AR glasses assembly and AR glasses

Abstract

The invention discloses an AR glasses assembly and AR glasses. The AR glasses assembly comprises a monochromatic light source, a first waveguide sheet, a second waveguide sheet and a third waveguide sheet which are arranged in a laminated manner. The first waveguide sheet is provided with a first coupling-in grating, a first coupling-out grating and a first color conversion film. The second waveguide sheet is provided with a second coupling-in grating, a second coupling-out grating and a second color conversion film. The third waveguide sheet is provided with a third coupling-in grating and a third coupling-out grating. According to the monochromatic light source, color conversion is achieved through the first color conversion film and the second color conversion film, finally, light of three colors is emitted through the first coupling-out grating, the second coupling-out grating and the third coupling-out grating, and white state display is achieved through superposition of the light of the three colors. The monochromatic light source is used, the occupied structural size is small, the emitted white light is high in brightness, and the display effect is good.

Description

Technical Field

[0001] The present invention relates to the field of intelligent wearable devices, and in particular to an AR glasses assembly and AR glasses. Background Art

[0002] Augmented reality (AR) is becoming a new generation of interactive displays that can provide a vivid three-dimensional (3D) visual experience. AR glasses can display virtual images while maintaining perspective, facilitating the interaction between users, digital content, and the real world. The existing AR glasses are mainly single green in color, with a relatively complex structure and poor display effect. Summary of the invention

[0003] The purpose of the present application is to provide an AR glasses assembly and AR glasses that occupy a small volume and have good display effects.

[0004] The present application discloses an AR glasses component, including a monochromatic light source; a first waveguide plate, on which a first coupling-in grating, a first coupling-out grating and a first color transfer film corresponding to the position of the first coupling-in grating are arranged, the first coupling-in grating receives a light beam emitted by the monochromatic light source, and the first coupling-out grating emits a light beam with a first color toward a first direction; a second waveguide plate, located on a side of the first waveguide plate away from the monochromatic light source, on which a second coupling-in grating, a second coupling-out grating and a second color transfer film corresponding to the position of the second coupling-in grating are arranged, the second coupling-in grating receives a light beam passing through the first color transfer film, and the second coupling-out grating emits a light beam with a second color toward the first direction; a third waveguide plate, located on a side of the second waveguide plate away from the first waveguide plate, on which a third coupling-in grating and a third coupling-out grating are arranged, the third coupling-in grating receives a light beam passing through the second color transfer film, and the third coupling-out grating emits a light beam with a third color toward the first direction; the light beams of the first color, the second color and the third color are superimposed to form a white light beam.

[0005] Optionally, a first filter film is provided on one side of the second waveguide plate.

[0006] Optionally, a projection of the first filter film in the first direction does not overlap with projections of the second coupling-in grating, the second coupling-out grating, and the second color transfer film in the first direction.

[0007] Optionally, a second filter film is provided on one side of the third waveguide plate.

[0008] Optionally, a projection of the second filter film in the first direction does not overlap with projections of the third coupling-in grating and the third coupling-out grating in the first direction.

[0009] Optionally, a cover plate is provided between the monochromatic light source and the first waveguide plate, a third color transfer film is provided on the cover plate, and the light beam from the monochromatic light source passes through the third color transfer film to reach the first coupling grating.

[0010] Optionally, the monochromatic light source is an ultraviolet light source, and an anti-ultraviolet film is provided on the cover plate.

[0011] Optionally, a third filter film is provided on one side of the first waveguide plate.

[0012] Optionally, a collimating lens is arranged between the monochromatic light source and the first waveguide plate.

[0013] Optionally, projections of the first coupling grating, the second coupling grating and the third coupling grating in the first direction overlap.

[0014] Optionally, projections of the first coupling grating, the second coupling grating and the third coupling grating in the first direction fall within projections of the first color transfer film and the second color transfer film in the first direction.

[0015] Optionally, projections of the first outcoupling grating, the second outcoupling grating and the third outcoupling grating in the first direction overlap and fall within the anti-ultraviolet film.

