CN113687514A - Colored AR glasses - Google Patents
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- CN113687514A CN113687514A CN202111006438.7A CN202111006438A CN113687514A CN 113687514 A CN113687514 A CN 113687514A CN 202111006438 A CN202111006438 A CN 202111006438A CN 113687514 A CN113687514 A CN 113687514A
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- 239000011521 glass Substances 0.000 title claims abstract description 30
- 210000001747 pupil Anatomy 0.000 claims abstract description 370
- 239000003086 colorant Substances 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- 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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
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- G—PHYSICS
- G02—OPTICS
- 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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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Abstract
The invention discloses color AR glasses, which comprise a waveguide template, wherein the waveguide template is provided with a first entrance pupil area, a second entrance pupil area and a third entrance pupil area, which are uniformly distributed on the central axis of the waveguide template and positioned above the nose bridge of the waveguide template; the first pupil expanding area and the second pupil expanding area are symmetrically arranged at the left side and the right side of the entrance pupil area; the first exit pupil area and the second exit pupil area are respectively positioned below the first expanding pupil area and the second expanding pupil area; the first projection light machine, the second projection light machine and the third projection light machine are respectively configured with the first entrance pupil area, the second entrance pupil area and the third entrance pupil area, and the first projection light machine, the second projection light machine and the third projection light machine respectively project colored light in three colors of RGB. According to the invention, the projection light machine of the micro LED with three wavelengths is arranged, so that the color image is successfully displayed on the AR glasses, the emergent light brightness is ensured, and the color is richer and fuller.
Description
Technical Field
The invention relates to the technical field of AR display, in particular to color AR glasses.
Background
With the progress of imaging technology, people have higher and higher requirements on immersive experience, and in recent years, the development of VR/AR technology gradually meets the pursuit of people on visual experience. The head-mounted equipment can liberate both hands of people, reduce the dependence on the screen, and build better visual effect simultaneously. For head-mounted devices, near-eye display is the key to its technology, and imaging quality and thinness are major considerations. The near-to-eye display system generally consists of an image far-near light transmission system, and image pictures sent by an image source are transmitted to human eyes through an optical transmission system. Here, the area is different from the blocking of the VR to the external environment, and the AR needs to have a certain transmittance, so that the wearer can see the external environment while seeing the image.
For optical transmission systems, there are many schemes in the industry, such as free space optics, free form optics, and display light guides. The optical waveguide technology is obviously superior to other optical schemes due to the characteristics of a large eye box and the light and thin characteristics of the large eye box, and becomes a mainstream path of each large company.
At present, the projection mode of the AR glasses projection optical machine is based on the technologies of LCOS, DLP, Micro LED and the like, the two are light source light emitting display methods, and the display color can be controlled by the light source; and the Micro LED is a self-luminous screen, has higher brightness, does not need a light source for illumination, and can greatly reduce the volume of the projection light machine. However, the current technology is limited to Micro LEDs, and only one color light can be displayed.
Disclosure of Invention
The embodiment of the invention provides color AR glasses, and aims to achieve the effect of displaying color images on the AR glasses.
The embodiment of the invention provides color AR glasses, which comprise a waveguide template, wherein the waveguide template is provided with an entrance pupil area, an expansion pupil area, an exit pupil area and a projection optical machine for carrying out light beam coupling on the entrance pupil area, and the projection optical machine adopts a Micro LED panel;
the entrance pupil region comprises a first entrance pupil region, a second entrance pupil region and a third entrance pupil region, and the first entrance pupil region, the second entrance pupil region and the third entrance pupil region are uniformly distributed on the central axis of the waveguide plate template and are positioned above the nose bridge of the waveguide plate template; the pupil expanding region comprises a first pupil expanding region and a second pupil expanding region, and the first pupil expanding region and the second pupil expanding region are symmetrically arranged at the left side and the right side of the entrance pupil region; the exit pupil region comprises a first exit pupil region and a second exit pupil region, and the first exit pupil region and the second exit pupil region are respectively positioned below the first expanded pupil region and the second expanded pupil region;
the projection ray apparatus includes first projection ray apparatus, second projection ray apparatus and third projection ray apparatus, first projection ray apparatus, second projection ray apparatus and third projection ray apparatus with first entrance pupil region, second entrance pupil region and third entrance pupil region are disposed mutually respectively, just first projection ray apparatus, second projection ray apparatus and third projection ray apparatus project a chromatic light in three kinds of colours RGB respectively.
