CN112859343A - Novel augmented reality near-to-eye display device and augmented reality display equipment - Google Patents
Novel augmented reality near-to-eye display device and augmented reality display equipment Download PDFInfo
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/149—Beam splitting or combining systems operating by reflection only using crossed beamsplitting surfaces, e.g. cross-dichroic cubes or X-cubes
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Abstract
The present disclosure relates to a novel augmented reality near-to-eye display device and augmented reality display apparatus, the augmented reality near-to-eye display device, include: the display source, the collimation system and the X-shaped polarization array optical waveguide lens; the display source is arranged on a main optical axis of the collimation system and used for loading and outputting images, wherein the display source comprises: the device comprises a red light Micro-LED Micro-display, a green light Micro-LED Micro-display, a blue light Micro-LED Micro-display and a light combining prism, wherein the light combining prism is used for combining the emergent light of the red light Micro-LED Micro-display, the green light Micro-LED Micro-display and the blue light Micro-LED Micro-display into one beam; the collimation system is positioned on the light emergent surface of the display source and is used for collimating and correcting the image output by the display source and then transmitting the image to the X-shaped polarization array optical waveguide lens; the X-type polarization array optical waveguide lens is arranged on an emergent light path of the collimation system and used for coupling in light out to human eyes. By this configuration, high-luminance color display of the near-eye display device can be realized.
Description
Technical Field
The present disclosure relates to augmented reality display technologies, and in particular, to a novel augmented reality near-to-eye display device and an augmented reality display apparatus.
Background
The augmented reality technology is a technology which projects a virtual image to human eyes and enables a user to view the surrounding environment, and due to the unique characteristic that the projected image can be superposed on the real world perceived by the user, the augmented reality technology is widely applied to the fields of virtual reality and augmented reality, such as military, industrial design and manufacture, medical treatment, entertainment and the like.
Currently, an image source of a Display device in the augmented reality technology mainly includes a liquid Crystal on silicon (lcos), an organic Light Emitting diode (oled), a liquid Crystal Display (lcd), and a Micro-LED Micro-array (Micro-LED). LCOS, OLED and LCD have low display brightness, which is not beneficial for outdoor use. Micro-LED is a new generation display technology, and compared with the existing OLED technology, the Micro-LED has the advantages of higher brightness, better luminous efficiency and lower power consumption. However, most of the existing Micro-LED displays are monochrome displays, and colorization is difficult, so that the user experience of the display device is poor.
In addition, most of optical schemes in the near-to-eye display device based on the augmented reality technology at present adopt a polarization array optical waveguide scheme, and due to process limitations such as a high-precision glass cold working process, accurate lamination of a laminated inclined surface prism, extremely complex film system design on the surface of the laminated inclined surface prism, accurate control on the thickness of dozens of layers of nano-scale films and the like, most of waveguide lenses can only couple out light aiming at S-polarized light waves (a polarization vector is vertical to the plane) or P-polarized light waves (a polarization vector is in the plane) independently, and the optical efficiency of the waveguide lenses is very low, so that the final eye-entering brightness is greatly reduced, and the eye-entering brightness requirement during operation on certain specific work occasions cannot be met.
Disclosure of Invention
In order to solve the problems existing in the related art, the present disclosure provides a novel augmented reality near-eye display device and augmented reality display equipment, wherein monochromatic red light Micro-LED Micro-display, green light Micro-LED Micro-display and blue light Micro-LED Micro-display are used as image sources, emergent light of the red light Micro-LED Micro-display, the green light Micro-LED Micro-display and the blue light Micro-LED Micro-display is combined into a beam by a light combining prism, and the emergent light and live-action light passing through the light combining prism are transmitted to human eyes by a collimating system and an X-type polarization array optical waveguide lens, so that the problem that both high brightness and colorization in the near-eye display device in the prior art can not be considered at the same time is solved, and high-brightness color display of the near-eye display device is realized.