[0016] Optionally, projections of the first coupling grating, the second coupling grating and the third coupling grating in the first direction do not overlap with a projection of the UV protection film in the first direction.

[0017] Optionally, the first coupling-in grating and the first coupling-out grating are relief gratings; and / or

[0018] The second coupling-in grating and the second coupling-out grating are relief gratings; and / or

[0019] The third coupling-in grating and the third coupling-out grating are relief gratings.

[0020] The present application also discloses a pair of AR glasses, comprising the above-mentioned AR glasses components.

[0021] Compared with the related art, the monochromatic light source of the present application realizes color conversion through the first color conversion film and the second color conversion film, and finally emits three colors of light through the first coupling grating, the second coupling grating and the third coupling grating, and the three colors of light are superimposed to realize white state display. The present application uses a monochromatic light source, the structure occupies a small volume, and the white light emitted is high in brightness and has a good display effect.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of an AR glasses assembly of the present application.

[0025] Figure 2 This is a schematic structural diagram of another embodiment of the AR glasses assembly of the present application.

[0026] Figure 3 This is a schematic structural diagram of another embodiment of the AR glasses assembly of the present application.

[0027] Figure 4 This is a schematic structural diagram of another embodiment of the AR glasses assembly of the present application.

[0028] Figure 5 Schematic diagram of the manufacturing process of a waveguide in an AR glasses assembly of the present application.

[0029] Figure 6 Schematic diagram of the manufacturing process of another embodiment of the waveguide in the AR glasses assembly of the present application.

[0030] Figure 7 Schematic diagram of the manufacturing process of another embodiment of the waveguide in the AR glasses assembly of the present application.

[0031] Explanation of the reference numerals: monochromatic light source, 10; first waveguide plate, 20; first coupling-in grating, 21; first coupling-out grating, 22; first color transfer film, 23; third filter film, 24; second waveguide plate, 30; second coupling-in grating, 31; second coupling-out grating, 32; second color transfer film, 33; first filter film, 34; third waveguide plate, 40; third coupling-in grating, 41; third coupling-out grating, 42; second filter film, 43; collimating lens, 50; cover plate, 60; third color transfer film, 61; UV protection film, 62; waveguide substrate, 100; coupling-in grating, 110; coupling-out grating, 120; color transfer layer, 130; encapsulation layer, 140; protective layer, 150; filter layer, 160. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0033] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0034] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms of "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] In the related technology, the mainstream of AR glasses is single green, with thick structure, low brightness and poor display effect, which does not conform to the reading habits of the public.

[0036] In order to solve the above technical problems, the present application provides an AR glasses assembly, which includes:

[0037] A monochromatic light source 10;

[0038] A first waveguide plate 20, on which a first coupling-in grating 21, a first coupling-out grating 22 and a first color transfer film 23 corresponding to the position of the first coupling-in grating 21 are disposed, the first coupling-in grating 21 receives a light beam emitted by the monochromatic light source 10, and the first coupling-out grating 22 emits a light beam having a first color toward a first direction;

[0039] The second waveguide plate 30 is located at a side of the first waveguide plate 20 away from the monochromatic light source 10. The second waveguide plate 30 is provided with a second coupling grating 31, a second coupling grating 32 and a second color transfer film 33 corresponding to the position of the second coupling grating 31. The second coupling grating 31 receives the light beam passing through the first color transfer film 23, and the second coupling grating 32 emits a light beam having a second color toward the first direction.

[0040] The third waveguide plate 40 is located at a side of the second waveguide plate 30 away from the first waveguide plate 20. The third waveguide plate 40 is provided with a third coupling grating 41 and a third coupling grating 42. The third coupling grating 41 receives the light beam passing through the second color transfer film 33, and the third coupling grating 42 emits a light beam having a third color toward the first direction.

[0041] The light beams of the first color, the second color, and the third color are superimposed to form a white light beam.

[0042] In order to solve the above technical problems, the present application further provides an AR glasses, which includes the above AR glasses components.

[0043] The monochromatic light source of the present application realizes color conversion through the first color conversion film 23 and the second color conversion film 33, and finally emits three colors of light through the first coupling grating 22, the second coupling grating 32 and the third coupling grating 42. The three colors of light are superimposed to realize white state display. The present application uses a monochromatic light source, the structure occupies a small volume, and the emitted white light has high brightness and good display effect.

