Waveguide sheet detection device

Abstract

The utility model discloses a waveguide sheet detection device. The waveguide sheet detection device comprises a base plate; the adjusting assembly is arranged on the bottom plate; the light source is arranged on the adjusting assembly, and the adjusting assembly can adjust the position and the angle of the light source; the auto-collimation piece is arranged on the side, away from the light source, of the bottom plate; the spectroscope is arranged on one side, deviating from the auto-collimation piece, of the bottom plate; wherein the waveguide sheet is arranged between the auto-collimation piece and the spectroscope, the waveguide sheet is arranged on one side, close to the spectroscope, of the bottom plate, a light beam emitted by the light source is emitted to the waveguide sheet, the waveguide sheet receives the light beam and transmits the light beam to the spectroscope, and the spectroscope transmits part of the light beam to form a first test light beam and reflects the other part of the light beam to the auto-collimation piece; the auto-collimation member receives the other part of the light beam and reflects the other part of the light beam to form a second test light beam, and the first test light beam and the second test light beam are observed to complete detection. According to the waveguide sheet detection device provided by the utility model, the detection efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to light effect test technical field especially, it is waveguide sheet detection device. BACKGROUND

[0002] Augmented reality (AR) glasses are an important part of smart wearable devices, and are widely used in games, education, navigation and industrial design fields, and the like, and light waveguide AR glasses are an optical system composed of an optical machine and a light waveguide, and the performance of the light waveguide directly affects the image display quality of the AR glasses, and a high-quality light waveguide can ensure that the image provided by the optical machine remains clear and has its original contrast during transmission, and therefore, it is crucial to detect the performance of the light waveguide during production.

[0003] However, in the existing detection system, the position of the light source is usually fixed, and when the relative position between the light source and the light waveguide needs to be adjusted, the light waveguide needs to be slowly rotated to adjust the angle, which reduces the detection efficiency, and the product is easily damaged during the adjustment of the angle of the light waveguide. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a waveguide sheet detection device, which can improve the detection efficiency.

[0005] According to the waveguide sheet detection device of the utility model, the waveguide sheet detection device comprises:

[0006] a bottom plate;

[0007] an adjusting assembly arranged on the bottom plate;

[0008] a light source arranged on the adjusting assembly and configured to emit a light beam, and the adjusting assembly is configured to adjust the position and angle of the light source;

[0009] a self-collimating member arranged on a side of the bottom plate away from the light source;

[0010] a beam splitter arranged on a side of the bottom plate away from the self-collimating member;

[0011] The waveguide sheet is arranged between the self-collimating element and the light splitting mirror, and is arranged on the side of the bottom plate close to the light splitting mirror. The light source emits a light beam towards the waveguide sheet. The waveguide sheet receives the light beam and transmits the light beam to the light splitting mirror. The light splitting mirror transmits part of the light beam to form a first test light beam, and reflects another part of the light beam to the self-collimating element. The self-collimating element receives the other part of the light beam and reflects the other part of the light beam to form a second test light beam. The first test light beam and the second test light beam are received to complete detection.

[0012] In some embodiments, the adjustment assembly includes a displacement adjustment element and an angle adjustment element. The displacement adjustment element includes an X-axis adjustment element and a Z-axis adjustment element. The angle adjustment element includes an Rx-axis adjustment element, an Ry-axis adjustment element, and an Rz-axis adjustment element.

[0013] In some optional embodiments, the adjustment assembly further includes a light source mounting element. The light source is detachably mounted on the light source mounting element.

[0014] In some embodiments, the light splitting mirror is a half-mirror.

[0015] In some embodiments, the bottom plate is a transparent plate.

[0016] Alternatively, the bottom plate is provided with a hollowed-out area. The waveguide sheet is partially arranged in the hollowed-out area, so that the other part of the light beam can be emitted towards the self-collimating element.

[0017] In some embodiments, the self-collimating element is fixed to the bottom plate by screw connection.

[0018] In some optional embodiments, the side of the bottom plate away from the light source is provided with four threaded connection columns. The threaded connection columns are provided with internal threads. The self-collimating element is provided with a through hole. The waveguide sheet detection device further includes a screw. The screw passes through the through hole and is connected to the connection column, so that the self-collimating element is fixed to the bottom plate.

[0019] In some embodiments, a support leg is further included. The support leg is arranged on the side of the bottom plate close to the self-collimating element. The support leg is used to support the bottom plate.