According to a first aspect of the embodiments of the present disclosure, there is provided a novel augmented reality near-eye display device, including: the display source, the collimation system and the X-shaped polarization array optical waveguide lens;
the display source is disposed on a main optical axis of the collimating system, and configured to load and output an image, wherein the display source includes: the Micro-LED Micro-display comprises a red light Micro-LED Micro-display, a green light Micro-LED Micro-display, a blue light Micro-LED Micro-display and a light-combining prism, wherein the red light Micro-LED Micro-display and the blue light Micro-LED Micro-display are oppositely arranged and are respectively adhered to the upper surface and the lower surface of the light-combining prism, the green light Micro-LED Micro-display and the light-emitting surface of the light-combining prism are oppositely arranged and are adhered to the light-entering surface of the light-combining prism, and the light-combining prism is used for combining the emergent light of the red light Micro-LED Micro-display, the green light Micro-LED Micro-display and the blue light Micro-LED Micro-display into one beam;
the collimation system is positioned on the light-emitting surface of the display source and is used for collimating and correcting the image output by the display source and then transmitting the image to the X-shaped polarization array optical waveguide lens;
the X-shaped polarization array optical waveguide lens is arranged on an emergent light path of the collimation system and used for coupling in light out to human eyes.
In one embodiment, preferably, the light combining prism is a cube prism and includes four isosceles right-angle triangular prisms, a first coated surface and a second coated surface, the first coated surface is a short-wave pass dual-color filter and forms an angle of 45 degrees with an upper surface of the light combining prism, and the second coated surface is a long-wave pass dual-color filter and forms an angle of 45 degrees with a lower surface of the light combining prism.
In one embodiment, preferably, the first plating film has a reflectance of more than 95% with respect to red light and a transmittance of more than 95% with respect to blue and green light. The second coating has a reflectance greater than 95% for blue light and a transmittance greater than 95% for red and green light.
In one embodiment, preferably, the "X-type" polarization array optical waveguide lens includes: a triangular prism, a waveguide plate substrate, an X-shaped polarization beam splitting film array, an 1/4 wave plate and a high reflector are coupled;
the incoupling triangular prism is arranged in an incoupling area of the waveguide plate substrate and is used for enabling the incident light to be coupled into the waveguide plate substrate;
the waveguide substrate is used for transmitting the light coupled into the waveguide substrate to the X-type polarization light splitting film array in a total reflection mode;
the X-type polarization light splitting film array is arranged in the coupling-out area of the waveguide plate substrate and is used for coupling out light transmitted to the X-type polarization light splitting film array to human eyes;
1/4 wave plate and high reflector adhered to the bottom of the X-type polarized array optical waveguide lens from left to right along the light transmission direction for type conversion and reflection of polarized light wave.
In one embodiment, preferably, the "X-type" polarization splitting film array comprises eight polarization splitting film array substrates, wherein the eight polarization splitting film array substrates form four groups of substrates each arranged in an "X-type" manner.
In one embodiment, preferably, in the "X-type" polarization splitting film array, four polarization splitting film array substrates in a "/type" direction are arranged in parallel and at equal intervals, and the interval is a preset interval, an inclination angle between the polarization splitting film array substrate and a waveguide plate substrate is a preset angle, a thickness of the waveguide plate substrate is a preset thickness, the four polarization splitting film array substrates in the "/type" direction can couple out P-polarized light waves, and reflectivity of each polarization splitting film array substrate to the P-polarized light waves sequentially increases along a light transmission direction;
in the X-type polarization light splitting film array, four polarization light splitting film array substrates in the \ "type" direction are arranged in parallel at equal intervals, the interval is a preset interval, the inclination angle between the polarization light splitting film array substrates and the waveguide board substrate is a preset angle, the four polarization light splitting film array substrates in the \ "type" direction can couple out the P-polarized light wave, and the reflectivity of each polarization light splitting film array substrate to the P-polarized light wave along the light transmission direction is gradually reduced.
In one embodiment, preferably, the collimating system includes a first lens, a second lens, a third lens and a fourth lens, which are coaxially disposed in sequence from an object plane to an image plane, wherein the first lens is a plano-convex lens, the second lens is a biconcave lens, the third lens is a biconvex lens, and the fourth lens is a plano-convex lens.
