CN109194950A - Three-dimensional display apparatus and 3 D displaying method - Google Patents
Three-dimensional display apparatus and 3 D displaying method Download PDFInfo
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- CN109194950A CN109194950A CN201811345256.0A CN201811345256A CN109194950A CN 109194950 A CN109194950 A CN 109194950A CN 201811345256 A CN201811345256 A CN 201811345256A CN 109194950 A CN109194950 A CN 109194950A
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Abstract
A kind of three-dimensional display apparatus and method, device include: light-pulse generator, are configured as transmitting pulsed optical signals；The pulsed optical signals that light-pulse generator issues are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening by the first Dispersive Devices；The image data of pre-display three-dimension object is modulated on the pulsed optical signals of time domain broadening by signal modulator；First optical device, leads to the first optical device, and modulated optical signal realizes the scanning of X-direction and Y direction；Second optical device realizes the pulsed optical signals of X-direction and Y direction scanning, realizes the scanning of Z-direction by the second optical device；Display material, the pulsed optical signals after the first optical device and the second optics scan realize three-dimension object in the display of X-direction, Y direction and Z-direction by display material.The real Three-dimensional Display of object may be implemented by optical texture in the three-dimensional display apparatus and method of the embodiment of the present invention.
Description
Technical field
The present embodiments relate to three-dimensional display apparatus and 3 D displaying methods.
Background technique
With the development of informationized society, the demand that dynamic 3 D stereo true to nature is shown is more urgent.Common three-dimensional
Display technology has the holographic imaging technology for reproducing static real image, and the pseudo- dimension display technologies of tradition.They are by cost
High or visual angle it is limited it is equal limit, be all unable to satisfy the growing requirements analysis of capacity.People have in exploration always
Authentic, the real-time true three-dimensional stereo display method of effect.The pixel of true three-dimension display technlolgies have true distributed in three dimensions, and to
It is omnibearing luminous, form the D luminous body in a real space.This image space be full view, can more people see simultaneously
It examines, can preferably show practical scene.
According to the difference of imaging space constituted mode, true three-dimension display technlolgies can be divided into quiescent imaging technology and dynamic
Two kinds of swept-volume technology, the imaging space of static body imaging technique is a stationary solid space, is swept wherein by point
The modes such as the fluorescence excitation in face are shown, and the imaging space of dynamic body scanning technique is one by projection device and display
What the cycle movement of equipment was constituted.Although above scheme realizes true Three-dimensional Display, but it is low, aobvious that pixel resolution is individually present
The deficiencies of display screen is small in size, mechanical scanning limited speed.Currently, body dimension display technologies can be realized simple and coarse image
It has been shown that, but can't realize the high quality Dynamically Announce of multi-angle of view.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of three-dimensional display apparatus and imaging method, to solve above-mentioned technology
Problem.
At least one embodiment according to the present invention, provides a kind of three-dimensional display apparatus, comprising: light-pulse generator is matched
It is set to transmitting pulsed optical signals；The pulsed optical signals that light-pulse generator issues are transformed into time domain, shape from frequency domain by the first Dispersive Devices
At the pulsed optical signals after time domain broadening；The image data of pre-display three-dimension object is modulated to the time domain by signal modulator
On the pulsed optical signals of broadening；First optical device, leads to first optical device, and the modulated optical signal realizes X-axis
The scanning in direction and Y direction；Second optical device, by second optical device, the realization X-direction and Y-axis side
To the pulsed optical signals of scanning, the scanning of Z-direction is realized；Display material, through first optical device and second light
Pulsed optical signals after learning device scanning by the display material realization three-dimension object X-direction, Y direction and
The display of Z-direction.
For example, the light-pulse generator includes infrared pulse light source.
For example, described device further include: clock generator, for generating clock signal.
For example, the clock generator is connect with the light-pulse generator, the light-pulse generator is based on the clock generator
The first clock signal issued carries out the output of the pulsed optical signals.
For example, described device further include: picture coding device, described image code device and the signal modulator connect
It connects, for carrying out image coding to the three-dimension object, generates described image data.
For example, described device further include: clock generator, for generating clock signal, the clock generator with it is described
Picture coding device connection, the second clock signal that described image code device is issued based on the clock generator is to described three
It ties up object and carries out image coding.
For example, the second clock signal and first clock signal synchronization.
For example, first optical device includes two-dimensional space Dispersive Devices, pass through the two-dimensional space Dispersive Devices, institute
State the scanning that modulated optical signal realizes the X-direction and Y direction.
For example, the two-dimensional space Dispersive Devices carry out the scanning of X-direction and Y direction simultaneously.
