CN208984892U - 3D display device - Google Patents
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- CN208984892U CN208984892U CN201820791579.1U CN201820791579U CN208984892U CN 208984892 U CN208984892 U CN 208984892U CN 201820791579 U CN201820791579 U CN 201820791579U CN 208984892 U CN208984892 U CN 208984892U
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Abstract
The utility model relates to display technologies, in particular to the device for realizing the all-round display of naked eye three-dimensional image.According to the three-dimensional display apparatus of the utility model one aspect, characterized by comprising: light source module group, is configured to issue the first light beam；Spatial light modulator in first direction of beam propagation is configured to that multi-angle of view mixed image information is loaded on first light beam to form the second light beam by amplitude modulation mode；And the phase board in second direction of beam propagation, with diffraction structure, the diffraction structure is configured to the image of the different perspectives in the carried image of the second light beam being projected to corresponding multiple observation positions.
Description
Technical field
The present invention relates to display technologies, in particular to the device for realizing the all-round display of naked eye three-dimensional image.
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.
Summary of the invention
It is an object of the present invention to provide a kind of three-dimensional display apparatus, design simplicity low with manufacturing cost and knot
The advantages that structure is compact.
Include according to the three-dimensional display apparatus of one aspect of the invention:
Light source module group is configured to issue the first light beam；
Spatial light modulator in first direction of beam propagation, being configured to will be more by amplitude modulation mode
Visual angle mixed image information is loaded on first light beam to form the second light beam；And
Phase board in second direction of beam propagation, with diffraction structure, the diffraction structure is configured to
The image of different perspectives in the carried image of second light beam is projected to corresponding multiple observation positions.
Preferably, in above-mentioned apparatus, first light beam is directional light or point light source diverging light.
Preferably, in above-mentioned apparatus, the spatial light modulator includes multiple volumetric pixels, and every individual pixel includes multiple
Sub-pix, each sub-pix correspond to different visual angles, and the diffraction structure includes multiple nano structured units, each nano junction
Structure unit is configured to for the light beam for corresponding to the sub-pix at the same visual angle in multiple volumetric pixels being projected to and the Asia picture
The associated multiple observation positions of element.
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 light source module group includes:
Light source；
Backlight comprising:
Light guide plate, the light source are located at the side of the light guide plate, the light guide plate include positioned at light guide plate upper surface, under
First micro-structure on surface or inside, first micro-structure have the first unit of periodic distribution, so that the light source issues
Light beam 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, one in lower column position: between light guide plate and optical film, in the light guide plate
Inside portion and the optical film.
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.
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 three-dimensional display apparatus of one embodiment of the invention.
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 nano structured 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 nano structured 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 longitudinal field angle.
Fig. 7 is to show a kind of schematic diagram of multi-view image display structure for expanding transverse field angle.
Fig. 8 is the schematic diagram for showing another multi-view image for expanding transverse field angle and showing structure.
Fig. 9 be show it is a kind of by and meanwhile expand vertical and horizontal field angle come realize panorama show structure signal
Figure.
Figure 10 be show another by and meanwhile expand vertical and horizontal field angle come realize panorama show structure
Schematic diagram.
Specific embodiment
The purpose of the present invention is described in detail below in conjunction with attached drawing.
Fig. 1 is the schematic diagram according to the three-dimensional display apparatus of one embodiment of the invention.
Device 10 shown in FIG. 1 includes light source module 110, spatial light modulator 120 and phase board 130.It is empty referring to Fig. 1
Between the setting of optical modulator 120 on the direction of propagation that light source module 110 issues light beam B1 (also known as following first light beam), lead to
It crosses amplitude modulation system multi-angle of view mixed image information is loaded on the first light beam B1 to form the second light beam B2.Phase board
130 are arranged on the direction of propagation of the second light beam B2, will be in the second carried image of light beam B2 using nano structured unit
The image at each visual angle be projected to it is corresponding it is multiple observation position (such as around display desktop curve (or curved surface) arrangement
Different viewing areas), to obtain the effect of the all-round display of naked eye 3D.
It will be seen that as following, the image at same visual angle can be converted at most using the nano structured unit of phase board
The visual windows of a viewpoint or multiple viewpoint arrays composition, to extend view under the premise of not increasing display information flux
Rink corner is to achieve the effect that panorama is shown.
Fig. 2 is the schematic diagram according to the light source module that can be applied to Fig. 1 shown device of another embodiment of the present invention.