In one embodiment, preferably, the first surface of the first lens is a plane, the second surface of the first lens is a convex surface and is a spherical surface, the first surface and the second surface of the second lens are both concave surfaces and are spherical surfaces, the first surface and the second surface of the third lens are both convex surfaces and are spherical surfaces, and the first surface of the fourth lens is a plane, and the second surface is a convex surface and is spherical surfaces.
In one embodiment, preferably, the radius of curvature of the concave surface of the second lens is the same size as the radius of curvature of the convex surface of the first surface of the third lens, opposite in sign, and cemented with each other such that the second lens and the third lens form an integral cemented lens, and the radius of curvature of the convex surface of the second surface of the fourth lens is larger than the radius of curvature of the convex surface of the second surface of the first lens.
According to a second aspect of the embodiments of the present disclosure, there is provided an augmented reality display apparatus including:
the augmented reality near-eye display device of any one of the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the embodiment of the invention, the problem that the high brightness and colorization of the near-eye display device in the prior art can not be considered at the same time is solved, and the high-brightness color display of the near-eye display device is realized. The use of the X-shaped polarized waveguide lens greatly improves the light efficiency of the waveguide lens and the final eye-entering brightness on the premise of not influencing the brightness uniformity of the final eye-entering light. The optical-mechanical collimating system adopts a full-lens type light path design, has small quantity of lenses and simple structure, can effectively reduce the volume and the weight, is suitable for being worn by a human body, and greatly reduces the manufacturing cost because the process requirement is low and the realization is easy.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram illustrating a novel augmented reality near-eye display device according to an exemplary embodiment.
Fig. 2 is a schematic structural diagram illustrating a novel augmented reality near-eye display device according to an exemplary embodiment.
Fig. 3 is a schematic structural diagram illustrating a light combining prism in a novel augmented reality near-eye display device according to an exemplary embodiment.
Fig. 4 is a schematic structural diagram illustrating a collimating system in a novel augmented reality near-eye display device according to an exemplary embodiment.
FIG. 5 is a diagram illustrating lens parameters in a collimation system, according to an exemplary embodiment.
FIG. 6 is a schematic diagram illustrating optical performance parameters of a collimation system in accordance with an exemplary embodiment.
Fig. 7 is a MTF graph of a collimation system in a novel augmented reality near-eye display device shown in accordance with an example embodiment.
Fig. 8 is a distortion plot of a collimation system in a novel augmented reality near-eye display device shown in accordance with an example embodiment.
Fig. 9 is a schematic diagram illustrating the principle of light wave transmission in the "X" type polarization array optical waveguide lens in a novel augmented reality near-eye display device according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic structural diagram illustrating a novel augmented reality near-eye display device according to an exemplary embodiment.
As shown in fig. 1, the novel augmented reality near-eye display device includes: a display source 11, a collimation system 12 and an X-type polarization array optical waveguide lens 13;
the display source 11 is disposed on a main optical axis of the collimating system, and is configured to load and output an image, where as shown in fig. 2, the display source 11 includes: the Micro-LED Micro-display device comprises a red light Micro-LED Micro-display 111, a green light Micro-LED Micro-display 112, a blue light Micro-LED Micro-display 113 and a light combining prism 114, wherein the red light Micro-LED Micro-display 111 and the blue light Micro-LED Micro-display 113 are oppositely arranged and are respectively adhered to the upper surface and the lower surface of the light combining prism 114, the light emitting surface of the green light Micro-LED Micro-display 112 and the light emitting surface of the light combining prism 114 are oppositely arranged and are adhered to the light incident surface of the light combining prism 114, and the light combining prism 114 is used for combining the emergent light of the red light Micro-LED Micro-display 111, the green light Micro-LED Micro-display 112 and the blue light Micro-LED Micro-display 113 into a beam.
As shown in fig. 3, in an embodiment, preferably, the light combining prism 114 is a square prism and includes four isosceles right triangle prisms, a first coated surface 31 and a second coated surface 32, where the first coated surface 31 is a short wavelength dual-color filter and forms an angle of 45 degrees with the upper surface of the light combining prism 114, and the second coated surface 32 is a long wavelength dual-color filter and forms an angle of 45 degrees with the lower surface of the light combining prism 114.