[0020] In some embodiments, a probe is further included. The probe is used to receive the first test light beam and the second test light beam to complete detection.

[0021] In some embodiments, the self-collimating element is an array corner reflector.

[0022] According to the waveguide sheet detection device of the utility model, through setting adjusting assembly, and light source is set on adjusting assembly, thereby can utilize adjusting assembly adjustment light source's position and angle, make light source and waveguide sheet's installation and adjustment are more convenient, can switch different waveguide sheet and detect fast, improve detection efficiency greatly, simultaneously, waveguide sheet can not use after installation and adjust, avoid to waveguide sheet produce damage, promote product yield.

[0023] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the three-dimensional schematic view of waveguide sheet detection assembly according to one embodiment of the utility model;

[0025] Figure 2 It is the side view of waveguide sheet detection assembly according to one embodiment of the utility model;

[0026] Figure 3 It is the schematic view of autocollimator according to one embodiment of the utility model;

[0027] Figure 4 It is the light path schematic view of corner reflector according to one embodiment of the utility model.

[0028] Reference signs:

[0029] 1000: waveguide sheet detection device;100: bottom plate;110: threaded connecting column;200: adjusting assembly;210: X-axis adjusting piece;220: Z-axis adjusting piece;230: Rz-axis adjusting piece;240: Ry-axis adjusting piece;250: Rx-axis adjusting piece;260: light source mounting piece;300: light source;400: autocollimator;500: beam splitter;600: support leg;

[0030] a: waveguide sheet. DETAILED DESCRIPTION

[0031] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0032] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, which in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the applicability of other processes and / or the use of other materials.

[0033] The following description refers to Figures 1-4 The waveguide sheet detection device 1000 according to the embodiments of the present application is described below, which comprises a bottom plate 100, an adjusting assembly 200, a light source 300, a self-collimating element 400 and a beam splitter 500, wherein the bottom plate 100 is used to support other components.

[0034] Please refer to Figures 1-2 Further, the adjusting assembly 200 is arranged on the bottom plate 100; the light source 300 is arranged on the adjusting assembly 200, wherein the adjusting assembly 200 can adjust the position and angle of the light source 300; the light source 300 is used to emit a light beam, and it can be understood that the light beam emitted by the light source 300 is directed to the waveguide sheet a, and by adjusting the position and angle of the light source 300 by using the adjusting assembly 200, the light beam can be incident on the waveguide sheet a at a suitable angle.

[0035] Please continue to refer to Figures 1-2 Further, the self-collimating element 400 is arranged on the side of the bottom plate 100 away from the light source 300; it should be noted that the bottom plate 100 is a plate-like structure, and the bottom plate 100 comprises a first surface and a second surface arranged opposite to each other, wherein the light source 300 is arranged on one side of the first surface, and the self-collimating element 400 is arranged on one side of the second surface. The self-collimating element 400 is an element that can return light along the original path after multiple reflections, and the specific structure of the self-collimating element 400 is not limited in the embodiments of the present application, as long as the light beam directed to the self-collimating element 400 can return along the original path after multiple reflections.

[0036] Please continue to refer to Figures 1-2 Further, the beam splitter 500 is arranged on the side of the bottom plate 100 away from the self-collimating element 400; that is, the beam splitter 500 is arranged on one side of the first surface of the bottom plate 100. The beam splitter 500 can divide the light beam incident on the beam splitter 500 into a transmitted light beam and a reflected light beam, and the propagation paths of the transmitted light beam and the reflected light beam are different, thereby realizing beam splitting, and the light intensity ratio of the transmitted light beam and the reflected light beam can be set according to specific requirements, and the embodiments of the present application do not limit this.

[0037] The waveguide sheet a is arranged between the collimator 400 and the beam splitter 500, and the waveguide sheet is arranged on the side of the base plate 100 close to the beam splitter 500, the light beam emitted by the light source 300 is incident on the waveguide sheet a, the waveguide sheet a receives the light beam and transmits the light beam to the beam splitter 500, the beam splitter 500 transmits part of the light beam to form the first test light beam, and reflects another part of the light beam to the collimator 400, the collimator 400 receives another part of the light beam and reflects another part of the light beam to form the second test light beam, and the first test light beam and the second test light beam are received to complete the detection.

