CN112394510A - Apparatus for presenting image and system for implementing augmented reality display - Google Patents
Apparatus for presenting image and system for implementing augmented reality display Download PDFInfo
- Publication number
- CN112394510A CN112394510A CN201910748865.9A CN201910748865A CN112394510A CN 112394510 A CN112394510 A CN 112394510A CN 201910748865 A CN201910748865 A CN 201910748865A CN 112394510 A CN112394510 A CN 112394510A
- Authority
- CN
- China
- Prior art keywords
- optical
- function structure
- optical function
- waveguide lens
- optical waveguide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003190 augmentative effect Effects 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 294
- 238000009877 rendering Methods 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- 210000001747 pupil Anatomy 0.000 description 8
- 206010049155 Visual brightness Diseases 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention relates to image display technology, and more particularly, to an apparatus for presenting an image and a system for implementing an augmented reality display including the same. The apparatus for presenting an image includes: an optical waveguide lens; and first to fourth optical function structures disposed on the surface of the optical waveguide lens, wherein the first and second optical function structures are located in the middle of the optical waveguide lens, and the third and fourth optical function structures are located on both sides of the surface of the optical waveguide lens, wherein light is coupled into the optical waveguide lens through the first optical function structure, then reaches the second optical function structure through total reflection, and under the action of the second optical function structure, first and second diffracted light beams are generated, which reach the third and fourth optical function structures through total reflection within the optical waveguide lens and exit from the third and fourth optical function structures, respectively, wherein the third and fourth optical function structures have structural parameters whose distance with respect to the second optical function structure gradually changes.
Description
Technical Field
The present invention relates to image display technology, and more particularly, to an apparatus for presenting an image and a system for implementing an augmented reality display including the same.
Background
Augmented Reality (AR) technology is a new type of display technology that integrates real world information and virtual world information "seamlessly". The method not only displays the information of the real world, but also displays the virtual information at the same time, thereby realizing the mutual supplement and superposition of the two kinds of information. In visual augmented reality, a blended image of the real world superimposed with a computer-generated virtual image is presented to a user using a head-mounted display.
Most of the current mainstream near-eye augmented reality display devices adopt the optical waveguide principle. For example, in a typical augmented reality display device, an image on a microdisplay spatial light modulator (e.g., LCOS) is coupled into an optical waveguide through three holographic gratings, then transmitted through three optical waveguides, respectively, and finally coupled out through corresponding holographic gratings right in front of the human eye for projection to the human eye. In order to realize color projection, a multilayer optical waveguide mode can be adopted. However, there are a number of disadvantages to augmented reality display devices based on the above principles of operation. For example, the problem of abrupt changes in the visual brightness within the viewing window is not well addressed.
Disclosure of Invention
It is an object of the invention to provide an apparatus for presenting an image that is capable of providing a good balance of efficiency in the exit pupil range, thereby avoiding abrupt changes in visual brightness.
An apparatus for presenting an image according to an aspect of the present invention includes:
an optical waveguide lens; and
a first optical function structure, a second optical function structure, a third optical function structure and a fourth optical function structure which are arranged on the surface of the optical waveguide lens,
wherein the first and second optical functional structures are located in the middle of the optical waveguide lens, and the third and fourth optical functional structures are located on both sides of the surface of the optical waveguide lens,
wherein, the light enters the optical waveguide lens through the first optical function structure, then reaches the second optical function structure through total reflection, and under the action of the second optical function structure, generates a first diffracted light beam and a second diffracted light beam, and the first diffracted light beam and the second diffracted light beam respectively reach the third optical function structure and the fourth optical function structure through total reflection in the optical waveguide lens and exit from the third optical function structure and the fourth optical function structure.
Wherein the third and fourth optical functional structures have structural parameters that gradually change in distance relative to the second optical functional structure.
Preferably, in the above apparatus, the first optical function structure, the third optical function structure and the fourth optical function structure are one-dimensional gratings, and the second optical function structure is a two-dimensional grating.
Preferably, in the above apparatus, the one-dimensional grating is one of: tilted gratings, rectangular gratings, blazed gratings, and bulk gratings.
Preferably, in the above apparatus, the third optical function structure and the fourth optical function structure are one-dimensional gratings with gradually changed grating heights, wherein the heights increase with increasing distance of the one-dimensional gratings relative to the second optical function structure.