[0044] The following will describe in detail various embodiments of the present application that are consistent with the above-mentioned creative concepts.

[0045] like Figure 1 As shown, an embodiment of the present application discloses an AR glasses component. The first coupling-in grating 21 and the first coupling-out grating 22 are arranged on the side of the first waveguide plate 20 close to the monochromatic light source 10, and the first color transfer film 23 is arranged on the side of the first waveguide plate 20 away from the monochromatic light source 10. The second coupling-in grating 31 and the second coupling-out grating 32 are arranged on the side of the second waveguide plate 30 close to the first waveguide plate 20, and the second color transfer film 33 is arranged on the side of the second waveguide plate 30 away from the first waveguide plate 20. The third coupling-in grating 41 and the third coupling-out grating 42 are arranged on the side of the third waveguide plate 40 close to the second waveguide plate 30, and the second filter film 43 is arranged on the side of the third waveguide plate 40 away from the second waveguide plate 30.

[0046] The light of the first color emitted by the monochromatic light source 10 enters the first waveguide plate 20 through the first coupling grating 21, part of the light in the first waveguide plate 20 is emitted toward the first direction through the first coupling grating 22, and part of the light is emitted toward the second waveguide plate 30 through the first color transfer film 23, and the first color transfer film 23 converts part of the light of the first color into light of the second color. The light emitted from the first color transfer film 23 enters the second waveguide plate 30 through the second coupling grating 31, part of the light in the second waveguide plate 30 is emitted toward the first direction through the second coupling grating 32, and part of the light is emitted toward the third waveguide plate 40 through the second color transfer film 33, and the second color transfer film 33 converts part of the light of the first color and part of the light of the second color into light of the third color. The light emitted from the second color transfer film 33 enters the third waveguide plate 40 through the third coupling grating 41, and part of the light of the third waveguide plate 40 is emitted toward the first direction through the third coupling grating 42. The first color light, the second color light, and the third color light are superimposed to realize black and white display. Optionally, a collimating lens 50 is disposed between the monochromatic light source 10 and the first waveguide plate 20 , and the collimating lens 50 converts the light emitted by the monochromatic light source 10 into a parallel light beam, and the parallel light beam enters the first waveguide plate 20 through the first coupling grating 21 .

[0047] Optionally, the first coupling-in grating 21 and the first coupling-out grating 22 are respectively arranged near two opposite ends of the first waveguide plate 20. The second coupling-in grating 31 and the second coupling-out grating 32 are respectively arranged near two opposite ends of the second waveguide plate 30. The third coupling-in grating 41 and the third coupling-out grating 42 are respectively arranged near two opposite ends of the third waveguide plate 40. The projections of the first coupling-in grating 21, the second coupling-in grating 31 and the third coupling-out grating 42 in the first direction overlap. And the projections of the centers of the first coupling-in grating 21, the second coupling-in grating 31 and the third coupling-in grating 41 in the first direction overlap with the centers of the monochromatic light source 10 and the collimating lens 50. The projections of the first coupling-in grating 21, the second coupling-in grating 31 and the third coupling-in grating 41 in the first direction fall within the projections of the first color transfer film 23 and the second color transfer film 33 in the first direction. The positions of the first coupling-in grating 21, the second coupling-in grating 31 and the third coupling-in grating 41 and the first coupling-out grating 22, the second coupling-out grating 32 and the third coupling-out grating 42 can be changed according to actual needs, as long as part of the light coupled into the coupling-in grating can be emitted toward the first direction through the coupling-out grating. The arrangement of the first coupling-in grating 21, the second coupling-in grating 31, the third coupling-in grating 41, the first color transfer film 23 and the second color transfer film 33 can also be changed according to actual needs, as long as the light beam can propagate along the path from the first coupling-in grating 21 to the first color transfer film 23 to the second coupling-in grating 31 to the second color transfer film 33 to the third coupling-in grating 41.

