QR Code Detection Device

Abstract

The present invention relates to a two-dimensional code detection device. The two-dimensional code detection device is used to detect a two-dimensional code on a sample, the sample includes a first side and a second side opposite to each other, and the two-dimensional code detection device includes a light source module, a scattering module and an image sensor. The light emitted by the light source module can irradiate the sample from the first side. The scattering module is arranged on the second side of the sample, and the scattering module can reflect the light passing through the sample to form scattered light. The image sensing element is used to obtain the scattered light passing through the sample. The above two-dimensional code detection device can identify the two-dimensional code on the lens sample.

Description

Technical Field

[0001] The present invention relates to the technical field of two-dimensional code detection, and particularly to a two-dimensional code detection device. Background Art

[0002] Traditional lenses are mostly manufactured by injection molding. In the mass production of lenses, it is usually necessary to mark the lenses for authenticity identification and traceability. The traditional marking method usually engraves a two-dimensional code on the injection mold of the lens, so that the lens can carry two-dimensional code information after injection molding, and the injection mold of the lens can be traced by identifying the two-dimensional code on the lens. However, at present, it is difficult to identify the two-dimensional code on the lens, which affects the traceability of lens molding. Summary of the Invention

[0003] Based on this, it is necessary to provide a two-dimensional code detection device for the problem that it is difficult to identify the two-dimensional code on the lens at present.

[0004] A two-dimensional code detection device for detecting a two-dimensional code on a sample, the sample including a first side and a second side opposite to each other, the two-dimensional code detection device including:

[0005] A light source module, the light emitted by the light source module can irradiate the sample from the first side;

[0006] A scattering module, disposed on the second side of the sample, the scattering module can reflect the light transmitted through the sample to form scattered light; and

[0007] An image sensing element for obtaining the scattered light transmitted through the sample.

[0008] In one embodiment, the light source module includes a light-emitting light source and a reflector assembly, and the light emitted by the light-emitting light source is irradiated on the sample after at least one reflection on the reflector assembly.

[0009] In one embodiment, the reflector assembly includes a first reflector and a second reflector, the first reflector is disposed on the light-emitting side of the light-emitting light source, the second reflector is disposed on the first side of the sample, and the first reflector is opposite to the second reflector.

[0010] In one embodiment, the light-emitting light source is disposed between the second reflector and the sample, and the first reflector is disposed on the second side of the sample;

[0011] And / or, the first reflector is inclined to the light-emitting direction of the light-emitting light source, and the first reflector is parallel to the second reflector.

[0012] In one embodiment, the light-emitting light source further includes a back side facing away from the light-emitting side, and the image sensing element is disposed on the back side of the light-emitting light source.

[0013] In one embodiment, the light-emitting light source is a coaxial light source.

[0014] In one embodiment, the scattering module includes a turntable and a reflection film disposed on the turntable, and the turntable can drive the reflection film to rotate.

[0015] In one embodiment, the reflection film includes a scattering layer, the scattering layer includes a plurality of microstructures arranged in an array, and each microstructure includes at least two mutually inclined reflection surfaces.

[0016] In one embodiment, the reflection film further includes an anti-reflection film layer, a reflection layer, and an absorption layer arranged in sequence in the direction from the sample to the reflection film. The reflectivity of the reflection layer is greater than or equal to 70%, and the scattering layer is disposed between the anti-reflection film layer and the reflection layer.

[0017] In one embodiment, a fixture module is further included. The fixture module includes a fixing member and a positioning member. The fixing member is used to fix the sample. The positioning member is disposed on the periphery of the sample, and the positioning member has a positioning surface facing the sample, and the positioning surface is adapted to the shape of the sample.

