection fixture of the present application is described in detail below in conjunction with specific embodiments. Figure 1 , Figure 2 and Figure 3 , the present application provides a specific embodiment of an optical inspection fixture, including a light-transmitting carrier 1 and a reference piece 3. Among them, the light-transmitting carrier 1 has a carrying surface 2 for carrying a product 7 to be inspected. The reference piece 3 is connected to the light-transmitting carrier 1. The reference piece 3 is made of an opaque material. The direction perpendicular to the light-transmitting carrier 1 is set as the first direction, and in the first direction, the light-transmitting carrier 1 has at least a partial area that is non-overlapping with the reference piece 3. The area of ​​the light-transmitting carrier 1 that does not overlap with the reference piece 3 is used to carry the product 7. The reference piece 3 has a reference surface 4 that is flush with the carrying surface 2 of the light-transmitting carrier 1 and faces the same direction.

[0037] Specifically, the light-transmitting stage 1 is a platform for carrying the product 7, which can pass light and is made of a transparent material. The cross-sectional shape of the light-transmitting stage 1 can be rectangular and have a certain thickness, forming a relatively flat cubic structure. One of the surfaces of the light-transmitting stage 1 is the bearing surface 2. When the light-transmitting stage 1 is in use, the bearing surface 2 is the top surface of the light-transmitting stage 1. Since the light-transmitting stage 1 can pass light, the light-transmitting stage 1 can perform 2D detection on the product 7.

[0038] In order to enable the optical inspection fixture provided in this embodiment to perform 3D inspection, it also includes a reference piece 3. The reference piece 3 is opaque. One of its functions is to provide a reference surface 4 when performing 3D inspection. On the other hand, it can also be connected to the light-transmitting stage 1 to form a support for the light-transmitting stage 1.

[0039] The reference part 3 and the light-transmitting stage 1 are connected to each other so that the two form an integrated structure. The first direction is the Z-axis direction mentioned above, and the first direction is perpendicular to the light-transmitting stage 1. When performing 2D detection, the light source below needs to emit parallel light along the first direction. The light needs to pass through the light-transmitting stage 1 and be received by the camera above. The reference part 3 cannot block the light-transmitting stage 1, so in the first direction, the light-transmitting stage 1 has at least a partial area that is non-overlapping with the reference part 3, and the light can pass through the non-overlapping area. The product 7 is placed in the non-overlapping area, so that 2D detection can be performed, thereby measuring the size information of the product 7 in the X-axis and Y-axis directions.

[0040] When performing 3D inspection, the laser sensor head located above the light-transmitting stage 1 scans the product 7 and the reference piece 3 below, specifically emitting laser light in a first direction to scan the product 7 and the reference surface 4 of the reference piece 3. Since the reference piece 3 is made of an opaque material, the reference surface 4 and the product 7 can both reflect the laser light, and the laser light emitted by the laser sensor head is reflected by the product 7 and the reference surface 4 and returns to the laser sensor head.

[0041] Specifically, the depth information of the product 7 and the reference surface 4 in the first direction can be measured, and the flatness and height of the product 7 can be judged according to the depth information. The height information of the reference surface 4 can also be obtained. The height information of the reference surface 4 is used as a reference benchmark. By comparing it with the height information of the product 7, it is judged whether the product 7 is qualified. Therefore, the reference surface 4 is set to be flush with the bearing surface 2, and the reference surface 4 and the bearing surface 2 are both facing the side of the laser sensor. In this way, the height of the reference surface 4 can be set to 0, and the height of the point on the product 7 that needs to be detected is compared with this 0.

[0042] The optical detection device provided in the embodiments of the present application can meet both 2D detection requirements and 3D detection requirements.

[0043] In some embodiments, see Figure 1 , the entire area of ​​the light-transmitting stage 1 in the first direction does not overlap with the reference piece 3. In this way, the light-transmitting stage 1 has no part that overlaps with the reference piece 3 in the first direction, and the product 7 can be placed in all areas of the light-transmitting stage 1, that is, the product 7 can be placed on the entire carrying surface 2. This has the effect of expanding the placement area of ​​the product 7, so that the product 7 can be arranged in a required form to meet the needs of detection.

[0044] In some embodiments, see Figure 1 The reference piece 3 can be a ring-shaped structure, and the transparent carrier 1 is arranged in the ring-shaped area surrounded by the reference piece 3.

[0045] The annular structure may be a rectangular ring, a circular ring or a triangular ring structure. The light-transmitting stage 1 may be arranged in an annular region, and may be arranged suspended.

[0046] The effect of this embodiment is that when the reference piece 3 is ring-shaped, the light-transmitting carrier 1 can be connected with the surrounding reference pieces 3 in the ring direction, which has better symmetry, is beneficial to the stability of the light-transmitting carrier 1, and the ring-shaped reference piece 3 can avoid the light-transmitting carrier 1 in the circumferential direction, so that there is no overlapping area between the two, and the entire light-transmitting carrier 1 can be placed on the product 7.

