CN110865467B - Interactive three-dimensional display device based on laser induction and control method thereof - Google Patents
Interactive three-dimensional display device based on laser induction and control method thereof Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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Abstract
The invention provides a laser induction-based interactive three-dimensional display device and a control method thereof, wherein the device comprises an upper computer, a pulse laser, a light modulation device, a 3D dynamic focusing system and an interactive system; the 3D dynamic focusing system comprises a zoom lens, a scanning system and a field lens/objective lens; the input end of the upper computer is connected with the interactive system; the output end of the upper computer is respectively connected with the pulse laser, the light modulation device, the zoom lens and the scanning system; the interactive system is used for identifying the position and the action information of the human body, and transmitting an instruction to the upper computer according to an identification result, and the upper computer adjusts the 3D dynamic focusing system through the pulse laser, the light modulation device and the 3D dynamic focusing system, so that the viewing angle is optimized and interaction is carried out. The invention can realize the three-dimensional display and interaction of the free space, greatly improves the three-dimensional display effect and has more advantages in system safety and cost.
Description
Technical Field
The invention relates to the technical field of true three-dimensional display technology, laser beam modulation technology, projection technology and automatic control, in particular to an interactive three-dimensional display device based on laser induction and a control method thereof.
Background
The existing three-dimensional display technology can be generally divided into a stereoscopic technology, an auto-stereoscopic three-dimensional display technology, a holographic display technology and a volumetric three-dimensional display technology. The stereoscopic vision technology and the autostereoscopic three-dimensional display technology need special equipment, the observation range is limited, only psychological depth of field can be provided, and physical depth of field cannot be provided. The display quality and the viewing angle of the current computer-generated holographic display technology are greatly limited due to the limitation of the spatial light modulation device.
The three-dimensional display technology can realize the reproduction of image information in a three-dimensional space, and can realize that any plurality of observers directly observe a three-dimensional object from any angle without any auxiliary equipment. The existing three-dimensional display technology of the volume in the free space can be divided into the following technologies: laser induced plasma display, stereoscopic display based on photo-phoretic trapping, improved air display, acoustic levitation display, and the like. The stereoscopic display technology based on the optical electrophoresis capture has high sensitivity to air flow and limited application scenes because the light beam is used to capture the movement of particles in free space. The display effect of the improved air display and the sound suspension display is too rough.
The laser induced plasma display technology is mature, and related equipment is available in the laboratory of japan. At present, imaging, touch control and application related patents (a three-dimensional display imaging device and method for laser-excited air ionization, a touch control system and a touch control detection method for laser-ionized air imaging, and a device for forming a laser-ionized air type protective barrier) also exist in China. However, due to the limitation of repetition frequency and power of the pulse laser, the display resolution of the laser-induced plasma display technology is low and the display area is small.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an interactive three-dimensional display device based on laser induction and a control method thereof, so as to realize three-dimensional display and interaction in a free space and improve the three-dimensional display effect. The technical scheme of the invention is as follows:
in a first aspect, the invention provides a laser-induced interactive three-dimensional display device, which comprises an upper computer, a pulse laser, a light modulation device, a 3D dynamic focusing system and an interactive system; the 3D dynamic focusing system comprises a zoom lens, a scanning system and a field lens/objective lens; the input end of the upper computer is connected with the interactive system; the output end of the upper computer is respectively connected with the pulse laser, the light modulation device, the zoom lens and the scanning system; the interactive system is used for identifying the position and the action information of the human body, and transmitting an instruction to the upper computer according to an identification result, and the upper computer adjusts the 3D dynamic focusing system through the pulse laser, the light modulation device and the 3D dynamic focusing system, so that the viewing angle is optimized and interaction is carried out.
Further, the pulse width of the pulsed laser is less than 100 ns.
Further, the light modulation device comprises a lens system and a light modulation device, wherein the lens system is used for expanding and collimating the light beam and modulating the diameter of the light beam, and the light modulation device comprises a digital micromirror array, a spatial light modulator, a deformable mirror or a phase plate.
Further, the scanning system comprises two galvanometers or a lens and two galvanometers or a biaxial mirror, and the scanning system is used for controlling the light beam to scan an XY plane.
Further, the interactive system comprises a laser receiving and analyzing device and a somatosensory interactive device, and the working modes of the interactive system are as follows: touch mode, body sensing mode, touch + body sensing mode.