For example, first optical device includes acousto-optic crsytal, and by the acousto-optic crsytal, the modulated pulsed light
Signal realizes the scanning of the X-direction.
For example, first optical device further includes frequency sweep generator, the radio-frequency signal generator and the acousto-optic crsytal phase
Even, the frequency sweep generator output radiofrequency signal is to the acousto-optic crsytal, so that by the pulsed optical signals of the acousto-optic crsytal
Distribution is on a different frequency.
For example, the tranmitting frequency of the frequency sweep generator is arranged based on the operating frequency range of the acousto-optic crsytal.
For example, the group/cording quantity of the quantity of the radiofrequency signal of the frequency sweep generator and the X-direction of the three-dimension object
It is related.
For example, the tranmitting frequency of the frequency sweep generator is based on the display material to the display result of the three-dimension object
It is modified.
For example, first optical device further includes the second Dispersive Devices, second Dispersive Devices are to by the sound
The pulsed optical signals of luminescent crystal carry out dispersion, and the pulsed optical signals is made to realize the scanning in Y direction.
For example, first optical device further includes the second Dispersive Devices, second Dispersive Devices are to the signal tune
The modulated pulsed optical signals of device processed carry out dispersion, and the pulsed optical signals is made to realize the scanning in Y direction.
For example, first optical device includes acousto-optic crsytal, by the acousto-optic crsytal, it is described in the Y-axis direction into
The pulsed optical signals of row scanning realize the scanning of the X-direction.
For example, first optical device further includes frequency sweep generator, the radio-frequency signal generator and the acousto-optic crsytal phase
Even, the frequency sweep generator output radiofrequency signal is to the acousto-optic crsytal, so that by the pulsed optical signals of the acousto-optic crsytal
Distribution is on a different frequency.
For example, the tranmitting frequency of the frequency sweep generator is arranged based on the operating frequency range of the acousto-optic crsytal.
For example, the group/cording quantity of the quantity of the radiofrequency signal of the frequency sweep generator and the X-direction of the three-dimension object
It is related.
For example, the tranmitting frequency of the frequency sweep generator is based on the display material to the display result of the three-dimension object
It is modified.
For example, second optical device includes: galvanometer, the galvanometer carries out periodic vibration, passes through the galvanometer, institute
State the scanning realized by the pulsed optical signals of the first optical device in Z-direction.
For example, described device further include: clock generator, for generating clock signal, the clock-signal generator with
The galvanometer connection, the galvanometer are vibrated based on the third clock signal that the clock-signal generator issues.
For example, the third clock signal is synchronous with described first and second clock signal.
For example, first optical device includes acousto-optic crsytal, and by the acousto-optic crsytal, the modulated pulsed light
Signal realizes the scanning of the X-direction.
For example, second optical device includes: galvanometer, the galvanometer carries out periodic vibration, passes through the galvanometer, institute
State the scanning realized by the pulsed optical signals of the first optical device in Z-direction；The scan period of the acousto-optic crsytal is T1,
The vibration period of the galvanometer is T3, wherein number of pixels * T1 of the T3=pre-display object in Z-direction.
For example, the Oscillation Amplitude of the galvanometer is arranged based on the pre-display three-dimension object in the length of Z-direction.
For example, described device further include: reflecting mirror, for the pulsed optical signals of the vibration mirror reflected to be further reflected into
In the display material.
For example, the galvanometer is based on periodic vibration, will be reflected by the pulsed optical signals of first optical device
The different location of the reflecting mirror changes the propagation angle and light path of the optical signal, changes the optical signal in the display
The depth of focus in material.
For example, described device further include: lens subassembly, the lens subassembly are located at the reflecting mirror and the display material
Between, the pulsed optical signals for reflecting the reflecting mirror are focused in the display material.
For example, described device further include: image intensifer, the optical signal for being issued to the light-pulse generator, or pass through institute
The optical signal of the first Dispersive Devices is stated, or the optical signal by signal modulator modulation amplifies.
At least one embodiment according to the present invention, provides a kind of three-dimensional display apparatus, comprising: light-pulse generator is matched
It is set to transmitting pulsed optical signals；The pulsed optical signals that light-pulse generator issues are transformed into time domain, shape from frequency domain by the first Dispersive Devices
At the pulsed optical signals after time domain broadening；Signal modulator, when the image data of the three-dimension object of pre-display is modulated to described
On the pulsed optical signals of domain broadening；Second optical device, leads to second optical device, and the modulated optical signal is realized
Scanning in Z-direction；First optical device, by first optical device, the pulsed light scanned in the Z-axis direction
Signal realizes the scanning in X-axis and Y direction；Display material, through second optical device and first optical device
Pulsed optical signals after scanning realize the three-dimension object in X-direction, Y direction and Z axis side by the display material
To display.