[0047] In some embodiments, see Figure 1 and Figure 2 The reference member 3 also has a contact surface 5 opposite to the reference surface 4, and the contact surface 5 is used to fit the glass platform of the detection equipment. The bottom surface of the transparent carrier 1 opposite to the carrying surface 2 is spaced apart from the contact surface 5 in the first direction.

[0048] Specifically, it can be understood that in the use state, the reference part 3 is placed on the glass platform of the detection equipment, and is placed through the contact surface 5 on the side opposite to the reference surface 4. At this time, the reference surface 4 is the top surface of the reference part 3, and the contact surface 5 is the bottom surface of the reference part 3. In order to make the reference surface 4 form a flat reference surface 4, the contact surface 5 can be polished so that the contact surface 5 fits well on the glass platform, thereby ensuring the flatness of the reference surface 4 on the other side. In the use state, the top surface of the light-transmitting stage 1 is the bearing surface 2, and the bearing surface 2 is flush with the reference surface 4. In addition, in this embodiment, a gap is reserved between the bottom surface of the light-transmitting stage 1, that is, the bottom surface opposite to the bearing surface 2, and the contact surface 5, so that when the contact surface 5 is placed on the glass platform, there is a certain gap between the bottom surface of the light-transmitting stage 1 and the glass platform, that is, there is no contact between the light-transmitting stage 1 and the glass platform, and it is in a suspended setting state.

[0049] The effect of this embodiment is that placing the light-transmitting stage 1 directly on the glass platform will cause the two to rub against each other, resulting in poor light transmittance of the light-transmitting stage 1, affecting the 2D size detection accuracy of the product 7. However, the light-transmitting stage 1 provided in this embodiment has a distance from the glass platform, which avoids the above problem and makes it convenient for operators to take the fixture.

[0050] In some embodiments of this application, please refer to Figure 1 and Figure 3 The optical inspection fixture further includes a plurality of partition plates 6 , which are disposed in the area where the light-transmitting stage 1 carries the product 7 , and the product 7 is disposed between two adjacent partition plates 6 .

[0051] Specifically, in order to improve the detection efficiency of the product 7, it is usually necessary to place multiple products 7 on the light-transmitting stage 1 for detection, so a partition plate 6 is provided, which has the effect of firstly separating the products 7 from each other so that they do not interfere with each other, and secondly, the product 7 can be fixed by two adjacent partition plates 6 so that the product 7 does not move during the detection process, thereby ensuring the accuracy of the detection. The partition plate 6 can position the product 7 between the two partition plates 6 in the form of contact, and the products 7 can be arranged in batches to achieve automated detection.

[0052] In some cases, the partition plate 6 can be arranged in close contact with the supporting surface 2 of the light-transmitting stage 1, or can be arranged suspended above the supporting surface 2 of the light-transmitting stage 1, depending on whether the intermediate product 7 can be clamped. A plurality of partition plates 6 can be arranged in parallel with each other.

[0053] This embodiment realizes the simultaneous detection of multiple products 7, greatly improving the detection efficiency, and each product 7 can be independent and relatively fixed to each other without interfering with each other, thereby ensuring the accuracy of detection.

[0054] Furthermore, the partition plates 6 may be arranged in such a way that a plurality of partition plates 6 are evenly spaced along the second direction, and a placement area 8 matching the shape of the product 7 is formed between two adjacent partition plates 6, and the second direction is perpendicular to the first direction.

[0055] Specifically, the second direction may be the X-axis direction or the Y-axis direction. Since the light-transmitting stage 1 carries multiple products 7, in order to realize 2D and 3D detection of multiple products 7, after the detection of one product 7 is completed, the light-transmitting stage 1 needs to be moved along the second direction, so as to realize the detection of the next product 7 and multiple products 7 in sequence. Specifically, the glass platform of the detection device is moved along the second direction to realize the movement of the light-transmitting stage 1.

[0056] Since sequential detection is achieved by moving in the second direction, the partition plates 6 need to be arranged at intervals along the second direction, so that the products 7 can be arranged along the second direction. Furthermore, since the partition plates 6 are evenly arranged, the products 7 are also evenly arranged accordingly, and the shape of the placement area 8 formed between the two partition plates 6 is adapted to the products 7. When the products 7 are placed, they can be arranged in the same arrangement form. Multiple products 7 are arranged regularly and equidistantly and loaded into the fixture, and then software array programming is used to realize automatic detection of multiple products 7.

[0057] In some embodiments, see Figure 1 and Figure 3 The partition plate 6 is in a strip shape, and the partition plate 6 spans the light-transmitting stage 1 and is connected to the reference member 3 at both ends. The partition plate 6 can be in a strip shape, and the strip-shaped partition plate 6 can span the light-transmitting stage 1, so that more products 7 can be clamped. The strip-shaped partition plate 6 can be suitable for the detection of strip-shaped metal products 7, such as metal shafts.

[0058] In some cases, the partition plate 6 may also be in other forms, which may be specifically set according to the shape of the product 7 to be inspected.

[0059] In some embodiments, the material of the light-transmitting stage 1 can be one or both of glass and transparent plastic. Glass or transparent plastic both have good light transmittance, hard texture and good durability.