[0048] Please also see Figure 2In one embodiment, the monochromatic light source 10 is a blue light source. The first color transfer film 23 is a green color transfer film, which transmits part of the blue light and converts part of the blue light into green light. The second color transfer film 33 is a red color transfer film, which transmits part of the blue light and the green light and converts part of the blue light and the green light into red light. The first outcoupling grating 22 couples out the blue light in the first direction, the second outcoupling grating 32 couples out the green light in the first direction, and the third outcoupling grating 42 couples out the red light in the first direction. The blue light, the green light and the red light are superimposed to realize the black and white display.

[0049] Optionally, the first color transfer film 23 can be a red color transfer film, which transmits part of the blue light and converts part of the blue light into red light. The second color transfer film 33 is a green color transfer film, which transmits part of the blue light and the red light and converts part of the blue light and the red light into green light. The first outcoupling grating 22 couples out the blue light in the first direction, the second outcoupling grating 32 couples out the red light in the first direction, and the third outcoupling grating 42 couples out the green light in the first direction. The blue light, the red light and the green light are superimposed to realize the black and white display.

[0050] Optionally, a first filter film 34 is provided on one side of the second waveguide plate 30. The first filter film 34 can be provided on the side of the second waveguide plate 30 close to the first waveguide plate 20, or on the side of the second waveguide plate 30 close to the third waveguide plate 40. The projection of the first filter film 34 in the first direction does not overlap with the projection of the second coupling grating 31, the second coupling grating 32 and the second color transfer film 33 in the first direction. When the first color transfer film 23 is a green color transfer film, the first filter film 34 achieves a filtering effect by absorbing light beams other than the green light beam. When the first color transfer film 23 is a red color transfer film, the first filter film 34 achieves a filtering effect by absorbing light beams other than the red light beam.

[0051] Optionally, a second filter film 43 is provided on one side of the third waveguide plate 40. The second filter film 43 can be provided on the side of the third waveguide plate 40 close to the second waveguide plate 30, or on the side of the third waveguide plate 40 far from the second waveguide plate 30. The projection of the second filter film 43 in the first direction does not overlap with the projection of the third coupling-in grating 41 and the third coupling-out grating 42 in the first direction. When the second color transfer film 33 is a red color transfer film, the second filter film 43 achieves a filtering effect by absorbing light beams other than the red light beam. When the second color transfer film 33 is a green color transfer film, the filtering effect is achieved by absorbing light beams other than the green light beam.

[0052] Please also see Figure 3In one embodiment, a cover plate 60 is provided between the monochromatic light source 10 and the first waveguide plate 20. A third color transfer film 61 is provided on one side of the cover plate 60, and the light beam from the monochromatic light source 10 passes through the third color transfer film 61 to reach the first coupling grating 21. Optionally, the projections of the first coupling grating 21, the second coupling grating 31, and the third coupling grating 41 in the first direction fall within the projection of the third color transfer film 61 in the first direction. The monochromatic light source 10 can be a blue light source or an ultraviolet light source.

[0053] When the monochromatic light source 10 is an ultraviolet light source, the first color transfer film 23 is one of a blue color transfer film, a green color transfer film or a red color transfer film. The second color transfer film 33 is one of the remaining two of a blue color transfer film, a green color transfer film or a red color transfer film. The third color transfer film 61 is the remaining one of the blue color transfer film, the green color transfer film or the red color transfer film.

[0054] When the monochromatic light source 10 is a blue light source, the third color transfer film 61 is a green color transfer film or a red color transfer film. The first color transfer film 23 is a blue color transfer film, a green color transfer film, or a red color transfer film that is different from the third color transfer film 61. The second color transfer film 33 is a blue color transfer film, a green color transfer film, or a red color transfer film that is different from the first color transfer film 23 and the third color transfer film 61.