Furthermore, the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are uniformly arranged side by side, and the geometric centers of the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are located on the same horizontal line.
Further, first projection ray apparatus, second projection ray apparatus and third projection ray apparatus evenly set up side by side in the top of entering the pupil region, and respectively with first entering the pupil region, second enter the pupil region and the regional one-to-one of third entering the pupil, the geometric center of first projection ray apparatus, second projection ray apparatus and third projection ray apparatus is located same water flat line, just first projection ray apparatus, second projection ray apparatus and third projection ray apparatus all include Micro LED panel, projecting lens that set gradually from interior to exterior and are used for getting into the corner prism in pupil region with the light beam coupling.
Furthermore, the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are uniformly arranged in a triangular shape.
Further, first projection ray apparatus, second projection ray apparatus and third projection ray apparatus are the triangle-shaped just right first entrance pupil region, second entrance pupil region and third entrance pupil region set up, just first projection ray apparatus, second projection ray apparatus and third projection ray apparatus all include Micro LED panel and projecting lens that sets gradually from inside to outside.
Furthermore, the entrance pupil area, the expanding pupil area and the exit pupil area are all arranged by diffraction gratings.
Further, the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are all circular areas, and the diameter of each circular area is 2.5-7 mm;
the grating directions of the diffraction gratings of the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are all parallel to a horizontal line, and the grating periods are all 330-450 mm.
Furthermore, the maximum width of the first pupil expanding region or the second pupil expanding region is 5-10 times of the diameter of the entrance pupil region, the maximum height is 2-5 times of the diameter of the entrance pupil region, the height of the first pupil expanding region or the second pupil expanding region on one side close to the entrance pupil region is the lowest, and the height of the first pupil expanding region or the second pupil expanding region on one side far away from the entrance pupil region is the highest;
the grating periods of the diffraction gratings in the first pupil expanding region and the second pupil expanding region are the same, wherein the included angle between the grating direction of the first pupil expanding region and the horizontal line is 40-50 degrees and faces the first exit pupil region; an included angle between the grating direction of the second pupil expansion region and a horizontal line is 130-140 degrees, and the included angle faces the second exit pupil region;
the first pupil expanding area and the second pupil expanding area are mirror-symmetrical in size, structure, position and grating characteristics.
Further, the length of the first exit pupil region or the second exit pupil region is 80% -90% of the width of the first exit pupil region or the second exit pupil region, the length of the first exit pupil region or the second exit pupil region is 3-6 times of the diameter of the entrance pupil region, and the ratio of the length to the width of the first exit pupil region or the second exit pupil region is 16:9 or 4: 3;
the grating periods of the diffraction gratings in the first exit pupil region and the second exit pupil region are the same, the grating direction is vertical to a horizontal line, and the grating period is 330-450 mm;
the first exit pupil area and the second exit pupil area are mirror-symmetrical in size, structure, position and grating characteristics.
Further, the distance between the geometric centers of the first exit pupil area and the second exit pupil area is 60 mm-70 mm.