[0038] Specifically, the base plate 100 can be placed on a horizontally stable workbench, the adjusting assembly 200, the collimator 400 and the beam splitter 500 are installed on the base plate 100, the light source 300 is installed on the adjusting assembly 200, the waveguide sheet detection device 1000 can work normally, then the light source 300 is calibrated, the light intensity and spectral characteristics of the light source 300 are adjusted to achieve the required test conditions, the waveguide sheet a to be detected is installed on the base plate 100, the position and angle of the light source 300 are adjusted, so that the light beam emitted by the light source 300 can be incident on the waveguide sheet a at a suitable angle, the position and angle of the light source 300 are fine adjusted by the adjusting assembly 200, so that the first test light beam and the second test light beam are parallel, and the operator directly observes the first test light beam and the second test light beam, so that the detection of the waveguide sheet a is completed.

[0039] The inventor found in actual research that in the existing detection system, the position of the light source is usually fixed, and when the relative position between the light source and the optical waveguide needs to be adjusted, the optical waveguide needs to be slowly rotated to adjust the angle, which reduces the detection efficiency, and the product is easily damaged during the adjustment of the angle of the optical waveguide.

[0040] Therefore, according to the waveguide sheet detection device 1000 of the utility model, the adjusting assembly 200 is arranged, and the light source 300 is arranged on the adjusting assembly 200, so that the position and angle of the light source 300 can be adjusted by the adjusting assembly 200, the installation and adjustment of the light source 300 and the waveguide sheet are more convenient, different waveguide sheets can be quickly switched for detection, the detection efficiency is greatly improved, and the product yield is improved after the waveguide sheet is installed without adjustment.

[0041] It can be understood that the collimator 400, the beam splitter 500 and the waveguide sheet a can be arranged in parallel, so as to further reduce the difficulty of adjusting the light source 300 and further improve the detection efficiency.

[0042] In some other embodiments, the light source 300 can adjust different parameters according to different test environments, so as to ensure the accuracy and reliability of the detection.

[0043] Please continue to refer to Figures 1-2 In some embodiments, the adjusting assembly 200 includes displacement adjusting members and angle adjusting members, the displacement adjusting members include an X-axis adjusting member 210 and a Z-axis adjusting member 220, and the angle adjusting members include an Rx-axis adjusting member 250, an Ry-axis adjusting member 240, and an Rz-axis adjusting member 230. It can be understood that the X-axis adjusting member 210 can move the light source 300 along the X-axis direction, the Z-axis adjusting member 220 can move the light source 300 along the Z-axis, the Rx-axis adjusting member 250 can rotate the light source 300 around the X-axis, the Ry-axis adjusting member 240 can rotate the light source 300 around the Y-axis, and the Rz-axis adjusting member 230 can rotate the light source 300 around the Z-axis. Among them, as shown in the figure, the X-axis direction (such as the X direction in the figure), the Y-axis direction (such as the Y direction in the figure), and the Z-axis direction (such as the Z direction in the figure) are perpendicular to each other. Figure 1 Figure 1 Figure 1 Figure 1

[0044] Specifically, the Rx-axis adjusting member 250 can include coarse adjustment components and fine adjustment components, wherein the coarse adjustment components can be used to make the light beam emitted by the light source 300 to be incident to the waveguide sheet a at a suitable angle, and the fine adjustment components can be used to adjust the light source 300 again to make the first test light beam and the second test light beam parallel. It can be understood that the Ry-axis adjusting member 240 and the Rz-axis adjusting member 230 can also include coarse adjustment components and fine adjustment components, and the embodiments of the present application do not limit this.

[0045] Therefore, by arranging the X-axis adjusting member 210, the Z-axis adjusting member 220, the Rx-axis adjusting member 250, the Ry-axis adjusting member 240, and the Rz-axis adjusting member 230, the position and angle of the light source 300 can be quickly and accurately adjusted, which further improves the detection efficiency and further ensures the accuracy of the detection.

[0046] It can be understood that in other embodiments of the present application, a Y-axis adjusting member can also be included for adjusting the position of the light source in the Y-axis direction, and of course, the embodiments of the present application do not limit this, and the relative position of the light source and the waveguide sheet a in the Y direction can also be fixed by limiting the waveguide sheet a in the Y direction.

[0047] Please continue to refer to Figures 1-2 ​​​​In some optional embodiments, the adjusting assembly 200 further comprises a light source mounting member 260, and the light source 300 is detachably mounted on the light source mounting member 260. Specifically, for example, the light source mounting member 260 can be provided with a buckle structure, and the light source 300 is detachably mounted on the light source mounting member 260 through the buckle structure. Therefore, the installation and adjustment of the light source 300 are more convenient, and the detection efficiency is further improved.