Furthermore, the interactive three-dimensional display device further comprises a detection device, the detection device comprises an image acquisition device, a temperature measurement device and analysis software, and the image acquisition device, the temperature measurement device and the analysis software are respectively connected with the input end of the upper computer.
Furthermore, the interactive three-dimensional display device further comprises a cooling system, wherein the cooling system comprises a water cooling module and an air cooling module, and the cooling system is connected with the output end of the upper computer.
Furthermore, the interactive three-dimensional display device further comprises an aerosol generator and a transparent shell, the aerosol generator and the transparent shell are arranged around the three-dimensional display area, and the aerosol generator is connected with the output end of the upper computer.
In a second aspect, the present invention provides a method for controlling a laser-induced interactive three-dimensional display device, comprising the following steps:
s1, inputting an image to be displayed to an upper computer by a user, processing and analyzing the input image by the upper computer, and determining working parameters of a pulse laser, a modulation method of a light modulation device and a scanning path and scanning speed of a 3D dynamic focusing system;
s2, controlling a pulse laser to emit pulse laser by a user through an upper computer, controlling a light modulation device to modulate a light beam, generating a plurality of focuses after the modulated light beam passes through a 3D dynamic focusing system, and controlling the light modulation device to adjust the relative positions of the focuses by the user through the upper computer;
s3, after the light beam enters the 3D dynamic focusing system, a user controls the zoom lens to scan in the Z direction and controls the scanning system to scan in the XY direction through the upper computer, after the light beam is focused by the field lens/objective lens, the focus is rapidly scanned in the display area, air at the focus is ionized, and the light spot formed by the ionized air forms an image to be displayed;
s4, in the process that the image is displayed in the display area, a user can recognize the position information of the human body through the interactive system and transmit an instruction to the upper computer according to the recognition result, and the upper computer adjusts the quality of the displayed image by controlling the light modulation device and the 3D dynamic focusing system to realize the best viewing experience; meanwhile, the upper computer determines the working mode of the interactive system according to the working parameters of the pulse laser, then the interactive system identifies and analyzes the collected touch and/or somatosensory instructions and sends the result to the upper computer, and a user adjusts the display information through the upper computer to control the light modulation device and the 3D dynamic focusing system and responds to the interactive instructions.
Further, the specific process of determining the working mode of the interactive system by the upper computer according to the working parameters of the pulse laser in the step S4 is as follows: if the pulse width of the pulse laser is in the nanosecond order, the energy of ionized air plasma is too high, and the air plasma is too harmful to human bodies, so that touch operation cannot be performed, and only somatosensory interaction can be performed; if the pulse width is femtosecond or less, the human body can directly contact the ionized air plasma, and touch operation or body sensing operation can be performed at the moment.
Further, when the interactive three-dimensional display device further includes a detection device, the control method further includes step S5: in the process of displaying the image in the display area, a user can acquire and analyze the displayed image through the detection device, then an analysis result is sent to the upper computer, and the upper computer adjusts the pulse laser, the light modulation device and the 3D dynamic focusing system according to the analysis result, so that the display quality is optimized.
According to the technical scheme, the pulse laser is focused in the air, and when the peak light intensity of the focus exceeds the threshold value of the ionized plasma, the air at the focus is ionized to emit light, so that observation can be performed; when the 3D dynamic focusing system rapidly scans the focal point of the light beam in a three-dimensional space, a stereoscopic image can be observed in the space according to a visual residual effect; the light modulation device can rapidly modulate the light beam emitted by the pulse laser, so that the light beam has a plurality of focuses after being focused, the relative positions of the focuses can be controlled by the light modulator, and the plurality of focuses can be used for scanning in the working process of the display system, so that the resolution of an image is greatly increased; the 3D dynamic focusing system comprises a zoom lens, a scanning system and a field lens/objective lens, when the zoom lens, the scanning system and the field lens are used, the scanning of a larger range in a three-dimensional space can be realized, when the zoom lens, the scanning system and the objective lens are used, the scanning of a small range, a high speed and a high resolution in the three-dimensional space can be realized, and if the scanning range needs to be enlarged when the objective lens is selected, the objective lens with a large