A glass coating orientation recognition device

Abstract

This utility model provides a glass coating orientation recognition device, specifically relating to the technical field of glass inspection equipment. The device includes: a housing with a receiving cavity and a light-transmitting opening; a light source disposed within the receiving cavity, whose emitted light passes through the light-transmitting opening to illuminate the surface of coated glass placed therein; a detection component disposed within the receiving cavity, used to receive light reflected from the surface of the coated glass and generate a grayscale image; and a bandpass filter component disposed within the receiving cavity, equipped with a bandpass filter to filter the light reflected from the surface of the coated glass. This achieves non-contact detection of the glass coating orientation and is more portable. The bandpass filter within the glass coating orientation recognition device effectively avoids unclear image formation caused by interference from external light sources during detection.

Description

Technical Field

[0001] This utility model relates to the field of glass testing equipment technology, and in particular to a glass coating direction identification device. Background Technology

[0002] In today's glass industry, accurate identification of the coating direction is crucial in production, processing, and usage, determining whether the coated surface is on the front or back of the glass. In deep glass processing, such as manufacturing coated glass products, clearly defining the coating direction is a key prerequisite for ensuring the precise implementation of subsequent processes, such as cutting, edging, and tempering. In glass installation and application scenarios, accurately knowing the coating direction is extremely important. This plays an indispensable role in ensuring the optical performance, thermal insulation performance, and energy efficiency of glass products. For example, in building construction, installing Low-E glass requires determining the correct coating direction to fully achieve energy-saving and emission-reduction goals, creating a comfortable indoor environment.

[0003] Currently, the identification of glass coating orientation mainly relies on spectral analysis. This involves a light source emitting light, which is reflected from two different surfaces of the glass, received by a detection component, and generates a grayscale image. The processing unit then analyzes this grayscale image to determine the glass coating surface. However, in practice, due to the complexity of the working environment, the light emitted by the light source module can be interfered with by other light sources, resulting in unclear grayscale images and consequently, low accuracy in grayscale image recognition by the processing module.

[0004] In conclusion, the glass industry urgently needs an instrument that is structurally simpler, easier to operate, and capable of accurately identifying the direction of glass coating. This would fill the gaps in the practical application of existing technologies, meet the industry's growing development needs, and optimize the production and use processes of glass coating products. Utility Model Content

[0005] In view of this, the present invention provides a glass coating direction recognition device, which can effectively avoid the influence of external light sources on the glass coating direction recognition device in complex working environments, making the imaging of the detection module clearer, thereby enabling the processing module to more accurately identify the glass coating direction.

[0006] Some embodiments of this application provide a glass coating orientation recognition device, including:

[0007] The box has a cavity inside and a light-transmitting opening on the top.

[0008] The light source is located inside the receiving cavity. The light emitted by the light source can pass through the light-transmitting opening to illuminate the surface of the glass placed in the light-transmitting opening.

[0009] A detection component is disposed within the receiving cavity and is used to receive light reflected from the surface of the glass and generate a grayscale image;

[0010] A bandpass filter assembly is disposed within a receiving cavity. The bandpass filter assembly is equipped with a bandpass filter, which is used to filter light reflected from the surface of the glass.

[0011] In one possible implementation described above, the bandpass filter includes a substrate layer and a dielectric film stack layer stacked on the substrate layer;

[0012] The dielectric film stack includes a first reflective dielectric film, a spacer layer, and a second reflective dielectric film, with the spacer layer located between the first reflective dielectric film and the second reflective dielectric film.

[0013] In one possible implementation described above, the bandpass filter further includes:

[0014] A blocking coating covers the surface of the dielectric film stack layer;

[0015] A protective layer covers the surface of the barrier coating.

[0016] In one possible implementation described above, the bandpass filter component includes:

[0017] A sleeve is used to fit over the light-receiving end of the detection component;

[0018] The slide assembly is fixedly connected to the sleeve, and the slide assembly is provided with a light-transmitting hole, and a bandpass filter is provided at the light-transmitting hole.

[0019] In one possible implementation described above, the carrier assembly includes:

[0020] The first clamping plate has a first light-transmitting hole.