Preferably, in the above apparatus, the third optical function structure and the fourth optical function structure are one-dimensional gratings with gradually changed duty ratios, wherein the duty ratios increase with increasing distances of the one-dimensional gratings from the second optical function structure.
Preferably, in the above apparatus, the first optical function structure is spaced apart from the second optical function structure in a first direction so that the light beam reaches the second optical function structure from the first optical function structure in the first direction within the optical waveguide lens, and the third and fourth optical function structures are located on both sides of the second optical function structure in a second direction different from the first direction so that the first diffracted light beam and the second diffracted light beam reach the third and fourth optical function structures, respectively, in the second direction within the optical waveguide lens.
Preferably, in the above apparatus, the first direction is perpendicular to the second direction.
Preferably, in the above device, the first optical function structure, the second optical function structure, the third optical function structure and the fourth optical function structure are located on the same surface of the optical waveguide lens.
It is yet another object of the present invention to provide a system for implementing an augmented reality display that provides a good balance of efficiency across the exit pupil, thereby avoiding abrupt changes in visual brightness.
A system for implementing an augmented reality display according to another aspect of the present invention comprises:
an image source; and
at least one image rendering device, each said image rendering device comprising:
an optical waveguide lens; and
a first optical function structure and a second optical function structure arranged on the surface of the optical waveguide lens
Two optical functional structures, a third optical functional structure and a fourth optical functional structure,
wherein the first and second optical functional structures are located in the middle of the optical waveguide lens, and the third and fourth optical functional structures are located on both sides of the surface of the optical waveguide lens,
wherein light from the image source is coupled into the optical waveguide lens through the first optical function structure, then reaches the second optical function structure through total reflection, and under the action of the second optical function structure, generates a first diffracted light beam and a second diffracted light beam, which respectively reach the third optical function structure and the fourth optical function structure through total reflection in the optical waveguide lens and exit from the third optical function structure and the fourth optical function structure,
wherein the third and fourth optical functional structures have structural parameters that gradually change in distance relative to the second optical functional structure.
In the image rendering device according to the above-described embodiment of the present invention, the third optical function structure and the fourth optical function structure are designed such that the structural parameters thereof gradually change with respect to the distance of the second optical function structure, and in particular, such that the diffraction efficiency thereof is higher in a region where the third optical function structure and the fourth optical function structure are farther from the second optical function structure, thereby achieving the balance of efficiency in the exit pupil range. Further, in the embodiment of the present invention, the third optical function structure and the fourth optical function structure are disposed on both sides of the surface of the optical waveguide lens, and the first optical function structure and the second optical function structure are disposed between the third optical function structure and the fourth optical function structure or in the center of the optical waveguide lens. In general, the size of the optical waveguide lens in the horizontal direction is larger than that in the vertical direction, so the arrangement mode can obviously increase the occupied area of the third optical functional structure and the fourth optical functional structure, thereby enlarging the exit pupil window. Further, the image presenting apparatus according to the above-described embodiment of the present invention is simple and compact in structure, which is advantageous in downsizing the entire apparatus.
Drawings
Fig. 1A and 1B are a top view and a perspective view, respectively, of an apparatus for presenting an image according to an embodiment of the present invention.
FIGS. 2A-2C show optical diffraction diagrams of one-dimensional gratings that may be applied to the embodiments shown in FIGS. 1A and 1B.
Fig. 3 shows an example of a hologram diffraction element applicable to the embodiment shown in fig. 1A and 1B.
Fig. 4 is a schematic cross-sectional view of the apparatus for presenting an image shown in fig. 1A and 1B, the cross-section being shown in the Y-Z plane of fig. 1B.
Fig. 5 is a schematic cross-sectional view of the apparatus for presenting an image shown in fig. 1A and 1B, the cross-section being shown in the X-Z plane of fig. 1B.
Figure 6 shows the trend of the-1 order diffraction efficiency of a tilted grating versus the grating height.
FIG. 7 is a schematic diagram of a gradient grating with gradually changed height, which can be applied to the above-mentioned embodiment of the present invention.
Figure 8 shows the trend of the-1 order diffraction efficiency of a tilted grating versus the grating duty cycle.
FIG. 9 is a schematic diagram of a tilted grating with a gradually changing duty cycle that can be applied to the above embodiments of the present invention.