The embodiment of the invention provides color AR glasses, which comprise a waveguide template, wherein the waveguide template is provided with an entrance pupil area, an expansion pupil area, an exit pupil area and a projection optical machine for carrying out light beam coupling on the entrance pupil area, and the projection optical machine adopts a Micro LED panel; the entrance pupil region comprises a first entrance pupil region, a second entrance pupil region and a third entrance pupil region, and the first entrance pupil region, the second entrance pupil region and the third entrance pupil region are uniformly distributed on the central axis of the waveguide plate template and are positioned above the nose bridge of the waveguide plate template; the pupil expanding region comprises a first pupil expanding region and a second pupil expanding region, and the first pupil expanding region and the second pupil expanding region are symmetrically arranged at the left side and the right side of the entrance pupil region; the exit pupil region comprises a first exit pupil region and a second exit pupil region, and the first exit pupil region and the second exit pupil region are respectively positioned below the first expanded pupil region and the second expanded pupil region; the projection ray apparatus includes first projection ray apparatus, second projection ray apparatus and third projection ray apparatus, first projection ray apparatus, second projection ray apparatus and third projection ray apparatus with go into pupil region, second and third respectively and go into pupil region and dispose mutually, just first projection ray apparatus, second projection ray apparatus and third projection ray apparatus project a chromatic light in three kinds of colours RGB respectively. According to the embodiment of the invention, the projection light machine of the Micro LED with three wavelengths is arranged, so that the color image is successfully displayed on the AR glasses, the emergent light brightness is ensured, and the color is richer and fuller.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first structural schematic diagram of a pair of color AR glasses according to an embodiment of the present invention;
FIG. 2 is a first structural diagram of another angle of a pair of color AR glasses according to an embodiment of the present invention;
fig. 3 is a first structural schematic diagram of a projection light engine in color AR glasses according to an embodiment of the present invention;
fig. 4 is a second structural schematic diagram of a pair of color AR glasses according to an embodiment of the present invention;
FIG. 5 is a second schematic structural view of another angle of the color AR glasses according to the embodiment of the present invention;
fig. 6 is a second structural schematic diagram of a projection light engine in color AR glasses according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic view of a first structure of color AR glasses according to an embodiment of the present invention, where the color AR glasses include a waveguide template 100, and the waveguide template 100 is provided with an entrance pupil area, an exit pupil area, and a projection optical engine for performing beam coupling on the entrance pupil area, and the projection optical engine is a Micro LED panel;
with reference to fig. 2, the entrance pupil region includes a first entrance pupil region 111, a second entrance pupil region 112, and a third entrance pupil region 113, and the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 are uniformly distributed on the central axis of the waveguide sheet template 100 and located above the nose bridge of the waveguide sheet template 100; the pupil expanding region comprises a first pupil expanding region 121 and a second pupil expanding region 122, and the first pupil expanding region 121 and the second pupil expanding region 122 are symmetrically arranged at the left side and the right side of the entrance pupil region; the exit pupil regions include a first exit pupil region 131 and a second exit pupil region 132, the first exit pupil region 131 and the second exit pupil region 132 being located below the first pupil expanding region 121 and the second pupil expanding region 122, respectively;
the projection light machines include a first projection light machine 141, a second projection light machine 142 and a third projection light machine 143, the first projection light machine 141, the second projection light machine 142 and the third projection light machine 143 are respectively configured with the first entrance pupil region 111, the second entrance pupil region 112 and the third entrance pupil region 113, and the first projection light machine 141, the second projection light machine 142 and the third projection light machine 143 respectively project one color light of three colors of RGB.
In this embodiment, the waveguide template 100 includes three entrance pupil regions, i.e., a first entrance pupil region 111, a second entrance pupil region 112, and a third entrance pupil region 113; two pupil expansion regions, namely a first pupil expansion region 121 and a second pupil expansion region 122; two exit pupil regions, a first exit pupil region 131 and a second exit pupil region 132. The three entrance pupil regions are located on the central axis of the waveguide sheet template 100 and above the nose bridge, and are in mirror symmetry. Wherein the first entrance pupil region 111 is located on the central axis of the waveguide, and is a middle entrance pupil; the second entrance pupil region 112 is located at the left side of the first entrance pupil region, which is a left-side entrance pupil; the third entrance pupil region 113 is located to the right of the first entrance pupil region, being the right-hand entrance pupil. Meanwhile, the first, second and third entrance pupil regions 111, 112 and 113 are respectively configured with the first, second and third projectors 141, 142 and 143. The first pupil expanding region 121 is located on the left side of the second entrance pupil region 112, and the second pupil expanding region 122 is located on the right side of the third entrance pupil region 113. The first exit pupil region 131 is located directly below the first expanded pupil region 121, and the second exit pupil region 131 is located directly below the second expanded pupil region 122.