caliber needs to be selected; the 3D dynamic focusing system can also be formed by selecting components in a scanning system and a field lens/objective lens according to actual needs; the invention can also set up the aerosol generator around the display area, spray into the aerosol particle in the display area, when there are aerosol particles in the display area, the ionization plasma threshold of the air will obviously reduce, the power of the laser apparatus required for ionization will also reduce, under the same condition, can use the modulating device of light to produce more focuses to ionize, obtain higher resolution; if set up transparent casing around the display area then can protect the display area, when the pulse width of the pulse laser that uses is great (nanosecond level), plasma is great to the harm of human body, consequently can not direct touch, needs to protect the display area, prevents the mistake and touches. When the pulse width of the used pulse laser is small (femtosecond magnitude or less than femtosecond magnitude), the plasma has little harm to human bodies, so that touch can be performed, and a transparent shell can not be used for protection; in addition, the transparent shell can be filled with specially mixed gas, and different gases are ionized by a plurality of lasers with different wavelengths, so that different colors are emitted to realize color imaging. The interactive three-dimensional display device can also comprise a detection device which collects and analyzes the temperature and the image of the display area and then adjusts the system according to the analysis result by the upper computer to realize the optimal display effect; in the display process, the interactive system detects the position of a human body, and adjusts the direction, brightness, resolution and the like of a displayed image through the upper computer, so that the optimal viewing experience is realized. Meanwhile, the upper computer determines the working mode of the interactive system according to the working parameters of the system, then the interactive system identifies and analyzes the collected touch and somatosensory instructions and sends the result to the upper computer, and the upper computer controls the light modulation device, the 3D dynamic focusing system and the like to adjust the display information and respond to the interactive instructions.
Drawings
FIG. 1 is a schematic diagram of an interactive three-dimensional display device according to the present invention;
FIG. 2 is a schematic diagram of another structure of the interactive three-dimensional display device of the present invention;
in fig. 1 and 2, 1-input, 2-upper computer, 3-pulse laser, 4-optical modulation device, 5-3D dynamic focusing system, 6-zoom lens, 7-scanning system, 8-field lens/objective lens, 9-display area, 10-aerosol generator, 11-transparent shell, 12-interactive system, 13-detection device.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
As shown in fig. 1, the specific embodiment of the present invention discloses a laser-induced interactive three-dimensional display device, which includes an upper computer 2, a pulse laser 3, a light modulation device 4, a 3D dynamic focusing system 5, a cooling system 14, an interactive system 12, and a detection device 13. Input 1 in fig. 1 is a three-dimensional image or video file that a user controls a computer to input into an upper computer.
In the present embodiment, the pulse laser 3 is a femtosecond laser with adjustable pulse width, repetition frequency and power, and the pulse width is less than 100 ns.
The light modulation device 4 includes a lens system for expanding and collimating a light beam and modulating a diameter of the light beam, and a light modulation device including a digital micromirror array (DMD), a Spatial Light Modulator (SLM), a deformable mirror, or a phase plate. In this embodiment, the optical modulation device is a DMD, a lens system before the DMD is used to expand and collimate a light beam emitted from the pulse laser, the DMD can focus the light beam after modulating the light beam to generate a plurality of focuses, and the lens system after the DMD is used to adjust the size of the light beam to adapt to the requirements of the 3D scanning system.
The 3D dynamic focusing system 5 is used to control the focal point of the light beam to perform rapid scanning in space, and at the same time of scanning, the DMD also performs rapid modulation on the relative position between the focal points of the light beam according to the displayed image, so that the resolution of the displayed image is greatly increased. The 3D dynamic focus system 5 comprises a zoom lens 6, a scanning system 7 and a field lens 8. The 3D dynamic focusing system 5 is arranged behind the light modulation device 4, and the light beam enters the 3D dynamic focusing system 5 after being modulated by the light modulation device 4. The zoom lens 6 can realize scanning in the Z direction. The scanning system 7 includes two galvanometers or a lens + two galvanometers or a biaxial mirror, and the scanning system 7 in this embodiment includes two galvanometers and is configured to control the light beam to scan an XY plane. The field lens/objective lens 8 adopts an F-Theta lens, and the scanning system 7 is combined with the F-Theta lens 8 to control the focus of the light beam to scan on an XY plane.
The input end of the upper computer 2 is connected with the interactive system 12 and the detection device 13; the output end of the upper computer 2 is respectively connected with the cooling system 14, the pulse laser/3, the light modulation device 4, the zoom lens 6 and the scanning system 7.