[0048] Please continue to refer to Figures 1-2 In some embodiments, the beam splitter 500 is a half-mirror. That is, for the light beam incident to the beam splitter 500, the beam splitter 500 can reflect 50% of the light beam to form the first test light beam, and transmit 50% of the light beam to the collimator 400, and form the second test light beam after being reflected by the collimator 400. Therefore, the light intensity of the first test light beam and the second test light beam is substantially the same, thereby facilitating the observation of the first test light beam and the second test light beam, and further ensuring the accuracy of detection.

[0049] Please continue to refer to Figures 1-2 In some embodiments, the bottom plate 100 is a transparent plate, or the bottom plate 100 is provided with a hollow region, and the waveguide sheet a is partially arranged in the hollow region, so that another part of the light beam can be incident to the collimator 400.

[0050] It should be noted that the light beam reflected by the beam splitter 500 needs to be reflected to the collimator 400. Since the beam splitter 500 and the collimator 400 are respectively arranged on the opposite sides of the bottom plate 100, the bottom plate 100 needs to be arranged as a transparent plate, or a hollow region is arranged on the bottom plate 100, so that the light beam reflected by the beam splitter 500 can be transmitted to the collimator 400, and after being reflected by the collimator 400, the second test light beam can be formed by transmitting through the bottom plate 100.

[0051] Therefore, when the bottom plate 100 is arranged as a transparent plate, on the one hand, the transparent plate does not block the light, and on the other hand, the transparent plate has high strength, which is conducive to improving the stability of the waveguide sheet detection device 1000, and further ensuring the accuracy of detection; when the bottom plate 100 is a hollow plate, the hollow bottom plate 100 does not cause attenuation of the light, thereby further ensuring the accuracy of detection.

[0052] Please continue to refer to Figures 1-2 In some embodiments, the collimator 400 is fixed on the bottom plate 100 by screw connection. Therefore, the collimator 400 is fixed on the bottom plate 100 by screw connection, and the installation and adjustment of the waveguide sheet detection device 1000 are more convenient, thereby improving the detection efficiency; and the stability of the installation of the collimator 400 can be ensured by screw connection, thereby further ensuring the accuracy of detection.

[0053] Please continue to refer toFigures 1-2 In some optional embodiments, four threaded connecting columns 110 are arranged on the side of the bottom plate 100 away from the light source 300, the threaded connecting columns 110 are internally threaded, the autocollimator 400 is provided with through holes, and the waveguide sheet detection device 1000 further comprises screws, the screws pass through the through holes and are connected with the connecting columns, so that the autocollimator 400 is fixed on the bottom plate 100.

[0054] In this way, by arranging the threaded connecting columns 110, the autocollimator 400 and the bottom plate 100 are spaced apart by a distance, thereby increasing the optical path of the light beam reflected by the beam splitter 500, and further ensuring the accuracy of detection.

[0055] Please continue to refer to Figures 1-2 It can be understood that, similar to the fixing mode of the autocollimator 400 and the base described above, the beam splitter 500 can also be fixed to the bottom plate 100 by screw connection, and the embodiments of the utility model are not limited thereto, for example, in the present embodiment, the beam splitter 500 can also be directly placed on the waveguide sheet, so that the beam splitter 500 splits the light rays coupled out by the waveguide sheet a.

[0056] Please continue to refer to Figures 1-2 In some embodiments, supporting legs 600 are further arranged on the side of the bottom plate 100 close to the autocollimator 400, and the supporting legs 600 are used for supporting the bottom plate 100. In this way, by supporting the bottom plate 100 by means of the supporting legs 600, the waveguide sheet detection device 1000 can adapt to more test environments. Specifically, the supporting legs 600 can be provided with four, four supporting legs 600 are arranged on the four corners of the bottom plate 100, of course, in order to improve the stability of the waveguide sheet detection device 1000, the supporting legs 600 can also be provided with five, six, seven, eight and the like, and the embodiments of the utility model are not limited thereto.

[0057] Please continue to refer to Figures 1-2 In some embodiments, a detector is further included, and the detector is used for receiving the first test light beam and the second test light beam to complete detection. In this way, by using the detector to receive the first test light beam and the second test light beam, the test result can be quantified, and the accuracy of detection is further ensured, and at the same time, after removing the detector, subjective observation can be performed again by the human eye, so that the accuracy of detection is further ensured by subjective observation and objective quantification.

[0058] Specifically, in some embodiments, the detector can be an industrial camera or the like, and the embodiments of the utility model are not limited thereto.