For example, the light-pulse generator includes infrared pulse light source.
For example, described device further include: clock generator, for generating clock signal.
For example, the clock generator is connect with the light-pulse generator, the light-pulse generator is based on the clock generator
The first clock signal issued carries out the output of the pulsed optical signals.
For example, described device further include: picture coding device, described image code device and the signal modulator connect
It connects, for carrying out image coding to the three-dimension object, generates described image data.
For example, described device further include: clock generator, for generating clock signal, the clock generator with it is described
Picture coding device connection, the second clock signal that described image code device is issued based on the clock generator is to described three
It ties up object and carries out image coding.
For example, the second clock signal and first clock signal synchronization.
For example, first optical device includes two-dimensional space Dispersive Devices, pass through the two-dimensional space Dispersive Devices, institute
State the scanning that modulated optical signal realizes the X-direction and Y direction.
For example, the two-dimensional space Dispersive Devices carry out the scanning of X-direction and Y direction simultaneously.
For example, first optical device includes acousto-optic crsytal, and by the acousto-optic crsytal, the modulated pulsed light
Signal realizes the scanning of the X-direction.
For example, first optical device further includes frequency sweep generator, the radio-frequency signal generator and the acousto-optic crsytal phase
Even, the frequency sweep generator output radiofrequency signal is to the acousto-optic crsytal, so that by the pulsed optical signals of the acousto-optic crsytal
Distribution is on a different frequency.
For example, the tranmitting frequency of the frequency sweep generator is arranged based on the operating frequency range of the acousto-optic crsytal.
For example, the group/cording quantity of the quantity of the radiofrequency signal of the frequency sweep generator and the X-direction of the three-dimension object
It is related.
For example, the tranmitting frequency of the frequency sweep generator is based on the display material to the display result of the three-dimension object
It is modified.
For example, first optical device further includes the second Dispersive Devices, second Dispersive Devices are to by the sound
The pulsed optical signals of luminescent crystal carry out dispersion, and the pulsed optical signals is made to realize the scanning in Y direction.
For example, first optical device further includes the second Dispersive Devices, second Dispersive Devices are to described in Z axis
The pulsed optical signals just scanned up carry out dispersion, realize the pulsed optical signals scanned in the Z-axis direction in Y direction
Scanning.
For example, first optical device includes acousto-optic crsytal, by the acousto-optic crsytal, it is described in the Y-axis direction into
The pulsed optical signals of row scanning realize the scanning of the X-direction.
For example, first optical device further includes frequency sweep generator, the radio-frequency signal generator and the acousto-optic crsytal phase
Even, the frequency sweep generator output radiofrequency signal is to the acousto-optic crsytal, so that by the pulsed optical signals of the acousto-optic crsytal
Distribution is on a different frequency.
For example, the tranmitting frequency of the frequency sweep generator is arranged based on the operating frequency range of the acousto-optic crsytal.
For example, the group/cording quantity of the quantity of the radiofrequency signal of the frequency sweep generator and the X-direction of the three-dimension object
It is related.
For example, the tranmitting frequency of the frequency sweep generator is based on the display material to the display result of the three-dimension object
It is modified.
For example, second optical device includes: galvanometer, the galvanometer carries out periodic vibration, passes through the galvanometer, institute
Modulated pulsed optical signals realization is stated in the scanning of Z-direction.
For example, described device further include: clock generator, for generating clock signal, the clock-signal generator with
The galvanometer connection, the galvanometer are vibrated based on the third clock signal that the clock-signal generator issues.
For example, the third clock signal is synchronous with described first and second clock signal.
For example, first optical device includes acousto-optic crsytal, and by the acousto-optic crsytal, the sweeping in Y direction
The pulsed optical signals retouched realize the scanning of the X-direction.
For example, second optical device includes: galvanometer, the galvanometer carries out periodic vibration, passes through the galvanometer, institute
State the scanning realized by the pulsed optical signals of the first optical device in Z-direction；The scan period of the acousto-optic crsytal is T1,
The vibration period of the galvanometer is T3, wherein number of pixels * T1 of the T3=pre-display object in Z-direction.
For example, the Oscillation Amplitude of the galvanometer is arranged based on the pre-display three-dimension object in the length of Z-direction.
For example, described device further include: reflecting mirror, for the pulsed optical signals of the vibration mirror reflected to be further reflected into
In the display material.
