CN109375469A - Space projection display device - Google Patents
Space projection display device Download PDFInfo
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- CN109375469A CN109375469A CN201811342791.0A CN201811342791A CN109375469A CN 109375469 A CN109375469 A CN 109375469A CN 201811342791 A CN201811342791 A CN 201811342791A CN 109375469 A CN109375469 A CN 109375469A
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- 238000013507 mapping Methods 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 abstract description 5
- 230000002688 persistence Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
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- 206010019233 Headaches Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The present invention relates to a kind of space projection display devices.The space projection display device includes micro- vibrating mirror array, array of source mould group, light reflecting board, regulation mould group and light-modulation panel, by light reflecting board and the regulation mould group light coupling that issues array of source mould group into micro- vibrating mirror array, and multiple virtual object point projection light pencils of micro- vibrating mirror array into space are controlled, so that the multi beam light pencil projected on each virtual object point forms transmitting light beam.When user is when the light beam intersection for receiving micro- vibrating mirror array projection is seen in specific observation area, it is visually equivalent to from virtual object point to human eye and emits light beam, if the virtual object point high-velocity scanning light beam of difference into space, due to the visual persistence phenomenon of human eye, the light beam of high-velocity scanning can be identified as continuous light beam by human eye.Therefore, when multiple virtual object point high-velocity scanning light beams in from space projection display device to space, it appears that as by virtual scene display in real space, to realize naked eye 3D display.
Description
Technical field
The present invention relates to three-dimensional stereo display technique fields, in particular to a kind of space projection display device.
Background technique
The method that conventional three-dimensional Projection Display uses mainly has disparity barrier method, cylindrical lenses method and directive property Light Source Method.
Disparity barrier method is to be known as longitudinal paliform optical barrier of disparity barrier in screen surface setting to control light going direction,
It allows left and right two to receive different images generation parallax and reaches stereo display effect；Disparity barrier Later development is liquid crystal film, is led to
The Push And Release of light is realized in the overturning for crossing the liquid crystal molecule of liquid crystal film, is reached the identical realization effect of paliform optical barrier, is lacked
Point is that part direction light is blocked, and brightness is low, and viewing angle requires strictly, and resolution loss is serious.Cylindrical lenses method be
One elongated semicylindrical lens array is set before display screen, and the light of display pixel is by the refractions of cylindrical lens, by anaglyph
It is projected to right and left eyes respectively, the stereoscopic fusion through visual centre obtains three-dimensional sense, the disadvantage is that viewing angle is stringent, resolution loss
Seriously.Directive property Light Source Method be provided backlighting for after the pixel of LCD using the minimum linear light source of width side by side so that
The image transmission path of parity column pixel separates, so that right and left eyes see corresponding picture, the disadvantage is that viewing angle requires
Strictly.Three kinds of above-mentioned traditional three-dimensional projection display technologies are all based on binocular solid parallax principle, to the left and right by difference
Eye conveying has the 2D anaglyph of slight difference, melts picture in the brain, to generate sense of stereoscopic vision, therefore causes vision influx
Conflict, and then lead to the generation of the symptoms such as headache, dizziness, while the missing of motion parallax will lead to the lofty of vision conversion, from
And reduce the validity of visual experience.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of space projection display devices, to solve the above problems.
To achieve the above object, the invention provides the following technical scheme:
A kind of space projection display device, comprising:
Micro- vibrating mirror array is made of multiple micro- galvanometer units；
Array of source mould group provides array in the input path of micro- vibrating mirror array for micro- vibrating mirror array
Light pencil；
Light reflecting board is located at micro- vibrating mirror array far from described for the plate for being integrated with multiple micro- reflective diffractive elements
The side of array of source mould group, the light pencil for exporting the array of source mould group imported into the micro- of micro- vibrating mirror array
Galvanometer unit, micro- reflective diffractive element have at least two-stage effective every beam light pencil that the array of source mould group exports
Diffraction function；
Regulate and control mould group, for according to the spatial positional informations of the corresponding multiple virtual object points of the virtual scene to be shown and
The mapping relations of scanning information control the multiple virtual object point projection light pencils of the micro- vibrating mirror array into space, so that
Project the transmitting cone of beam that the multi beam light pencil on each virtual object point constitutes virtual object point；
Wherein, the spatial positional information include the virtual object point relative to micro- vibrating mirror array azimuth information and
Depth information, the scanning information include at least multiple micro- vibrations corresponding with each virtual object point in micro- vibrating mirror array
The scanning moment of mirror unit and scan angle；
Light-modulation panel is Pixel-level high speed spatial light modulator, is located at the light reflecting board far from micro- galvanometer battle array
The side of column, for modulating the beam energy of micro- vibrating mirror array output.