The interactive system 12 comprises a laser receiving and analyzing device and a somatosensory interactive device, and the working modes of the interactive system are as follows: touch mode, body sensing mode, touch + body sensing mode. The interaction system 12 is used for identifying the position and action information of a human body and transmitting an instruction to the upper computer 2 according to an identification result, and the upper computer 2 adjusts the pulse laser 3, the light modulation device 4 and the 3D dynamic focusing system 5 so as to optimize a viewing angle and perform interaction. In this embodiment, the pulse laser is a femtosecond laser, and the interactive system can work in a touch + somatosensory mode.
The detection device 13 comprises an image acquisition device, a temperature measurement device and analysis software, wherein the image acquisition device, the temperature measurement device and the analysis software are respectively connected with the input end of the upper computer.
The cooling system 14 comprises a water cooling module and an air cooling module, and the cooling system 14 is connected with the output end of the upper computer 2. For cooling the pulsed laser 3, the light modulation device 4, the 3D dynamic focusing system 5 and the display area 9.
The interactive three-dimensional display device further comprises an aerosol generator 10 and a transparent shell 11, wherein the aerosol generator 10 and the transparent shell 11 are arranged around the three-dimensional display area 9, and the aerosol generator 10 is connected with the output end of the upper computer 2. As shown in fig. 2.
Example 1
The embodiment provides a control method of an interactive three-dimensional display device based on laser induction, which comprises the following steps:
s1, inputting an image to be displayed to an upper computer by a user, processing and analyzing the input image by the upper computer by taking a stereo portrait as an example, and determining working parameters of a pulse laser, a modulation method of a light modulation device and a scanning path and a scanning speed of a 3D dynamic focusing system;
s2, controlling a pulse laser to emit pulse laser by a user through an upper computer, controlling a light modulation device to modulate a light beam, generating a plurality of focuses after the modulated light beam passes through a 3D dynamic focusing system, and controlling the light modulation device to adjust the relative positions of the focuses by the user through the upper computer;
s3, enabling the light beam to enter a 3D dynamic focusing system after passing through a light modulation device, enabling a user to control a zoom lens to scan in the Z direction and control a scanning system to scan in the XY direction through an upper computer, enabling the light beam to pass through an F-Theta lens, enabling a focus to rapidly scan in a display area, enabling air at the focus to be ionized, and enabling light spots formed by ionized air to form an image to be displayed;
s4, in the process that the image is displayed in the display area, a user can recognize the position information of the human body through the interactive system and transmit an instruction to the upper computer according to the recognition result, and the upper computer adjusts the direction, the brightness, the resolution and the like of the displayed image by controlling the light modulation device and the 3D dynamic focusing system to realize the best viewing experience; meanwhile, the upper computer determines the working mode of the interactive system according to the working parameters of the pulse laser, the pulse laser of the embodiment is a femtosecond laser, the pulse width of the femtosecond laser is in a femtosecond magnitude, a human body can directly contact ionized air plasma, and touch operation and somatosensory operation can be performed at the moment; then, the interactive system identifies and analyzes the acquired touch and/or somatosensory instructions and sends the results to an upper computer, and a user controls the light modulation device, the 3D dynamic focusing system and the like to adjust the display information through the upper computer and responds to the interactive instructions;
s5, in the process that the image is displayed in the display area, the user can acquire and analyze the displayed image through the detection device, then the analysis result is sent to the upper computer, and the upper computer adjusts the pulse laser, the light modulation device, the 3D dynamic focusing system and the aerosol generator according to the analysis result, so that the displayed brightness, resolution and the like are optimized.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A laser induction-based interactive three-dimensional display device is characterized by comprising an upper computer, a pulse laser, a light modulation device, a 3D dynamic focusing system and an interactive system; the 3D dynamic focusing system comprises a zoom lens, a scanning system and a field lens/objective lens; the input end of the upper computer is connected with the interactive system; the output end of the upper computer is respectively connected with the pulse laser, the light modulation device, the zoom lens and the scanning system; the interactive system is used for identifying the position and action information of a human body and transmitting an instruction to the upper computer according to an identification result, the upper computer identifies and analyzes the acquired touch and/or somatosensory instruction by the pulse laser, the light modulation device and the 3D dynamic focusing system, further optimizes the viewing angle and determines the working mode of the interactive system according to the working parameters of the pulse laser, the interactive system sends the generated interactive instruction to the upper computer, and the upper computer controls the light modulation device and the 3D dynamic focusing system to adjust the display information according to the interactive instruction so as to respond to the interactive instruction; the interactive system comprises a laser receiving and analyzing device and a somatosensory interactive device, and the working modes of the interactive system are as follows: a touch mode, a somatosensory mode and a touch + somatosensory mode; but three-dimensional display device of interactive body still includes aerosol generator and transparent casing, aerosol generator with transparent casing sets up around the three-dimensional display area, aerosol generator with the output of host computer is connected.