For example, the galvanometer is based on periodic vibration, will be reflected by the pulsed optical signals of first optical device
The different location of the reflecting mirror changes the propagation angle and light path of the optical signal, changes the optical signal in the display
The depth of focus in material.
For example, described device further include: lens subassembly, the lens subassembly are located at the reflecting mirror and the display material
Between, the pulsed optical signals for reflecting the reflecting mirror are focused in the display material.
For example, described device further include: image intensifer, the optical signal for being issued to the light-pulse generator, or pass through institute
The optical signal of the first Dispersive Devices is stated, or the optical signal by signal modulator modulation amplifies.
At least one embodiment according to the present invention, provides a kind of three-dimensional display apparatus, comprising: light-pulse generator is matched
It is set to transmitting pulsed optical signals；The pulsed optical signals that light-pulse generator issues are transformed into time domain, shape from frequency domain by the first Dispersive Devices
At the pulsed optical signals after time domain broadening；Signal modulator, when the image data of the three-dimension object of pre-display is modulated to described
On the pulsed optical signals of domain broadening；Spatial dispersion device, by the spatial dispersion device, the modulated pulsed optical signals
It is scanned in Y direction；Acousto-optic crsytal, by the acousto-optic crsytal, the pulsed light letter being scanned in the Y-axis direction
Number realize X-direction scanning；Galvanometer, by the galvanometer, the pulsed light scanned in X-direction and Y direction
Signal realizes the scanning in Z-direction；Display material, it is described through the spatial dispersion device by the display material, it is described
It is that the pulsed optical signals of acousto-optic crsytal and the galvanometer realize the three-dimension object in X-direction, Y direction and Z axis side
To display.
At least one embodiment according to the present invention, provides a kind of 3 D displaying method, comprising: transmitting pulsed light letter
Number；Pulsed optical signals are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening；By pre-display three-dimension object
Image data is modulated on the pulsed optical signals of the time domain broadening；X-direction and Y-axis are realized to the modulated optical signal
The scanning in direction；To the pulsed optical signals of the realization X-direction and Y direction scanning, the scanning of Z-direction is realized；For X
The pulsed optical signals of axis direction, Y direction and Z-direction scanning realize the three-dimension object in X-direction, Y direction and Z
The display of axis direction.
At least one embodiment according to the present invention, provides a kind of 3 D displaying method, comprising: transmitting pulsed light letter
Number；Pulsed optical signals are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening；By the three-dimension object of pre-display
Image data be modulated on the pulsed optical signals of the time domain broadening；The modulated optical signal is realized in Z-direction
On scanning；The pulsed optical signals scanned in the Z-axis direction are realized with the scanning in X-axis and Y direction；To X-axis,
Pulsed optical signals after Y direction and Z axis scanning realize the three-dimension object in X-direction, Y direction and Z-direction
Display.
At least one embodiment according to the present invention, provides a kind of 3 D displaying method, comprising: transmitting pulsed light letter
Number；The pulsed optical signals that light-pulse generator issues are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening；It will be pre-
The image data of the three-dimension object of display is modulated on the pulsed optical signals of the time domain broadening；The modulated pulsed light letter
It number is scanned in Y direction；The pulsed optical signals being scanned in the Y-axis direction realize the scanning in X-direction；It is described
The pulsed optical signals scanned in X-direction and Y direction realize the scanning in Z-direction；It is described in X-direction, Y-axis side
To and Z-direction on the pulsed optical signals that scan realize the three-dimension object in X-direction, Y direction and Z-direction
Display.
The real Three-dimensional Display of object may be implemented by optical texture in the three-dimensional display apparatus of the embodiment of the present invention.And
And since display speed is fast, tri-dimensional picture not only may be implemented and show, can also realize that 3 D video is shown.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, making below by required in the description to embodiment
Attached drawing is briefly described.The accompanying drawings in the following description is only exemplary embodiment of the present invention.
Fig. 1 shows a kind of structural schematic diagram of three-dimensional display apparatus according to an embodiment of the present invention；
Fig. 2 shows three-dimensional display apparatus another kind structural schematic diagrams according to an embodiment of the present invention；
Fig. 3 shows another structural schematic diagram of three-dimensional display apparatus according to an embodiment of the present invention；
Fig. 4 a shows three-dimensional display apparatus structural schematic diagram according to an embodiment of the present invention；
Fig. 4 b shows three-dimensional display apparatus structural schematic diagram according to an embodiment of the present invention；
Fig. 5 shows three-dimensional display apparatus structural schematic diagram according to an embodiment of the present invention；
Fig. 6 shows a kind of 3 D displaying method according to an embodiment of the present invention；
Fig. 7 shows another 3 D displaying method according to an embodiment of the present invention；
Fig. 8 shows another 3 D displaying method according to an embodiment of the present invention.