Fig. 10 is a schematic diagram of a system for implementing an augmented reality display according to another embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Fig. 1A and 1B are a top view and a perspective view, respectively, of an apparatus for presenting an image according to an embodiment of the present invention. Illustratively, the apparatus for presenting an image of the present embodiment may take the form of a spectacle lens.
Referring to fig. 1A and 1B, the apparatus 10 for presenting an image of the present embodiment includes an optical waveguide lens 110, and a first optical function structure 121, a second optical function structure 122, a third optical function structure 123, and a fourth optical function structure 124 provided on a surface of the optical waveguide lens.
Optionally, the first optical functional structure 121, the second optical functional structure 122, the third optical functional structure 123 and the fourth optical functional structure 124 are nano-structures to form diffracted light. Further, optionally, these optically functional structures are located on the same surface or different surfaces of the optical waveguide lens 110.
In the embodiment shown in fig. 1A and 1B, the first optical functional structure 121 is configured to couple incident light from an image source (not shown) into the optical waveguide lens 110 and propagate along the Y-direction, and thus may also be referred to as a coupling-in region; the second optical functional structure 122 is configured to split a light ray into two light rays (hereinafter referred to as a first diffracted light beam and a second diffracted light beam) and guide to the third optical functional structure 123 and the fourth optical functional structure 124 in two left and right directions, respectively (i.e., in the reverse direction and the forward direction along the X-axis in fig. 1A and 1B), and thus may also be referred to as a transition region; the third optical functional structure 123 and the fourth optical functional structure 124 are configured to respectively direct the first diffracted light beam and the second diffracted light beam out of the optical waveguide lens 110 in the Z-direction to present an image of augmented reality to a user, and thus the optical functional structures 123 and 124 may also be referred to as out-coupling regions.
As shown in fig. 1A and 1B, the third optical function structure 123 and the fourth optical function structure 124 are exemplarily located at both sides of the surface of the optical waveguide lens 110. Meanwhile, the first optical function structure 121 and the second optical function structure 122 are located in the middle of the optical waveguide lens 110, i.e. between the third optical function structure 123 and the fourth optical function structure 124.
In the present embodiment, the third optical function structure 123 and the fourth optical function structure 124 may be designed to gradually change their structural parameters with respect to the distance of the second optical function structure 122, so that the farther the third optical function structure 123 and the fourth optical function structure 124 are from the second optical function structure 122, the higher the diffraction efficiency thereof is, thereby achieving the balance of efficiency in the exit pupil range. The structural parameters described herein include, for example, but are not limited to, the height and duty cycle of the grating.
In the present embodiment, the first optical functional structure 121, the third optical functional structure 123, and the third optical functional structure 124 are exemplarily implemented in the form of a one-dimensional grating, and the second optical functional structure 122 is implemented in the form of a holographic diffraction element. Alternatively, the one-dimensional grating may be selected from one or more of the following groups: tilted gratings, rectangular gratings, blazed gratings, and bulk gratings.
Fig. 2A-2C show optical diffraction diagrams of one-dimensional gratings that can be applied to the embodiments shown in fig. 1A and 1B, where fig. 2A shows an optical diffraction diagram of a rectangular grating, fig. 2B shows an optical diffraction diagram of a tilted grating, and fig. 2C shows an optical diffraction diagram of a blazed grating.
Referring to fig. 2A, a rectangular grating 221A is formed on the surface of the optical waveguide lens 210, and the light incident on the grating surface at a certain angle is diffracted by the rectangular grating by selecting the structural parameters such as the height, width, period, etc. of the grating. The diffracted light includes zero-order diffracted light T0-1 st order diffraction light T-1And 1 st order diffracted light T1. In the case shown in FIG. 2A, the 0 th order diffraction efficiency is the highest, the-1 st order diffraction is the lowest, and the 1 st order diffraction efficiency is the lowest. Alternatively, the rectangular grating 221A shown in FIG. 2A can be used to form the-1 st order diffracted light, which then completes its propagation within the optical waveguide lens 210.