At present, the color AR display generally projects images by using DLP or LCOS technology, but the emergent brightness of the solutions is not ideal. The Micro LED has the greatest advantage of extremely high luminous intensity, and the characteristic perfectly compensates the defect of low light energy utilization rate of the diffraction waveguide, so that the image brightness can reach the degree that human eyes can watch the image comfortably. The introduction of the three primary color light is the single color characteristic of the compensated Micro LED, so that the image has higher brightness and richer and fuller color. Therefore, the embodiment adopts the projection light machine comprising the Micro LED panel to project the RGB three-color light, so as to successfully display the color image on the AR glasses, and ensure the brightness of the light, and the color is richer and fuller.
The projection light machine described in this embodiment adopts the Micro LED panel technology, and configures one projection light machine for each entrance pupil channel, and each projection light machine controls different color lights to realize color display. The first projector 141 is responsible for coupling the light beams of the first entrance pupil region 111, the second projector 142 is responsible for coupling the light beams of the second entrance pupil region 112, and the third projector 143 is responsible for coupling the light beams of the third entrance pupil region 113. In a specific application scenario, the first projector 141, the second projector 142, and the third projector 143 respectively project red light, blue light, and green light. In addition, in order to ensure the light combining and exit pupil effects, the three display panels need to be on the same plane.
After the Micro LED is started, image light is collimated by the projection lens, exits the projector, propagates towards the waveguide entrance pupil area and is an entrance pupil light path. Diffraction occurs on the entrance pupil grating and propagates by total reflection. Wherein the + 1 st order diffracted light propagates toward the second pupil expanding region 122 as a right first light path, after contacting the second pupil expanding grating, a part of light propagates toward the second exit pupil region 132 through diffraction as a right second light path, and the other part of light continues to propagate and transversely expands the pupil; after the right second optical path contacts the second exit pupil grating, a part of light is coupled out of the waveguide through diffraction and propagates towards the human eye direction, and is the right exit pupil optical path, and the other part of light continues to propagate and is longitudinally expanded.
In the entrance pupil light path, the-1 st order diffracted light propagates toward the first pupil expansion area 121, which is a left first light path, after contacting the first pupil expansion grating, a part of light propagates toward the first exit pupil area 131 through diffraction, which is a left second light path, and the other part of light continues to propagate and performs transverse pupil expansion; after the left second optical path contacts the first exit pupil grating, a part of light is coupled out of the waveguide through diffraction and propagates towards the human eye direction, and is a left exit pupil optical path, and the other part of light continues to propagate and is longitudinally expanded.
In one embodiment, the waveguide sheet template 100 is a double-sided diffractive butterfly waveguide. Namely, the AR glasses are diffraction waveguides with butterfly structures, the flatness of the diffraction waveguides is high, and the left side structures and the right side structures are in mirror symmetry.
In an embodiment, the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 are uniformly arranged side by side, and geometric centers of the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 are located on the same horizontal line.
In this embodiment, three entrance pupil regions are arranged in a row on the central axis of the waveguide plate 100 and above the nose bridge. It is understood that the central axis is substantially a line, and the area of the three entrance pupil regions is necessarily larger than the width of the central axis, so that the three entrance pupil regions are uniformly arranged on the central axis, the middle entrance pupil region is located on the central axis, and the left and right entrance pupil regions are respectively arranged on both sides of the central axis.