[0018] In the above-mentioned two-dimensional code detection device, the light emitted by the light source module irradiates and passes through the sample from the first side to reach the scattering module. The scattering module reflects the light passing through the sample to form scattered light, and the scattered light passes through the sample from the second side and is acquired by the image sensing element. By forming scattered light through the scattering module to irradiate the sample, the scattered light can better adapt to the irregular shape of the sample surface, so as to more accurately acquire the two-dimensional code information on the sample for the image sensing element to acquire, and further make it easier for the image sensing element to recognize the two-dimensional code on the sample. Description of the Drawings

[0019] Figure 1 Is an axonometric view of the two-dimensional code detection device in some embodiments;

[0020] Figure 2 Is a front view of the two-dimensional code detection device in some embodiments;

[0021] Figure 3 Is a left view of the two-dimensional code detection device in some embodiments;

[0022] Figure 4 Is a schematic structural diagram of the light source module and the sample in some embodiments;

[0023] Figure 5 For Figure 4Schematic structural diagram of the light source module and the sample from another angle;

[0024] Figure 6 Schematic structural diagrams of the scattering module and the jig module in some embodiments;

[0025] Figure 7 For Figure 6 Schematic structural diagram of the scattering module and the jig module from another angle;

[0026] Figure 8 Schematic diagram of the reflective film in some embodiments;

[0027] Figure 9 Schematic diagram of the scattering layer in some embodiments.

[0028] Wherein, 10 is the two-dimensional code detection device; 110 is the machine; 1110 is the tabletop; 120 is the light source module; 1210 is the light-emitting light source; 1220 is the reflector assembly; 1221 is the first reflector; 1222 is the second reflector; 1223 is the pressing block; 130 is the scattering module; 1310 is the turntable; 1320 is the motor; 1330 is the reflective film; 1331 is the scattering layer; 1332 is the micro-structure; 1333 is the reflective surface; 1334 is the anti-reflection film layer; 1335 is the light-transmitting protective layer; 1336 is the reflective layer; 1337 is the absorption layer; 140 is the image sensing element; 150 is the jig module; 1510 is the fixing member; 1511 is the main body; 1512 is the fixing part; 1520 is the positioning member; 1521 is the connecting part; 1522 is the positioning part; 1523 is the positioning surface; 20 is the sample; 210 is the first side; 220 is the second side. Detailed implementation manners

[0029] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 , Figure 2 and Figure 3 are respectively the axonometric view, front view and left view of the two-dimensional code detection device 10 in some embodiments. The two-dimensional code detection device 10 can be used to identify the two-dimensional code on the sample 20, for example, to identify the two-dimensional code on a lens (not shown in the figure). It is worth mentioning that the size of the lens sample 20 is usually small. For example, the radial size of the lens sample 20 is between 55 mm and 82 mm, and the size of the two-dimensional code on the lens sample 20 is even smaller. For example, the dot matrix diameter forming the two-dimensional code is about 0.125 mm. Moreover, the lens sample 20 is usually made of a transparent material and has an irregular shape, resulting in the light hitting the two-dimensional code on the lens sample 20 being prone to multiple reflections and / or refractions to form stray light. Therefore, it is difficult to directly obtain a clear image of the two-dimensional code on the lens sample 20 by the naked eye or a camera, resulting in difficulty in identifying the two-dimensional code on the sample 20.

[0036] To address the above problems, the present application provides a two-dimensional code detection device 10 that can clearly identify the two-dimensional code on the lens sample 20. Specifically, in some embodiments, the two-dimensional code detection device 10 includes a machine table 110 and a light source module 120, a scattering module 130, and an image sensing element 140 disposed on the machine table 110. The material of the sample 20 is a light-transmitting material, and the sample 20 has opposite first side 210 and second side 220. The light emitted by the light source module 120 can irradiate the sample 20 from the first side 210. The scattering module 130 is located on the second side 220 of the sample 20. The light emitted by the light source module 120 reaches the scattering module 130 after passing through the sample 20 from the first side 210, and will be reflected by the scattering module 130 to form scattered light. Part of the scattered light formed by the scattering module 130 irradiates the sample 20 from the second side 220. The image sensing element 140 can acquire the scattered light passing through the sample 20, so as to acquire the two-dimensional code image on the sample 20 for detecting and identifying the two-dimensional code on the sample 20.

[0037] It should be noted that the light emitted by the light source module 120 can irradiate the sample 20 from the first side 210, which includes not only the case where the light source module 120 is opposite to the surface of the sample 20 facing the first side 210, and the light emitted by the light source module 120 directly hits the surface of the sample 20 facing the first side 210; but also the case where the light-emitting surface of the light source module 120 is not opposite to the sample 20, and the light emitted by the light source module 120 hits the surface of the sample 20 facing the first side 210 after passing through the light guide element or the reflection element. The shape of the sample 20 can be any irregular shape. For example, the sample 20 can be a lens with at least one side being an arc surface. The sample 20 includes an object side and an image side facing away from each other. Then the first side 210 can be the side towards which the object side of the sample 20 faces, and the second side 220 can be the side towards which the image side of the sample 20 faces. In addition, the scattering module 130 reflects the light passing through the sample 20 to form scattered light. It can be understood that after the light emitted by the light source module 120 passes through the sample 20 and hits the scattering module 130, it will be reflected in multiple different directions. For example, the light undergoes diffuse reflection on the scattering module 130. The scattered light formed by the scattering module 130 can hit the two-dimensional code on the surface of the sample 20 from multiple different directions.