Optionally, micro- reflective diffractive element has every beam light pencil that the array of source mould group exports with two-stage
The diffraction function of effect.
Optionally, micro- reflective diffractive element has every beam light pencil that the array of source mould group exports with three-level
The diffraction function of effect.
Optionally, multiple micro- galvanometer units that micro- vibrating mirror array includes are arranged in same plane.
Optionally, multiple micro- galvanometer units that micro- vibrating mirror array includes are arranged in the Different Plane being parallel to each other.
Optionally, the array of source mould group is made of multiple light sources unit, each light source unit include lighting source and
Light collimates combined beam unit；
Micro- reflection diffraction list that the quantity for the light source unit that the array of source mould group includes and the light reflecting board include
The quantity of member is equal.
Optionally, the array of source mould group includes fiber coupling light source and light beam splitting modulation unit, the fiber coupling
Light source includes the coupling collimator of the first output optical fibre of light source unit and band, and the light source unit includes lighting source and light collimation
Combined beam unit；
The light source unit output light collimates combined beam light beam, is coupled into institute by the coupling collimator with first output optical fibre
State light beam splitting modulation unit；
The output end of the smooth beam splitting modulation unit is coupled with the second output optical fibre, for the fiber coupling light source is defeated
Light beam out is divided into multi beam light pencil numerically equal with the quantity of micro- reflective diffractive element of the light reflecting board.
Optionally, the light-modulation panel is transmission-type LCOS spatial light modulator or LCD spatial light modulator.
Optionally, the array of source mould group further includes angle adjustment array mould group, for the array of source mould group
The light beam of output carries out angle adjustment.
Space projection display device provided by the invention includes micro- vibrating mirror array, array of source mould group, light reflecting board and tune
Mould group is controlled, and the light coupling for array of source mould group being issued by light reflecting board and regulation mould group is controlled into micro- vibrating mirror array
Multiple virtual object points of micro- vibrating mirror array into space project light pencil, so as to project the thin light of multi beam on each virtual object point
Beam forms transmitting light beam.When light beam intersection of the user in the micro- vibrating mirror array projection of specific observation area sight reception, visually etc.
It imitates in emitting light beam from virtual object point to human eye, if the virtual object point high-velocity scanning light beam of the difference into space, due to human eye
Visual persistence phenomenon, the light beam of high-velocity scanning can be identified as continuous light beam by human eye.Therefore, space projection display device to
When multiple virtual object point high-velocity scanning light beams in space, it appears that as by virtual scene display in real space.To this
Invention provides a kind of new space projection display device that can be realized naked eye 3D display.It is clear that the space projection is aobvious
Showing device also may be implemented 2D and show.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of space projection display device provided in an embodiment of the present invention.
Fig. 2 is a kind of structural schematic diagram of light source unit provided in an embodiment of the present invention.
Fig. 3 is a kind of structural schematic diagram of array of source mould group provided in an embodiment of the present invention.
Fig. 4 is the structural schematic diagram of one of Fig. 3 light beam splitting modulation unit.
Fig. 5 is the structural schematic diagram of another light beam splitting modulation unit in Fig. 3.
Fig. 6 is the structural schematic diagram of another space projection display device provided in an embodiment of the present invention.
Fig. 7 is the structural schematic diagram of another space projection display device provided in an embodiment of the present invention.
Fig. 8 is the structural schematic diagram of another space projection display device provided in an embodiment of the present invention.
Fig. 9 is the schematic illustration of space projection imaging.