Further, as shown in fig. 3, in an embodiment, the first projection light machine 141, the second projection light machine 142, and the third projection light machine 143 are uniformly disposed above the entrance pupil region side by side, and respectively correspond to the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 one by one, geometric centers of the first projection light machine 141, the second projection light machine 142, and the third projection light machine 143 are located on the same horizontal line, and each of the first projection light machine 141, the second projection light machine 142, and the third projection light machine 143 includes Micro LED panels (e.g. 301, 302, and 303 in fig. 3), a projection lens (e.g. 311, 312, and 313 in fig. 3), and a corner prism (e.g. 321, 322, and 323 in fig. 3) sequentially disposed from inside to outside, for coupling the light beam into the entrance pupil region.
In this embodiment, since the three entrance pupil regions are arranged side by side, the three projectors are also arranged side by side so as to correspond to each other, and their geometric centers are located on the same horizontal line. In addition, the optical projection engine described in this embodiment is composed of a display panel, a projection lens, and a corner prism. The display panel adopts Micro LED panel technology, three panels are connected together and keep coplanar, and each panel is respectively responsible for displaying one of RGB three-color light. The projection lens is a lens group consisting of a plurality of lenses, the equivalent focal plane of the projection lens coincides with the display panel, and the lens group collimates the display panel. The 3 projection light machines are integrally arranged above the entrance pupil area, the exit pupil of the light machine faces downwards, and the light path is deflected through the corner prism, so that the projection light beams enter the entrance pupil area.
In one embodiment, the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 are uniformly arranged in a triangular shape.
In this embodiment, as shown in fig. 4 and 5, the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 may also be uniformly distributed on the central axis of the waveguide sheet template 100 and above the nose bridge according to a triangular pattern. In a specific embodiment, a line connecting geometric centers of the first, second and third entrance pupil regions 111, 112 and 113 is an equilateral triangle.
Further, with reference to fig. 6, in an embodiment, the first, second and third light projectors 141, 142 and 143 are disposed in a triangular shape facing the first, second and third entrance pupil areas 111, 112 and 113, and the first, second and third light projectors 141, 142 and 143 each include Micro LED panels (e.g. 601, 602 and 603 in fig. 6) and projection lenses (e.g. 611, 612 and 613 in fig. 6) disposed in sequence from inside to outside.
The three entrance pupil regions are distributed in a triangular shape, and correspondingly, the three projection light machines can also be correspondingly distributed in a triangular shape. It should be noted here that, in order to ensure that the beam angle and the spot size are consistent during coupling and to ensure coplanarity of the Micro LED base plate, the optical projector needs to project an image in a normal incidence manner, and therefore, a corner prism does not need to be installed.
In addition, to ensure successful combining of the three colors, the positions and intervals of the three entrance pupil regions need to be designed and processed more precisely to prevent the color light from separating.
In one embodiment, the entrance pupil region, the expanded pupil region and the exit pupil region are all arranged by using diffraction gratings.
In this embodiment, the gratings in the entrance pupil region, the pupil expanding region and the exit pupil region are all diffraction gratings. Further, the diffraction grating may be specifically a surface relief grating, or a volume holographic grating.
In one embodiment, the first entrance pupil region 111, the second entrance pupil region 112, and the third entrance pupil region 113 are all circular regions, and the diameter of the circular region is 2.5mm to 7 mm;
the grating directions of the diffraction gratings of the first entrance pupil region 111, the second entrance pupil region 112 and the third entrance pupil region 113 are all parallel to a horizontal line, and the grating periods are all 330 mm-450 mm.
In the embodiment, the diameters D of the three entrance pupil areas are all 2.5-7 mm, the three entrance pupil areas are consistent in size and are provided with diffraction gratings with the same period, the grating direction of the diffraction gratings is parallel to the horizontal line, and the grating period can be 330-450 nm. In a specific application scenario, the diameter D of the three entrance pupil regions is 5mm, and the grating period is 400 mm.