2. The device of claim 1, wherein the light modulation device comprises a lens system and a light modulation device, the lens system is used for expanding and collimating the light beam and modulating the diameter of the light beam, and the light modulation device comprises a digital micromirror array, a spatial light modulator, an anamorphic mirror or a phase plate.
3. The device as claimed in claim 1, wherein the scanning system comprises two galvanometers or a lens + two galvanometers or a biaxial mirror, and the scanning system is used for controlling the light beam to scan XY plane.
4. The laser induction-based interactive three-dimensional display device is characterized by further comprising a detection device, wherein the detection device comprises an image acquisition device, a temperature measurement device and analysis software, and the image acquisition device, the temperature measurement device and the analysis software are respectively connected with an input end of the upper computer.
5. The laser induction based interactive three-dimensional display device as claimed in claim 1 or 4, further comprising a cooling system, wherein the cooling system comprises a water cooling module and a air cooling module, and the cooling system is connected with the output end of the upper computer.
6. The method for controlling the interactive three-dimensional display device based on laser induction as claimed in claim 1, characterized by comprising the following steps:
s1, inputting an image to be displayed to an upper computer by a user, processing and analyzing the input image by the upper computer, and determining working parameters of a pulse laser, a modulation method of a light modulation device and a scanning path and scanning speed of a 3D dynamic focusing system;
s2, controlling a pulse laser to emit pulse laser by a user through an upper computer, controlling a light modulation device to modulate a light beam, generating a plurality of focuses after the modulated light beam passes through a 3D dynamic focusing system, and controlling the light modulation device to adjust the relative positions of the focuses by the user through the upper computer;
s3, after the light beam enters the 3D dynamic focusing system, a user controls the zoom lens to scan in the Z direction and controls the scanning system to scan in the XY direction through the upper computer, after the light beam is focused by the field lens/objective lens, the focus is rapidly scanned in the display area, air at the focus is ionized, and the light spot formed by the ionized air forms an image to be displayed;
s4, in the process that the image is displayed in the display area, a user can recognize the position information of the human body through the interactive system and transmit an instruction to the upper computer according to the recognition result, and the upper computer adjusts the quality of the displayed image by controlling the light modulation device and the 3D dynamic focusing system to realize the best viewing experience; meanwhile, the upper computer determines the working mode of the interactive system according to the working parameters of the pulse laser, then the interactive system identifies and analyzes the collected touch and/or somatosensory instructions and sends the generated interactive instructions to the upper computer, and the upper computer controls the light modulation device and the 3D dynamic focusing system to adjust the display information according to the interactive instructions so as to respond to the interactive instructions; the interactive system comprises a laser receiving and analyzing device and a somatosensory interactive device, and the working modes of the interactive system are as follows: a touch mode, a somatosensory mode and a touch + somatosensory mode; but three-dimensional display device of interactive body still includes aerosol generator and transparent casing, aerosol generator with transparent casing sets up around the three-dimensional display area, aerosol generator with the output of host computer is connected.
7. The control method of the interactive three-dimensional display device based on the laser induction as claimed in claim 6, wherein the specific process of the upper computer determining the working mode of the interactive system according to the working parameters of the pulse laser in the step S4 is as follows: if the pulse width of the pulse laser is in the nanosecond order, the energy of ionized air plasma is too high, the damage to human bodies is too large, and only somatosensory interaction can be carried out; if the pulse width is femtosecond or less, the human body can directly contact the ionized air plasma, and touch operation and body sensing operation can be performed at the moment.
8. The method for controlling the interactive three-dimensional display device based on laser induction according to claim 6, wherein when the interactive three-dimensional display device further comprises a detection device, the method further comprises step S5: in the process of displaying the image in the display area, a user can acquire and analyze the displayed image through the detection device, then an analysis result is sent to the upper computer, and the upper computer adjusts the pulse laser, the light modulation device and the 3D dynamic focusing system according to the analysis result, so that the display quality is optimized.
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| PCT/CN2018/102651 WO2020034253A1 (en) | 2018-08-17 | 2018-08-28 | Laser-induced interactive volumetric 3d display device and control method therefor |
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