Light source module 110 shown in Fig. 2 includes light source 111 and backlight 112.Backlight 112 for example can be directive property
Backlight comprising light guide plate 1121 and optical film 1122.Illustratively, optical film 1122 can be micronano optical film.Such as Fig. 2
Shown, first that the first unit (showing in figure with pit) with periodic distribution is formed in the upper surface of light guide plate 1121 is micro-
Structure 1121A.Light source 111 is located at the side of light guide plate 1121, and the light beam issued enters after light guide plate 1121, micro- through first
Structure 1121A scatters to the outside of light guide plate 1121.
Although the first micro-structure 1121A shown in Fig. 2 is formed in the upper surface of light guide plate 1121, it is also formed in
The lower surface or inside of light guide plate 1121.Preferably, the size of the first micro-structure is between 100nm-1mm.Back shown in Fig. 2
In tabula rasa 112, first unit is illustratively shown in the form of pits, but its optical element for being also possible to other forms,
For example including but be not limited to microprism, lenticule, free-form surface lens etc..
With continued reference to Fig. 2, optical film 1122 is located at the lower section of light guide plate 1121.Optical film 1122 can be with 1121 heap of light guide plate
It stacks or keeps certain the air gap (when the refractive index of optical film is close to or higher than the folding of light guide plate with light guide plate 1121
When penetrating rate).Further, it is also possible to one layer of low-index layer is inserted between light guide plate 1121 and optical film 1122 to avoid in leaded light
Total reflection condition is formed in plate.As shown in Fig. 2, forming the second unit with periodic distribution on the surface of optical film 1122
Second micro-structure 1122A, the second micro-structure 1122A are matched in structure with the first micro-structure 1121A, and effect is self-conductance in future
The divergent beams of tabula rasa 1121 are transformed to the collimated light beam B1 being emitted along one or more directions.Preferably, the second micro-nano structure
1122A is using configurations such as microlens array, array of Fresnel lenses, thin film lens array, diadactic structure optical arrays.Lenticule battle array
The lens unit of column, array of Fresnel lenses or thin film lens array can be made according to the relative position of the micro-structure in light guide plate
Optimization design is to obtain preferable collimation or convergence effect.Such as it can be by each unit or lenticule in optical film 112
Diameter design is bigger than the unit of light guide plate 1121 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 1121 can be by a kind of material
Material is constituted 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
The production such as etching technics, and batch duplicating is realized using nano-imprint process.
Preferably, barn door can be set in backlight 112 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 1123.The barn door include and first micro- knot
Structure 1121A and the second micro-structure 1122A matches corresponding barn door, so as to filter out the stray light being emitted from the second micro-structure.
Barn door can be single-layer or multi-layer absolute construction, and can be with light guide plate, optical film, spatial light modulator and Fresnel lens
Any one or multiple optical devices for being integrated to form function and service of group.
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 °.
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 the every of spatial light modulator
The image of a sub-pix projects a corresponding visual array 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 nano structured units, each nanostructure
Unit is aligned with the multi-view image pixel matching of spatial light modulator, that is to say, that will be from the more of spatial light modulator 120
The light beam of sub-pix in individual pixel corresponding to the same visual angle is projected to one group of observation position associated with the sub-pix.
Preferably, 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,
Nanometer grating, nanometer grating array and diffraction optical element (or secondary optics element) of spatial reuse etc..
Fig. 4 a-4d is the schematic diagram of the single nano structured 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 weeks
The grating region 1a-1i of phase and/or the angle of orientation, when the light of a sub-pix from spatial light modulator 120 reaches, no
With 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 observations
The projection of position, 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, for another example, nano structured unit 131 shown in Fig. 4 b is had using the form of grating spatial reuse by 9
Different cycles and/or the grating of the angle of orientation stack, when the light of a sub-pix from spatial light modulator 120 reaches
When, different gratings equally makes light deflection to different observation positions, it is thus achieved that the light beam at the same visual angle is to multiple
The projection for observing position, to expand field range.
Nano structured unit shown in Fig. 4 c and 4d is respectively two step diffraction optical elements and multi-step diffraction optics member
Part 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 nano structured unit shown in Fig. 4 a-4d
Schematic diagram.The light for being incident on single nano structured unit forms multiple visible areas by wavefront transform, these visible areas
Domain can 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 cross
To and/or longitudinal visual range, make observer that the information image at same visual angle can be observed when moving up and down.
In the present invention, term " panorama is shown " can be regarded as by while transversely implement with Longitudinal Extension field angle
Display.Illustrate respectively from extension transverse field angle and in terms of extending longitudinal field angle two individually below.
