CN214311115U - Display device and display system for improving optical wave field angle - Google Patents
Display device and display system for improving optical wave field angle Download PDFInfo
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Abstract
The utility model discloses a display device and a display system for improving the angle of field of light wave, the display device comprises a waveguide substrate, the waveguide substrate is provided with a first surface and a second surface which are opposite; the first surface and/or the second surface is/are coated with an adhesive layer; the first diffractive optical input element and the second diffractive optical input element are arranged on the bonding layer, the first diffractive optical output element is matched with the first diffractive optical input element, and the second diffractive optical output element is matched with the second diffractive optical input element; the first diffractive optical input element and the second diffractive optical input element are positioned in a light wave input area of the waveguide substrate; the first diffractive optical input element is used for coupling the first light wave with the incidence angle theta 1 into the waveguide substrate, and the second diffractive optical input element is used for coupling the second light wave with the incidence angle theta 2 into the waveguide substrate. The visual field of more than 30 degrees can be realized, and the visual field angle can be effectively expanded to 45 degrees or more in practical use.
Description
Technical Field
The utility model relates to an Augmented Reality (AR) shows technical field, especially relates to an improve display device and display system of light wave angle of vision.
Background
Augmented Reality (AR) display technology can be widely applied to the fields of military, medical treatment, architecture, education, engineering, movie and television, entertainment and the like, and it is likely that smart phones are the same as the next-generation mainstream display means.
Common AR optical systems are mainly of the following types: firstly, prism type: according to the optical scheme used by Google Glass, a display screen image is collimated by a concave reflector, reflected by a semi-transparent semi-reflective film and finally projected to human eyes. The field of view of the scheme is generally below 20 degrees, and the volume is large; second, free-form surface reflection: the curved surface reflection type mainly utilizes the principle of mirror reflection for imaging, and in the design of a light propagation path, a Birdbath mode can be adopted, or optical schemes such as reflection (called off-axis reflection) by projecting the light onto a coated curved surface and the like can be adopted. A larger field of view can be realized, but the size is too large, and the glasses are not suitable for being worn for a long time;
thirdly, optical waveguides: the proposal is considered to be the closest proposal to the current myopia glasses, and mainly comprises three types of geometric optical waveguides, surface relief type optical waveguides and holographic optical waveguides. The geometrical optical waveguide has low production yield and expensive cost of a single optical module due to the complex process, and most patents are held in the LUMUS hands of Israel corporation; the etching process used by the surface relief type optical waveguide can adopt the mature manufacturing technology in the semiconductor industry, so that the yield is higher during mass production, and the cost is far lower than that of a geometrical optical waveguide scheme. The requirements of semiconductor process and design make the technical and capital barriers high;
the holographic optical waveguide can be exposed on a single-layer lens with a curved surface shape to form a holographic film, so that an AR product closest to the traditional glasses with the curved surface can be produced. And large-scale production equipment is not needed, the cost only depends on glass and the holographic film, and the cheapest optical waveguide scheme can be realized.
In summary, the most likely applications for consumer-grade AR optical solutions are surface-relief optical waveguides and holographic optical waveguides. The surface relief type optical waveguide needs heavy asset investment, and a general company is difficult to bear, so the holographic optical waveguide scheme is the scheme which is most likely to realize curve overtaking, but the scheme has the defects that the angle selectivity of the holographic grating causes the limitation of a field angle, the field angle is about 30 degrees, meanwhile, the chromaticity uniformity is poor, and the wavelength difference of a monochromatic 30 degree can reach about 50 nm.
Therefore, how to solve the technical problems of limited angle selection and chromaticity uniformity of the holographic grating in the field is an urgent need to solve
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, an object of the present invention is to provide a display device and a display system for improving the angle of field of light wave, so as to increase the uniformity of chromaticity in the whole field of view, and increase the competitiveness of the holographic waveguide optical scheme in the AR technology.
According to an aspect of the present invention, there is provided a display device for improving an angle of field of light waves, including a waveguide substrate;
a first diffractive optical input element, a second diffractive optical input element disposed at a lightwave input region of the waveguide substrate;
the first diffractive optical input element is used for coupling a first light wave with an incidence angle theta 1 into the waveguide substrate, the second diffractive optical input element is used for coupling a second light wave with an incidence angle theta 2 into the waveguide substrate, the value range of theta 1 is a and b, the value range of theta 2 is c and d, and the difference between a and d is more than 30 degrees; preferably a, d differ by more than 40 deg., most preferably a, d differ by more than 40 deg. -60 deg..
A first diffractive optical output element disposed on the waveguide substrate in the light wave output region for cooperation with the first diffractive optical input element, and a second diffractive optical output element for cooperation with the second diffractive optical input element.
Compared with the prior art, the utility model discloses following beneficial effect has: by adding the diffractive optical input elements capable of coupling light waves of two angles on two sides of the waveguide substrate and selecting the boundary of the angles of the two diffractive optical input elements, the difference between a and d is greater than 30 degrees, a visual field greater than 30 degrees can be realized, and the visual field angle can be effectively expanded to 45 degrees or more in practical use.
Further, the first light wave and the second light wave are emitted by the same light source;
the technical scheme has the advantages that the field angle of the same light source can be improved, the chromaticity uniformity can be increased, and the competitiveness of the scheme in the AR technology is increased.
Further, the wavelength difference between the first light wave and the second light wave is less than 50 nm.
The further technical scheme has the beneficial effects that the wavelength difference of the first light wave and the second light wave is reduced, and the smaller the wavelength difference is, the more uniform the color of the whole field of view is, namely the chroma uniformity is improved.
Further, the first light wave and the second light wave are both monochromatic light waves.
The light wave emitted by the light-emitting terminal can be decomposed into a plurality of monochromatic lights, and the light waves in the monochromatic lights, which meet the theta 1 or theta 2, can improve the field angle and the chromaticity uniformity.
Furthermore, the propagation angle of the first light wave in the waveguide substrate is alpha, and the propagation angle of the second light wave in the waveguide substrate is beta, sin-1n1/n2Tan of not more than alpha (or beta)-1l/2h, and the angle difference between alpha and beta is not less than a preset value; where n1 is an external medium refractive index (air is 1), n2 is a refractive index of the first diffractive optical input element or the second diffractive optical input element, θ is a light propagation angle in the waveguide substrate, l is a diameter of the first diffractive optical input element or the second diffractive optical input element, h is a thickness of the waveguide substrate, and the thickness of the waveguide substrate can be made 1mm or less.
The further technical scheme has the advantages that the relative positions of the first diffractive optical input element and the second diffractive optical input element during installation are not limited, and only the first light wave and the second light wave are required to be totally reflected in the waveguide substrate.
Furthermore, the light wave inclined to the left is opposite to the light wave inclined to the right in angle sign by taking the central axis of the incident light source as a reference, the sign of a is a negative value, and the sign of d is a positive value.
The further technical scheme has the advantages that the sign of the light wave inclining to the left is set to be negative and the sign of the light wave inclining to the right is set to be positive by taking the central axis of the incident light source as a reference, the preferable values of a and d are equal and opposite, and the angle of view of the light wave of the incident light source can be correspondingly expanded.
Further, at least one of the first diffractive optical input element, the second diffractive optical input element, the first diffractive optical output element, and the second diffractive optical output element is a holographic grating;
the holographic grating is made of photoresist, photopolymer, dichromated gelatin, photorefractive crystal, silver halide through holographic exposure or through nanoimprint technology.
The advantage of adopting the further technical scheme is that the competitiveness of the holographic waveguide optical scheme in the AR technology is increased. The difference between holographic exposure or the production of both by nanoimprint techniques is: the thickness of the recording medium is not changed, and the refractive index of the holographic grating is changed; the latter is that the recording medium thickness is changing but the refractive index of the holographic grating is not changing.
Further, the grating periods of the first diffractive optical input element and the first diffractive optical output element are the same; and/or the grating periods of the second diffractive optical input element and the second diffractive optical output element are the same.
The waveguide substrate can be diffracted out of the light source by coupling the light wave of the incident light source through the first diffractive optical input element and the first diffractive optical output element or the second diffractive optical input element and the second diffractive optical output element, preferably, the distances between the first diffractive optical input element and the waveguide substrate and the distances between the second diffractive optical input element and the waveguide substrate are the same, and the distances between the second diffractive optical output element and the waveguide substrate are the same.
Further, the waveguide substrate has two opposite surfaces;
the second diffractive optical input element is located on the same side surface or on an opposite surface of the waveguide substrate as the first diffractive optical input element.
The beneficial effect of adopting above-mentioned further technical scheme lies in, further reduces the restriction of relative position when first diffraction optical input element, second diffraction optical input element install.
Further, the first light wave is diffracted out of the waveguide base by the first diffractive optical output element to form a third light wave;
the second light wave is diffracted out of the waveguide base by the second diffractive optical output element to form a fourth light wave;
the third light wave and the fourth light wave are parallel or the third light wave and the fourth light wave are intersected at a preset position.
The technical scheme has the advantages that when the light waves of the same light source can be diffracted by the first diffractive optical input element and the second diffractive optical input element at the same time, the third light waves and the fourth light waves are parallel, and when the light waves of the same light source at different angles are diffracted by the first diffractive optical input element and the second diffractive optical input element respectively, the third light waves and the fourth light waves are intersected at the preset position, so that the color chromaticity is uniform in the whole view field.
According to another aspect of the present invention, there is provided a display device system comprising the display device of any one of the above.
Compared with the prior art, the utility model discloses following beneficial effect has: the intersection positions of the third light wave and the fourth light wave at the preset positions are set as human eyes, the human eyes 080 can see the images optimized by the display device, the field of view larger than 30 degrees can be realized, and the field of view can be effectively expanded to 45 degrees or larger in practical use.
And a relay system is arranged between the light source and the light wave input area of the waveguide substrate, and the relay system is used for collimating the light waves emitted by the light source.
The further technical scheme has the advantages that the first diffractive optical input element and the second diffractive optical input element are favorable for coupling light waves, and the field of view larger than 30 degrees is realized.
According to another aspect of the present invention, there is provided a display device method, comprising the steps of:
receiving an incident light wave;
the first light wave with the incidence angle theta 1 is coupled into the waveguide substrate through the first diffractive optical input element, and the second light wave with the incidence angle theta 2 is coupled into the waveguide substrate through the second diffractive optical input element; the value range of theta 1 is that a is not less than theta 1 and not more than b, the value range of theta 2 is that c is not less than theta 2 and not more than d, and the difference between a and d is more than 30 degrees;
the first light wave and the second light wave are transmitted in the waveguide substrate at an angle larger than total reflection;
the first light wave is diffracted out of the waveguide substrate by the first diffractive optical output element, and the second light wave is diffracted out of the waveguide substrate by the second diffractive optical output element.
Compared with the prior art, the utility model discloses following beneficial effect has: the incident light wave is divided into the first light wave and the second light wave, the angle of the two light waves is selected to be in a boundary, the difference between a and d is greater than 30 degrees, a visual field greater than 30 degrees can be realized, and the visual field can be effectively expanded to 45 degrees or more in practical use.
Drawings
FIG. 1 is a schematic diagram of a waveguide substrate;
FIG. 2 is a schematic structural diagram of a display device;
FIG. 3 is a graph showing the spectral response of different cones;
FIG. 4 is a schematic diagram of a display system;
FIG. 5 is a first schematic diagram illustrating the operation of the system;
FIG. 6 is a second schematic diagram illustrating the operation of the system;
FIG. 7 is a schematic view of the angle of view of a grating with a central angle of 0 degrees for the collected light wave angles;
fig. 8 is a schematic view of the display system to expand the field angle.
In the figure: 001-incident light source;
011-second light wave; 012-fourth lightwave; 021-first lightwave; 022 — third light wave;
003-relay system;
031-a first diffractive optical input element; 032 — a second diffractive optical input element;
071-a second diffractive optical input element; 072 — second diffractive optical output element;
040. 060-adhesive layer;
050. a waveguide substrate; 051. a first surface; 052. a second surface;
080 human eye.
Detailed Description
In order to better understand the technical solution of the present invention, the present invention is further described below with reference to the drawings and the specific embodiments.
Example 1:
the display device comprises a waveguide substrate 050, wherein the waveguide substrate 050 is provided with a first surface 051 and a second surface 052 which are opposite;
the first surface 051 and/or the second surface 052 are/is coated with adhesive layers 040 and 060, and the adhesive layers are holographic films;
a first diffractive optical input element 031, a second diffractive optical input element 071 arranged on the bonding layer, a first diffractive optical output element 032 matched with the first diffractive optical input element, and a second diffractive optical output element 072 matched with the second diffractive optical input element 071; at least one of the first diffractive optical input element 031, the second diffractive optical input element 071, the first diffractive optical output element 032 and the second diffractive optical output element 072 is a holographic grating, and in this embodiment, all the holographic gratings are selected, and preferably, the first diffractive optical input element 031 and the first diffractive optical output element 032 are a group of gratings, and the grating periods are the same, and are in one layer of holographic film 040; second diffractive optical input element 071 and second diffractive optical output element 072 are a set of gratings with the same grating period in a layer of holographic film 060; the holographic grating is made of photoresist, photopolymer, dichromated gelatin, photorefractive crystal, silver halide through holographic exposure or through nanoimprint technology. The grating periods of the first diffractive optical input element and the first diffractive optical output element are the same; the grating periods of the second diffractive optical input element and the second diffractive optical output element are the same. The grating periods are the same, and the same grating period refers to the same distance between grating stripes for a holographic grating, for example, a 1000-line grating refers to 1000 grating stripes in 1mm, and the distance between grating stripes can represent the grating period. As shown in fig. 5 and 6, the waveguide substrate has two opposite surfaces, namely a first surface 051 and a second surface 052; the second diffractive optical input element 031 is located on the same surface or an opposite surface of the waveguide substrate as the first diffractive optical input element 071.
The first diffractive optical input element 031 and the second diffractive optical input element 071 are positioned in the light wave input region of the waveguide substrate; the first diffractive optical input element 031 is used for coupling a first light wave 021 with an incidence angle theta 1 into the waveguide substrate 050, the second diffractive optical input element 071 is used for coupling a second light wave 011 with an incidence angle theta 2 into the waveguide substrate 050, the value range of theta 1 is a and b, the value range of theta 2 is c and d, and the difference between a and d is greater than 30 degrees; in this embodiment, the first light wave 021 and the second light wave 011 are monochromatic light waves emitted by the same light source, for example, light emitted by a pixel on the left of an incident light source is θ 1 when passing through a lens (relay system), and light emitted by a pixel on the right of the incident light source is θ 2 when passing through the lens; the wavelength difference between the first light wave and the second light wave is less than 50nm, such as 40nm, 35nm, 30nm, 25nm, 20nm, 18nm, 16nm, 15nm, and 12 nm; specifically, the principle of reducing the wavelength difference is that fig. 7 can be regarded as the field angle of the grating with the central angle of 0 degree of the collected light wave angle, the range of the angle of the coupled light is-15 °, as can be seen from fig. 7, the wavelength corresponding to the-15 ° field is about 510nm, and the wavelength corresponding to the +15 ° field is about 550 nm. As shown in fig. 8, assuming that the central angles of the two holographic gratings of the first diffractive optical input element 031 and the second diffractive optical input element 071 are +5 ° and-5 °, the respective ranges of the angles of the light rays coupled in are-10 ° -20 ° and-20 ° -10 °, the range of the superimposed field of view is about 40 °, and a field of view larger than 30 ° can be realized. The wavelength corresponding to 15 ° is shifted from about 510nm to 523nm, the wavelength corresponding to 15 ° is shifted from about 550nm to 540nm, the total wavelength difference is about 17nm, and the total wavelength difference is remarkably improved compared with 50nm in fig. 7 (the larger the wavelength difference is, the color nonuniformity in the whole field of view is realized, namely, the chromaticity uniformity is poor).
The first diffractive optical output element 032 and the second diffractive optical output element 072 are located in the light wave output region of the waveguide substrate 050, and are configured to diffract the light wave coupled into the first diffractive optical input element 031 and the second diffractive optical input element 071 out of the waveguide substrate 050, specifically, the first light wave 021 is diffracted out of the waveguide substrate by the first diffractive optical output element to form a third light wave 022; the second light wave 011 is diffracted out of the waveguide substrate by the second diffractive optical output element 072 to form a fourth light wave 012; the third light wave 022 and the fourth light wave 012 are parallel to each other or the third light wave 022 and the fourth light wave 012 intersect at a preset position, so that the uniformity of colors in the whole field of view can be realized. As shown in fig. 3, the reason for the increased chromaticity uniformity is that three types of cones (S, M, L) among the photoreceptors on the retina are different for different wavelengths of stimulation, and fig. 3 shows the spectral response curves of the different cones. The three curves correspond to three cone cells. Corresponding to short (S), medium (M) and long (L) wavelengths, respectively. Assuming that the dominant wavelength of the incident light source is 525nm, when the angle of view is about +15 ° or-15 ° (large angle of view), the wavelength corresponding to the light output from the grating is 500nm or 550nm, and the waveguide output effect is that the left side is blue and the right side is yellow, and in order to make the wavelength of the yellow region green, the dominant wavelength 540nm (which may be set according to actual requirements or 530nm) is provided in the region of large angle of view, and the light of 550nm is pulled to be in the vicinity of 540nm, so that the color uniformity in the entire field of view can be realized.
As shown in fig. 4, this embodiment provides a display device system applying the above display device, which includes an incident light source 001, a relay system 003 is disposed between the incident light source 001 and the light wave input region of the waveguide substrate 050, and the relay system 003 is used for collimating the light wave emitted from the light source.
The incident light source 001 selects a display chip, and the display chip can be an OLED chip, a micro LED chip or an SLM chip; the relay system 003 may be a convex lens. The system consists of the following parts: the display device comprises a display chip 001, a relay system 003 and a display device (holographic waveguide), is mainly applied to augmented reality intelligent glasses, and further comprises a carrier (such as glasses) for mounting the display system;
devices for supporting operation of the display system include, but are not limited to, driver boards, batteries, camera lenses, depth lenses, infrared lenses, touch pads, microphones.
In the present embodiment, a display method of a display device for improving the viewing angle of light waves is provided, as follows:
step 1: receiving an incident light wave;
step 2: the first light wave with the incidence angle theta 1 is coupled into the waveguide substrate through the first diffractive optical input element, and the second light wave with the incidence angle theta 2 is coupled into the waveguide substrate through the second diffractive optical input element; the value range of theta 1 is that a is not less than theta 1 and not more than b, the value range of theta 2 is that c is not less than theta 2 and not more than d, and the difference between a and d is more than 30 degrees; preferably, the first light wave and the second light wave are monochromatic light waves emitted by the same light source, and the wavelength difference is less than 50 nm. Wherein the first light wave propagates in the waveguide substrate at an angle α, and the second light wave propagates in the waveguide substrate at an angle β, sin-1n1/n2Tan of not more than alpha (or beta)-1l/2h, and the angle difference between alpha and beta is not less than a preset value; where n1 is the refractive index of the external medium (air is 1), n2 is the refractive index of the first diffractive optical input element or the second diffractive optical input element, θ is the propagation angle of light in the waveguide substrate, and l is the first diffractive optical input element or the second diffractive optical input elementThe diameter of the second diffractive optical input element, h, is the thickness of the waveguide substrate.
And step 3: the first light wave and the second light wave are transmitted in the waveguide substrate at an angle larger than total reflection;
and 4, step 4: the first light wave is diffracted out of the waveguide substrate by the first diffractive optical output element, and the second light wave is diffracted out of the waveguide substrate by the second diffractive optical output element.
And 5: the first light wave is diffracted out of the waveguide substrate through the first diffractive optical output element to form a third light wave; the second light wave is diffracted out of the waveguide substrate by a second diffractive optical output element to form a fourth light wave; the third light wave and the fourth light wave are parallel or the third light wave and the fourth light wave are intersected at a preset position (such as human eyes).
For example, as shown in fig. 5 and 6, the light waves inclined to the left have opposite angle signs to the light waves inclined to the right with respect to the central axis of the incident light source 001, the sign of the left-inclined light wave is negative, and the sign of the right-inclined light wave is positive, in this embodiment, the first light wave 021 is a left part light ray, and the second light wave 011 is a right part light ray, where θ 1 is greater than or equal to-25 ° and less than or equal to 0, and θ 2 is greater than or equal to 0 and less than or equal to 25 °; the display chip (or display) 001 emits light, the display chip is placed on the focal plane of the lens (relay system) 003, the light emitted by the pixels on the display chip 001 is parallel light passing through the lens, and the direction of the parallel light is parallel to the connecting line of the pixel and the central point of the lens.
After being collimated by the relay system 003, the left part of the light 021 irradiates the volume holographic grating 071, and the diffracted light is transmitted in the waveguide 050 at an angle larger than the total reflection angle and is diffracted to exit the waveguide when reaching the volume holographic grating 072 to form light 022; the right part of light 011 of the display chip 001 is collimated by the relay system 003 and then irradiates on the volume holographic grating 031, and diffracted light is transmitted in the waveguide 050 at an angle larger than total reflection, and is diffracted to exit the waveguide when reaching the volume holographic grating 032, so that light 012 is formed; the volume holographic grating 031 and the volume holographic grating 032 are a group of gratings with the same grating period and are arranged in a layer of holographic film 040; the volume holographic grating 071 and the volume holographic grating 072 are a group of gratings, the grating periods are the same, and are in a layer of holographic film 060; film 040 and film 060 are attached to both sides or the same side of waveguide substrate 050.
In the area where the light 022 and the light 012 meet, the human eye 080 can see the optimized image.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A display device for improving the field angle of light waves is characterized by comprising a waveguide substrate;
a first diffractive optical input element, a second diffractive optical input element disposed at a lightwave input region of the waveguide substrate;
the first diffractive optical input element is used for coupling a first light wave with an incidence angle theta 1 into the waveguide substrate, the second diffractive optical input element is used for coupling a second light wave with an incidence angle theta 2 into the waveguide substrate, the value range of theta 1 is a and b, the value range of theta 2 is c and d, and the difference between a and d is more than 30 degrees;
a first diffractive optical output element disposed on the waveguide substrate in the light wave output region for cooperation with the first diffractive optical input element, and a second diffractive optical output element for cooperation with the second diffractive optical input element.
2. The device for improving the field angle of light waves according to claim 1, wherein the first light wave and the second light wave are emitted by the same light source;
and/or
The wavelength difference between the first light wave and the second light wave is less than 50 nm;
and/or
The first light wave and the second light wave are both monochromatic light waves.
3. The device according to claim 1, wherein the first light wave propagates in the waveguide substrate at an angle α, and the second light wave propagates in the waveguide substrate at an angle β, sin-1n1/n2Tan of not more than alpha (or beta)-1l/2h, and the angle difference between alpha and beta is not less than a preset value; where n1 is an external medium refractive index, n2 is a refractive index of the first diffractive optical input element or the second diffractive optical input element, θ is a light propagation angle in the waveguide substrate, l is a diameter of the first diffractive optical input element or the second diffractive optical input element, and h is a thickness of the waveguide substrate.
4. The display device according to claim 1, wherein the sign of the light wave inclined to the left is opposite to the sign of the light wave inclined to the right with respect to the central axis of the incident light source, the sign of a is a negative value, and the sign of d is a positive value.
5. The light wave field angle improving display device according to claim 1, wherein at least one of the first diffractive optical input element, the second diffractive optical input element, the first diffractive optical output element, and the second diffractive optical output element is a holographic grating;
the holographic grating is made of photoresist, photopolymer, dichromated gelatin, photorefractive crystal, silver halide through holographic exposure or through nanoimprint technology.
6. The display device for improving the angle of field of light waves according to claim 1, wherein the grating periods of the first diffractive optical input element and the first diffractive optical output element are the same;
and/or
The grating periods of the second diffractive optical input element and the second diffractive optical output element are the same.
7. The device for improving the field angle of light waves according to claim 1, wherein the waveguide substrate has two opposite surfaces;
the second diffractive optical input element is located on the same surface or an opposite surface of the waveguide substrate as the first diffractive optical input element.
8. The display device for improving the field angle of light waves according to claim 1, wherein the first light waves are diffracted out of the waveguide substrate by the first diffractive optical output element to form third light waves;
the second light wave is diffracted out of the waveguide substrate by a second diffractive optical output element to form a fourth light wave;
the third light wave and the fourth light wave are parallel or the third light wave and the fourth light wave are intersected at a preset position.
9. A display system comprising the display device for improving the viewing angle of light waves of any one of claims 1 to 8, further comprising an incident light source, wherein a relay system is provided between the incident light source and the light wave input region of the waveguide substrate, and the relay system is used for collimating the light waves emitted by the light source.
10. The display system of claim 9, further comprising a carrier for mounting the display system;
devices for supporting operation of the display system include, but are not limited to, driver boards, batteries, camera lenses, depth lenses, infrared lenses, touch pads, microphones.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165803A (en) * | 2023-04-20 | 2023-05-26 | 杭州光粒科技有限公司 | Waveguide display system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165803A (en) * | 2023-04-20 | 2023-05-26 | 杭州光粒科技有限公司 | Waveguide display system |
| CN116165803B (en) * | 2023-04-20 | 2024-03-12 | 杭州光粒科技有限公司 | Waveguide display system |
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