CN112946912A - Naked eye 3D display device capable of achieving lossless super-definition resolution and being watched by multiple persons simultaneously - Google Patents
Naked eye 3D display device capable of achieving lossless super-definition resolution and being watched by multiple persons simultaneously Download PDFInfo
- Publication number
- CN112946912A CN112946912A CN202110200345.1A CN202110200345A CN112946912A CN 112946912 A CN112946912 A CN 112946912A CN 202110200345 A CN202110200345 A CN 202110200345A CN 112946912 A CN112946912 A CN 112946912A
- Authority
- CN
- China
- Prior art keywords
- backlight
- different
- eye
- depth
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention relates to a large-depth naked eye 3D display device which has no damage to super-clear resolution and can be watched by multiple persons simultaneously. The device is based on U type form backlight unit, enlarges horizontal viewing range, realizes that many people of TV watch simultaneously, depth expand, low scintillation. The method for realizing the simultaneous watching of the 3D images by multiple people comprises the steps that when a display module displays a left eye image, LEDs corresponding to the left eyes of two people are synchronously opened, when a display module displays a right eye image, LEDs corresponding to the right eyes of two people are synchronously opened, and under the action of a lens, the two people can simultaneously watch the 3D images; the method for determining the view point and backlight mapping comprises the steps of simulating photon falling points of each row of LEDs at different depth viewpoints, and screening corresponding LED numbers of different viewpoints; the depth is expanded in a mode of switching the LED combinations with different depths; the determination of the number of the lighting at the viewpoints comprises the steps that the LEDs corresponding to the viewpoints are used as mother lamps, and a certain number of LEDs are continuously arranged left and right to realize high-uniformity lighting of a single eye; in addition, the static flicker is reduced, the pupil identification precision of the camera is taken as the high-density visual area of the step length, and the visual area line is adjusted in real time.
Description
Technical Field
The invention relates to the technical field of 3D display, in particular to a naked eye 3D display device which enables multiple persons to watch at the same time, has dense viewpoints and large visual areas and can realize lossless super-resolution.
Background
The naked eye 3D display technology is widely applied to the fields of education, commerce, medical treatment and the like. At present, the naked eye 3D technology mainly uses grating and cylindrical lens technology in the market, but provides better 3D visual experience for human, and meanwhile, some defects still exist, such as resolution loss, higher crosstalk, smaller screen output and the like, and the main reason is that the light source in the technology is also an image source. With the popularization of 4K and 8K liquid crystal panels, the problem of resolution loss can meet the requirements of human beings, however, the calibration of the grating or the cylindrical lens and the LCD panel at the pixel level is still difficult to produce and popularize in a large scale, and the problem of high crosstalk is not solved. The directional backlight naked eye 3D technology has perfectly solved the resolution loss problem, and it realizes the presentation of 3D images in the form of no loss of resolution by a technology in which the image source is independent of the light source. The method is compatible with various 3D movies and 3D games in the market, and avoids the phenomenon of reverse vision of the traditional 3D technology. The directional backlight source mainly comprises directional backlight sources, a lens array, an image display layer, a linear diffusion sheet and other optical devices. Among them, the image display device is mainly a liquid crystal panel having a refresh rate of 120HZ or 240 HZ. When the left eye image is refreshed, the corresponding LED of the left eye is turned on; and when the right eye image is refreshed, the corresponding LED of the right eye is turned on, and the single eye refresh rate is greater than 60HZ, so that the phenomenon of screen flash is avoided. In addition, it does not need a pixel level lens to match the LCD, and is easy to process. However, there still exist some defects, such as limitation of the lens focal length to only have an optimal viewing distance to experience a high display quality of a 3D image, i.e. limitation of the longitudinal viewing distance, and in addition, the number of viewers, the problem of flicker, the problem of determination of backlight corresponding to the viewing zone, the problem of edge brightness reduction caused by the wide viewing zone, and the problem of mutual contradiction between crosstalk value and uniformity are also attracting much attention.