Specific embodiment
Hereinafter, by preferred embodiments of the present invention will be described in detail with reference to the annexed drawings.Note that in the specification and drawings
In, there is substantially the same step and element to be denoted by the same reference numerals, and to the repetition solution of these steps and element
Releasing will be omitted.
Fig. 1 shows a kind of structural schematic diagram of three-dimensional display apparatus according to an embodiment of the present invention.It below will be according to Fig. 1
To describe three-dimensional display apparatus according to an embodiment of the present invention.Referring to Fig. 1, three-dimensional display apparatus 100 includes light-pulse generator 110,
First Dispersive Devices 120, signal modulator 130, the first optical device 140, the second optical device 150 and display material 160.
Light-pulse generator 110 is configured as transmitting pulsed optical signals.For example, light-pulse generator 110 can be infrared pulse light
Source, for emitting the infrared pulse optical signal of infrared band.Optionally, the wavelength of the light of infrared pulse light source transmitting is received 980
Rice and tranmitting frequency are at 50M hertz.Light-pulse generator 110 can also emit black light signal.In addition, light-pulse generator 110 can be with
Emit periodical short light pulse.
The pulsed optical signals that light-pulse generator issues are transformed into time domain from frequency domain, form time domain exhibition by the first Dispersive Devices 120
Pulsed optical signals after width.First Dispersive Devices 120 are, for example, time domain Dispersive Devices, e.g. fibre-optical dispersion device.From pulse
The pulsed optical signals that light source 110 issues pass through time domain Dispersive Devices, and frequency spectrum broadens in the time domain.
Signal modulator 130, by the video data modulation of the three-dimension object of pre-display to the pulsed light of the time domain broadening
On signal.For example, obtaining the image data of the three-dimension object of pre-display, which can be bianry image, gray level image or coloured silk
Chromatic graph picture.Image data is, for example, image pixel value matrix.The image pixel value matrix of three-dimension object for example can be three dimensionality
Pixel array.
First optical device 140, leads to first optical device, and the modulated optical signal realizes X-direction and Y-axis
The scanning in direction.For example, the first optical device 140 can be an optical device, it can also be with the combination of multiple devices.
Second optical device 150, by second optical device, the arteries and veins for realizing X-direction and Y direction scanning
Pulsed light signal realizes the scanning of Z-direction.Second optical device 150 is also possible to the group of an optical device or multiple devices
It closes.
Display material 160, the pulsed light letter after first optical device and second optic structure scanning
Number realize the three-dimension object in the display of X-direction, Y direction and Z-direction by the up-conversion.Show material
Material for example can be up-conversion 160.Up-conversion 160 can be a three-dimensional solid-state material, e.g. square
Or cuboid, the performance of all directions is identical or approximately uniform, and has certain transparency.Up-conversion 160 is for example
It can be and mix bait fluoride glass.Up-conversion is, for example, NaYF4:Yb3+/Tm3+.When the material is swashed by 980 nano-photons
When hair, sensitized ions can absorb 980 nano-photons and carry out energy transmission, thus from ground state transition to different intermediate excitations
In state, emit corresponding wavelength of fluorescence signal.
Vision signal can be mapped in spatial domain by signal modulator modulation by the embodiment of the present invention in the time domain and finally
It goes up and scans.The stereo-picture of various things not only can be quickly reproduced as a result, moreover, because display speed is fast, can also be shown
Show smooth stereoscopic video images.
Fig. 2 shows three-dimensional display apparatus another kind structural schematic diagrams according to an embodiment of the present invention.Referring to fig. 2, according to
An example of the invention, three-dimensional display apparatus can also include clock generator 170, for generating clock signal.For example, when
Clock generator 170 is connect with light-pulse generator 110, and light-pulse generator is carried out based on the first clock signal that clock generator 170 issues
The output of pulsed optical signals.
Referring to fig. 2, an example according to the present invention, three-dimensional display apparatus can also include picture coding device 180, figure
As code device 180 can be connect with signal modulator 130.Picture coding device 180 can carry out pre-display three-dimension object
Image coding generates image data, and be sent to signal modulator 130 in encoded.Signal modulator 130 is based on from image
The received image data of code device 180 carries out signal modulation.For example, being modulated to image data by the first Dispersive Devices
On pulsed optical signals after 120 dispersions.