In one embodiment, the first coating side 31 preferably has a reflectivity of greater than 95% for red light and a transmissivity of greater than 95% for blue and green light. The second coating surface 32 has a reflectance greater than 95% for blue light and a transmittance greater than 95% for red and green light.
The collimation system 12 is located on the light emitting surface of the display source 11, and is configured to collimate and correct an image output by the display source 11 and then enter the "X-type" polarization array optical waveguide lens 13;
as shown in fig. 4, in one embodiment, the collimating system 12 preferably includes a first lens 121, a second lens 122, a third lens 123 and a fourth lens 124 coaxially disposed in sequence from an object plane to an image plane, wherein the first lens 121 is a plano-convex lens, the second lens 122 is a biconcave lens, the third lens 123 is a biconvex lens, and the fourth lens 124 is a plano-convex lens.
In one embodiment, preferably, the first surface of the first lens 121 is a plane, the second surface of the first lens 121 is a convex surface and is a spherical surface, the first surface and the second surface of the second lens 122 are both concave surfaces and are spherical surfaces, the first surface and the second surface of the third lens 123 are both convex surfaces and are spherical surfaces, and the first surface of the fourth lens 124 is a plane, and the second surface is a convex surface and is a spherical surface.
In one embodiment, preferably, the radius of curvature of the concave surface of the second lens 122 is the same as the radius of curvature of the convex surface of the first surface of the third lens 123, has opposite signs, and is cemented with each other, such that the second lens 122 and the third lens 123 form an integral cemented lens, and the radius of curvature of the convex surface of the second surface of the fourth lens 124 is greater than the radius of curvature of the convex surface of the second surface of the first lens 121. The first lens, the second lens, the third lens and the fourth lens are all made of glass. The parameters of each lens in the optical-mechanical collimating system are shown in fig. 5. The optical performance parameters of the opto-mechanical collimating system are shown in fig. 6.
As can be seen from FIG. 6, the MTF of the optical-mechanical collimating system is >0.5@64lp, as shown in FIG. 7, the imaging quality is good, and the distortion is less than 0.7%, as shown in FIG. 8. The axial aberration value and the color difference value are within an ideal range, and the imaging effect is excellent.
The X-type polarization array optical waveguide lens 13 is disposed on an emergent light path of the collimating system 12, and is configured to couple in light out to human eyes.
As shown in fig. 9, in one embodiment, preferably, the "X-type" polarization array optical waveguide lens 13 includes: a triangular prism 131, a waveguide plate substrate 132, an "X-type" polarization splitting film array 133, 1/4 wave plates 134, and a high reflection mirror 135;
the incoupling triangular prism 131 is arranged in an incoupling region of the waveguide board substrate 132 and is used for coupling the incident light into the waveguide board substrate 132;
the waveguide plate substrate 132 is configured to transmit the light coupled into the waveguide plate substrate 132 to the "X-type" polarization splitting film array 133 in a total reflection manner;
the X-type polarization splitting film array 133 is disposed in the light coupling-out region 132 of the waveguide substrate, and is configured to couple out the light transmitted to the X-type polarization splitting film array 133 to human eyes;
1/4 wave plate 134 and high reflector 135, which are adhered to the bottom of the "X-type" polarized array optical waveguide lens from left to right along the light transmission direction for type conversion and reflection of polarized light wave.
In one embodiment, the "X-type" polarization splitting film array 133 preferably comprises eight polarization splitting film array substrates, wherein the eight polarization splitting film array substrates form four groups of substrates each arranged in an "X-type" configuration.
In one embodiment, preferably, in the "X-type" polarization splitting film array, four polarization splitting film array substrates in a "/type" direction are arranged equidistantly and in parallel, and the pitch is a preset pitch, for example, 4.26mm, an inclination angle between the polarization splitting film array substrate and the waveguide plate substrate is a preset angle, for example, 25 degrees, the thickness of the waveguide plate substrate is a preset thickness, the four polarization splitting film array substrates in the "/type" direction can couple out P-polarized light waves, and the reflectivity of each polarization splitting film array substrate to the P-polarized light waves along the light transmission direction is sequentially increased, for example, the reflectivity of each polarization splitting film to the P-polarized light waves is sequentially 8%, 9%, 10%, and 12% from left to right along the light transmission direction; the thickness of the substrate of the polarization beam splitting film array waveguide lens is 2 mm.