[0055] Please also see Figure 4 Optionally, a third filter film 24 is provided on one side of the first waveguide plate 20. The third filter film 24 can be provided on the side of the first waveguide plate 20 close to the monochromatic light source 10, or can be provided on the side of the first waveguide plate 20 close to the second waveguide plate 30. The projection of the third filter film 24 in the first direction does not overlap with the projection of the first coupling grating 21, the first coupling grating 22 and the first color transfer film 23 in the first direction. When the monochromatic light source 10 is an ultraviolet light source, when the third color transfer film 61 is a blue color transfer film, the third filter film 24 achieves a filtering effect by absorbing light beams other than the blue light beam. When the third color transfer film 61 is a green color transfer film, the third filter film 24 achieves a filtering effect by absorbing light beams other than the green light beam. When the third color transfer film 61 is a red color transfer film, the third filter film 24 achieves a filtering effect by absorbing light beams other than the red light beam. When the monochromatic light source 10 is a blue light source, when the third color transfer film 61 is a green color transfer film, the third filter film 24 achieves a filtering effect by absorbing light beams other than the green light beam. When the third color transfer film 61 is a red color transfer film, the third filter film 24 achieves a filtering effect by absorbing light beams other than the red light beam.

[0056] Optionally, a first filter film 34 is provided on one side of the second waveguide plate 30. The first filter film 34 can be provided on the side of the second waveguide plate 30 close to the first waveguide plate 20, or on the side of the second waveguide plate 30 close to the third waveguide plate 40. The projection of the first filter film 34 in the first direction does not overlap with the projection of the second coupling grating 31, the second coupling grating 32 and the second color transfer film 33 in the first direction. When the first color transfer film 23 is a green color transfer film, the first filter film 34 achieves a filtering effect by absorbing light beams other than the green light beam. When the first color transfer film 23 is a red color transfer film, the first filter film 34 achieves a filtering effect by absorbing light beams other than the red light beam. When the first color transfer film 23 is a blue color transfer film, the first filter film 34 achieves a filtering effect by absorbing light beams other than the blue light beam.

[0057] Optionally, a second filter film 43 is provided on one side of the third waveguide plate 40. The second filter film 43 can be provided on the side of the third waveguide plate 40 close to the second waveguide plate 30, or on the side of the third waveguide plate 40 away from the second waveguide plate 30. The projection of the second filter film 43 in the first direction does not overlap with the projection of the third coupling-in grating 41 and the third coupling-out grating 42 in the first direction. When the second color transfer film 33 is a red color transfer film, the second filter film 43 achieves a filtering effect by absorbing light beams other than the red light beam. When the second color transfer film 33 is a green color transfer film, the filtering effect is achieved by absorbing light beams other than the green light beam. When the second color transfer film 33 is a blue color transfer film, the filtering effect is achieved by absorbing light beams other than the blue light beam.

[0058] Optionally, when the monochromatic light source 10 is an ultraviolet light source, an anti-ultraviolet film 62 is provided on one side of the cover plate 60. The anti-ultraviolet film 62 can be provided on the side of the cover plate 60 close to the monochromatic light source 10, or on the side of the cover plate 60 close to the first waveguide plate 20. The projections of the first out-coupling grating 22, the second out-coupling grating 32, and the third out-coupling grating 42 in the first direction overlap and fall within the projection of the anti-ultraviolet film 62 in the first direction. The projections of the first in-coupling grating 21, the second in-coupling grating 31, and the third in-coupling grating 41 in the first direction have no overlapping area with the projection of the anti-ultraviolet film 62 in the first direction. The projections of the first color transfer film 23, the second color transfer film 33, and the third color transfer film 61 in the first direction have no overlapping area with the projection of the anti-ultraviolet film 62 in the first direction.

[0059] Optionally, the first coupling-in grating 21, the first coupling-out grating 22, the second coupling-in grating 31, the second coupling-out grating 32, the third coupling-in grating 41 and the third coupling-out grating 42 may be relief gratings or holographic gratings. The preparation process of the relief grating is simple, but the wavelength bandwidth is wide, that is, the grating used for coupling out the green light beam may also respond to the blue light beam, and the grating used for coupling out the red light beam may also respond to the green light beam. The wavelength bandwidth of the holographic grating is narrow, that is, the grating used for coupling out the green light beam will only respond to the green light beam, the grating used for coupling out the red light beam will only respond to the red light beam, and the grating used for coupling out the blue light beam will only respond to the blue light beam. Optionally, when a filter film is provided on the waveguide plate, the coupling-in grating and the coupling-out grating adopt relief gratings. When the filter film is not provided on the waveguide plate, the coupling-in grating and the coupling-out grating adopt holographic gratings.