Fig. 6 is to show a kind of schematic diagram of multi-view image display structure for expanding longitudinal 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
Every individual pixel on 130 includes 4 sub-pixes or nano structured unit.Illustratively, each nano structured unit in Fig. 6
3 can be formed in the longitudinal direction as shown in Figure 6 by controlling the angle of orientation and/or the period of nanometer grating comprising 3 nanometer gratings
A visible area.Every individual pixel on phase board 130 is aligned with the matching of the volumetric pixel of spatial light modulator 120, thus can be 3
3 information images that same visual angle is presented in a visible area arranged along longitudinal direction, thus not increasing spatial light modulator institute
In the case where display information need to be refreshed, achieve the effect that expand longitudinal field angle.
Fig. 7 is to show a kind of schematic diagram of multi-view image display structure for expanding transverse field angle.
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
Volumetric pixel corresponds to an individual pixel of spatial light modulator 120 and includes 4 nano structured units.Each nanostructure list
Member is as multiple nanometer grating build stacks into (such as shown in Figure 4 b as).By the nanometer for controlling these spatial reuses
The angle of orientation of optical grating construction and period can transversely form multiple visible areas being distributed at regular intervals.On phase board 130
The volumetric pixel matching of every individual pixel and spatial light modulator 120 be aligned, thus can be in the visible area arranged at regular intervals
Multiple information images at same visual angle are presented in domain, thus the case where not increasing refreshing display information needed for spatial light modulator
Under, achieve the effect that expand field angle.
Fig. 8 is the schematic diagram for showing another multi-view image for expanding transverse field angle and showing structure.
Similarly, Fig. 8 is also illustrated by taking the display device at 4 visual angles as an example.In fig. 8, each of on phase board 130
Volumetric pixel correspond to an individual pixel of spatial light modulator 120 and include 4 nano structured units (such as with Fig. 4 c and
The nano structured unit of form shown in 4d).It, can be along cross by designing the structure of diffraction optical element according to Diffraction of light wave theory
To multiple visual (strip) regions being distributed at regular intervals of formation.Every individual pixel and space light modulation on phase board 130
The volumetric pixel of device 120 matches alignment, and same visual angle thus can be presented in visual (strip) region arranged at regular intervals
Multiple information images.Meanwhile the nano structured unit of different sub-pixes corresponding to the information image of different perspectives is in level side
It is sequentially distributed upwards, visible dots (line) the array area domain 1-4 of loop distribution is collectively formed, thus not increasing spatial light modulator institute
In the case where display information need to be refreshed, 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.
Fig. 9 be show it is a kind of by and meanwhile expand vertical and horizontal field angle come realize panorama show structure signal
Figure.Without loss of generality, Fig. 9 shows that structure is illustrated with the panorama of 3 individual pixels.It is every on phase board 130 in Fig. 9
Individual pixel includes 4 sub-pixes or nano structured unit.Illustratively, each nano structured unit in Fig. 6 can use
The form of pixel unit as shown in fig. 4 a, or using the form of grating spatial reuse as shown in Figure 4 b, can also use
The form of the diffraction optical element as shown in Fig. 4 c and 4d.Pass through the angle of orientation of control nanometer grating and/or period or design
Can the information at same visual angle be presented in multiple visible areas for laterally arranging along longitudinal direction simultaneously in the structure of diffraction optical element
Image, to reach the display effect of panorama in the case where not increasing refreshing display information needed for spatial light modulator.
Figure 10 be show another by and meanwhile expand vertical and horizontal field angle come realize panorama show structure
Schematic diagram.Compared with display structure shown in Fig. 9, difference essentially consists in multiple visible areas of the image information at the same visual angle
On the arrangement mode of vertical and horizontal.
It should be pointed out that embodiment described above is similarly applied to colored display application.For this purpose, three can be used
Color (or white) LED light bar centers colorized optical filtering as light source, and in the dress shown for realizing naked eye three-dimensional image
Piece.Colored filter can stack placement with phase board and spatial light modulator and stacking order is variable.Such as colored filter
It can be set between backlight and spatial light modulator, between spatial light modulator and phase board or after phase board.It is excellent
Selection of land, colored filter are arranged between spatial light modulator and phase board.The light beam projected from backlight light is by space
Optical modulator provides the image information of multi-angle of view naked eye 3D display, then wavelength information is loaded by colored filter, finally by position
Phase-plate realizes Spatial transmission, to form multiple convergence light fields in the front visible area of phase board to realize naked eye 3D display
Effect.
Compared with prior art, the device of the invention shown for realizing naked eye three-dimensional image has many advantages, such as.Example
Such as can provide biggish field angle on any direction of plane can no visual watch clearly naked eye 3D tiredly
Or 2D image.For another example, since diffraction optical element can eliminate 0 grade of diffraction, enabled amount is concentrated in the diffraction time needed, because
This significantly improves diffraction efficiency.For another example, backlight (including LED light source, light guide plate and optical film) and Fresnel Lenses
Using existing nanometer embossing industrialized production, manufacture craft is mature, and homogeneity of product is easily guaranteed that and is conducive to drop
Low cost.In addition, each unit of backlight can modularized design, each module realizes relatively independent optical characteristics (example
Such as illumination uniformity, the emergent light angle of divergence), this makes each Decoupled, simplifies design process and makes optical parameter
It is more easy to adjust.Furthermore the device of the invention shown for realizing naked eye three-dimensional image is by multiple film light device stacks
Composition, with existing LCD screen framework good compatibility, application field is wide.