Icon: 1- space projection display device；10- array of source mould group；The micro- vibrating mirror array of 30-；50- light reflecting board；70-
Regulate and control mould group；90- light-modulation panel；The micro- galvanometer unit of 31- first；The micro- galvanometer unit of 32- second；The micro- galvanometer unit of 33- third；
The micro- galvanometer unit of 34- the 4th；The micro- galvanometer unit of 35- the 5th；The micro- galvanometer unit of 36- the 6th；11- first light source unit；12- second
Light source unit；13- third light source unit；The micro- reflective diffractive element of 51- first；The micro- reflective diffractive element of 52- second；53- third
Micro- reflective diffractive element；111- lighting source；113- light collimates combined beam unit；115- fiber coupling light source；117- light beam splitting tune
Unit processed；1153- couples collimator；The first output optical fibre of 11531-；The second output optical fibre of 1171-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In description of the invention
In, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply opposite
Importance.
Fig. 1 shows a kind of structural schematic diagram of space projection display device 1 of present pre-ferred embodiments offer.Such as figure
Shown in 1, which includes array of source mould group 10, micro- vibrating mirror array 30, light reflecting board 50, regulation mould group
70 and light-modulation panel 90.Preferably clearly to illustrate to the embodiment of the present invention, defining the plane parallel with light reflecting board 50 is
XOY plane defines perpendicular to XOY plane and is Z-direction from the direction that micro- vibrating mirror array 30 is directed toward light reflecting board 50, and definition is vertical
In paper outwardly direction be Y-direction.
Array of source mould group 10 is located in the input path of micro- vibrating mirror array 30, provides for micro- vibrating mirror array 30
Array light pencil.Light reflecting board 50 is located at side of the micro- vibrating mirror array 30 far from the array of source mould group 10, and being used for will
The array light pencil that the array of source mould group 10 exports imported into micro- vibrating mirror array 30.Light reflecting board 50 is more to be integrated with
The plate of a micro- reflective diffractive element, each unit light that micro- reflective diffractive element exports the array of source mould group 10
Beam has the function of at least effective diffraction of two-stage.The number of beams for the array light pencil that array of source mould group 10 provides is numerically
The quantity for the micro- reflective diffractive element for being included with light reflecting board 50 is consistent.As shown in Fig. 2, array of source mould group 10 can be with
It is to be made of multiple light sources unit.Each light source unit includes that lighting source 111 and light collimation combined beam unit 113 form.Illumination
Light source 111 can be monochromatic or polychrome laser LD light emitting device, be also possible to LED light source.Lighting source 111 in the present embodiment
It is the laser LD light emitting device for including tri- kinds of wavelength of R, G, B.Light collimates combined beam unit 113 can be using the collimation in routine techniques
After lens group realizes the collimation of light beam and the collimation of three kinds of wavelength issued to laser LD light emitting device with space optical coupling device
Light beam conjunction beam, herein with no restrictions.Multiple light sources unit in array of source mould group 10 can arrange at equal intervals, i.e., arbitrarily
The interval of two neighboring light source unit is the same, and can also be arranged with unequal interval, i.e. arbitrary neighborhood two light source units
Interval is not the same.Multiple micro- reflective diffractive elements and multiple light sources when arranging at equal intervals, in light reflecting board 50
Unit one-to-one correspondence is arranged at equal intervals, and this measure is conducive to production, processing, assembly.
As shown in figure 3, array of source mould group 10 includes fiber coupling light source 115 in the mode of alternatively possible realization
With light beam splitting modulation unit 117.Fiber coupling light source 115 can be to be exported by a light source unit and band first shown in Fig. 2
The coupling collimator 1153 of optical fiber 11531 is constituted.The light that light source unit exports tri- kinds of wavelength of R, G, B collimates combined beam light beam, by band
The coupling collimator 1153 of first output optical fibre 11531 is coupled into light beam splitting modulation unit 117.Light beam splitting modulation unit 117 it is defeated
Outlet is coupled with the second output optical fibre 1171, and the light beam for exporting fiber coupling light source 115 is divided into N light beams, and each
The output energy of light beams can be with independent control, micro- reflective diffractive element that wherein numerical value of N and light reflecting board 50 are included
Quantity is consistent.