[0021] The second clamping plate has a second light-transmitting hole, and a bandpass filter is disposed between the first clamping plate and the second clamping plate, corresponding to the first light-transmitting hole and the second light-transmitting hole;

[0022] A hinge, one end of which is fixed to the first clamping plate and the other end of which is fixed to the second clamping plate, to hinge the first clamping plate and the second clamping plate.

[0023] In one possible implementation described above, the first clamping plate is provided with a fixing hole, and the second clamping plate is provided with a fixing bolt. The fixing hole and the fixing bolt cooperate to fix the first clamping plate and the second clamping plate.

[0024] In one possible implementation described above, the bandpass filter component includes:

[0025] A mounting bracket is embedded in the light-transmitting opening. The mounting bracket has a groove with a hollowed-out bottom. A bandpass filter is embedded in the groove and covers the hollowed-out area.

[0026] In one possible implementation described above, the bandpass filter component includes:

[0027] The bracket is fixed to the cabinet and corresponds to the position of the light-transmitting port. The bandpass filter is fixed to the bracket.

[0028] In one possible implementation described above, the light source includes:

[0029] A light source emitting device is fixed inside the receiving cavity, with the light source emitting end of the light source emitting device facing the light-transmitting port;

[0030] A beam control device is located inside the housing cavity on one side near the light source emitting end of the light source emitting device, and is used to limit the propagation direction of the light emitted by the light source emitting device.

[0031] In one possible implementation described above, the upper surface of the housing on both sides of the light-transmitting opening is provided with slots, and the edge of the fixing bracket matches the slot.

[0032] In this invention, the light source and detection components are integrated into a single housing. The housing has a light-transmitting opening, through which light emitted from the light source illuminates the glass surface. The detection component then receives the reflected light from the glass surface and generates a grayscale image. A bandpass filter is used to filter the reflected light, effectively preventing unclear image formation due to interference from external light sources during detection. The processing unit receives the grayscale image transmitted by the detection component and analyzes it to obtain accurate detection results for the glass coating direction. This not only enables contactless detection but also enhances portability. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a glass coating orientation recognition device in some existing embodiments;

[0034] Figure 2 This is a schematic diagram of the glass coating orientation recognition device in the first embodiment of this application;

[0035] Figure 3 This is a schematic diagram of light emitted by the light source in the first embodiment of this application being reflected by glass;

[0036] Figure 4 This is a schematic diagram of the bandpass filter assembly in the first embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the structure of the wafer carrier assembly in the first embodiment of this application;

[0038] Figure 6 This is a schematic diagram of the glass coating orientation recognition device in the second embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the glass coating orientation recognition device in the third embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1a. Light emitter; 2a. Detection component; 1. Light source; 2. Detection assembly; 3. Processing unit; 4. Data cable; 5. Coated glass; 6. Housing; 7. Light transmission port; 8. Circuit board; 9. Bandpass filter assembly; 10. Receiving cavity;

[0042] 11. Light source emitting device; 12. Beam control device; 13. Incident light ray; 14. First reflected light ray; 15. Second reflected light ray; 16. First filtered light ray; 17. Second filtered light ray; 18. Grayscale image;

[0043] 21. Lens; 22. Camera;

[0044] 91. Sleeve; 92. Slide assembly; 93. Fixture; 94. Support; 95. Bandpass filter;

[0045] 921. First clamping plate; 922. First light-transmitting hole; 923. Second clamping plate; 924. Hinge; 925. Fixing hole; 926. Fixing bolt;

[0046] 931. Groove; 932. Slot. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0048] To facilitate understanding of the coating direction recognition device technical solution of the embodiments of this application, the technical problem to be solved by the embodiments of this application will be explained first.

[0049] The working principle of the glass coating orientation recognition device will be explained first, followed by a combination of... Figure 1 This section explains the problems with the glass coating orientation recognition devices in some existing embodiments.

[0050] In today's glass industry, accurate identification of the coating direction is crucial in the production, processing, and use processes. This is because it determines whether the coated surface is on the front or back of the glass. For glass applications and further processing, clearly defining the coating direction is essential to ensuring the precise implementation of subsequent procedures.

[0051] Due to the unique properties of many glass coating materials, contact-based coating orientation identification methods can damage the glass coating, rendering the coated glass unusable. Currently, non-contact glass coating orientation identification primarily relies on spectral analysis. A light source emits light, which is reflected from two different surfaces of the glass. The reflected light is received by a detection component, generating a grayscale image. The processing unit then analyzes this grayscale image to determine the glass coating surface.