In one embodiment, the maximum width of the first pupil expanding region 121 or the second pupil expanding region 122 is 5 to 10 times the diameter of the entrance pupil region, the maximum height is 2 to 5 times the diameter of the entrance pupil region, and the height of the first pupil expanding region 121 or the second pupil expanding region 122 is the lowest on the side close to the entrance pupil region and the highest on the side far away from the entrance pupil region;
the grating periods of the diffraction gratings of the first pupil expanding region 121 and the second pupil expanding region 122 are the same, wherein an included angle between the grating direction of the first pupil expanding region 121 and a horizontal line is 40-50 degrees, and the included angle faces the first exit pupil region 131; an included angle between the grating direction of the second pupil expanding region 122 and a horizontal line is 130-140 degrees, and the included angle faces the second exit pupil region 132;
the first and second pupil expansion regions 121 and 122 have mirror symmetry in size, structure, position and grating characteristics.
In this embodiment, the two pupil expansion areas are quadrilateral areas with a maximum width W1 and a maximum height H, where the maximum width W may be 5-10 times of the diameter D of the entrance pupil area, the maximum height may be 2-5 times of the diameter D of the entrance pupil area, and the height of the side close to the entrance pupil area is the lowest, and the height of the side far away from the entrance pupil area is the highest. Diffraction gratings with the same period are arranged in the pupil expansion area, wherein the included angle between the grating direction of the first pupil expansion area 121 and the horizontal line is 40-50 degrees and faces the first exit pupil area 131; the grating direction of the second pupil expanding region 122 forms an angle of 130 degrees to 140 degrees with the horizontal line, and the angle is toward the second exit pupil region 132. The first and second pupil areas 121 and 122 are strictly mirror-symmetrical in size, structure, position, and grating characteristics.
In a specific application scenario, the maximum width W1 of the first pupil expanding region 121 or the second pupil expanding region 122 is 8 times the diameter D of the entrance pupil region, and the maximum height may be 3 times the diameter D of the entrance pupil region. The grating direction of the first pupil expanding region 121 forms an included angle of 450 degrees with the horizontal line, and the included angle faces the first exit pupil region 131; the grating direction of the second expanded pupil region 122 makes an angle of 135 ° with the horizontal, towards the second exit pupil region 132.
In one embodiment, the length of the first exit pupil region 131 or the second exit pupil region 132 is 80% to 90% of the width of the first pupil region 121 or the second pupil region 122, the length of the first exit pupil region 131 or the second exit pupil region 132 is 3 to 6 times of the diameter of the entrance pupil region, and the ratio of the length to the width of the first exit pupil region 131 or the second exit pupil region 132 is 16:9 or 4: 3;
the grating periods of the diffraction gratings of the first exit pupil region 131 and the second exit pupil region 132 are the same, the grating direction is perpendicular to the horizontal line, and the grating period is 330mm to 450 mm;
the first exit pupil region 131 and the second exit pupil region 132 have mirror symmetry in size, structure, position and grating characteristics.
Further, in an embodiment, the distance between the geometric centers of the first exit pupil region 131 and the second exit pupil region 132 is 60mm to 70 mm.
In this embodiment, the exit pupil region has a length L and a width W2, the length L may be 80% to 90% of W1 (i.e., the maximum width of the pupil expansion region), the width W2 may be 3 to 6 times of the diameter D of the entrance pupil region, and L: W2 is 16:9 or L: W2 is 4:3, wherein the exit pupil region is provided with diffraction gratings having the same period, the grating direction of the diffraction gratings is perpendicular to the horizontal line, the grating period may be 330mm to 450nm, and the first exit pupil region 131 and the second exit pupil region 132 have strict mirror symmetry in size, structure, position and grating characteristics.