As shown in figure 4, light beam splitting modulation unit 117 can be is integrated with a 1-1*N type PLC plane wave on a silicon substrate
Lead splitter (in figure shown in A1), N number of M-Z type optical modulator (in figure shown in A2) and the second output optical fibre of N beam 1171 (A3 in figure
It is shown) device.1 beam can be inputted homogenizer and be divided into N beam output beam by 1-1*N type PLC slab guide splitter
Optical device.M-Z type optical modulator is a kind of electrooptic modulator, inputs light wave quilt at a Y-branch after one section of optical path
It is divided into two equal beams, is transmitted respectively two optical waveguides made of electrooptical material, its refractive index of this electrooptical material is with additional
The size of voltage and change, two-beam wave can be made to reach at the 2nd Y-branch generation phase difference.If the optical path difference of two-beam is
The integral multiple of wavelength, two-beam coherent enhancement；If the optical path difference of two-beam is the 1/2 of wavelength, two-beam is relevant to be offset, modulator
Very little is exported, therefore light wave can be modulated by controlling voltage.In specific implementation process, the light beam of light source unit output
Light beam splitting modulation unit 117, the 1-1* of light beam splitting modulation unit 117 are coupled by conventional 1153 device of fiber coupling collimator
The light beam being coupled into is divided into the grayscale information point after N beam light according to virtual scene to be shown by N-type PLC slab guide splitter
Energy modulation is not carried out by M-Z type optical modulator, modulated N light beams are exported by the second output optical fibre 1171.Second is defeated
The output end of optical fiber 1171 can have self-focus lens out with welding, or physically be connected with beam collimation lenticule, so that the
Light beam after the output of two output optical fibres 1171 is that collimated light beam or the second output optical fibre 1171 itself have extremely small numerical value
Aperture NA value, output beam approximation collimated light beam.
As shown in figure 5, light beam splitting modulation unit 117 includes 1 1-1*m type PLC in the mode of alternatively possible realization
1-1*n type PLC slab guide splitter (the A5 institute in figure of slab guide splitter (in figure shown in E), m with decoupling optical fiber
Show), m*n M-Z type optical modulator (in figure shown in A6) and the second output optical fibre of m*n beam 1171 (in figure shown in A7), m*n is in number
The quantity for the micro- reflective diffractive element for being included with light reflecting board 50 in value is consistent, i.e., is equal to N in the present embodiment.Light
The light beam of source unit output is coupled into light beam splitting modulation unit 117, light beam splitting modulation unit 117 by conventional fiber coupler
In 1-1*m type PLC slab guide splitter the light beam being coupled into is divided into m light beams, every light beam of m light beams is again
Secondary be coupled into after 1-1*n type PLC slab guide splitter is divided into the output of n light beams, and m light beams are divided into m*n light beams altogether, according to
Energy modulation is carried out by m*n M-Z type optical modulator respectively according to the grayscale information m*n beam light of virtual scene to be shown, after modulation
Light beam by light beam splitting modulation unit 117 carry the second output optical fibre 1171 export.
Optionally, the array of source mould group 10 further includes angle adjustment array mould group, for the array of source mould
The light beam of 10 output of group carries out angle adjustment.
With continued reference to FIG. 1, micro- vibrating mirror array 30 includes multiple micro- galvanometer units.Preferably, in the present embodiment, each
Micro- galvanometer unit is a kind of two-dimentional micro electromechanical scanning device that can be achieved accurately to control.It is clear that each micro- galvanometer unit
It can be two micro electronmechanical one-dimensional scanning devices, compared to micro electronmechanical two-dimensional scanning device, can be realized identical function, but
Structure can be complicated.The quantity of micro- galvanometer unit is R times of micro- reflective diffractive element quantity on the light reflecting board 50, R
For the integer greater than 1.For example, working as each unit light beam that micro- reflective diffractive element exports the array of source mould group 10
When having the function of the effective diffraction of two-stage, R=2, as shown in Figure 1.When micro- reflective diffractive element is to the array of source mould
When each unit light beams of 10 output of group have the function of three-level effective diffraction, R=3, as shown in Figure 6.It is clear that the number of R
The effective diffraction that each unit light beam that value and micro- reflective diffractive element export the array of source mould group 10 has
The series of function is related.It for ease of description, include that multiple light sources unit is denoted as first light source unit by array of source mould group 10
11, second light source unit 12, third light source unit 13 ....It include that multiple micro- reflective diffractive elements are denoted as the by light reflecting board 50
One micro- reflective diffractive element 51, second micro- reflective diffractive element 52, the micro- reflective diffractive element 53 ... of third.By micro- vibrating mirror array
30 are denoted as first micro- galvanometer unit 31, second micro- galvanometer unit 32, the micro- galvanometer unit 33 of third, the comprising multiple micro- galvanometer units
Four micro- galvanometer units 34, the 5th micro- galvanometer unit 35, the 6th micro- galvanometer unit 36 ....