In the X-type polarization splitting film array, four polarization splitting film array substrates in a "\ type" direction are arranged in parallel at equal intervals, and the interval is a preset interval, such as 4.26mm, an inclination angle between the polarization splitting film array substrate and the waveguide plate substrate is a preset angle, such as 25 degrees, the four polarization splitting film array substrates in the "\" type "direction can couple out P-polarized light waves, and the reflectivity of each polarization splitting film array substrate to the P-polarized light waves is gradually reduced along the light transmission direction, such as the reflectivity of each polarization splitting film to the P-polarized light waves is sequentially 8%, 9%, 10%, and 12% from right to left along the reflected light transmission direction.
According to the technical scheme of the invention, the light emitted by the collimation system 12 is incident into the waveguide plate substrate 132 through the incoupling triangular prism 131, and when the total reflection condition is met, the incoupling light can be transmitted forwards to the X-type polarization splitting film array 133 in a total reflection manner in the optical waveguide. Since the polarization splitting film array is designed to couple out light only for P-polarized light waves, the P-polarized light in the incident light is reflected out of the human eye to be imaged through the "/type" polarization splitting film array, and the S-polarized light waves continue to propagate forward to the 1/4 wave plate 134 and the high reflector 135 adhered to the bottom of the waveguide lens. After being reflected by the high reflection mirror 135, the part of the S polarized light wave passes through the 1/4 wave plate 134 again, and is converted into the P polarized light wave by the S polarized light wave, and the P polarized light wave is transmitted to the left, and finally reflected by the '\\ type' polarization beam splitting film array to form an image of human eyes. Due to the setting of the splitting ratio of the polarization splitting film to the P-polarized light waves, the light efficiency of the waveguide lens can be greatly improved on the premise that the brightness of the final incident light is uniform, the final incident brightness is improved, and the background light enters human eyes through the waveguide lens substrate.
According to the embodiment of the invention, the problem that the high brightness and colorization of the near-eye display device in the prior art can not be considered at the same time is solved, and the high-brightness color display of the near-eye display device is realized. The use of the X-shaped polarized waveguide lens greatly improves the light efficiency of the waveguide lens and the final eye-entering brightness on the premise of not influencing the brightness uniformity of the final eye-entering light. The optical-mechanical collimating system adopts a full-lens type light path design, has small quantity of lenses and simple structure, can effectively reduce the volume and the weight, is suitable for being worn by a human body, and greatly reduces the manufacturing cost because the process requirement is low and the realization is easy.
Based on the same concept, an embodiment of the present disclosure further provides an augmented reality display apparatus, including the augmented reality near-eye display device according to any one of the above technical solutions. The augmented reality display device may be an AR glasses or an AR helmet, or the like.
It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements 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 disclosure is limited only by the appended claims.
Claims (10)
1. A novel augmented reality near-to-eye display device, comprising: the display source, the collimation system and the X-shaped polarization array optical waveguide lens;
the display source is disposed on a main optical axis of the collimating system, and configured to load and output an image, wherein the display source includes: the Micro-LED Micro-display comprises a red light Micro-LED Micro-display, a green light Micro-LED Micro-display, a blue light Micro-LED Micro-display and a light-combining prism, wherein the red light Micro-LED Micro-display and the blue light Micro-LED Micro-display are oppositely arranged and are respectively adhered to the upper surface and the lower surface of the light-combining prism, the green light Micro-LED Micro-display and the light-emitting surface of the light-combining prism are oppositely arranged and are adhered to the light-entering surface of the light-combining prism, and the light-combining prism is used for combining the emergent light of the red light Micro-LED Micro-display, the green light Micro-LED Micro-display and the blue light Micro-LED Micro-display into one beam;
the collimation system is positioned on the light-emitting surface of the display source and is used for collimating and correcting the image output by the display source and then transmitting the image to the X-shaped polarization array optical waveguide lens;
the X-shaped polarization array optical waveguide lens is arranged on an emergent light path of the collimation system and used for coupling in light out to human eyes.