[0059] Please refer to Figure 3 and Figure 4In some embodiments, the collimating element 400 is an array corner reflector. It can be appreciated that the collimating element 400 is an element that reflects light multiple times and allows the light to return along the original path. In particular, as shown in Figure 4 Figure 4 FIG. 2 is a schematic diagram of a corner reflector with two reflecting surfaces S1 and S2 that are perpendicular to each other, such that it can be seen that a light ray AB that is incident on the corner reflector is reflected by the surfaces S1 and S2 such that the reflected light ray CD is parallel to the light ray AB, thereby allowing the light ray to return along the original path.

[0060] As shown in Figure 3 In this embodiment, the collimating element 400 is an array corner reflector, which is an element formed by a series of arrayed triangular prisms, each of which has two internal reflecting surfaces that are perpendicular to each other, and the internal reflecting surfaces of adjacent triangular prisms are perpendicular to each other, such that the collimating element 400 can reflect light multiple times and allow the light to return along the original path.

[0061] Of course, the present embodiment is not limited thereto, and as long as the collimating element 400 can reflect light multiple times and allow the light to return along the original path.

[0062] Therefore, by setting the collimating element 400 as an array corner reflector, the structure of the collimating element 400 is simple and the cost is low, thereby reducing the production cost of the waveguide sheet.

[0063] Other configurations and operations of the waveguide sheet detection device 1000 according to the present embodiment are known to those skilled in the art, and will not be described in detail herein.

[0064] In the description of the present application, it should be understood that 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0065] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.​

[0066] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0068] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0069] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A waveguide sheet testing device for testing waveguide sheets, characterized in that, The waveguide sheet detection device comprises: a bottom plate; an adjusting assembly arranged on the bottom plate; a light source arranged on the adjusting assembly for emitting a light beam, the adjusting assembly being capable of adjusting the position and angle of the light source; a self-collimating element arranged on the side of the bottom plate away from the light source; a beam splitter arranged on the side of the bottom plate away from the self-collimating element; wherein the waveguide sheet is arranged between the self-collimating element and the beam splitter, and is arranged on the side of the bottom plate close to the beam splitter, the light beam emitted by the light source is directed to the waveguide sheet, the waveguide sheet receives the light beam and transmits the light beam to the beam splitter, the beam splitter transmits part of the light beam to form a first test light beam, and reflects another part of the light beam to the self-collimating element, the self-collimating element receives the other part of the light beam and reflects the other part of the light beam to form a second test light beam, and the first test light beam and the second test light beam are received to complete detection.

2. The waveguide sheet detection apparatus according to claim 1, wherein The adjusting assembly comprises a displacement adjusting element and an angle adjusting element, the displacement adjusting element comprises an X-axis adjusting element and a Z-axis adjusting element, and the angle adjusting element comprises an Rx-axis adjusting element, an Ry-axis adjusting element and an Rz-axis adjusting element.

3. The waveguide sheet detection apparatus according to claim 2, wherein The adjusting assembly further comprises a light source mounting element, and the light source is detachably mounted on the light source mounting element.

4. The waveguide sheet detection apparatus according to claim 1, wherein The beam splitter is a half-reflective half-transmissive lens.

5. The waveguide sheet detection apparatus according to claim 1, wherein The bottom plate is a transparent plate. Alternatively, the bottom plate is provided with a hollow area, and the waveguide sheet is partially arranged in the hollow area, so that the other part of the light beam can be directed to the self-collimating element.

6. The waveguide sheet detection apparatus according to claim 1, wherein The self-collimating element is fixed to the bottom plate by screw connection.

7. The waveguide sheet detection apparatus according to claim 6, wherein The side of the bottom plate away from the light source is provided with four threaded connecting columns, the threaded connecting columns are provided with internal threads, the self-collimating element is provided with a through hole, and the waveguide sheet detection device further comprises a screw, the screw passes through the through hole and is connected with the connecting column, so that the self-collimating element is fixed to the bottom plate.

8. The waveguide sheet detection apparatus according to claim 1, wherein Further comprising a supporting leg arranged on the side of the bottom plate close to the self-collimating element, the supporting leg being used for supporting the bottom plate.

9. The waveguide sheet detection apparatus according to claim 1, wherein Further comprising a detector for receiving the first test light beam and the second test light beam to complete detection.

10. The waveguide sheet detection apparatus according to claim 1, wherein The self-collimating element is an array corner reflector.

Images