[0038] In the above two-dimensional code detection device 10, scattered light is formed by the scattering module 130 to irradiate the sample 20. The scattered light can better adapt to the irregular shape of the surface of the sample 20. In other words, even if the surface of the sample 20 is irregular, and the scattered light hits the surface of the sample 20 from multiple different directions, it can also increase the proportion of the light irradiating the sample 20 in the direction perpendicular to the surface of the sample 20. Therefore, when the two-dimensional code is provided on the irregular surface of the sample 20, some of the scattered light formed by the scattering module 130 can hit the sample 20 in the direction perpendicular to the surface where each dot matrix of the two-dimensional code is located, and then carry the two-dimensional code image information on the sample 20 and pass through the sample 20 to be received by the image sensing element 140, so that the image sensing element 140 can obtain a clear image of the two-dimensional code on the sample 20 and it is easier to identify and detect the two-dimensional code.

[0039] Furthermore, referring to Figure 3 、 Figure 4 and Figure 5 shown, Figure 4 and Figure 5 are respectively schematic structural diagrams of the light source module 120 and the sample 20 at different angles in some embodiments. In some embodiments, the light source module 120 includes a light-emitting light source 1210 for emitting light and a reflector assembly 1220 for changing the light path. The light emitted by the light-emitting light source 1210 is irradiated on the sample 20 after undergoing at least one reflection on the reflector assembly 1220. The reflector assembly 1220 is provided to change the light path, so that the light-emitting light source 1210 does not need to face the sample 20 directly, which is beneficial to meeting the structural requirements of the two-dimensional code detection device 10 and making the structure of the two-dimensional code detection device 10 more compact.

[0040] Specifically, in some embodiments, the reflector assembly 1220 includes a first reflector 1221 and a second reflector 1222. The first reflector 1221 is disposed on the light-emitting side of the light-emitting source 1210, and the second reflector 1222 is disposed on the first side 210 of the sample 20. The first reflector 1221 faces the second reflector 1222. The light emitted by the light-emitting source 1210 is reflected by the first reflector 1221 and the second reflector 1222 in sequence and then hits the surface of the sample 20 facing the first side 210. The light-emitting side of the light-emitting source 1210 is the side facing the light-emitting surface of the light-emitting source 1210. It can be understood that by arranging the first reflector 1221 and the second reflector 1222 to reflect the optical path twice, the effect of folding the optical path can be achieved, thereby compressing the size of the two-dimensional code detection device 10 while satisfying the optical path propagation distance, making the structure of the two-dimensional code detection device 10 more compact and improving the space utilization rate.

[0041] Furthermore, in some embodiments, in the axial direction of the sample 20, for example, in the direction perpendicular to the tabletop 1110 of the machine platform 110, the light-emitting source 1210 is located between the second reflector 1222 and the sample 20, and the first reflector 1221 is located on the second side 220 of the sample 20. With such an arrangement, when the sample 20 is placed on the tabletop 1110 of the machine platform 110, the first reflector 1221 can fold the optical path into the machine platform 110, thereby further compressing the size of the two-dimensional code detection device 10 and improving the space utilization rate. It should be noted that the tabletop 1110 of the machine platform 110 can be understood as the operating surface of the machine platform 110, such as the loading and unloading surface or the button control surface.

[0042] In some embodiments, the projections of the light-emitting source 1210 and the sample 20 on the tabletop 1110 are misaligned. The first reflector 1221 is inclined to the light-emitting direction of the light-emitting source 1210, and the first reflector 1221 is parallel to the second reflector 1222. With such an arrangement, the first reflector 1221 and the second reflector 1222 can more easily guide the light emitted by the light-emitting source 1210 to the sample 20. Of course, there can be other settings for the relative positions of the light-emitting source 1210, the first reflector 1221, and the second reflector 1222, as long as the light emitted by the light-emitting source 1210 can hit the sample 20 after being reflected by the first reflector 1221 and the second reflector 1222.