1 working principle of space projection display device shown in FIG. 1 is as follows: the beam Propagation that first light source unit 11 exports arrives
First micro- reflective diffractive element 51 on light reflecting board 50, first micro- reflective diffractive element 51 carry out two-stage diffraction to light beam and divide
Not Dao Xiang first micro- galvanometer unit 31 and second micro- galvanometer unit 32, first micro- galvanometer unit 31 and second micro- galvanometer unit 32 are logical
The scanning motion for crossing galvanometer carries out angle scanning to incident light beam respectively.The beam Propagation that second light source unit 12 exports is to light
The micro- reflective diffractive element 52 of the second of reflecting plate 50, second micro- reflective diffractive element 52 carry out two-stage diffraction to light beam and lead respectively
To the micro- galvanometer unit 33 of third and the 4th micro- galvanometer unit 34, the micro- galvanometer unit 33 of third and the 4th micro- galvanometer unit 34 pass through vibration
The scanning motion of mirror carries out angle scanning to incident light beam respectively.The rest may be inferred ... ....
1 working principle of space projection display device shown in fig. 6 is as follows: the beam Propagation that first light source unit 11 exports arrives
First micro- reflective diffractive element 51 on light reflecting board 50, first micro- reflective diffractive element 51 carry out three-level diffraction to light beam and divide
Not Dao Xiang first micro- galvanometer unit 31, second micro- galvanometer unit 32 and the micro- galvanometer unit 33 of third, first micro- galvanometer unit 31,
Two micro- galvanometer units 32 and the micro- galvanometer unit 33 of third carry out angle to incident light beam respectively by the scanning motion of galvanometer and sweep
It retouches.Second micro- reflective diffractive element 52 of the beam Propagation that second light source unit 12 exports to light reflecting board 50, second micro- reflection
Diffraction element 52 carries out three-level diffraction to light beam and is individually directed the 4th micro- galvanometer unit 34, the 5th micro- galvanometer unit 35 and the 6th
Micro- galvanometer unit 36, the 4th micro- galvanometer unit 34, the 5th micro- galvanometer unit 35 and the 6th micro- galvanometer unit 36 are swept by galvanometer
It retouches movement and angle scanning is carried out to incident light beam respectively.The rest may be inferred ... ....
Optionally, multiple micro- galvanometer units can be all disposed in same plane, for example, as shown in figures 1 to 6.It is multiple
Micro- galvanometer unit can also be arranged in the Different Plane being parallel to each other, for example, as shown in Figure 7 and Figure 8.It is clear that multiple micro-
Galvanometer unit can also be respectively distributed in the plane that four or more are parallel to each other, and this will not be repeated here.When multiple micro- vibrations
It, can be by the spacing between setting Different Plane, so that being located remotely from institute when mirror unit is arranged in the Different Plane being parallel to each other
The micro- galvanometer unit for stating the plane of array of source mould group 10 will not be to micro- galvanometer of the plane close to the array of source mould group 10
The scanning ray of unit causes to block.
Regulate and control mould group 70, for the spatial positional information according to the corresponding multiple virtual object points of the virtual scene to be shown
The multiple virtual object point projection light pencils of the micro- vibrating mirror array 30 into space are controlled with the mapping relations of scanning information,
So as to project the transmitting cone of beam that the multi beam light pencil on each virtual object point constitutes virtual object point.Wherein, the sky
Between location information include azimuth information and depth information of the virtual object point relative to micro- vibrating mirror array 30, the scanning
When information includes at least the scanning of multiple micro- galvanometer units corresponding with each virtual object point in micro- vibrating mirror array 30
Quarter and scan angle.