In a specific application scenario, the length L of the first exit pupil region 131 or the second exit pupil region 132 is 85% of W1, the width W2 may be 46 times the diameter D of the entrance pupil region, and L: W2 is 16: 9. The grating period of the diffraction grating of the first exit pupil region 131 or the second exit pupil region 132 is 400 mm.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to separate one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. The color AR glasses are characterized by comprising a waveguide template, wherein the waveguide template is provided with an entrance pupil area, an expansion pupil area, an exit pupil area and a projection optical machine for carrying out light beam coupling on the entrance pupil area, and the projection optical machine adopts a Micro LED panel;
the entrance pupil region comprises a first entrance pupil region, a second entrance pupil region and a third entrance pupil region, and the first entrance pupil region, the second entrance pupil region and the third entrance pupil region are uniformly distributed on the central axis of the waveguide plate template and are positioned above the nose bridge of the waveguide plate template; the pupil expanding region comprises a first pupil expanding region and a second pupil expanding region, and the first pupil expanding region and the second pupil expanding region are symmetrically arranged at the left side and the right side of the entrance pupil region; the exit pupil region comprises a first exit pupil region and a second exit pupil region, and the first exit pupil region and the second exit pupil region are respectively positioned below the first expanded pupil region and the second expanded pupil region;
the projection ray apparatus includes first projection ray apparatus, second projection ray apparatus and third projection ray apparatus, first projection ray apparatus, second projection ray apparatus and third projection ray apparatus with first entrance pupil region, second entrance pupil region and third entrance pupil region are disposed mutually respectively, just first projection ray apparatus, second projection ray apparatus and third projection ray apparatus project a chromatic light in three kinds of colours RGB respectively.
2. The color AR glasses according to claim 1, wherein said first, second and third entrance pupil regions are uniformly arranged side by side, and the geometric centers of said first, second and third entrance pupil regions are located on the same horizontal line.
3. The color AR glasses according to claim 2, wherein the first, second and third projectors are disposed side by side above the entrance pupil area, and are respectively corresponding to the first, second and third entrance pupil areas one by one, the geometric centers of the first, second and third projectors are located on the same horizontal line, and the first, second and third projectors each include a Micro LED panel, a projection lens and a corner prism for coupling the light beam into the entrance pupil area, which are sequentially disposed from inside to outside.
4. The color AR glasses according to claim 1, wherein the first, second and third entrance pupil regions are uniformly arranged in a triangular shape.
5. The color AR glasses according to claim 4, wherein the first, second and third projectors are disposed in a triangular shape facing the first, second and third entrance pupil regions, and each of the first, second and third projectors comprises a Micro LED panel and a projection lens sequentially disposed from inside to outside.
6. The color AR glasses according to claim 1, wherein the entrance pupil area, the exit pupil area and the expanded pupil area are all arranged with diffraction gratings.
7. The AR glasses according to claim 6, wherein the first, second and third entrance pupil regions are circular regions, and the diameter of the circular regions is 2.5mm to 7 mm;
the grating directions of the diffraction gratings of the first entrance pupil area, the second entrance pupil area and the third entrance pupil area are all parallel to a horizontal line, and the grating periods are all 330-450 mm.
8. The AR spectacles of claim 6, wherein the first or second pupil expansion area has a maximum width of 5 to 10 times the diameter of the entrance pupil area and a maximum height of 2 to 5 times the diameter of the entrance pupil area, and the first or second pupil expansion area has the lowest height on the side close to the entrance pupil area and the highest height on the side far away from the entrance pupil area;
the grating periods of the diffraction gratings in the first pupil expanding region and the second pupil expanding region are the same, wherein the included angle between the grating direction of the first pupil expanding region and the horizontal line is 40-50 degrees and faces the first exit pupil region; an included angle between the grating direction of the second pupil expansion region and a horizontal line is 130-140 degrees, and the included angle faces the second exit pupil region;
the first pupil expanding area and the second pupil expanding area are mirror-symmetrical in size, structure, position and grating characteristics.