Referring to fig. 2, an example according to the present invention, clock generator 170 can also connect with picture coding device 180
It connects, picture coding device carries out Video coding to three-dimension object based on the second clock signal that clock generator 170 issues.Example
Such as, second clock signal can be synchronous with the first clock signal.In this way, the image information of coding is synchronous with light pulse signal, it can
To intensity coding is carried out in each light pulse, make to carry correct image information in each pulse.
Fig. 3 shows another structural schematic diagram of three-dimensional display apparatus according to an embodiment of the present invention.Referring to Fig. 3, according to
One embodiment of the present of invention, the first optical device 140 can be two-dimensional space Dispersive Devices.Pass through two-dimensional space Dispersive Devices
140, modulated optical signal realizes the scanning of X-direction and Y direction.Two-dimensional space Dispersive Devices 140 are, for example, a device
Part.It is also possible to the composite structure of acousto-optic crsytal and diffraction grating.An example according to the present invention, two-dimensional space Dispersive Devices
140 can carry out the scanning of X-direction and Y direction simultaneously, further improve scanning speed.Enter space in pulsed light to pass
After broadcasting, it is introduced into the acousto-optic crsytal for being applied with modulation voltage, subsequently into diffraction grating, is loaded with frequency cycle on acousto-optic crsytal
The acoustic signals of variation, so that the deflection that generating period changes in X-Z plane of lightray propagation direction, completes optical signal
In the scanning of X axis.Diffraction grating makes when different frequency component is propagated in Y-Z plane in optical signal with different deflection
Angle completes optical signal in the scanning of Y-axis.
According to one embodiment of present invention, the first optical device 140 also may include multiple components.Fig. 4 a shows root
According to another structural schematic diagram of the three-dimensional display apparatus of the embodiment of the present invention.A referring to fig. 4, the first optical device 140 include acousto-optic
Crystal 141 and the second Dispersive Devices 142.Second Dispersive Devices 142 are, for example, spatial dispersion device.By acousto-optic crsytal 141, adjust
Pulsed optical signals after system realize the scanning of X-direction.In addition, the optical signal in X-direction scanning continues through the second dispersion
After device 142, the second 142 pairs of Dispersive Devices carry out dispersion by the pulsed optical signals of acousto-optic crsytal, make pulsed optical signals into one
Step realizes the scanning in Y direction.
In addition, modulated pulsed optical signals can also first carry out the scanning of Y direction, then carry out the scanning of X-direction.
Fig. 4 b shows another structural schematic diagram of three-dimensional display apparatus according to an embodiment of the present invention.B referring to fig. 4, through signal modulation
The modulated pulsed optical signals of device 130 first pass through the second Dispersive Devices 142, and the second Dispersive Devices modulate signal modulator 130
Pulsed optical signals afterwards first carry out dispersion, and pulsed optical signals is made to realize the scanning in Y direction.Later, it carries out in the Y-axis direction
The pulsed optical signals of scanning are passing through acousto-optic crsytal 141, realize the scanning of X-direction.Wherein, the second Dispersive Devices are, for example, sky
Between Dispersive Devices, such as diffraction grating.
In addition, an example according to the present invention, the first optical device 140 can also include frequency sweep generator 143, frequency sweep
Generator 143 can be connected with acousto-optic crsytal 141, and frequency sweep generator 143 exports radiofrequency signal to acousto-optic crsytal 141, so that through
Cross the pulsed optical signals distribution of acousto-optic crsytal 141 on a different frequency.In order to enable the swept frequency and acousto-optic of frequency sweep generator
Crystal is adapted, for example, the tranmitting frequency of frequency sweep generator 143 can be arranged based on the operating frequency range of acousto-optic crsytal.
In addition, in one example, the radiofrequency signal (f of frequency sweep generator 1431, f2……fn) quantity can be with the three of pre-display
The group/cording quantity for tieing up the X-direction of object is related.For example, if the three-dimension object of pre-display is the object of 100*200*300, it should
Object is 100 in the number of pixels of X-direction, then the number for the radiofrequency signal that frequency sweep generator 143 issues is also 100,
That is n=100.
In addition, an example according to the present invention, the tranmitting frequency of frequency sweep generator 143 are also based on display material
The display result of 160 pairs of three-dimension objects is modified.For example, frequency sweep generator 143 can first set a default tranmitting frequency,
And monitor under the tranmitting frequency, whether the display result of three-dimension object meets the requirements, and when undesirable, is existed according to optical signal
The length of X-direction or offset adjust the frequency bandwidth or central wavelength of frequency sweep generator 143 in up-conversion 160.