2. The augmented reality near-to-eye display device of claim 1, wherein the light combining prism is a cube prism comprising four isosceles right triangle prisms and a first coated surface and a second coated surface, the first coated surface being a short wavelength pass dichroic filter and having an angle of 45 degrees with an upper surface of the light combining prism, the second coated surface being a long wavelength pass dichroic filter and having an angle of 45 degrees with a lower surface of the light combining prism.
3. The augmented reality near-eye display device of claim 1, wherein the first coating has a reflectivity of greater than 95% for red light and a transmittance of greater than 95% for blue and green light, the second coating has a reflectivity of greater than 95% for blue light and a transmittance of greater than 95% for red and green light.
4. The augmented reality near-eye display device of claim 1, wherein the "X-type" polarizing array optical waveguide lens comprises: a triangular prism, a waveguide plate substrate, an X-shaped polarization beam splitting film array, an 1/4 wave plate and a high reflector are coupled;
the incoupling triangular prism is arranged in an incoupling area of the waveguide plate substrate and is used for enabling the incident light to be coupled into the waveguide plate substrate;
the waveguide substrate is used for transmitting the light coupled into the waveguide substrate to the X-type polarization light splitting film array in a total reflection mode;
the X-type polarization light splitting film array is arranged in the coupling-out area of the waveguide plate substrate and is used for coupling out light transmitted to the X-type polarization light splitting film array to human eyes;
1/4 wave plate and high reflector adhered to the bottom of the X-type polarized array optical waveguide lens from left to right along the light transmission direction for type conversion and reflection of polarized light wave.
5. The augmented reality near-eye display device of claim 1, wherein the "X-type" polarizing-splitting film array comprises eight polarizing-splitting film array substrates, wherein the eight polarizing-splitting film array substrates comprise four groups of substrates each arranged in an "X-type" configuration.
6. The augmented reality near-eye display device of claim 1,
in the X-type polarization light splitting film array, four polarization light splitting film array substrates in the/type direction are arranged in parallel at equal intervals, the interval is a preset interval, the inclination angle between the polarization light splitting film array substrate and the waveguide plate substrate is a preset angle, the thickness of the waveguide plate substrate is a preset thickness, the four polarization light splitting film array substrates in the/type direction can couple out P-polarized light waves, and the reflectivity of each polarization light splitting film array substrate to the P-polarized light waves along the light transmission direction is sequentially increased;
in the X-type polarization light splitting film array, four polarization light splitting film array substrates in the \ "type" direction are arranged in parallel at equal intervals, the interval is a preset interval, the inclination angle between the polarization light splitting film array substrates and the waveguide board substrate is a preset angle, the four polarization light splitting film array substrates in the \ "type" direction can couple out the P-polarized light wave, and the reflectivity of each polarization light splitting film array substrate to the P-polarized light wave along the light transmission direction is gradually reduced.
7. The augmented reality near-eye display device of claim 1, wherein the collimating system comprises a first lens, a second lens, a third lens and a fourth lens coaxially arranged in sequence from an object plane to an image plane, wherein the first lens is a plano-convex lens, the second lens is a biconcave lens, the third lens is a biconvex lens, and the fourth lens is a plano-convex lens.
8. The augmented reality near-eye display device of claim 7, wherein the first surface of the first lens is a plane, the second surface of the first lens is a convex surface and is a spherical surface, the first surface and the second surface of the second lens are both concave surfaces and are spherical surfaces, the first surface and the second surface of the third lens are both convex surfaces and are spherical surfaces, the first surface of the fourth lens is a plane, and the second surface is a convex surface and is spherical surfaces.
9. The augmented reality near-eye display device of claim 8, wherein the radius of curvature of the concave surface of the second lens is the same size as the radius of curvature of the convex surface of the first surface of the third lens, the signs are opposite, and the second lens and the third lens are cemented together to form a unitary cemented lens, and the radius of curvature of the convex surface of the second surface of the fourth lens is greater than the radius of curvature of the convex surface of the second surface of the first lens.
10. An augmented reality display device, comprising:
the augmented reality near-eye display device of any one of claims 1-9.
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