9. The AR glasses according to claim 6, wherein the length of the first or second exit pupil area is 80% -90% of the width of the first or second pupil area, the length of the first or second exit pupil area is 3-6 times the diameter of the entrance pupil area, and the ratio of the length to the width of the first or second exit pupil area is 16:9 or 4: 3;
the grating periods of the diffraction gratings in the first exit pupil region and the second exit pupil region are the same, the grating direction is vertical to a horizontal line, and the grating period is 330-450 mm;
the first exit pupil area and the second exit pupil area are mirror-symmetrical in size, structure, position and grating characteristics.
10. The color AR glasses according to claim 9, wherein the distance between the geometric centers of the first and second exit pupil areas is 60mm to 70 mm.
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| CN202111006438.7A CN113687514A (en) | 2021-08-30 | 2021-08-30 | Colored AR glasses |
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| CN202111006438.7A CN113687514A (en) | 2021-08-30 | 2021-08-30 | Colored AR glasses |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415377A (en) * | 2022-01-25 | 2022-04-29 | 深圳七泽技术合伙企业(有限合伙) | Head-up display |
| CN114740633A (en) * | 2022-04-14 | 2022-07-12 | 深圳七泽技术合伙企业(有限合伙) | Large exit pupil display device, three-dimensional volume display equipment and method |
| CN114859553A (en) * | 2022-06-06 | 2022-08-05 | 深圳市光舟半导体技术有限公司 | Double-channel waveguide and AR glasses with large visual field and left-right color separation |
| WO2024058914A1 (en) * | 2022-09-14 | 2024-03-21 | Microsoft Technology Licensing, Llc | Near-eye display systems utilizing an array of projectors |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764261A (en) * | 2019-09-18 | 2020-02-07 | 深圳市瞐客科技有限公司 | Optical waveguide structure, AR equipment optical imaging system and AR equipment |
| CN111240015A (en) * | 2020-01-17 | 2020-06-05 | 北京理工大学 | Diffraction waveguide with uniform double-side outgoing light |
| CN111812845A (en) * | 2020-07-31 | 2020-10-23 | 深圳珑璟光电技术有限公司 | Near-to-eye display device and display method |
| CN113009698A (en) * | 2021-03-29 | 2021-06-22 | 奥提赞光晶(山东)显示科技有限公司 | Color display system and method and AR glasses |
-
2021
- 2021-08-30 CN CN202111006438.7A patent/CN113687514A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764261A (en) * | 2019-09-18 | 2020-02-07 | 深圳市瞐客科技有限公司 | Optical waveguide structure, AR equipment optical imaging system and AR equipment |
| CN111240015A (en) * | 2020-01-17 | 2020-06-05 | 北京理工大学 | Diffraction waveguide with uniform double-side outgoing light |
| CN111812845A (en) * | 2020-07-31 | 2020-10-23 | 深圳珑璟光电技术有限公司 | Near-to-eye display device and display method |
| CN113009698A (en) * | 2021-03-29 | 2021-06-22 | 奥提赞光晶(山东)显示科技有限公司 | Color display system and method and AR glasses |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415377A (en) * | 2022-01-25 | 2022-04-29 | 深圳七泽技术合伙企业(有限合伙) | Head-up display |
| CN114415377B (en) * | 2022-01-25 | 2023-10-31 | 深圳七泽技术合伙企业(有限合伙) | Head-up display |
| CN114740633A (en) * | 2022-04-14 | 2022-07-12 | 深圳七泽技术合伙企业(有限合伙) | Large exit pupil display device, three-dimensional volume display equipment and method |
| CN114859553A (en) * | 2022-06-06 | 2022-08-05 | 深圳市光舟半导体技术有限公司 | Double-channel waveguide and AR glasses with large visual field and left-right color separation |
| WO2024058914A1 (en) * | 2022-09-14 | 2024-03-21 | Microsoft Technology Licensing, Llc | Near-eye display systems utilizing an array of projectors |
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