Light-modulation panel 90 is Pixel-level high speed spatial light modulator, is placed in the light reflecting board 50 far from micro- vibration
The side of lens array 30, the beam energy exported for modulating micro- vibrating mirror array 30.The light-modulation panel 90 can be
Transmission-type LCOS spatial light modulator, is also possible to LCD spatial light modulator.
As shown in figure 9, will simply introduce the principle of space projection imaging below.Why human eye is it can be seen that object, sheet
It is reception of the human eye to the light beam after the reflection or refraction or scattering process of the light wave generation light being irradiated on object, human eye in matter
Characteristic make it possible to be converted to corresponding image information and estimate this object relative to people itself light that thus object issues
Position.Rendered according to the light field of Levoy theoretical, any light human eye of intensity and directional information is carried in space therefore can be with
Pass through reconstruct.The light radiation function of anisotropy light all in space is academicly generally referred to light field, be in space simultaneously
The parametrization of four-dimensional light radiation field comprising position and direction information indicates.The side that the characteristic of human eye makes it only need to have light
The spatial positional information for obtaining image can be converted by the information of brain to information and energy information.Virtual 3D scene can be with
It is considered to be made of the virtual object point of limited not necessary being, can be had by reconstructing each virtual object point of sampling
Radiation direction information and energy information reconstruct three-dimensional scenic.The embodiment of the present invention is by controlling micro- vibrating mirror array 30 with difference
Angle scans projection multi beam and formed with the light beam of specific light energy at the same position E into space have space point light source point
The virtual object point of cloth characteristic, when user is when specific observation area is watched, visually these light beams are all outside by virtual object point E
The cone of beam of sending.According to the spatial positional information and each micro- galvanometer of the corresponding limited sampling virtual point of virtual scene to be shown
The mapping relations of the scanning information of unit control micro- vibrating mirror array 30 to space high-velocity scanning projecting beam, thus in space
Limited limited virtual luminous point with particular beam characteristic and spatial relation is formed, due to the persistence of vision of human eye
Phenomenon, after human eye receives, visually like virtual scene display is in real space.
In specific implementation process, each micro- galvanometer unit can project light beam in each predetermined time, each
Virtual object point to be shown provides corresponding divergent beams by least two micro- galvanometer units and bores, and multiple micro- galvanometer units exist
The light beam projected in preset time constitutes the cone of beam for the virtual object point that must be shown in this preset time, as shown in figure 9, three
A micro- galvanometer unit is respectively that virtual object point E and virtual object point F respectively provide light beam, constitutes virtual object point E and virtual object point F
Part divergent beams cone, user is at a certain position in observation area, after receiving virtual object point E and virtual object point F, visually
Think that there are virtual object point E and virtual object point F in the area to be shown for observing position certain distance away from it.
Space projection display device 1 provided by the invention includes micro- vibrating mirror array 30, array of source mould group 10, light reflecting board
50, regulate and control mould group 70 and light-modulation panel 90, issued array of source mould group 10 by light reflecting board 50 and regulation mould group 70
Light coupling controls multiple virtual object point projection light pencils of micro- vibrating mirror array 30 into space into micro- vibrating mirror array 30, with
Make to project the multi beam light pencil on each virtual object point and forms transmitting light beam.Micro- vibration is received when user sees in specific observation area
When the light beam intersection that lens array 30 projects, visually it is equivalent to from virtual object point to human eye and emits light beam, if into space
Different virtual object point high-velocity scanning light beams, due to the visual persistence phenomenon of human eye, the light beam of high-velocity scanning can be identified as by human eye
Continuous light beam.Therefore, when multiple virtual object point high-velocity scanning light beams in from space projection display device 1 to space, it appears that
Picture is by virtual scene display in real space.To which the present invention provides a kind of new skies that can be realized naked eye 3D display
Between projection display equipment 1.It is shown it is clear that 2D also may be implemented in the space projection display device 1.