[0043] In some other embodiments, the light source module 120 may also include a reflector. In this case, the light-emitting light source 1210 emits light towards the first side 210. The light emitted by the light-emitting light source 1210 is reflected once and then hits the sample 20, which can also achieve the effect of folding the optical path and thus compressing the size of the two-dimensional code detection device 10. The reflector assembly 1220 may also include three, four or more reflectors, and the spatial utilization rate of the two-dimensional code detection device 10 can be improved by folding the optical path multiple times. Of course, the light-emitting light source 1210 may also be directly opposite to the sample 20, and the light emitted by the light-emitting light source 1210 directly hits the sample 20, as long as the two-dimensional code information on the sample 20 can be obtained after the light is reflected by the scattering module 130.

[0044] It should be noted that when the light emitted by the light-emitting light source 1210 has good linearity, the light-emitting direction of the light-emitting light source 1210 can be understood as the propagation direction of the emitted light beam. For example, in some embodiments, the light-emitting light source 1210 is a coaxial light source that can emit a light beam with good linearity, so that the light emitted by the light-emitting light source 1210 is more likely to reach the sample 20 after multiple reflections, improving the utilization rate of the light. At the same time, the light beam with good linearity is also more likely to hit the sample 20 after being reflected by the scattering module 130. The light-emitting light source 1210 may also emit relatively divergent light, and the light-emitting direction of the light-emitting light source 1210 can be understood as the direction in which the light-emitting surface of the light-emitting light source 1210 points directly forward, or the direction with the maximum light intensity.

[0045] In some embodiments, the light-emitting light source 1210 further includes a back side facing away from the light-emitting side, and the image sensing element 140 is disposed on the back side of the light-emitting light source 1210. It can be understood that after the scattered light formed by the scattering module 130 irradiates and passes through the sample 20, it will return along the original path. In other words, the scattered light passing through the sample 20 reaches the light-emitting light source 1210 after being reflected by the second reflector 1222 and the first reflector 1221 in sequence. By disposing the image sensing element 140 on the back side of the light-emitting light source 1210, the scattered light can pass through the light-emitting light source 1210 and be received by the image sensing element 140 after reaching the light-emitting light source 1210, without the need to set up other propagation spaces to receive the light, effectively improving the spatial utilization rate of the two-dimensional code detection device 10. In some embodiments, the image sensing element 140 may be an element capable of acquiring images such as a camera or a machine vision lens.

[0046] Reference Figure 2 、 Figure 6 and Figure 7 as shown in Figure 6 and Figure 7They are schematic diagrams of structures of the scattering module 130 and the fixture module 150 at different angles in some embodiments. In some embodiments, the two-dimensional code detection device 10 also includes a fixture module 150 disposed on the machine 110, and the fixture module 150 is used to position the sample 20 and fix the sample 20 on the machine 110. Specifically, the fixture module 150 includes a fixing member 1510 and a positioning member 1520, and the fixing member 1510 is used to fix the sample 20 on the table 1110. The positioning member 1520 includes a connecting portion 1521 and a positioning portion 1522, and the positioning portion 1522 is located on the peripheral side of the sample 20, and the connecting portion 1521 is fixedly connected to the machine 110 and the positioning portion 1522. The positioning portion 1522 is formed with a positioning surface 1523 facing the sample 20, and the positioning surface 1523 is adapted to the shape of the sample 20. For example, the side of the sample 20 is any regular or irregular arc surface, and the positioning surface 1523 is adapted to the shape of the side of the sample 20. When the sample 20 is placed on the fixing member 1510, the positioning surface 1523 of the positioning portion 1522 abuts against the side of the sample 20, thereby achieving accurate positioning of the sample 20, and facilitating accurate identification of the QR code on the sample 20. The fixing member 1510 includes a main body 1511 and a fixing portion 1512, the main body 1511 is fixedly arranged on the machine table 110, and the fixing portion 1512 is arranged on the side of the main body 1511 away from the table 1110 and is used to fix the sample 20, for example, the fixing portion 1512 fixes the sample 20 by vacuum adsorption. It can be understood that the main body 1511 also adopts a light-transmitting material to avoid blocking the passage of light between the sample 20 and the scattering module 130. Similarly, the portion corresponding to the position between the machine table 110 and the main body 1511 and the scattering module 130 can be provided with a hole groove or a light-transmitting material to avoid blocking the passage of light between the sample 20 and the scattering module 130.