Referring to fig. 2B, the tilted grating 221B is formed on the surface of the optical waveguide lens 210, and the light incident on the grating surface at a certain angle is diffracted by the tilted grating through selecting the structural parameters such as the height, width, period and tilt angle of the grating. Similarly, the diffracted light includes zero-order diffracted light T0-1 st order diffraction light T-1And 1 st order diffracted light T1. In the case shown in FIG. 2B, the-1 st order diffraction efficiency is the highest, and the 1 st order diffraction efficiency is the lowest. Alternatively, the-1 st order diffracted light can be formed by using the tilted grating shown in FIG. 2B, and then its propagation within the optical waveguide lens 210 is completed. In addition, by optimizing one or more of the structural parameters such as the height, width, period, and tilt angle of the grating, a wavelength selection function can be realized, that is, the diffraction efficiency of light in a certain wavelength range can be made high, while the diffraction efficiency of light in the remaining wavelength ranges is made low.
Referring to FIG. 2C, blazed grating 221C is formed on the lightwaveThe surface of the guiding lens 210 is diffracted by the blazed grating of the light rays incident on the grating surface at a certain angle by selecting the structural parameters such as the grating height, the period and the blazed angle. Similarly, the diffracted light includes zero-order diffracted light T0-1 st order diffraction light T-1And 1 st order diffracted light T1. In the case shown in fig. 2C, the-1 st order diffraction efficiency is the highest, and the zeroth order diffraction and the 1 st order diffraction efficiency are the lowest. Alternatively, the-1 st order diffracted light can be formed by using the tilted grating shown in FIG. 2C, and then its propagation within the optical waveguide lens 210 is completed. In addition, the wavelength selection function can be realized by optimizing one or more of the structural parameters such as the height, the period and the blaze angle of the grating.
Fig. 3 shows an example of a hologram diffraction element or a second optical function structure applicable to the embodiment shown in fig. 1A and 1B. As shown in fig. 3, holographic diffraction element 322 takes the form of a two-dimensional array. The light is coupled into the optical waveguide lens through the first optical function structure and propagates in the optical waveguide lens, and when the propagating light is incident to the holographic diffraction element 322, it will be diffracted and deflected at an angle. Alternatively, the hologram diffraction element 322 is designed such that two diffracted light rays, which are respectively transmitted to the third optical function structure 123 and the fourth optical function structure 124 in the left and right directions, can be formed.
The following describes the operating principle of the apparatus for presenting an image shown in fig. 1A and 1B.
Fig. 4 is a schematic cross-sectional view of the apparatus for presenting an image shown in fig. 1A and 1B, the cross-section being shown in the Y-Z plane of fig. 1B.
Referring to fig. 4, light emitted from the image source 20 reaches the first optical functional structure 121. The light is introduced into the optical waveguide lens 110 by diffraction of the first optical function structure 121. By selecting suitable structural parameters for the first optical functional structure 121, the light with the highest diffraction efficiency can be totally reflected inside the optical waveguide lens 110. As shown in fig. 4, the first optical function structure 121 and the second optical function structure 122 are spaced apart from each other in the Y direction, and the light beams having total reflection reach the second optical function structure 122 from the first optical function structure 121 by total reflection.
Fig. 5 is a schematic cross-sectional view of the apparatus for presenting an image shown in fig. 1A and 1B, the cross-section being shown in the X-Z plane of fig. 1B.
Referring to fig. 5 in conjunction with fig. 4, it can be seen that total reflection continues to occur in the optical waveguide lens 110 upon reaching the second optical function structure 122, but the propagation direction is changed from along the Y direction to along the X direction. As shown in fig. 5, the second optical functional structure 122 (e.g., in the form of a holographic diffraction element) splits the light into first and second diffracted beams that propagate in the reverse and forward directions of the X-axis, respectively, to the third and fourth optical functional structures 123 and 124. Under the diffractive action of the third optical functional structure 123 and the fourth optical functional structure 124, the first diffracted light beam and the second diffracted light beam subsequently exit from the optical waveguide lens 110 in the Z direction, thereby presenting an image of augmented reality to the user.
Fig. 6 shows the trend of the-1 order diffraction efficiency of the tilted grating with respect to the grating height, in which the horizontal axis represents the grating height and the vertical axis represents the diffraction efficiency. In the situation shown in fig. 6, the tilt angle 30 of the tilted grating0The grating period is 400nm and the duty cycle is 0.5. As shown in FIG. 6, when the grating height was varied in the range of 200-400nm, the diffraction efficiency increased from 43% to 95%. Therefore, in order to achieve efficiency equalization in the exit pupil range and thus avoid bright and dark windows due to gradual or abrupt brightness changes, the third optical functional structure 123 and the fourth optical functional structure 124 may be designed as tilted gratings with gradually changing heights. FIG. 7 is a schematic diagram of a gradient grating with gradually changed height, which can be applied to the above-mentioned embodiment of the present invention. As shown in fig. 7, the height of the slanted grating increases with increasing distance of the slanted grating from the second optical function structure 122 (i.e., the distance of the grating in the X-direction from the second optical function structure).