Described above is the principle of the present invention and preferred embodiment.However, the present invention should not be construed as limited to be discussed
Specific embodiment.Above-mentioned preferred embodiment be considered as it is illustrative and not restrictive, and should understand that
When, those skilled in the art, can be under the premise of without departing from the following scope of the claims of the invention as defined
Variation is made in these embodiments.
Claims (14)
1. a kind of three-dimensional display apparatus, characterized by comprising:
Light source module group is configured to issue the first light beam；
Spatial light modulator in first direction of beam propagation is configured to multi-angle of view through amplitude modulation mode
Mixed image information is loaded on first light beam to form the second light beam；And
Phase board in second direction of beam propagation, with diffraction structure, the diffraction structure is configured to institute
The image for stating the different perspectives in the carried image of the second light beam is projected to corresponding multiple observation positions.
2. device as described in claim 1, wherein first light beam is directional light or point light source diverging light.
3. device as described in claim 1, wherein the spatial light modulator includes multiple volumetric pixels, every individual pixel packet
Containing multiple sub-pixes, each sub-pix corresponds to different visual angles, and the diffraction structure includes multiple nano structured units, each
Nano structured unit be configured to by multiple volumetric pixels correspond to the same visual angle sub-pix light beam be projected to
The associated multiple observation positions of the sub-pix.
4. device as claimed in claim 3, 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.
5. device as claimed in claim 4, 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.
6. device as described in claim 1, wherein the light source module group includes:
Light source；
Backlight comprising:
Light guide plate, the light source are located at the side of the light guide plate, and the light guide plate includes to be located at light guide plate upper surface, lower surface
Or the first internal micro-structure, first micro-structure have the first unit of periodic distribution, so that the light that the light source issues
First microstructures scatters described in Shu Jing are 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 light beam.
7. device as claimed in claim 6, wherein the first unit is microprism, lenticule, free-form surface lens or recessed
One of hole.
8. device as claimed in claim 6, wherein the second unit is in lenticule, Fresnel lens or thin film lens
One kind.
9. device as claimed in claim 6, 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.
10. device as claimed in claim 9, the barn door is located at one in lower column position: light guide plate and optical film it
Between, inside the light guide plate and inside the optical film.
11. device as claimed in claim 9, 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 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.
14. device as claimed in claim 13, 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 |
|---|---|---|---|
| CN201820791579.1U CN208984892U (en) | 2018-05-25 | 2018-05-25 | 3D display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791579.1U CN208984892U (en) | 2018-05-25 | 2018-05-25 | 3D display device |
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| CN208984892U true CN208984892U (en) | 2019-06-14 |
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| CN201820791579.1U Withdrawn - After Issue CN208984892U (en) | 2018-05-25 | 2018-05-25 | 3D display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531528A (en) * | 2018-05-25 | 2019-12-03 | 苏州苏大维格光电科技股份有限公司 | Three-dimensional display apparatus |
| CN110750041A (en) * | 2019-09-23 | 2020-02-04 | 上海影创信息科技有限公司 | Light field three-dimensional imaging device and system based on spatial light modulator |
| CN113031299A (en) * | 2021-03-29 | 2021-06-25 | 四川虹微技术有限公司 | Desktop true three-dimensional display method |
| CN116224618A (en) * | 2023-03-22 | 2023-06-06 | 华东交通大学 | A 3D information display system for desktop display applications |
-
2018
- 2018-05-25 CN CN201820791579.1U patent/CN208984892U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531528A (en) * | 2018-05-25 | 2019-12-03 | 苏州苏大维格光电科技股份有限公司 | Three-dimensional display apparatus |
| CN110531528B (en) * | 2018-05-25 | 2025-05-27 | 苏州苏大维格科技集团股份有限公司 | Three-dimensional display device |
| CN110750041A (en) * | 2019-09-23 | 2020-02-04 | 上海影创信息科技有限公司 | Light field three-dimensional imaging device and system based on spatial light modulator |
| CN113031299A (en) * | 2021-03-29 | 2021-06-25 | 四川虹微技术有限公司 | Desktop true three-dimensional display method |
| CN116224618A (en) * | 2023-03-22 | 2023-06-06 | 华东交通大学 | A 3D information display system for desktop display applications |
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