All features disclosed in this specification can combine in any way other than mutually exclusive feature.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.In the description of the present invention, it is also necessary to explanation, term
The orientation or positional relationship of the instructions such as "upper", "lower", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of space projection display device characterized by comprising
Micro- vibrating mirror array is made of multiple micro- galvanometer units；
Array of source mould group provides array thin light in the input path of micro- vibrating mirror array for micro- vibrating mirror array
Beam；
Light reflecting board is located at micro- vibrating mirror array far from the light source for the plate for being integrated with multiple micro- reflective diffractive elements
The side of array mould group, the light pencil for exporting the array of source mould group imported into micro- galvanometer of micro- vibrating mirror array
Unit, micro- reflective diffractive element there is at least two-stage effectively to spread out every beam light pencil that the array of source mould group exports
Penetrate function；
Regulate and control mould group, for the spatial positional information and scanning information according to the corresponding multiple virtual object points of virtual scene to be shown
Mapping relations control the multiple virtual object points projection light pencils of the micro- vibrating mirror array into space, so as to project every
Multi beam light pencil on a virtual object point constitutes the transmitting cone of beam of virtual object point；
Wherein, the spatial positional information includes azimuth information and depth of the virtual object point relative to micro- vibrating mirror array
Information, the scanning information include at least multiple micro- galvanometer lists corresponding with each virtual object point in micro- vibrating mirror array
The scanning moment of member and scan angle；
Light-modulation panel is Pixel-level high speed spatial light modulator, positioned at the light reflecting board far from micro- vibrating mirror array
Side, for modulating the beam energy of micro- vibrating mirror array output.
2. space projection display device according to claim 1, which is characterized in that micro- reflective diffractive element is to described
Every beam light pencil of array of source mould group output has the function of the effective diffraction of two-stage.
3. space projection display device according to claim 1, which is characterized in that micro- reflective diffractive element is to described
Every beam light pencil of array of source mould group output has the function of the effective diffraction of three-level.
4. space projection display device according to claim 1, which is characterized in that micro- vibrating mirror array includes multiple
Micro- galvanometer unit is arranged in same plane.
5. space projection display device according to claim 1, which is characterized in that micro- vibrating mirror array includes multiple
Micro- galvanometer unit is arranged in the Different Plane being parallel to each other.
6. space projection display device according to claim 1, which is characterized in that the array of source mould group is by multiple light
Source unit is constituted, and each light source unit includes lighting source and light collimation combined beam unit；
Micro- reflective diffractive element that the quantity for the light source unit that the array of source mould group includes and the light reflecting board include
Quantity is equal.
7. space projection display device according to claim 1, which is characterized in that the array of source mould group includes optical fiber
Coupling light source and light beam splitting modulation unit, the fiber coupling light source include that the coupling of the first output optical fibre of light source unit and band is quasi-
Straight device, the light source unit include lighting source and light collimation combined beam unit；
The light source unit output light collimates combined beam light beam, is coupled into the light by the coupling collimator with first output optical fibre
Beam splitting modulation unit；
The output end of the smooth beam splitting modulation unit is coupled with the second output optical fibre, for by the fiber coupling light source output
Light beam is divided into multi beam light pencil numerically equal with the quantity of micro- reflective diffractive element of the light reflecting board.
8. space projection display device according to claim 1, which is characterized in that the light-modulation panel is transmission-type
LCOS spatial light modulator or LCD spatial light modulator.