In the above-described embodiments, acousto-optic crsytal 141 is used for optical signal in the scanning of X-direction, and the second Dispersive Devices are used
In to optical signal Y direction carry out dispersion.And those skilled in the art will be seen that, can also be will using the second Dispersive Devices
Optical signal is in X-direction dispersion, and by using acousto-optic crsytal 141, optical signal is scanned in Y direction.
Fig. 5 shows three-dimensional display apparatus structural schematic diagram according to an embodiment of the present invention.Referring to Fig. 5, according to the present invention
One embodiment, the second optical device 150 may include galvanometer 151, and galvanometer can carry out periodic vibration, by galvanometer 151,
The scanning in Z-direction may be implemented by the pulsed optical signals of the first optical device 140.
Referring to Fig. 5, clock-signal generator 170 can also be connect with galvanometer 151, and galvanometer receives clock-signal generator
The 170 third clock signals issued, and vibrated based on third clock signal.In one example, third clock signal with
The first clock signal and second clock signal of front are synchronous.For example, if the three-dimension object of pre-display is 100*200*300
Object, the object Z-direction number of pixels be 300, then whenever optical signal complete 300 X-Y planes scanning
When, galvanometer 151 then can just complete the scanning of a Z-direction, so that the scanning result in three directions be made to constitute three-dimensional figure
Picture.
In an example it is assumed that the scan period of acousto-optic crsytal 141 is T1, the vibration period of galvanometer 151 is T3, that
, in order to guarantee more rapidly and accurately to carry out three dimensional searches to the image data of three-dimension object, when may exist following
Between relationship, T3=pre-display object Z-direction number of pixels * T1.For example, if the size of the three-dimension object of pre-display is 100*
The object of 200*300, which is 300 in the number of pixels of Z-direction, then T3=300*T1.
In addition, in one example, the Oscillation Amplitude of galvanometer 151 is arranged based on three-dimension object in the length of Z-direction.
For example, the size of Oscillation Amplitude can guarantee to complete three-dimension object in the scanning of the length of Z-direction.
In addition, in one example, the second optical device 150 can also include reflecting mirror 152, and reflecting mirror 152 is used for will
The pulsed optical signals further progress reflection that galvanometer 151 reflects, for example, making being transferred in up-conversion 160 of reflected light.Vibration
Mirror 151 is based on periodic vibration, the different location of reflecting mirror will be reflected by the pulsed optical signals of the first optical device 140,
Change the propagation angle and light path of optical signal, changes the depth of focus of the optical signal in up-conversion.
In addition, in one example, the second optical device 150 can also include lens subassembly 153, lens subassembly 153
Between reflecting mirror 152 and up-conversion 160, the pulsed optical signals for reflecting reflecting mirror carry out in up-conversion
It focuses.In this way, completing completion three-dimensional by being loaded with the 3-D scanning of the infrared light focus point of picture signal in up-conversion
The excitation of visible light pixel.
Since the scanning speed of the galvanometer 151 of limitation system refresh frequency can achieve kHz magnitude, higher than the dynamic of human eye
Vision signal can be mapped in spatial domain simultaneously by refresh rate, the system in the time domain and finally by signal modulator modulation
Scanning.So far, corresponding device can not only reproduce the stereo-picture of various things, can also show smooth three-dimensional video-frequency figure
Picture.
In addition, in one example, since in propagation, signal can weaken light on the way, three-dimensional display apparatus 100 may be used also
To include image intensifer, for amplifying processing to the optical signal propagated on the way.For example, the light issued to light-pulse generator 110
Signal, or amplified by the optical signal of the first Dispersive Devices 120, or by the optical signal that signal modulator modulates 130.
The real Three-dimensional Display of object may be implemented by optical texture in the three-dimensional display apparatus of the embodiment of the present invention.And
And since display speed is fast, tri-dimensional picture not only may be implemented and show, can also realize that 3 D video is shown.
Three-dimensional display apparatus according to an embodiment of the present invention is described above, is described further below and implements according to the present invention
The 3 D displaying method of example, 3 D displaying method is corresponding with the three-dimensional display apparatus of previous embodiment, in order to illustrate the succinct of book,
It is only briefly described below, specific embodiment may refer to the three-dimensional display apparatus of previous embodiment.Fig. 6 is shown according to this
The 3 D displaying method 600 of inventive embodiments, referring to Fig. 6,3 D displaying method 600 includes the following steps S601-S606.
In step s 601, emit pulsed optical signals；
In step S602, pulsed optical signals are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening；
In step S603, the image data of pre-display three-dimension object is modulated to the pulsed optical signals of the time domain broadening
On；
In step s 604, the scanning of X-direction and Y direction is realized to the modulated optical signal；
In step s 605, to the pulsed optical signals of the realization X-direction and Y direction scanning, Z-direction is realized
Scanning；
In step S606, the three-dimensional is realized for the pulsed optical signals of X-direction, Y direction and Z-direction scanning
Display of the object in X-direction, Y direction and Z-direction.