[0060] like Figure 5 As shown. The present application also discloses a method for manufacturing a waveguide sheet. In one embodiment, the method for manufacturing a waveguide sheet includes firstly providing a waveguide substrate 100, on which a coupling-in region and a coupling-out region are provided, and the coupling-in region and the coupling-out region are respectively located near two opposite ends of the waveguide substrate 100. The waveguide substrate 100 is a transparent substrate. Then, a color transfer layer 130 is spin-coated on the back of the waveguide substrate 100 and patterned at a position corresponding to the coupling-in region. Then, a packaging layer 140 is deposited on the back of the waveguide substrate 100 to protect the color transfer layer 130. Then, the waveguide substrate 100 is turned over to the front, and a grating is printed on the front of the waveguide substrate 100, and the grating includes a coupling-in grating 110 and a coupling-out grating 120. The coupling-in grating 110 is printed on the coupling-in region, and the coupling-out grating 120 is printed on the coupling-out region. The coupling-in region and the coupling-out region are respectively located near two opposite ends of the waveguide substrate 100. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the blue light beam, a blue waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the red light beam, a red waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the green light beam, a green waveguide plate is obtained.

[0061] like Figure 6As shown, in another embodiment, the method for making a waveguide sheet includes first setting a waveguide substrate 100, and the waveguide substrate 100 is a transparent substrate. Then, a grating is printed on the front side of the waveguide substrate 100, and the grating includes an in-coupling grating 110 and an out-coupling grating 120. The in-coupling grating 110 is printed on the in-coupling region, and the out-coupling grating 120 is printed on the out-coupling region. The in-coupling region and the out-coupling region are respectively located near the two opposite ends of the waveguide substrate 100. Then, a protective layer 150 is spin-coated on the front side of the waveguide substrate 100, and the protective layer 150 completely covers the in-coupling grating 110 and the out-coupling grating 120. Then, the waveguide substrate 100 is turned over to the back side, and a color transfer layer 130 is spin-coated on the back side of the waveguide substrate 100 and patterned at a position corresponding to the in-coupling region. Then, a packaging layer 140 is deposited on the back side of the waveguide substrate 100 to protect the color transfer layer 130. Finally, the waveguide substrate 100 is turned over to the front side, and the protective layer 150 is removed. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the blue light beam, a blue waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the red light beam, a red waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the green light beam, a green waveguide plate is obtained.

[0062] like Figure 7 As shown, in another embodiment, the method for manufacturing a waveguide sheet includes firstly providing a waveguide substrate 100, on which an incoupling region and an outcoupling region are provided, and the incoupling region and the outcoupling region are respectively located near two opposite ends of the waveguide substrate 100. The waveguide substrate 100 is a transparent substrate. Then, a color transfer layer 130 is spin-coated on the back of the waveguide substrate 100 and patterned at a position corresponding to the incoupling region. Then, a filter layer 160 is spin-coated on the back of the waveguide substrate 100 and patterned at a position corresponding to the incoupling region, and the projection of the filter layer 160 in the first direction has no overlapping area with the projection of the color transfer layer 130, the incoupling region and the outcoupling region in the first direction. Then, a packaging layer 140 is deposited on the back of the waveguide substrate 100 to protect the color transfer layer 130 and the filter layer 160. Then, the waveguide substrate 100 is turned over to the front, and a grating is imprinted on the front of the waveguide substrate 100, and the grating includes an incoupling grating 110 and an outcoupling grating 120. The coupling-in grating 110 is embossed on the coupling-in region, and the coupling-out grating 120 is embossed on the coupling-out region. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the blue light beam, a blue waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the red light beam, a red waveguide plate is obtained. When the color conversion layer 130, the coupling-in grating 110 and the coupling-out grating 120 correspond to the wavelength band of the green light beam, a green waveguide plate is obtained.