Fig. 8 shows the trend of the-1 order diffraction efficiency of the tilted grating with respect to the duty cycle of the grating, where the horizontal axis represents the duty cycle and the vertical axis represents the diffraction efficiency. In the situation shown in fig. 8, the tilt angle 30 of the tilted grating0The grating period is 400nm, the grating height is 300nm, and the change range of the duty ratio is 0.2-0.55. As shown in fig. 8It is shown that the diffraction efficiency increases from 20% to 96% when the duty cycle is varied in the range of 0.2-0.55. Therefore, in order to achieve efficiency equalization in the exit pupil range and thus avoid bright and dark windows due to gradual or abrupt brightness changes, the third optical functional structure 123 and the fourth optical functional structure 124 may be designed as tilted gratings with gradually changing duty ratios. FIG. 9 is a schematic diagram of a tilted grating with a gradually changing duty cycle that can be applied to the above embodiments of the present invention. As shown in fig. 9, the duty cycle of the tilted grating increases with increasing distance of the tilted grating relative to the second optical function 122.
It is noted that the above-described tilted grating with gradual height or duty cycle is merely exemplary. Alternatively, the height and the duty cycle may be simultaneously graded, and the grating is not limited to a tilted grating, and for other one-dimensional gratings (such as the aforementioned rectangular grating, blazed grating, and volume grating), the equalization of the efficiency in the exit pupil range may also be achieved by grading the structural parameters with distance.
Fig. 10 is a schematic diagram of a system for implementing an augmented reality display according to another embodiment of the present invention.
The system 1 as shown in fig. 10 includes image rendering devices 10A and 10B and an image source 20. The image source 20 is configured to provide light comprising a first component and a second component to the image rendering devices 10A and 10B. The image presentation devices 10A and 10B are configured to present an augmented reality image to a user. In the present embodiment, the image rendering devices 10A and 10B can be realized, for example, by the embodiments described above with reference to fig. 1A, 1B, 2A to 2C, and 3 to 9.
Taking the image rendering device 10A as an example, it includes an optical waveguide lens 110A, and a first optical function structure 121A, a second optical function structure 122A, a third optical function structure 123A and a fourth optical function structure 124A disposed on the surface of the optical waveguide lens. The first optical function structure 121A, the second optical function structure 122A, the third optical function structure 123A and the fourth optical function structure 124A are located on the same surface of the optical waveguide lens 110, wherein the first optical function structure 121A and the second optical function structure 122A are disposed in the middle of the surface of the optical waveguide lens, and the third optical function structure 123A and the fourth optical function structure 124A are disposed on two sides of the optical waveguide lens 110A.
In the system shown in fig. 10, the first optical functional structure 121A is configured to couple incident light rays from the image source 20 into the optical waveguide lens 110 and to propagate the light rays in a first direction (Y direction in fig. 1A and 1B) within the optical waveguide lens 110A. The light may reach the second optical function structure 122A by total reflection by causing the light to enter the optical waveguide lens at an appropriate angle.
After reaching the second optical function structure 122A, the light will be separated into a first diffracted light beam and a second diffracted light beam by the second optical function structure 122A. The first diffracted light beam propagates in the optical waveguide lens 110A in the opposite direction of the X axis, and reaches the fourth optical function structure 124A by total reflection. On the other hand, the second diffracted light beam propagates in the optical waveguide lens 110A in the forward direction of the X-axis, and reaches the fourth optical function structure 124A by total reflection. The third optical functional structure 123A and the fourth optical functional structure 124A are configured to direct the first diffracted beam and the second diffracted beam out of the optical waveguide lens 110 to present an augmented reality image to a user.
Illustratively, the first optical functional structure 121A, the third optical functional structure 123A and the fourth optical functional structure 124A are implemented in the form of a one-dimensional grating, while the second optical functional structure 122A is implemented in the form of a two-dimensional grating. Alternatively, the one-dimensional grating may be selected from one or more of the following groups: tilted gratings, rectangular gratings, blazed gratings, and bulk gratings.