[0060] The connection form between the light-transmitting stage 1 and the reference member 3 provided in this embodiment can be overlapped. Specifically, some step structures can be set on the reference member 3, and the light-transmitting stage 1 is overlapped on the step structures to achieve connection. The steps can be set narrower to reduce the overlapping area with the light-transmitting stage 1. The overlap method allows the light-transmitting stage 1 to be conveniently set on the reference member 3, and the operation is simple and convenient.

[0061] In other embodiments, the light-transmitting carrier 1 and the reference member 3 may be detachably connected.

[0062] Specifically, the light-transmitting stage 1 and the reference piece 3 may be connected by one or more of screws, latches, pins, and rods.

[0063] Specifically, it can be arranged as follows: a first hole is provided on the light-transmitting carrier 1, a second hole is provided on the reference piece 3, and a screw, a latch, a pin shaft or a rod is respectively inserted into the first hole and the second hole to connect them with each other.

[0064] Furthermore, in order to achieve that there is no overlapping area between the light-transmitting carrier 1 and the reference piece 3 in the first direction, screws, latches, pins, and rods can be passed through the reference piece 3, and the passed ends can be pressed against the side of the light-transmitting carrier 1. Specifically, multiple latches can be used to press against the side of the light-transmitting carrier 1 from multiple directions, thereby achieving the connection between the reference piece 3 and the light-transmitting carrier 1.

[0065] Therefore, the effect of this embodiment is that, firstly, a detachable connection can be achieved through the above connection method, and an overlapping area can be avoided by setting a specific connection form, so that the assembly is simple and reasonable, and the operability is strong.

[0066] Alternatively, you can set it like this, see Figure 1 A locking block 9 is provided on the reference member 3, and the light-transmitting carrier 1 and the locking block 9 are connected by one or more of screws, latches, pins, and rods.

[0067] The locking block 9 is not a part of the reference member 3, and it can protrude from the surface of the reference member 3. The locking block 9 and the light-transmitting stage 1 are connected to each other, so that the light-transmitting stage 1 and the reference member 3 can be prevented from overlapping, and the projection area of ​​the locking block 9 in the first direction can be set to be relatively small, so as to block the light-transmitting stage 1 as little as possible. The specific connection form can also be to set a hole on the locking block 9, set a hole on the light-transmitting stage 1, and insert screws, latches, pins, rods, etc. to achieve connection. It is also very simple and convenient to use the locking block 9 for connection.

[0068] The present application also provides a specific embodiment of an optical inspection device, including the optical inspection fixture provided in any of the above embodiments.

[0069] Since the optical inspection device provided in this embodiment includes an optical inspection fixture, the optical inspection device provided in this embodiment performs 2D and 3D inspection on the product 7 at the same time.

[0070] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An optical inspection fixture, characterized in that: include: A light-transmitting stage, wherein the light-transmitting stage has a carrying surface for carrying a product to be inspected; as well as A reference piece, wherein the reference piece is connected to the light-transmitting carrier, the reference piece is made of opaque material, the direction perpendicular to the light-transmitting carrier is a first direction, in the first direction, at least a partial area of ​​the light-transmitting carrier is non-overlappingly arranged with the reference piece, the area of ​​the light-transmitting carrier that does not overlap with the reference piece is used to carry the product, and the reference piece has a reference surface that is flush with and faces the same direction as the carrying surface of the light-transmitting carrier.

2. The optical inspection fixture according to claim 1, characterized in that: The entire area of ​​the light-transmitting stage in the first direction does not overlap with the reference piece.

3. The optical inspection fixture according to claim 1, characterized in that: The reference piece is an annular structure, and the light-transmitting stage is arranged in the annular area surrounded by the reference piece.

4. The optical inspection fixture according to any one of claims 1 to 3, characterized in that: The reference piece also has a contact surface opposite to the reference surface, and the contact surface is used to fit the glass platform of the detection device. The bottom surface of the light-transmitting platform opposite to the bearing surface is spaced apart from the contact surface in the first direction.

5. The optical inspection fixture according to any one of claims 1 to 3, characterized in that: The optical inspection fixture further includes a plurality of partition plates, wherein the partition plates are arranged in the area where the light-transmitting stage carries the product, and the product is arranged between two adjacent partition plates.

6. The optical inspection fixture according to claim 5, characterized in that: The plurality of partition plates are evenly spaced along a second direction, and a placement area adapted to the shape of the product is formed between two adjacent partition plates. The second direction is perpendicular to the first direction.

7. The optical inspection fixture according to claim 5, characterized in that: The partition plate is in a strip shape, spanning across the light-transmitting stage and having two ends connected to the reference piece.

8. The optical inspection fixture according to any one of claims 1 to 3, characterized in that: The material of the light-transmitting carrier is glass or transparent plastic.

9. The optical inspection fixture according to claim 1, characterized in that: The light-transmitting stage and the reference piece are detachably connected; The light-transmitting stage and the reference piece are connected by one or more of screws, latches, pins, and rods; Alternatively, a locking block is provided on the reference member, and the light-transmitting carrier is connected to the locking block by one or more of screws, latches, pins, and rods.

10. An optical detection device, characterized in that: An optical detection fixture comprising any one of claims 1 to 9.

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