Fig. 7 shows another 3 D displaying method 700 according to an embodiment of the present invention, referring to Fig. 7,3 D displaying method
700 include the following steps S701-S706.
In step s 701, emit pulsed optical signals.
In step S702, pulsed optical signals are transformed into time domain from frequency domain, the pulsed optical signals after forming time domain broadening.
In step S703, the pulsed light that the image data of the three-dimension object of pre-display is modulated to the time domain broadening is believed
On number.
In step S704, scanning in the Z-axis direction is realized to the modulated optical signal.
In step S705, the pulsed optical signals that scan in the Z-axis direction are realized in X-axis and Y direction
Scanning.
In step S706, the three-dimension object is realized to the pulsed optical signals after the scanning of X-axis, Y direction and Z axis
In the display of X-direction, Y direction and Z-direction.
Fig. 8 shows another 3 D displaying method 800 according to an embodiment of the present invention, referring to Fig. 8,3 D displaying method
800 include the following steps S801-S807.
In step S801, emit pulsed optical signals.
In step S802, the pulsed optical signals that light-pulse generator issues are transformed into time domain from frequency domain, form time domain broadening
Pulsed optical signals afterwards.
In step S803, the image data of pre-display three-dimension object is modulated to the pulsed optical signals of the time domain broadening
On.
In step S804, the modulated pulsed optical signals are scanned in Y direction.
In step S805, the pulsed optical signals being scanned in the Y-axis direction realize the scanning in X-direction.
In step S806, the pulsed optical signals scanned in X-direction and Y direction are realized in Z-direction
Scanning.
In step S807, the pulsed optical signals scanned in X-direction, Y direction and Z-direction realize institute
Three-dimension object is stated in the display of X-direction, Y direction and Z-direction.
The real Three-dimensional Display of object may be implemented in the 3 D displaying method of the embodiment of the present invention.And due to display speed
Degree is fast, and tri-dimensional picture not only may be implemented and show, can also realize that 3 D video is shown.
Various repair is carried out to the present invention it should be appreciated by those skilled in the art that can be dependent on design requirement and other factors
Change, combine, partially combining and replacing, as long as they are in the range of the appended claims and its equivalent.
Claims (10)
1. a kind of three-dimensional display apparatus, comprising:
Light-pulse generator is configured as transmitting pulsed optical signals；
The pulsed optical signals that light-pulse generator issues are transformed into time domain from frequency domain, after forming time domain broadening by the first Dispersive Devices
Pulsed optical signals；
The image data of pre-display three-dimension object is modulated on the pulsed optical signals of the time domain broadening by signal modulator；
First optical device, leads to first optical device, and the modulated optical signal realizes X-direction and Y direction
Scanning；
Second optical device, by second optical device, the pulsed light letter for realizing X-direction and Y direction scanning
Number, realize the scanning of Z-direction；
Display material, the pulsed optical signals after first optical device and second optics scan pass through described aobvious
Show that material realizes the three-dimension object in the display of X-direction, Y direction and Z-direction.
2. the apparatus according to claim 1, wherein the light-pulse generator includes infrared pulse light source.
3. the apparatus according to claim 1, wherein described device further include: clock generator, for generating clock letter
Number.
4. device according to claim 3, wherein the clock generator is connect with the light-pulse generator, the pulse
Light source carries out the output of the pulsed optical signals based on the first clock signal that the clock generator issues.
5. the apparatus according to claim 1, wherein described device further include: picture coding device, described image coding dress
It sets and is connect with the signal modulator, for carrying out image coding to the three-dimension object, generate described image data.
6. device according to claim 5, wherein described device further include: clock generator, for generating clock letter
Number, the clock generator is connect with described image code device, and described image code device is sent out based on the clock generator
Second clock signal out carries out image coding to the three-dimension object.
7. device according to claim 6, the second clock signal and first clock signal synchronization.
8. the apparatus according to claim 1, first optical device includes two-dimensional space Dispersive Devices, passes through described two
Dimension space Dispersive Devices, the modulated optical signal realize the scanning of the X-direction and Y direction.
9. device according to claim 8, wherein the two-dimensional space Dispersive Devices carry out X-direction and Y-axis side simultaneously
To scanning.
10. the apparatus according to claim 1, wherein first optical device includes acousto-optic crsytal, passes through the acousto-optic
Crystal, the modulated pulsed optical signals realize the scanning of the X-direction.
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