[0047] In some embodiments, the scattering module 130 includes a turntable 1310, a motor 1320, and a reflective film 1330 disposed on the turntable 1310. The output shaft of the motor 1320 is connected to the turntable 1310. The motor 1320 can drive the turntable 1310 to rotate, thereby driving the reflective film 1330 to rotate along the axis of the sample 20. The turntable 1310 is arranged to drive the reflective film 1330 to rotate, which can continuously change the angle at which light is reflected on the reflective film 1330, enhance the diffuse reflection effect of light on the reflective film 1330, thereby forming scattered light emitted in more directions, which is beneficial to the recognition of the two-dimensional code on the sample 20. Of course, in other embodiments, the scattering module 130 may not be provided with a turntable 1310, and the reflective film 1330 is fixed to the second side 220 of the sample 20. The reflective film 1330 forms a diffuse reflection surface, and light can also be diffusely reflected on the reflective film 1330 to form scattered light.

[0048] refer to Figure 2 , Figure 8 and Figure 9As shown Figure 8 is a schematic diagram of the reflective film 1330 in some embodiments, Figure 9 is a schematic diagram of the scattering layer 1331 in some embodiments. In some embodiments, the reflective film 1330 includes a multi-layer structure, which includes the scattering layer 1331. The scattering layer 1331 includes a substrate and a plurality of microstructures 1332 arranged in an array on the substrate, and each microstructure 1332 includes at least two mutually inclined reflective surfaces 1333. By providing the scattering layer 1331 including a plurality of microstructures 1332 and the reflective surfaces 1333 of the microstructures 1332 being mutually inclined, a plurality of tiny reflective surfaces 1333 facing different directions can be formed on the scattering layer 1331. In other words, the scattering layer 1331 constitutes a diffuse reflection surface 1333. When light hits the scattering layer 1331, reflections occur respectively on the reflective surfaces 1333 facing different directions, so as to form scattered light by reflecting in different directions. In some embodiments, the microstructure 1332 is generally in the shape of a multi-pyramid structure. The microstructure 1332 may include three, four or five reflective surfaces 1333, and the plurality of microstructures 1332 are arranged in a regular array on the substrate. Of course, the shape of the microstructure 1332 is not limited and can be any regular or irregular shape, and the shapes of adjacent microstructures 1332 may be the same or different, as long as at least two mutually inclined reflective surfaces 1333 can be formed. The arrangement rule of the plurality of microstructures 1332 on the substrate is not limited and can be any regular or irregular arrangement manner. The closer the arrangement of the microstructures 1332 is, the better the scattering effect of the scattering layer 1331 is.

[0049] In some embodiments, the shapes of the respective microstructures 1332 are the same and are arranged closely in a regular array, and the areas and shapes of the respective reflective surfaces 1333 of the microstructures 1332 are the same. The height of the microstructure 1332 on the substrate, that is, Figure 9 the dimension A shown is 15um - 25um, specifically it can be 20um. The length of the connection between the reflective surface 1333 and the substrate, that is, Figure 9 the dimension B shown is between 2um - 8um, specifically it can be 5um. The microstructure 1332 can be rough processed by nanoimprinting and finely processed by a high-precision diamond tool. The scattering layer 1331 can be formed by optically transferring and replicating a plurality of microstructures 1332 on the substrate.