[0052] refer to Figure 1 , Figure 1 Schematic diagrams of glass coating orientation recognition devices in some embodiments are shown. For example... Figure 1 As shown, in order to achieve non-contact identification of the glass coating direction, the glass coating direction identification device includes: a light emitter 1a, a detection component 2a, a processing unit 3, and a data line 4.

[0053] The processing unit 3 sends a control signal to the light emitter 1a via the data line 4, causing the light emitter 1a to emit light towards the coated glass 5. The detection component 2a receives the light reflected from the surface of the coated glass 5 and generates a grayscale image. The processing unit 3 receives the grayscale image generated by the detection component 2a via the data line 4 and calculates the glass coating direction recognition result.

[0054] However, the aforementioned glass coating orientation recognition device has the following problems:

[0055] (1) The equipment is large and not easy to carry.

[0056] (2) In actual operation, due to the complexity of the working environment, the light emitted by the light source will be interfered with by other light in the working environment, resulting in unclear grayscale image imaging, which makes the glass coating direction calculated by the processing unit 3 inaccurate.

[0057] To address the problem of inaccurate glass coating orientation detection described above, embodiments of this application provide a glass coating orientation recognition device. This device includes a housing, and a light source, a detection component, and a bandpass filter component housed within the housing. The housing has a light-transmitting opening. Light emitted from the light source passes through this opening and illuminates the surface of the coated glass placed within it. After reflection from the glass surface, the emitted light is filtered by the bandpass filter of the bandpass filter component before being received and processed by the detection component.

[0058] Compared to existing glass coating orientation recognition devices, the glass coating orientation recognition device provided in this application integrates the light source, detection component, and bandpass filter component into a single housing, improving its portability. The bandpass filter component within the device filters light reflected from the glass surface, resulting in a clearer grayscale image generated by the detection component and thus more accurate glass coating orientation recognition results calculated by the processing unit.

[0059] The glass coating orientation recognition device of this application embodiment will be described in detail below with reference to the accompanying drawings.

[0060] refer to Figure 2 , Figure 2 A schematic diagram of the structure of a glass coating orientation recognition device according to an embodiment of this application is shown. Figure 2 As shown, the glass coating orientation recognition device includes: a light source 1, a detection component 2, a processing unit 3, a data cable 4, a housing 6, and a light-transmitting port 7.

[0061] The enclosure 6 has a receiving cavity 10 and a light-transmitting opening 7. During testing, the glass can be placed on the outside of the enclosure 6 at the light-transmitting opening 7 so that the components inside the enclosure 6 can inspect the surface of the coated glass 5.

[0062] The light source 1 may include a light source emitting device 11 and a beam control device 12. The light source emitting device 11 is fixed inside the receiving cavity, and the light source emitting end of the light source emitting device 11 faces the light-transmitting opening 7. The beam control device 12 is located inside the receiving cavity 10 on the side near the light source emitting end of the light source emitting device 11. The light source emitting device 11 emits light through its light source emitting end toward the glass placed at the light-transmitting opening 7 on the outside of the housing 6. The beam control device 12 is used to limit the size and range of the beam emitted by the light source emitting device 11.

[0063] The detection component 2 is disposed within the receiving cavity 10, and the detection component 2 and the light source 1 are located on opposite sides of the light-transmitting opening 7, respectively. The detection component 2 is used to collect reflected light from the front and back of the glass and generate a grayscale image.

[0064] The bandpass filter assembly 9 is mounted on the lens 21 of the detection assembly 2. The bandpass filter assembly 9 is equipped with a bandpass filter, which is used to filter the light reflected from the surface of the glass, so that the grayscale image generated by the detection assembly 2 based on the filtered reflected light can more accurately identify the coating condition of the glass surface.

[0065] refer to Figure 3 , Figure 3 A schematic diagram is shown showing light emitted from a light source reflected by glass. (Example) Figure 3As shown, the incident light 13 emitted by the light source emitting device passes through the light-transmitting aperture 7 and illuminates the coated glass 5. After being reflected from the front of the coated glass 5, it becomes a first reflected light 14 and a second reflected light 15 after being reflected from the back. The first reflected light 14 is filtered by a bandpass filter 95 to obtain a first filtered light 16. The second reflected light 15 is filtered by a bandpass filter 95 to obtain a second filtered light 17. The first filtered light 16 and the second filtered light 17 are acquired by the detection component to generate a corresponding grayscale image 18. This grayscale image 18 can more accurately analyze whether the surface of the glass is coated.