At present, the problem of limited depth is partially solved by changing an ideal backlight curve of an LED, but the LED cannot be produced in large batch due to high processing difficulty, and the viewing range still cannot meet the experience freedom of an experiencer; the determination of the corresponding backlight mother lamp in each view zone currently comprises: reverse illumination, forward illumination, and the like. And (3) reverse illumination: the human eye model lamp arrays or weak laser beams are arranged at the positions of the visual areas, and as the light path is reversible, narrow light spots can be observed at each group of backlight positions respectively in a darkroom environment, and each group of corresponding lamps, namely corresponding main lamps or mother lamps, at the positions where the models are placed can be judged according to the light spots, the scheme limits the LED lamp strips at the central positions to the structural difficulty in accurately identifying the serial numbers of the LED lamps at the central parts; forward lighting scheme: sequentially opening each backlight unit column, performing peak searching calculation according to the brightness distribution of a picture by utilizing the matching of a camera and a stepping motor platform, identifying the center of each column of backlight illumination positions at different distances, and recording the spatial distribution of the whole visual area, wherein the two schemes have a common defect, are long in time consumption and difficult to operate; in addition, the edge brightness reduction caused by the wide visual area and the brightness difference caused by switching the LED lamps due to the identification error can cause a certain intensity flicker; the problem of high crosstalk caused by watching by multiple people also causes physiological symptoms such as dizziness of the experiencers.
Disclosure of Invention
The invention aims to provide a naked eye 3D display device which can achieve lossless super-definition resolution and can be watched by multiple persons at the same time, so that the function that the multiple persons displayed by the directional backlight naked eye 3D display can watch super-definition pictures at the same time is realized.
Therefore, the invention provides a naked eye 3D display device which can not damage ultra-clear resolution and can be watched by multiple persons simultaneously, comprising: the image output module is used for converting the image data into a 3D image with a corresponding format; the backlight module is connected with the display module and comprises a plurality of backlight units; the display module is synchronously connected with the image output module with the backlight unit; when the display module displays a 3D picture corresponding to the left eye of a first viewer, the backlight module starts a backlight unit corresponding to the left eye of the first viewer, and when the display module displays the 3D picture corresponding to the right eye of the first viewer, the backlight module starts the backlight unit corresponding to the right eye of the first viewer; when the display module displays the 3D picture corresponding to the left eye of the second viewer, the backlight module starts the backlight unit corresponding to the left eye of the second viewer, and when the display module displays the 3D picture corresponding to the right eye of the second viewer, the backlight module starts the backlight unit corresponding to the right eye of the second viewer.
Further, if the 3D pictures viewed by the first viewer and the second viewer are the same, the refresh rate of the display module is greater than or equal to 120 Hz; if the 3D pictures accepted by the first viewer and the second viewer are different, the refresh rate of the display module is greater than or equal to 240 Hz.
Further, the backlight module comprises a plurality of U-shaped backlight units, each backlight unit comprises a plurality of LED lamp strips with different distances from the lens, and the LED lamp strip combinations in different backlight units can illuminate the whole display range. Furthermore, the extension of the depth range of the visual area can be realized by turning on different backlight unit combination lamps to turn on the illumination light sources required by different image point positions of the lens corresponding to different object distance positions.
Further, the backlight combination mapped one-to-one with the viewpoint is determined by:
simulating each row of LED lamp bars of the backlight module to randomly emit photons with a certain angle and quantity, refracting the photons through a linear Fresnel lens, and determining the ray path or the photon drop point position of the photons at different longitudinal positions and transverse positions away from the display;
screening the serial numbers of the LED light bars of which the light spot falling points are closest to the viewpoint positions of different backlight modules at each viewpoint position to serve as main lights, wherein the main lighting light is the LED light bar of which the light ray track is exactly at the viewpoint position or is closer to the viewpoint position;
and determining the number N of continuously started LED light bars, taking the interpupillary distance as the distance between two main lights, continuously starting the LED light bars in the N1 rows respectively to perform monocular lighting, and spacing the LED light bars with the preset number of interpupillary distances.
Further, determining the number N of the LED light bars that are continuously turned on at different depth positions includes:
setting the number of continuous light-on corresponding to the optimal viewing distance d1 as N1, and the number of continuous light-on corresponding to different depth distances di from the display as Ni;
determining the distance between the two main lamps according to the formula N1/Ni di/d 1;
assuming that the density of the LED light bars is m, the distance between the LED light bars and the lens is D1, and the distance between the human eyes and the lens is D2, the number N of the continuously turned-on LED light bars is determined according to the formula ((N +1) · m)/D ═ D1/D2.