The image rendering device 10B includes an optical waveguide lens 110B, and a first optical function structure 121B, a second optical function structure 122B, a third optical function structure 123B, and a fourth optical function structure 124B disposed on a surface of the optical waveguide lens, and the structure and the operation principle thereof are similar to those of the image rendering device 10A, and are not described herein again.
Referring to fig. 10, the system 1 for implementing augmented reality display further includes a connecting member 10C that connects the optical waveguide lenses 110A and 110B together.
The foregoing has described the principles and preferred embodiments of the present invention. However, the invention should not be construed as being limited to the particular embodiments discussed. The preferred embodiments described above should be considered as illustrative and not restrictive, and it should be understood that variations may be made in those embodiments by workers skilled in the art without departing from the scope of the present invention as defined by the following claims.
Claims (16)
1. An apparatus for presenting an image, comprising:
an optical waveguide lens; and
a first optical function structure, a second optical function structure, a third optical function structure and a fourth optical function structure which are arranged on the surface of the optical waveguide lens,
wherein the first and second optical functional structures are located in the middle of the optical waveguide lens, and the third and fourth optical functional structures are located on both sides of the surface of the optical waveguide lens,
wherein light is coupled into the optical waveguide lens through the first optical function structure, then reaches the second optical function structure through total reflection, and under the action of the second optical function structure, generates a first diffracted light beam and a second diffracted light beam, which respectively reach the third optical function structure and the fourth optical function structure through total reflection in the optical waveguide lens and exit from the third optical function structure and the fourth optical function structure,
wherein the third and fourth optical functional structures have structural parameters that gradually change in distance relative to the second optical functional structure.
2. An apparatus for rendering an image according to claim 1, wherein the first, third and fourth optically functional structures are one-dimensional gratings and the second optically functional structure is a two-dimensional grating.
3. An apparatus for rendering an image as in claim 2, wherein the one-dimensional grating is one of: tilted gratings, rectangular gratings, blazed gratings, and bulk gratings.
4. Apparatus for presenting an image according to claim 2, wherein the third and fourth optical functional structures are one-dimensional gratings of graduated grating height, wherein the height increases with increasing distance of the one-dimensional grating relative to the second optical functional structure.
5. Apparatus for presenting an image according to claim 2, wherein the third and fourth optical functional structures are duty-cycle graded one-dimensional gratings, wherein the duty cycle increases with increasing distance of the one-dimensional grating relative to the second optical functional structure.
6. An apparatus for presenting an image according to claim 1 wherein the first optical functional structure is spaced relative to the second optical functional structure in a first direction such that the light rays reach the second optical functional structure from the first optical functional structure within the optical waveguide lens in the first direction, and the third and fourth optical functional structures are located on either side of the second optical functional structure in a second direction different from the first direction such that the first and second diffracted light beams reach the third and fourth optical functional structures, respectively, within the optical waveguide lens in the second direction.
7. An apparatus for presenting images as claimed in claim 6, wherein the first direction is perpendicular to the second direction.
8. A device for presenting images as recited in claim 1 wherein the first, second, third and fourth optically functional structures are located on the same surface of the optical waveguide lens.
9. A system for implementing an augmented reality display, comprising:
an image source; and
at least one image rendering device, each said image rendering device comprising:
an optical waveguide lens; and
a first optical function structure, a second optical function structure, a third optical function structure and a fourth optical function structure which are arranged on the surface of the optical waveguide lens,
wherein the first and second optical functional structures are located in the middle of the optical waveguide lens, and the third and fourth optical functional structures are located on both sides of the surface of the optical waveguide lens,
wherein light from the image source is coupled into the optical waveguide lens through the first optical function structure, then reaches the second optical function structure through total reflection, and under the action of the second optical function structure, generates a first diffracted light beam and a second diffracted light beam, which respectively reach the third optical function structure and the fourth optical function structure through total reflection in the optical waveguide lens and exit from the third optical function structure and the fourth optical function structure,
wherein the third and fourth optical functional structures have structural parameters that gradually change in distance relative to the second optical functional structure.
10. The system for implementing an augmented reality display of claim 9, wherein the first, third and fourth optically functional structures are one-dimensional gratings and the second optically functional structure is a two-dimensional grating.
11. The system for enabling an augmented reality display of claim 10, wherein the one-dimensional grating is one of: tilted gratings, rectangular gratings, blazed gratings, and bulk gratings.