[0066] It should be noted that a bandpass filter allows light within a specific wavelength range to pass through while blocking or absorbing light of other wavelengths. In this embodiment, the light source emitting device 11 is a white LED lamp with a wavelength range of 450nm-465nm. Therefore, a bandpass filter with a center wavelength range of 450nm-640nm and a half-width at half-maximum (HWHM) range of 80nm-240nm can be selected. This not only covers the main visible light band of the white LED but is also wide enough to retain the complete spectrum of white light.

[0067] According to the glass coating orientation recognition device of this application, all components are integrated into a housing, making the entire device more portable. Furthermore, the cooperation of the components effectively avoids the problem of unclear image imaging caused by interference from external light sources during detection. Thus, the processing unit receives the grayscale image transmitted by the detection component and can analyze it to obtain accurate glass coating orientation detection results.

[0068] In some embodiments, a bandpass filter may include a substrate layer (not shown) and a stack of dielectric films (not shown) stacked on the substrate layer. The stack of dielectric films includes a first reflective dielectric film, a spacer layer, and a second reflective dielectric film, with the spacer layer located between the first and second reflective dielectric films. The substrate layer serves as the basic supporting structure of the bandpass filter, providing an adhesion surface for the multilayer films and ensuring their stability and uniformity. The first and second reflective dielectric films utilize the principle of light interference; light of different wavelengths undergoes multiple reflections and interferences between the layers of the reflective dielectric films, causing light outside a specific wavelength range to be reflected away, while light within the specific wavelength range can be partially transmitted. The spacer layer is used to adjust the distance between the layers of the reflective dielectric films, thereby controlling the light interference effect and further optimizing the performance of the bandpass filter.

[0069] In other embodiments, the bandpass filter may further include a blocking coating (not shown) and a protective layer (not shown). The blocking coating covers the surface of the dielectric film stack, and the protective layer covers the surface of the blocking coating. The blocking layer is typically made of a high-absorption or high-reflectivity material, reducing the transmission of light outside a specific wavelength range by absorbing or reflecting that light. The blocking layer further suppresses the transmission of light outside the specific wavelength range, increasing the stopband depth of the bandpass filter. The protective layer is typically made of a hard, transparent material, such as silicon dioxide (SiO2), providing physical and chemical protection against environmental influences such as dust, moisture, and mechanical damage, while having minimal impact on optical performance.

[0070] The beam control device 12 can be a linear aperture or a collimating lens. The shape and size of the linear aperture opening can be adjusted to limit the size and range of the beam entering the coated glass 5, preventing excessive light from entering and thus reducing the quality of the grayscale image generated by the detection component 2. Furthermore, the collimating lens can focus the light emitted by the light source emitting device 11 to a single point, and the detection component 2 receives the reflected light from the coated glass 5, thereby forming a clearer grayscale image.

[0071] It is understood that the glass coating orientation recognition device in this embodiment can be communicatively connected to the processing unit 3 to facilitate the processing of grayscale images. The two can be two independent parts. The processing unit 3 can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. In this embodiment, the processing unit can be an electronic device with a display screen, such as a mobile phone, tablet computer, computer with wireless transceiver capabilities, or a wireless terminal in industrial control. Figure 2 As shown, the glass coating orientation recognition device of this application may further include a circuit board 8. Furthermore, the housing 6 is provided with an adapter port (not shown) and a USB interface (not shown). One end of the adapter port is connected to a power source (not shown) via a data cable 4, and the other end is connected to the circuit board 8 via a data cable 4 to power the glass coating orientation recognition device. The circuit board 8 is connected to the light source 1 and the detection component 2 via data cables 4 for power supply and data transmission. One end of the USB interface is connected to the processing unit 3 via a data cable 4, and the other end is connected to the circuit board 8 via a data cable 4 for data transmission. In addition, the circuit board 8 is also provided with a fan (not shown) to effectively dissipate heat from the circuit board.