[0063] The present application also discloses a pair of AR glasses, comprising the above-mentioned AR glasses components.

[0064] Those skilled in the art will readily appreciate other embodiments of the specification after considering the specification and practicing the invention claimed herein. The specification is intended to cover any variations, uses or adaptations of the specification that follow the general principles of the specification and include common knowledge or customary techniques in the art that are not claimed in the specification. The specification and examples are to be considered exemplary only, and the true scope and spirit of the specification are indicated by the following claims.

[0065] It should be understood that the present description is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

[0066] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. An AR glasses assembly, characterized in that: include: Monochromatic light source; a first waveguide plate, on which a first coupling-in grating, a first coupling-out grating and a first color transfer film corresponding to the position of the first coupling-in grating are arranged, the first coupling-in grating receives the light beam emitted by the monochromatic light source, and the first coupling-out grating emits a light beam having a first color toward a first direction; a second waveguide plate, located at a side of the first waveguide plate away from the monochromatic light source, the second waveguide plate being provided with a second coupling grating, a second coupling grating and a second color transfer film corresponding to the position of the second coupling grating, the second coupling grating receiving the light beam passing through the first color transfer film, and the second coupling grating emitting a light beam having a second color toward the first direction; a third waveguide plate, located on a side of the second waveguide plate away from the first waveguide plate, the third waveguide plate being provided with a third coupling-in grating and a third coupling-out grating, the third coupling-in grating receiving the light beam passing through the second color transfer film, and the third coupling-out grating emitting a light beam having a third color toward the first direction; The light beams of the first color, the second color and the third color are superimposed to form a white light beam.

2. The AR glasses assembly according to claim 1, characterized in that: A first filter film is disposed on one side of the second waveguide plate.

3. The AR glasses assembly according to claim 2, characterized in that: The projection of the first filter film in the first direction does not overlap with the projections of the second coupling-in grating, the second coupling-out grating and the second color transfer film in the first direction.

4. The AR glasses assembly according to claim 1, characterized in that: A second filter film is arranged on one side of the third waveguide plate.

5. The AR glasses assembly according to claim 4, characterized in that: The projection of the second filter film in the first direction does not overlap with the projections of the third coupling-in grating and the third coupling-out grating in the first direction.

6. The AR glasses assembly according to claim 1, characterized in that: A cover plate is arranged between the monochromatic light source and the first waveguide plate, and a third color transfer film is arranged on the cover plate. The light beam from the monochromatic light source passes through the third color transfer film and reaches the first coupling grating.

7. The AR glasses assembly according to claim 6, characterized in that: The monochromatic light source is an ultraviolet light source, and an anti-ultraviolet film is provided on the cover plate.

8. The AR glasses assembly according to claim 7, characterized in that: A third filter film is arranged on one side of the first waveguide plate.

9. The AR glasses assembly according to any one of claims 1 to 7, characterized in that: A collimating lens is arranged between the monochromatic light source and the first waveguide plate.

10. The AR glasses assembly according to claim 1, characterized in that: Projections of the first coupling grating, the second coupling grating, and the third coupling grating in the first direction overlap.

11. The AR glasses assembly according to claim 1, characterized in that: Projections of the first coupling grating, the second coupling grating, and the third coupling grating in the first direction fall within projections of the first color transfer film and the second color transfer film in the first direction.

12. The AR glasses assembly according to claim 7, characterized in that: The projections of the first outcoupling grating, the second outcoupling grating and the third outcoupling grating in the first direction overlap and fall within the anti-ultraviolet film.

13. The AR glasses assembly according to claim 7, characterized in that: The projections of the first coupling grating, the second coupling grating and the third coupling grating in the first direction do not overlap with the projection of the UV protection film in the first direction.

14. The AR glasses assembly according to any one of claims 2, 4 or 8, characterized in that: The first coupling-in grating and the first coupling-out grating are relief gratings; and / or The second coupling-in grating and the second coupling-out grating are relief gratings; and / or The third coupling-in grating and the third coupling-out grating are relief gratings.

15. An AR glasses, characterized in that: Comprising an AR glasses assembly as described in any one of claims 1-14.

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