12. The system for enabling an augmented reality display of claim 10, wherein the third and fourth optical functional structures are one-dimensional gratings with graded grating heights, wherein the heights increase with increasing distance of the one-dimensional gratings relative to the second optical functional structure.
13. The system for enabling an augmented reality display of claim 10, wherein the third and fourth optical functional structures are duty cycle graded one-dimensional gratings, wherein the duty cycle increases with increasing distance of the one-dimensional grating relative to the second optical functional structure.
14. The system for implementing an augmented reality display of claim 9, wherein the first optical functional structure is spaced relative to the second optical functional structure in a first direction such that the light rays reach the second optical functional structure from the first optical functional structure within the optical waveguide lens in the first direction, and the third and fourth optical functional structures are located on either side of the second optical functional structure in a second direction different from the first direction such that the first and second diffracted light beams reach the third and fourth optical functional structures, respectively, within the optical waveguide lens in the second direction.
15. The apparatus for implementing an augmented reality display of claim 14, wherein the first direction is perpendicular to the second direction.
16. The apparatus for implementing an augmented reality display of claim 9, wherein the first, second, third and fourth optical functional structures are located on a same surface of the optical waveguide lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748865.9A CN112394510A (en) | 2019-08-14 | 2019-08-14 | Apparatus for presenting image and system for implementing augmented reality display |
| PCT/CN2020/108670 WO2021027841A1 (en) | 2019-08-14 | 2020-08-12 | Apparatus for displaying image, and system for implementing augmented reality display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748865.9A CN112394510A (en) | 2019-08-14 | 2019-08-14 | Apparatus for presenting image and system for implementing augmented reality display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112394510A true CN112394510A (en) | 2021-02-23 |
Family
ID=74570522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910748865.9A Pending CN112394510A (en) | 2019-08-14 | 2019-08-14 | Apparatus for presenting image and system for implementing augmented reality display |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112394510A (en) |
| WO (1) | WO2021027841A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040491A1 (en) * | 2021-09-16 | 2023-03-23 | Oppo广东移动通信有限公司 | Optical structure and optical device |
| CN117148499A (en) * | 2023-09-15 | 2023-12-01 | 慕德微纳(杭州)科技有限公司 | Design method of diffraction optical waveguide |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060291021A1 (en) * | 2005-06-17 | 2006-12-28 | Hiroshi Mukawa | Optical device, and virtual image display |
| CN106338832A (en) * | 2016-11-09 | 2017-01-18 | 苏州苏大维格光电科技股份有限公司 | Single holographic diffraction optical waveguide lens and 3D display device |
| CN106773057A (en) * | 2017-01-13 | 2017-05-31 | 苏州苏大维格光电科技股份有限公司 | A kind of monolithic hologram diffraction waveguide three-dimensional display apparatus |
| US20180231784A1 (en) * | 2017-02-14 | 2018-08-16 | Optecks, Llc | Optical display system for augmented reality and virtual reality |
| CN108873350A (en) * | 2018-07-24 | 2018-11-23 | 上海鲲游光电科技有限公司 | A kind of waveguide display device |
| CN109239920A (en) * | 2017-07-11 | 2019-01-18 | 苏州苏大维格光电科技股份有限公司 | A kind of holographical wave guide eyeglass and augmented reality display device |
| CN210401841U (en) * | 2019-08-14 | 2020-04-24 | 苏州苏大维格科技集团股份有限公司 | Apparatus for presenting image and system for implementing augmented reality display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW522256B (en) * | 2000-12-15 | 2003-03-01 | Samsung Electronics Co Ltd | Wearable display system |
| DE102008005817A1 (en) * | 2008-01-24 | 2009-07-30 | Carl Zeiss Ag | Optical display device |
| US10241332B2 (en) * | 2015-10-08 | 2019-03-26 | Microsoft Technology Licensing, Llc | Reducing stray light transmission in near eye display using resonant grating filter |