9. space projection display device according to claim 1, which is characterized in that the array of source mould group further includes angle
Degree adjustment array mould group, the light beam for exporting to the array of source mould group carry out angle adjustment.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855968A (en) * | 2019-12-04 | 2020-02-28 | 四川长虹电器股份有限公司 | Projection display apparatus using self-luminous pixel array device |
| CN111487639A (en) * | 2020-04-20 | 2020-08-04 | 深圳奥锐达科技有限公司 | Laser ranging device and method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281599A (en) * | 2000-03-29 | 2001-10-10 | Seiko Epson Corp | Projection display device |
| US20080297731A1 (en) * | 2007-06-01 | 2008-12-04 | Microvision, Inc. | Apparent speckle reduction apparatus and method for mems laser projection system |
| US20090251670A1 (en) * | 2008-04-03 | 2009-10-08 | Motorola, Inc. | Optical feedback for high speed scan mirror |
| JP2010085819A (en) * | 2008-10-01 | 2010-04-15 | Hitachi Metals Ltd | Projection type display device |
| US20140268062A1 (en) * | 2013-03-12 | 2014-09-18 | 3DIcon Corporation | Holoform 3d projection display |
| CN105190405A (en) * | 2013-03-15 | 2015-12-23 | 图象欧洲公司 | Projector optimized for modulator diffraction effects |
| CN105911700A (en) * | 2016-07-01 | 2016-08-31 | 成都理想境界科技有限公司 | Near-to-eye display system, virtual reality equipment and augmented reality equipment |
| CN106773490A (en) * | 2017-01-17 | 2017-05-31 | 上海蔚来汽车有限公司 | Optical texture, optical system and optical means for eliminating laser projection speckle |
| JP2018025816A (en) * | 2017-10-04 | 2018-02-15 | アイマックス シアターズ インターナショナル リミテッド | Projector optimised for modulator diffraction effect |
| CN207502833U (en) * | 2017-12-08 | 2018-06-15 | 深圳创维新世界科技有限公司 | Virtual reality display optical system and virtual reality glasses |
| CN108628087A (en) * | 2017-03-20 | 2018-10-09 | 成都理想境界科技有限公司 | A kind of projection arrangement and aerial image method |
| CN208984944U (en) * | 2018-11-13 | 2019-06-14 | 深圳创维新世界科技有限公司 | Space projection display device |
-
2018
- 2018-11-13 CN CN201811342791.0A patent/CN109375469B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281599A (en) * | 2000-03-29 | 2001-10-10 | Seiko Epson Corp | Projection display device |
| US20080297731A1 (en) * | 2007-06-01 | 2008-12-04 | Microvision, Inc. | Apparent speckle reduction apparatus and method for mems laser projection system |
| US20090251670A1 (en) * | 2008-04-03 | 2009-10-08 | Motorola, Inc. | Optical feedback for high speed scan mirror |
| JP2010085819A (en) * | 2008-10-01 | 2010-04-15 | Hitachi Metals Ltd | Projection type display device |
| US20140268062A1 (en) * | 2013-03-12 | 2014-09-18 | 3DIcon Corporation | Holoform 3d projection display |
| CN105190405A (en) * | 2013-03-15 | 2015-12-23 | 图象欧洲公司 | Projector optimized for modulator diffraction effects |
| CN105911700A (en) * | 2016-07-01 | 2016-08-31 | 成都理想境界科技有限公司 | Near-to-eye display system, virtual reality equipment and augmented reality equipment |
| CN106773490A (en) * | 2017-01-17 | 2017-05-31 | 上海蔚来汽车有限公司 | Optical texture, optical system and optical means for eliminating laser projection speckle |
| CN108628087A (en) * | 2017-03-20 | 2018-10-09 | 成都理想境界科技有限公司 | A kind of projection arrangement and aerial image method |
| JP2018025816A (en) * | 2017-10-04 | 2018-02-15 | アイマックス シアターズ インターナショナル リミテッド | Projector optimised for modulator diffraction effect |
| CN207502833U (en) * | 2017-12-08 | 2018-06-15 | 深圳创维新世界科技有限公司 | Virtual reality display optical system and virtual reality glasses |
| CN208984944U (en) * | 2018-11-13 | 2019-06-14 | 深圳创维新世界科技有限公司 | Space projection display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855968A (en) * | 2019-12-04 | 2020-02-28 | 四川长虹电器股份有限公司 | Projection display apparatus using self-luminous pixel array device |
| CN111487639A (en) * | 2020-04-20 | 2020-08-04 | 深圳奥锐达科技有限公司 | Laser ranging device and method |
| CN111487639B (en) * | 2020-04-20 | 2024-05-03 | 深圳奥锐达科技有限公司 | Laser ranging device and method |
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| Publication number | Publication date |
|---|---|
| CN109375469B (en) | 2023-10-31 |
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