[0072] In some embodiments, such as Figure 4As shown, the bandpass filter assembly may include a sleeve 91 and a slide assembly 92. The sleeve 91 is used to fit onto the lens of the detection assembly. The slide assembly 92 is fixedly connected to the sleeve 91, and the slide assembly 92 has a light-transmitting hole (not shown), at which a bandpass filter 95 is provided.

[0073] Compared to existing glass coating orientation recognition devices, the glass coating orientation recognition device of this application, by mounting a bandpass filter assembly on the lens of the detection assembly, can not only effectively filter out light other than light reflected from the surface of the glass, but also easily replace the bandpass filter assembly, thereby realizing the replacement of the bandpass filter 95 according to different wavelength light sources 1.

[0074] In some embodiments, such as Figure 5 As shown, the carrier assembly 92 includes a first clamping plate 921, a second clamping plate 923, a sleeve 91, and a hinge 924.

[0075] The first clamping plate 921 has a first light-transmitting hole 922, and the second clamping plate 923 has a second light-transmitting hole (not shown). A bandpass filter 95 is disposed between the first clamping plate 921 and the second clamping plate 923, corresponding to the first light-transmitting hole 922 and the second light-transmitting hole, so that reflected light can pass through the bandpass filter 95 for filtering. The sleeve 91 is connected to the second light-transmitting hole, so that the filtered light can be received by the detection component.

[0076] One end of the hinge 924 is fixed to the first clamping plate 921, and the other end is fixed to the second clamping plate 923, thus hinged the first clamping plate 921 and the second clamping plate 923. The first clamping plate 921 is provided with a fixing hole 925, and the second clamping plate 923 is provided with a fixing bolt 926. The fixing hole 925 and the fixing bolt 926 cooperate to fix the first clamping plate 921 and the second clamping plate 923, so that the bandpass filter 95 is clamped between the first clamping plate 921 and the second clamping plate 923 and is not easy to fall off.

[0077] It should be noted that the design of hinge 924 allows the first clamping plate 921 and the second clamping plate 923 to open and close relative to each other, thus facilitating the installation and removal of the bandpass filter 95. Compared with some fixed installation methods, this structure eliminates the need to remove the sleeve 91 from the lens 21 of the detection assembly 2. This not only allows for quick removal or insertion of the filter, improving operational efficiency, but also highlights its convenience, especially in scenarios where frequent filter replacements are required. Furthermore, it effectively avoids wear and tear on the lens 21 caused by frequent movement of the sleeve 91 due to repeated replacements of the bandpass filter 95.

[0078] refer to Figure 6 , Figure 6 A schematic diagram of the structure of a glass coating orientation recognition device according to a second embodiment of this application is shown. Figure 6 The glass coating orientation recognition device shown is Figure 2 Compared to the glass coating orientation recognition device shown, the differences lie in the placement of the bandpass filter, its structure, and the method of fixing, while the rest of the structure remains the same (i.e., Figure 2 The components include: 1. Light source; 2. Detection component; 3. Processing unit; 4. Circuit board; 5. USB interface and adapter port. The following details the components. Figure 6 The differences between the glass coating orientation recognition devices shown will be explained in detail, while the similarities will not be repeated.

[0079] like Figure 6 As shown, a bandpass filter assembly is disposed at the light-transmitting opening 7. The bandpass filter assembly includes a fixing frame 93, which is disposed inside the light-transmitting opening 7. The fixing frame 93 has a groove 931, and the bottom of the groove 931 is hollowed out. The bandpass filter 95 is embedded in the groove 931.

[0080] The upper surface of the box 6 on both sides of the light-transmitting opening 7 is provided with a slot 932, and the edge of the fixing bracket 93 matches the slot 932.

[0081] It should be noted that by providing slots 932 on the upper surface of the box 6 on both sides of the light-transmitting port 7, the edge of the fixing 93 matches the slot 932, which not only filters out light other than the light reflected from the surface of the glass, but also keeps the contact surface between the box 6 and the coated glass 5 flat, avoiding scratches on the coated surface.

[0082] refer to Figure 7 , Figure 7 A schematic diagram of the structure of a glass coating orientation recognition device according to a third embodiment of this application is shown. Figure 7 The glass coating orientation recognition device shown is Figure 2 Compared to the glass coating orientation recognition device shown, the difference lies in the placement and structure of the bandpass filter component, while the rest of the structure is the same (i.e., Figure 2 The components include: 1. Light source; 2. Detection assembly; 3. Processing unit; 6. Housing; 8. Circuit board; 9. USB interface and adapter port. The following details the components. Figure 7 The differences between the glass coating orientation recognition devices shown will be explained in detail, while the similarities will not be repeated.