| CN108919493B (en) * | 2018-07-27 | 2021-01-22 | 京东方科技集团股份有限公司 | AR display device, control method thereof and wearable device |
| CN210136366U (en) * | 2019-07-01 | 2020-03-10 | 苏州苏大维格科技集团股份有限公司 | Apparatus for presenting image and system for implementing augmented reality display |
-
2019
- 2019-08-14 CN CN201910748865.9A patent/CN112394510A/en active Pending
-
2020
- 2020-08-12 WO PCT/CN2020/108670 patent/WO2021027841A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060291021A1 (en) * | 2005-06-17 | 2006-12-28 | Hiroshi Mukawa | Optical device, and virtual image display |
| CN106338832A (en) * | 2016-11-09 | 2017-01-18 | 苏州苏大维格光电科技股份有限公司 | Single holographic diffraction optical waveguide lens and 3D display device |
| CN106773057A (en) * | 2017-01-13 | 2017-05-31 | 苏州苏大维格光电科技股份有限公司 | A kind of monolithic hologram diffraction waveguide three-dimensional display apparatus |
| US20180231784A1 (en) * | 2017-02-14 | 2018-08-16 | Optecks, Llc | Optical display system for augmented reality and virtual reality |
| CN109239920A (en) * | 2017-07-11 | 2019-01-18 | 苏州苏大维格光电科技股份有限公司 | A kind of holographical wave guide eyeglass and augmented reality display device |
| CN108873350A (en) * | 2018-07-24 | 2018-11-23 | 上海鲲游光电科技有限公司 | A kind of waveguide display device |
| CN210401841U (en) * | 2019-08-14 | 2020-04-24 | 苏州苏大维格科技集团股份有限公司 | Apparatus for presenting image and system for implementing augmented reality display |
Non-Patent Citations (3)
| Title |
|---|
| 曾飞;张新;张建萍;史广维;曲贺盟;张继真;: "基于棱镜-光栅结构的全息波导头盔显示系统设计", 光学学报, no. 09, 10 September 2013 (2013-09-10) * |
| 胡进: "基于衍射光栅和空间光调制器的点阵全息光刻方法", 《中国激光》, vol. 41, no. 6, 30 June 2014 (2014-06-30), pages 1 - 4 * |
| 韩昕彦;余飞鸿;: "基于层叠阵列波导的穿透式视频眼镜设计", 光学学报, no. 05, 10 May 2015 (2015-05-10) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040491A1 (en) * | 2021-09-16 | 2023-03-23 | Oppo广东移动通信有限公司 | Optical structure and optical device |
| CN117148499A (en) * | 2023-09-15 | 2023-12-01 | 慕德微纳(杭州)科技有限公司 | Design method of diffraction optical waveguide |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021027841A1 (en) | 2021-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108139593B (en) | Imaging light guide with reflective steering array | |
| JP6171740B2 (en) | Optical device and image display apparatus | |
| CN210136366U (en) | Apparatus for presenting image and system for implementing augmented reality display | |
| JP6720315B2 (en) | Imaging light guide with reflective conversion array | |
| US11774765B2 (en) | Method and system for dual projector waveguide displays with wide field of view | |
| US11994684B2 (en) | Image light guide with zoned diffractive optic | |
| US20230417974A1 (en) | Image light guide with zoned diffractive optic | |
| CN114910991B (en) | Diffractive optical waveguide and display device | |
| CN111880304A (en) | Optical pupil expanding device, display device and method for outputting light beam and displaying image | |
| CN114935790B (en) | Diffractive optical waveguide and display device | |
| CN112394510A (en) | Apparatus for presenting image and system for implementing augmented reality display | |
| CN114051593A (en) | Near-eye display device, augmented reality glasses comprising same, and operation method thereof | |
| EP3945365A1 (en) | Waveguide-based projector | |
| CN210720885U (en) | Apparatus for augmented reality display and system for implementing augmented reality display | |
| CN210401841U (en) | Apparatus for presenting image and system for implementing augmented reality display | |
| CN210720886U (en) | Apparatus and system for augmented reality display | |
| EP4050401A1 (en) | Optical system and mixed reality device | |
| CN116964509A (en) | Optical device | |
| CN114675421A (en) | Augmented reality near-to-eye display device | |
| CN112180593A (en) | Apparatus for presenting image and system for implementing augmented reality display | |
| CN112817149A (en) | Apparatus for augmented reality display and system for implementing augmented reality display | |
| CN117761825A (en) | Optical waveguide device and AR display device | |
| CN116203668A (en) | Waveguide type display device | |
| CN112817150A (en) | Apparatus and system for augmented reality display | |
| WO2024006638A1 (en) | Multiplexing image light guide with split input and optical power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |