CN208818950U - Big field angle three-dimensional display apparatus - Google Patents
Big field angle three-dimensional display apparatus Download PDFInfo
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- CN208818950U CN208818950U CN201820789292.5U CN201820789292U CN208818950U CN 208818950 U CN208818950 U CN 208818950U CN 201820789292 U CN201820789292 U CN 201820789292U CN 208818950 U CN208818950 U CN 208818950U
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Abstract
The utility model relates to display technologies, in particular to the device for realizing the big field angle Three-dimensional Display of naked eye three-dimensional image.Include according to the big field angle three-dimensional display apparatus of the utility model one aspect: backlight is configured to the light beam that light source issues being converted to the first collimated light beam；Spatial light modulator on first collimated light beam direction of propagation is configured to that multi-angle of view mixed image information is loaded on first collimated light beam to form the second collimated light beam by amplitude modulation mode；And the phase board on second collimated light beam direction of propagation, with diffraction structure, the diffraction structure is configured to the image at each visual angle in the carried image of the second collimated light beam being projected to corresponding one group of observation position.
Description
Technical field
The utility model relates to display technologies, in particular to three-dimensional for realizing the big field angle of naked eye three-dimensional (3D) image
Display device.
Background technique
With the improvement of living standards, the fast development of science and technology, visual experience true to nature become people to display
The pursuit of picture, 3D display technology are come into being.Not only in traditional display industry, MultiMedia Field and software development etc.
Also there is an urgent need to the development of 3D display technology and applications for numerous areas.Traditional 3D display technology needs are set by additional auxiliary
Standby (such as 3D glasses etc.) are just it is observed that stereo-picture, this strongly limits the freedom degrees of people's viewing.Therefore develop naked eye
3D display technology is trend of the times.
Hologram is a kind of carrying amplitude and phase information with the image of true reappearance three-dimensional information.The characteristics of holography display
It is that hologram can be passed to space all directions in the every bit on the virtual image of spatial reproduction three-dimensional or three-dimensional real image, hologram
The image of whole picture can be seen in defeated information, each point of observation in space.In other words, image information is focused at by light field transmission
On point of observation.Therefore, in space, difference point of observation can watch the entire image of different perspectives and not interfere with each other mutually.But it is tens of
Nian Lai is limited by hologram recording material, information content and technical matters, and holography display is not able to achieve the dynamic color of wide viewing angle
Naked eye 3D display.
Naked eye 3D display technology based on principle of parallax includes method visually impaired and microtrabeculae lens method.In these techniques, visually impaired
Screen or micro-cylindrical lens array are arranged on LCD display plate surface to realize the image of different perspectives on space angle
Separation.Since ghost and stray light are difficult to eliminate, easily cause visual fatigue when observing this 3D rendering.At the same time,
It is influenced by stray light, usually visual angle interval is arranged larger, it is discontinuous so as to cause visual angle, it cannot achieve the naked of no jump
Eye 3D display effect.In addition, existing naked eye 3D display equipment volume is larger, it is difficult to be integrated into the midget plants such as mobile phone.
Utility model content
One purpose of the utility model is to provide a kind of wide view-field three-D display dress for realizing naked eye three-dimensional image
It sets, has many advantages, such as that manufacturing cost is low, design is easy and compact-sized.
Include according to the big field angle three-dimensional display apparatus of the utility model one aspect:
Backlight is configured to the light beam that light source issues being converted to the first collimated light beam；
Spatial light modulator on first collimated light beam direction of propagation, is configured to through amplitude modulation mode
Multi-angle of view mixed image information is loaded on first collimated light beam to form the second collimated light beam；And
Phase board on second collimated light beam direction of propagation, with diffraction structure, the diffraction structure is matched
It is set to and the image at each visual angle in the carried image of the second collimated light beam is projected to corresponding one group of observation position
It sets.
Preferably, in above-mentioned apparatus, the spatial light modulator includes the first volumetric pixel, and every individual pixel includes multiple
Sub-pix, each sub-pix correspond to different visual angles, and the diffraction structure includes multiple microstructure units, each micro-structure list
Member is configured to will be from the light beam for the sub-pix for corresponding to the same visual angle in multiple volumetric pixels of the spatial light modulator
It is projected to one group of observation position associated with the sub-pix.
Preferably, in above-mentioned apparatus, the diffraction structure is realized using one of the following structure: 1-dimention nano light
Grid, two-dimensional nano grating, the nanometer grating of spatial reuse, nanometer grating array and diffraction optical element.
Preferably, in above-mentioned apparatus, the diffraction structure is realized using diffraction optical element, by adjusting the diffraction
The constructional depth of optical element keeps diffraction efficiency of the diffraction light at diffraction time zero level minimum.
Preferably, in above-mentioned apparatus, the backlight includes:
Light guide plate, it includes the first micro-structure for being located at light guide plate upper surface, lower surface or inside, first micro-structure tools
There is the first unit of periodic distribution, the light beam that the light source issues is through first microstructures scatters to the outside of light guide plate；
And
The optical film being stacked with the light guide plate, it includes the second micro-structures for being located at optics film surface, this
Two micro-structures have a second unit of periodic distribution, and the light beam of the outside through first microstructures scatters to light guide plate is through the
Two microstructure manipulations are first collimated light beam.
Preferably, in above-mentioned apparatus, the first unit is in microprism, lenticule, free-form surface lens or pit
One kind.
Preferably, in above-mentioned apparatus, the second unit is one in lenticule, Fresnel lens or thin film lens
Kind.
Preferably, in above-mentioned apparatus, the backlight further comprises barn door, it includes with first micro-structure
Corresponding light-shielding structure is matched with the second micro-structure to filter out the stray light being emitted from second micro-structure.
Preferably, in above-mentioned apparatus, the barn door is set to one in lower column position: light guide plate and optical film it
Between, inside the light guide plate and inside the optical film.
Preferably, in above-mentioned apparatus, the light source is integrated the side in said device and being located at the backlight
Portion.
Preferably, in above-mentioned apparatus, the light source is LED line array light source.
Preferably, in above-mentioned apparatus, the spatial light modulator is liquid crystal display.
It preferably, further comprise the shading between the spatial light modulator and phase board in above-mentioned apparatus
Plate.
Preferably, in above-mentioned apparatus, the light source is white light source or three primary colors light source, described device further comprise
The colored filter being stacked with the spatial light modulator and phase board.
Preferably, in above-mentioned apparatus, the colored filter is set between the spatial light modulator and phase board.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the wide view-field three-D display device of the utility model one embodiment.
Fig. 2 is the schematic diagram that can be applied to the backlight of Fig. 1 shown device.
Fig. 3 is the schematic diagram for the backlight that another kind can be applied to Fig. 1 shown device.
Fig. 4 a-4d is the schematic diagram of the single microstructure unit for the phase board that can be applied in embodiment illustrated in fig. 1.
Fig. 5 a-5c is phase board sub-pix viewpoint (array) effect constituted using microstructure unit shown in Fig. 4 a-4d
Schematic diagram.
Fig. 6 is to show a kind of schematic diagram of multi-view image display structure for expanding field angle.
Fig. 7 is the schematic diagram for showing another multi-view image for expanding field angle and showing structure.
Specific embodiment
The purpose of this utility model is described in detail below in conjunction with attached drawing.
Fig. 1 is the schematic diagram according to the wide view-field three-D display device of the utility model one embodiment.
Device 10 shown in FIG. 1 includes backlight 110, spatial light modulator 120 and phase board 130.Backlight 110 is for example
Directive property backlight can be used.Optionally but not necessarily, light source 140 can be used as the composition list of Fig. 1 shown device
Member.Preferably, light source 140 can be LED line array light source.
Referring to Fig. 1, the light beam that light source 140 issues is converted to the collimated light beam along one or more directions through backlight 110
B1 (also known as the first collimated light beam B1 below).Spatial light modulator 120 is arranged on the direction of propagation of the first collimated light beam B1,
Multi-angle of view mixed image information is loaded on the first collimated light beam B1 to form collimated light beam B2 by it by amplitude modulation mode
(also known as the second collimated light beam B2 below).Phase board 130 is arranged on the direction of propagation of the second collimated light beam B2, utilizes micro-
The image at each visual angle in the second carried image of collimated light beam B2 is projected to by structural unit (such as nano structured unit)
Corresponding multiple observation positions make it possible to realize the effect of naked eye 3D display under big visual field.
It should be pointed out that in the present specification, collimated light beam, the directional light, direction beam propagated in one direction
Emergent ray of the angle of divergence halfwidth within 30 ° is referred to converging beam.Preferably, the angle of divergence halfwidth of emergent ray
Within the scope of 10 °.
Fig. 2 is the schematic diagram according to the backlight that can be applied to Fig. 1 shown device of the utility model another embodiment.
Directive property backlight 110 shown in Fig. 2 includes light guide plate 111 and optical film 112.Optical film 112 for example can be
Micronano optical film.As shown in Fig. 2, being formed in the upper surface of light guide plate 111 has the first unit of periodic distribution (with recessed in figure
Hole show) the first micro-structure 111A.Light source 140 is located at the side of light guide plate 111, and the light beam issued enters light guide plate 111
Later, the outside of light guide plate 111 is scattered to through the first micro-structure 111A.
Although the first micro-structure 111A shown in Fig. 2 is formed in the upper surface of light guide plate 111, it, which is also formed in, is led
The lower surface or inside of tabula rasa 111.Preferably, the size of the first micro-structure is between 100nm-1mm.Direction shown in Fig. 2
Property backlight 110 in, first unit is illustratively shown in the form of pits, but its be also possible to other forms optics member
Part, for example including but be not limited to microprism, lenticule, free-form surface lens etc..
With continued reference to Fig. 2, optical film 112 is located at the lower section of light guide plate 111.Optical film 112 can be stacked on light guide plate 111
Keep certain the air gap (when the refractive index of optical film is close to or higher than the refractive index of light guide plate together or with light guide plate 111
When).Further, it is also possible to one layer of low-index layer is inserted between light guide plate 111 and optical film 112 to avoid the shape in light guide plate
At total reflection condition.As shown in Fig. 2, form the second unit with periodic distribution on the surface of optical film 112 second is micro-
Structure 112A, the second micro-structure 112A are matched in structure with the first micro-structure 111A, and effect will be from light guide plate 111
Divergent beams are transformed to the first collimated light beam B1 being emitted along one or more directions.Preferably, the second micro-nano structure 112A is adopted
With configurations such as microlens array, array of Fresnel lenses, thin film lens array, diadactic structure optical arrays.Microlens array, Fei Nie
The lens unit of ear lens array or thin film lens array can be set according to optimization is made with the relative position of the micro-structure in light guide plate
Meter is to obtain preferable collimation or convergence effect.Such as the diameter of each unit or lenticule in optical film 112 can be set
It is calculated as bigger than the unit of light guide plate 111 or the size of bowl configurations.
In the present embodiment, plastics or glass can be chosen as light guide plate or the material of lenticule, refractive index is in 1-
Between 2.5.Plastics preferably can be used so that product is lighter and reduce cost.In addition, the light guide plate 111 can be by a kind of material
It constitutes or is made of the different multiple material of refractive index.Light guide plate and optical film are for example using grayscale lithography technique, laser incising
The production such as etching technique, and batch duplicating is realized using nano-imprint process.
Preferably, barn door can be set in backlight 110 to filter out undesirable stray light.Such as it is shown in Fig. 3
Backlight in, it may be considered that between light guide plate and optical film be arranged barn door 113.The barn door include and the first micro-structure
111A and the second micro-structure 112A matches corresponding barn door, so as to filter out the stray light being emitted from the second micro-structure.Shading
Plate can be single-layer or multi-layer absolute construction, and can be with light guide plate, optical film, spatial light modulator and Fresnel lens group
Any one or multiple optical devices for being integrated to form function and service.
In the embodiment shown in fig. 1, spatial light modulator 120 is used for amplitude modulation, the i.e. figure of load multi-angle of view mixing
As information.Spatial light modulator for example may include display panel, driving circuit, control system and software control etc..According to specific
Application field needs, and monochromatic or colored display may be implemented in spatial light modulator.Preferably, spatial light modulator 120 can be
Liquid crystal display.Spatial light modulator 120 may include multiple volumetric pixels or amplitude modulation pixel, and every individual pixel includes multiple
Sub-pix, and each sub-pix corresponds to different visual angles.
In the prior art, the image of each sub-pix from spatial light modulator projects corresponding list by phase board
A visual angle or observation position, but will be appreciated that from following description, and in the present invention, phase board is by spatial light modulator
The image of each sub-pix project corresponding one group of visual angle or one group of observation position, to widen field angle.
In order to obtain one group of observation position, in the present embodiment, phase board 130 has diffraction structure, the diffraction structure packet
Containing multiple volumetric pixels.Further, every individual pixel of phase board 130 includes multiple microstructure units, each microstructure unit
It is aligned with the multi-view image pixel matching of spatial light modulator, that is to say, that will be from multiple bodies of spatial light modulator 120
The light beam of sub-pix in pixel corresponding to the same visual angle is projected to one group of observation position associated with the sub-pix.It is preferred that
Ground, diffraction structure can be used various structures and realize, for example including but be not limited to 1-dimention nano grating, two-dimensional nano grating, space
Nanometer grating, nanometer grating array and diffraction optical element (or secondary optics element) of multiplexing etc..
Fig. 4 a-4d is the schematic diagram of the single microstructure unit for the phase board that can be applied in embodiment illustrated in fig. 1.
By taking Fig. 4 a as an example, which uses pixel unit form, and being divided into 9 has different cycles
And/or the grating region 1a-1i of the angle of orientation, it is different when the light of a sub-pix from spatial light modulator 120 reaches
Grating region light deflection will be made to different observation positions, it is thus achieved that the light beam at the same visual angle is to multiple observation positions
The projection set, to expand field range.
The period of grating region and the angle of orientation can be determined according to following grating equation:
tanφ1=sin φ/(cos φ-nsin θ (Λ/λ)) (1)
sin2(θ1)=(λ/Λ)2+(nsinθ)2-2nsinθcosφ(λ/Λ) (2)
Wherein, θ1And φ1Respectively indicate the angle of diffraction (angle of diffracted ray and z-axis negative direction) and the azimuth of diffraction light
(angle of diffracted ray and positive direction of the y-axis), θ and λ respectively indicate the incidence angle (folder of incident ray and z-axis negative direction of light source
Angle) and wavelength, Λ and φ respectively indicate period and the angle of orientation (groove profile direction and positive direction of the x-axis angle) of nanometer diffraction grating, n
Indicate the refractive index of light wave in the medium.
Therefore, after incident ray wavelength, incidence angle, the diffracted ray angle of diffraction and diffraction azimuth determine, Ji Keli
Required screen periods and the angle of orientation are calculated with above formula.
For another example, microstructure unit 131 shown in Fig. 4 b has different weeks by 9 using the form of grating spatial reuse
The grating of phase and/or the angle of orientation stacks, when the light of a sub-pix from spatial light modulator 120 reaches, no
With grating equally make light deflection to different observation positions, it is thus achieved that the light beam at the same visual angle is to multiple observation positions
The projection set, to expand field range.
Microstructure unit shown in Fig. 4 c and 4d is respectively two step diffraction optical elements and multi-step diffraction optical element,
It can equally make the light deflection from a visual angle to different observation positions.
Fig. 5 a-5c is phase board sub-pix viewpoint (array) effect constituted using microstructure unit shown in Fig. 4 a-4d
Schematic diagram.The light for being incident on single microstructure unit forms multiple visible areas by wavefront transform, these visible areas can
To be strip as shown in Figure 5 a, ring-type as shown in Figure 5 b or crosswise as shown in Figure 5 c.Obviously, this expands transverse direction
And/or longitudinal visual range, make observer that the information image at same visual angle can be observed when moving up and down.
Fig. 6 is to show a kind of schematic diagram of multi-view image display structure for expanding field angle.
Without loss of generality, it is illustrated by taking the display device at 4 visual angles as an example in Fig. 6.In Fig. 6, phase board
Each dash area on 130 indicates an individual pixel and includes 4 microstructure units (such as with shape shown in Fig. 4 a-4d
The microstructure unit of formula).It is managed by the angle of orientation of the grating in control microstructure unit and/or period or according to Diffraction of light wave
By come the structure that designs diffraction optical element, upper multiple visible areas can be formed horizontal and vertical as shown in Figure 6.Phase board
Each dash area on 130 is aligned with the matching of the volumetric pixel of spatial light modulator 120, thus can be in multiple horizontal and longitudinal row
Multiple information images at same visual angle are presented in the visible area of cloth, to refresh display needed for spatial light modulator not increasing
In the case where information, achieve the effect that expand field angle.
Fig. 7 is the schematic diagram for showing another multi-view image for expanding field angle and showing structure.
Similarly, Fig. 7 is also illustrated by taking the display device at 4 visual angles as an example.In Fig. 7, each of on phase board 130
Dash area corresponds to an individual pixel of spatial light modulator 120 and includes 4 microstructure units (such as with Fig. 4 a-
The microstructure unit of form shown in 4d).The angle of orientation and/or period by the grating in control microstructure unit, or according to
Diffraction of light wave theory designs the structure of diffraction optical element, can transversely form multiple visual (items being distributed at regular intervals
Shape) region.Each dash area on phase board 130 indicates an individual pixel and the volumetric pixel with spatial light modulator 120
Matching alignment, thus can be presented multiple information images at same visual angle in visual (strip) region arranged at regular intervals.
Meanwhile the microstructure unit of different sub-pixes corresponding to the information image of different perspectives is sequentially distributed in the horizontal direction, altogether
With visible dots (line) the array area domain 1-4 for forming loop distribution, thus not increasing refreshing display information needed for spatial light modulator
In the case where, achieve the effect that expand field angle.
The diffraction efficiency of diffraction optical element or binary optical elements can be determined by following formula:
Wherein, N is the numbers of steps of binary optical elements, and m is diffraction time.
In common diffraction grating, zero-order diffraction light occupies most energy, and useful+1 or -1 grade of diffraction
Energy proportion shared by light is limited, this significantly impacts the quality and effect of display.In this embodiment, it is preferred that by adjusting
The constructional depth of diffraction optical element on phase board can make diffraction efficiency of the diffraction light at the diffraction time of m=0 minimum
(such as equal to 0), that is to say, that zero-order diffraction light is completely eliminated, so that energy be made to be concentrated mainly on+1 or -1 grade of diffraction light
On, the efficiency of light energy utilization is greatly improved in this.
In practical applications, phase board is located at the front or behind of spatial light modulator, or in spatial light modulator
Wherein one side on directly prepare phase board structure, to obtain integrated display device.
It should be pointed out that embodiment described above is similarly applied to colored display application.For this purpose, three can be used
Colored filter is arranged as light source, and in big visual angle three-dimensional display apparatus in color (or white) LED light bar.Colored filter
Placement can be stacked with phase board and spatial light modulator and stacking order is variable.Such as colored filter can be set in backlight
Between plate and spatial light modulator, between spatial light modulator and phase board or after phase board.Preferably, colorized optical filtering
Piece is arranged between spatial light modulator and phase board.The light beam projected from backlight light is provided more by spatial light modulator
The image information of visual angle naked eye 3D display, then loads wavelength information by colored filter, finally realizes that position is mutually adjusted by phase board
System, to form multiple convergence light fields in the front visible area of phase board to realize the effect of naked eye 3D display.
Compared with prior art, the big visual angle three-dimensional display apparatus of the utility model has many advantages, such as.Such as it can provide
Biggish field angle on any direction of plane can no visual watch clearly naked eye 3D or 2D image tiredly.
For another example, since diffraction optical element can eliminate 0 grade of diffraction, enabled amount is concentrated in the diffraction time needed, therefore obviously mentions
High diffraction efficiency.For another example, backlight (including LED light source, light guide plate and optical film) and Fresnel Lenses are using existing
Nanometer embossing industrialized production, manufacture craft is mature, and homogeneity of product is easily guaranteed that and advantageously reduces cost.This
Outside, each unit of backlight can modularized design, each module realizes relatively independent optical characteristics (such as maintaining uniform illumination
Property, emergent light angle of divergence etc.), this makes each Decoupled, simplifies design process and holds that the adjustment of optical parameter more
Easily.Furthermore the big visual angle three-dimensional display apparatus of the utility model is made of multiple film light device stacks, with existing liquid crystal display
Curtain framework good compatibility, application field are wide.
Described above is the principles of the present invention and preferred embodiment.It is limited however, the utility model should not be construed
In the specific embodiment discussed.Above-mentioned preferred embodiment is considered as illustrative and not restrictive, and answers
When understanding, those skilled in the art is without departing from the scope of the utility model defined by following claims
Under the premise of, variation can be made in these embodiments.
Claims (15)
1. a kind of big field angle three-dimensional display apparatus, characterized by comprising:
Backlight is configured to the light beam that light source issues being converted to the first collimated light beam；
Spatial light modulator on first collimated light beam direction of propagation, being configured to will be more by amplitude modulation mode
Visual angle mixed image information is loaded on first collimated light beam to form the second collimated light beam；And
Phase board on second collimated light beam direction of propagation, with diffraction structure, the diffraction structure is configured to
The image at each visual angle in the carried image of the second collimated light beam is projected to corresponding one group of observation position.
2. device as described in claim 1, wherein the spatial light modulator includes the first volumetric pixel, every individual pixel packet
Containing multiple sub-pixes, each sub-pix corresponds to different visual angles, and the diffraction structure includes multiple microstructure units, Mei Gewei
Structural unit is configured to that the sub-pix at the same visual angle will be corresponded in multiple volumetric pixels of the spatial light modulator
Light beam be projected to one group of observation position associated with the sub-pix.
3. device as claimed in claim 2, the diffraction structure is realized using one of the following structure: 1-dimention nano light
Grid, two-dimensional nano grating, the nanometer grating of spatial reuse, nanometer grating array and diffraction optical element.
4. device as claimed in claim 3, wherein the diffraction structure is realized using diffraction optical element, by adjusting institute
The diffraction efficiency that the constructional depth for stating diffraction optical element makes diffraction light at diffraction time zero level is minimum.
5. device as described in claim 1, wherein the backlight includes:
Light guide plate, it includes the first micro-structure for being located at light guide plate upper surface, lower surface or inside, which has week
The first unit of phase property distribution, the light beam that the light source issues is through first microstructures scatters to the outside of light guide plate；And
The optical film being stacked with the light guide plate, it includes the second micro-structures for being located at optics film surface, this is second micro-
Structure has the second unit of periodic distribution, and the light beam of the outside through first microstructures scatters to light guide plate is micro- through second
Structural Transformation is first collimated light beam.
6. device as claimed in claim 5, wherein the first unit is microprism, lenticule, free-form surface lens or recessed
One of hole.
7. device as claimed in claim 5, wherein the second unit is in lenticule, Fresnel lens or thin film lens
One kind.
8. device as claimed in claim 5, wherein the backlight further comprises barn door, and it includes with described first
Micro-structure and the second micro-structure match corresponding light-shielding structure to filter out the stray light being emitted from second micro-structure.
9. device as claimed in claim 8, the barn door is set to one in lower column position: light guide plate and optical film it
Between, inside the light guide plate and inside the optical film.
10. device as claimed in claim 5, wherein the light source is integrated in said device and is located at the backlight
The side of plate.
11. device as claimed in claim 10, wherein the light source is LED line array light source.
12. device as described in claim 1, wherein the spatial light modulator is liquid crystal display.
13. device as described in claim 1, wherein further comprise between the spatial light modulator and phase board
Barn door.
14. device as described in claim 1, wherein the light source is that white light source or three primary colors light source, described device are further
Including the colored filter being stacked with the spatial light modulator and phase board.
15. device as claimed in claim 14, wherein the colored filter is set to the spatial light modulator and phase board
Between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820789292.5U CN208818950U (en) | 2018-05-25 | 2018-05-25 | Big field angle three-dimensional display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820789292.5U CN208818950U (en) | 2018-05-25 | 2018-05-25 | Big field angle three-dimensional display apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244469A (en) * | 2019-06-19 | 2019-09-17 | 中国人民解放军陆军装甲兵学院 | A kind of determination method and system of directional scattering device position and diffusion angle |
| CN110913201A (en) * | 2019-10-22 | 2020-03-24 | 北京邮电大学 | Light field display structure and synthetic image coding method |
| CN112748583A (en) * | 2020-08-11 | 2021-05-04 | 上海鲲游光电科技有限公司 | Optical field modulator and modulation method thereof |
| CN112835206A (en) * | 2019-11-25 | 2021-05-25 | 苏州苏大维格科技集团股份有限公司 | Three-dimensional display device |
| CN112835205A (en) * | 2019-11-25 | 2021-05-25 | 苏州苏大维格科技集团股份有限公司 | Three-dimensional display device |
-
2018
- 2018-05-25 CN CN201820789292.5U patent/CN208818950U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244469A (en) * | 2019-06-19 | 2019-09-17 | 中国人民解放军陆军装甲兵学院 | A kind of determination method and system of directional scattering device position and diffusion angle |
| CN110244469B (en) * | 2019-06-19 | 2021-03-23 | 中国人民解放军陆军装甲兵学院 | Method and system for determining position and diffusion angle of directional diffuser |
| CN110913201A (en) * | 2019-10-22 | 2020-03-24 | 北京邮电大学 | Light field display structure and synthetic image coding method |
| CN110913201B (en) * | 2019-10-22 | 2021-03-30 | 北京邮电大学 | Light field display structure and synthetic image coding method |
| CN112835206A (en) * | 2019-11-25 | 2021-05-25 | 苏州苏大维格科技集团股份有限公司 | Three-dimensional display device |
| CN112835205A (en) * | 2019-11-25 | 2021-05-25 | 苏州苏大维格科技集团股份有限公司 | Three-dimensional display device |
| CN112748583A (en) * | 2020-08-11 | 2021-05-04 | 上海鲲游光电科技有限公司 | Optical field modulator and modulation method thereof |
| CN112748583B (en) * | 2020-08-11 | 2022-05-13 | 上海鲲游光电科技有限公司 | Optical field modulator and modulation method thereof |
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