Further, the reducing of the static and dynamic flicker of the naked eye 3D display includes:
testing the jitter amount or identification error of human eyes on a test pixel, and selecting a viewpoint density value according to a physical space corresponding to the pixel;
determining that a transverse visual area switching condition is reached and transversely switching the LED combination when the viewpoint density value deviating from the last switching position for the second time exceeds the density of the visual area within the continuous preset frame number;
and when the longitudinal visual area is switched, the precision of the ranging software is used as the distance, each longitudinal position corresponds to a set of backlight combination corresponding to the longitudinal position, and the backlight combination corresponding to the longitudinal position is switched to realize depth expansion and continuous switching.
Further, the backlight unit comprises a plurality of substrates which are spliced into a U shape, and the central symmetry point of the U shape of the backlight unit is distributed on the lens
Is a circular arc with a radius, wherein v is the best viewing position of the display device, the lens is a fresnel lens, f is the focal length of the fresnel lens, and the LED light bars of adjacent backlight units at least partially overlap to achieve continuity between the backlight units.
Further, the backlight module comprises an anti-reflection film or an anti-reflection film arranged on the back surface of the substrate; and an anti-reflection film or an anti-reflection film is arranged between the lens and the display device.
Further, the number of photons collected at different depth positions by randomly emitting photons from each row of LED light bars is taken as the main point, and the half-height-width central position of a photon distribution curve is defined as the simulated photon drop point position;
the number of the emitted photons of the LED lamp strip is set to be larger than 1000000, and the photons at different positions are simulated and counted through refraction of the linear Fresnel lens.
Further, after determining the number of the LED light bars which are continuously turned on and the number of the interval lamps, the method further includes:
and (3) adding 1-2 columns of spaced LED lamp bars according to different occasions to reduce crosstalk, or adding 1-2 columns of continuously opened lamps or reducing the number of spaced lamps by 1-2 columns to increase uniformity.
Further, when the viewing zone switching condition is met, with a preset precision as an interval, each longitudinal position corresponds to a set of backlight combinations corresponding to the longitudinal position, and switching to the backlight combinations corresponding to the longitudinal position to realize depth expansion and continuous switching includes:
simulating light spot falling points at different longitudinal positions by taking the depth measurement precision of the double cameras as a reference and the depth measurement precision as a step length, and screening a set of serial number combinations of the LED light bars corresponding to the longitudinal positions;
if the serial number combinations of the LEDs at the same transverse position have not changed at different depths d1, d2 and d3, the three depths corresponding to d1, d2 and d3 can be combined into the same set of serial number combinations of the LED light bars so as to reduce the stroboscopic effect of the LED light bars caused by the front-back depth movement;
if the light-on serial numbers of the light sources at different depths d1, d2 and d3 are different at the same transverse position, a set of LED serial number combination is started at different depth distances so as to improve the density of a depth visual area and ensure the continuity of serial number switching of the depth LED combination.
Further, the testing of the jitter amount or recognition error of the human eye to the test pixel includes:
fixing the dummy head model, and obtaining the pupil position tracked and recognized by human eyes after starting human eye tracking program software for a period of time;
and drawing a curve graph by taking the frame rate of the camera as an abscissa and the pupil position as an ordinate, and determining the jitter amount or the identification error tracked by human eyes according to the curve graph.
Further, determining that the backlight combination is turned on corresponding to the tight viewing zone of the naked-eye 3D display further includes:
selecting viewpoint positions according to the distance by taking the pupil identification precision of the camera as the distance, respectively screening different backlight module LED sequence combinations which are closest to each viewpoint position, and storing the corresponding relation between the viewpoint positions and the LED sequence combinations into a human eye identification software program;
when human eyes move to the viewpoint position, the LED sequence combination corresponding to the viewpoint position is started to illuminate the human eyes.
Further, the LED lamp strips of the backlight module are continuously arranged in a staggered manner, so that the LED lamp strips are arranged in any visual area in the visual area space for illumination.
Compared with the prior art, the naked-eye 3D display device with lossless super-definition resolution and capable of being watched by multiple persons simultaneously converts image data into 3D images in corresponding formats through the image output module, outputs 3D images corresponding to the left eye or the right eye to a first viewer through the display module, outputs 3D images corresponding to the left eye or the right eye to a second viewer, and simultaneously starts the backlight unit corresponding to the left eye or the right eye of the first viewer or the second viewer.