[0083] like Figure 7 As shown, the bandpass filter assembly includes: a bracket 94, which is fixed on the housing 6 and corresponds to the light-transmitting port 7, and a bandpass filter 95 is fixed on the bracket 94.

[0084] It should be noted that fixing the bandpass filter 95 on the bracket 94 and setting the bracket 94 on the housing 6 relative to the light-transmitting port 7 can not only filter out light other than the light reflected from the glass surface, but also effectively avoid damage to the bandpass filter 95 when the glass coating direction recognition device collides with other objects, thereby reducing the frequency of replacing the bandpass filter 95.

[0085] The above description illustrates the implementation of this application through specific embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details have been omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0086] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0087] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0088] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0089] In the description of this application, it should be noted that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0090] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fit" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0091] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A glass coating direction recognition device, characterized by, include: The box body has a receiving cavity inside and a light-transmitting opening on the box body; A light source is disposed within the receiving cavity, and the emitted light from the light source can pass through the light-transmitting opening to illuminate the surface of the glass placed in the light-transmitting opening; A detection component is disposed within the receiving cavity and is used to receive light reflected from the surface of the glass and generate a grayscale image; A bandpass filter assembly is disposed within the receiving cavity. The bandpass filter assembly includes a bandpass filter for filtering light reflected from the surface of the glass.

2. The glass coating direction recognition device according to claim 1, wherein The bandpass filter includes a substrate layer and a dielectric film stack layer stacked on the substrate layer; The dielectric film stack includes a first reflective dielectric film, a spacer layer, and a second reflective dielectric film, wherein the spacer layer is located between the first reflective dielectric film and the second reflective dielectric film.

3. The glass coating orientation recognition device according to claim 2, characterized in that, The bandpass filter further includes: A blocking coating, the blocking coating covering the surface of the dielectric film stack layer; A protective layer that covers the surface of the blocking coating.

4. The glass coating orientation recognition device according to claim 1, characterized in that, The bandpass filter component includes: A sleeve is used to be fitted onto the light-receiving end of the detection component; The slide assembly is fixedly connected to the sleeve, and the slide assembly is provided with a light-transmitting hole, at which the bandpass filter is provided.

5. The glass coating orientation identification device according to claim 4, characterized in that, The wafer carrier assembly includes: A first clamping plate, wherein a first light-transmitting hole is provided on the first clamping plate; The second clamping plate has a second light-transmitting hole, and the bandpass filter is disposed between the first clamping plate and the second clamping plate, and corresponds to the first light-transmitting hole and the second light-transmitting hole; A hinge, one end of which is fixed to the first clamping plate and the other end of which is fixed to the second clamping plate, to hinge the first clamping plate and the second clamping plate.

6. The glass coating orientation recognition device according to claim 5, characterized in that, The first clamping plate is provided with a fixing hole, and the second clamping plate is provided with a fixing bolt. The fixing hole and the fixing bolt cooperate to fix the first clamping plate and the second clamping plate.

7. The glass coating orientation identification device according to claim 1, characterized in that, The bandpass filter component includes: A fixing frame is embedded in the light-transmitting opening. The fixing frame has a groove, and the bottom of the groove is hollowed out. The bandpass filter is embedded in the groove and covers the hollowed-out area.

8. The glass coating orientation recognition device according to claim 1, characterized in that, The bandpass filter component includes: A bracket is fixed to the housing and corresponds to the position of the light-transmitting port; the bandpass filter is fixed to the bracket.

9. The glass coating orientation identification device according to claim 1, characterized in that, The light source includes: A light source emitting device is fixed inside the receiving cavity, and the light source emitting end of the light source emitting device faces the light-transmitting port; A beam control device is disposed within the accommodating cavity on one side near the light source emitting end of the light source emitting device, and is used to limit the propagation direction of the light emitted by the light source emitting device.

10. The glass coating orientation recognition device according to claim 7, characterized in that, The upper surface of the box on both sides of the light-transmitting opening is provided with a slot, and the edge of the fixing frame matches the slot.

Images