[0050] In some embodiments, the reflective film 1330 further includes an antireflection film layer 1334, a light-transmitting protective layer 1335, a reflective layer 1336, and an absorption layer 1337 arranged in sequence in the direction of the sample 20 pointing to the reflective film 1330. The scattering layer 1331 is disposed between the light-transmitting protective layer 1335 and the reflective layer 1336. Specifically, the antireflection film layer 1334 can be an antireflection and anti-reflection film, which is used to enhance the transmission of incident light and reduce the reflection of light on the antireflection film layer, improve the utilization rate of light, and can filter the scattered light emitted from the sample 20 onto the reflective film 1330 to reduce interfering light. The light-transmitting protective layer 1335 is made of a hard material, such as glass or plastic, which is used to enhance the structural strength of the reflective film 1330 and protect the scattering layer 1331. The reflectivity of the reflective layer 1336 is greater than or equal to 70%. The reflective layer 1336 can specifically be a dielectric film reflective layer or other film layers with high reflectivity. The reflective layer 1336 is disposed on the side of the scattering layer 1331 away from the sample 20, and is used to reflect the light transmitted through the scattering layer 1331 towards the sample 20 to improve the utilization rate of light. The absorption layer 1337 can be made of a light-absorbing material, which is used to absorb the light transmitted through the reflective layer 1336 to prevent the light from leaking from the side of the reflective film 1330 away from the sample 20 to form interfering light.

[0051] Please refer to Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments, the image sensing element 140, the light-emitting light source 1210, the first reflector 1221, and the second reflector 1222 are all slidably connected to the slide rail (not shown) of the machine table 110 through sliders (not shown in the figure), so that the relative positions of the image sensing element 140, the light-emitting light source 1210, the first reflector 1221, and the second reflector 1222 can be adjusted, facilitating the light emitted by the light-emitting light source 1210 to accurately hit the sample 20. In some embodiments, pressing blocks 1223 are provided at the four corners of the first reflector 1221 and the second reflector 1222, which are used to fix the first reflector 1221 and the second reflector 1222, and can also adjust the angles of the first reflector 1221 and the second reflector 1222, which is also beneficial for the light emitted by the light-emitting light source 1210 to accurately hit the sample 20.

[0052] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0053] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A two-dimensional code detection device for detecting a two-dimensional code on a sample, the sample including a first side and a second side facing away from each other, characterized in that The two-dimensional code detection device includes: A light source module, the light emitted by the light source module can irradiate the sample from the first side. The light source module includes a light-emitting source and a reflector assembly. The light emitted by the light-emitting source is reflected at least once on the reflector assembly and then irradiates the sample. The reflector assembly includes a first reflector and a second reflector. The first reflector is arranged on the light-emitting side of the light-emitting source. The second reflector is arranged on the first side of the sample. The first reflector is opposite to the second reflector. The light-emitting source is arranged between the second reflector and the sample. The first reflector is arranged on the second side of the sample; A scattering module, arranged on the second side of the sample. The scattering module can reflect the light transmitted through the sample to form scattered light. The scattering module includes a turntable and a reflection film arranged on the turntable. The turntable can drive the reflection film to rotate. The reflection film includes a scattering layer. The scattering layer includes a plurality of microstructures arranged in an array, and each microstructure includes at least two mutually inclined reflecting surfaces; An image sensing element, used to acquire the scattered light transmitted through the sample; A machine table, having a tabletop for placing the sample. The scattering module and the first reflector are both located on the side of the tabletop facing away from the light-emitting source and inside the machine table.

2. The two-dimensional code detection device according to claim 1, wherein The tabletop is provided with a light passing opening corresponding to the position between the light-emitting source and the first reflector.

3. The two-dimensional code detection device according to claim 1, characterized in that, The first reflector is inclined to the light-emitting direction of the light-emitting source, and the first reflector is parallel to the second reflector.

4. The two-dimensional code detection device according to claim 1, wherein The light-emitting source further includes a back side facing away from the light-emitting side, and the image sensing element is arranged on the back side of the light-emitting source.

5. The two-dimensional code detection device according to claim 4, wherein The light reflected by the first reflector can pass through the light-emitting source and be received by the image sensing element.

6. The two-dimensional code detection device according to claim 1, wherein The light-emitting source is a coaxial light source.

7. The two-dimensional code detection device according to claim 1, wherein, The reflection film further includes an anti-reflection film layer, a reflection layer, and an absorption layer arranged in sequence in the direction from the sample to the reflection film. The reflectivity of the reflection layer is greater than or equal to 70%, and the scattering layer is arranged between the anti-reflection film layer and the reflection layer.

8. The two-dimensional code detection device according to any one of claims 1-6, characterized in that, It further includes a fixture module. The fixture module includes a fixing member and a positioning member. The fixing member is used to fix the sample. The positioning member is arranged on the periphery of the sample, and the positioning member has a positioning surface facing the sample. The positioning surface is adapted to the shape of the sample.

Images