In addition, the naked eye 3D display device which is lossless and has super-clear resolution and can be watched by multiple persons simultaneously, provided by the invention, has the advantage that the transverse watching range of the naked eye 3D television device is expanded by designing a new U-shaped backlight structure. Moreover, by starting the LED lamp strips combined by serial numbers of different distances between the backlight module and the lens, the image distance is changed in a mode of adjusting the object distance, and the depth range of the display is further expanded; the method comprises the steps that the LED serial numbers required to be started for different depth expansion are determined in the form of screening light ray track falling points by simulating light ray paths of each LED light bar at different longitudinal positions through a Fresnel lens and screening LED serial numbers required to be started for different backlight modules corresponding to different viewpoints; the expansion of the longitudinal viewing distance is based on the staggered continuous U-shaped backlight, the longitudinal and transverse seamless dense visual areas are continuously switched, and the continuity of the transverse and longitudinal moving experience is ensured; more importantly, LEDs entering pupils are used as main lamps at different transverse and longitudinal positions, different numbers of LED lamps are respectively and continuously started to be used as monocular illumination, and meanwhile, different numbers of LED lamps are arranged at intervals to be used as dark areas of two eyes, so that high-quality display with high uniformity and low crosstalk at different depths is realized; in addition, according to the precision value of tracking the pupil by the human eye as the selected value of the viewpoint density value,
further, the static and dynamic flicker intensity which is inevitable when the horizontal and longitudinal movement is reduced by the dense visual area and the real-time adjusting visual area. By simultaneously starting the LED combinations of a plurality of viewpoints, the left and right images of the module are synchronously displayed, and a plurality of people can watch the images simultaneously under the cooperation of the lens.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a simulated LED light trace drop point location.
Fig. 2 is a schematic structural diagram of a backlight module.
Fig. 3 is a schematic diagram of a naked eye 3D display device watched by multiple persons simultaneously, wherein the naked eye 3D display device is watched by the multiple persons simultaneously in a 3D watching state.
Fig. 4 is a flow chart of screening naked eye 3D vision area corresponding to backlight lamp.
Fig. 5a-5b are schematic diagrams of determining the number of lights turned on.
Fig. 6a-6b are schematic views of achieving high quality longitudinal continuous expansion.
FIG. 7 is a diagram of adjusting the view lines in real time for the dense view.
1: a backlight module; 101. 102, 103, 104: four different sets of backlight units; 1011. 1012, 1021, 1022, 1031, 1032, 1041, 1042: illuminating the LED lamp strip turned on at the viewpoint; 2: a lens; 3: a display module; 4: a visual area space; 5: a viewpoint; 201. 202, 203, 204: longitudinal visual area switching positions; 302. 303, 304, 305, 307, 308: positioning a main lamp; 301. 306: a left and right eye gap light; l: equivalent pupil distance; 401, 402, 403, 404: adjusting the boundary of the visual area in real time; 405. 406, 407: judging the condition of switching lamps in the visual area; 501. 502, 503: 1 plate of U-shaped backlight structure; 504. 505, 506: 2 plates of U-shaped backlight structure; 507. 508, 509: 3 plates of U-shaped backlight structure; 510. 511 and 512: the lens module forms ideal free-form surface backlight with the best imaging quality; 513. 514, 515: an optical axis of each lens unit; 516. 517 and 518: each lens unit; 519. 520, the method comprises the following steps: a lens boundary; 601. 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612: watching the turned-on LED light bars by two persons; 613: first viewer, 614: a second viewer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention discloses a method for outputting different 3D pictures to a viewer, which can realize that one or more persons can simultaneously watch an auto-stereoscopic image without resolution loss without the assistance of additional equipment, even different experiencers can watch the auto-stereoscopic image with different pictures, and the effect of watching with single-eye lossless ultrahigh-definition, multi-person simultaneous watching and large depth is provided.
FIG. 1 is a schematic diagram of a simulated LED light trace drop point location. As shown in fig. 1, the naked-eye 3D display device for multiple people to watch simultaneously includes an image output module (not shown), a backlight module 1, a lens 2 and a display module 3. The image output module is used for converting the image data into a 3D image with a corresponding format, the output end is synchronously connected with the backlight module 1 and the display module 3, the 3D image is output to the display module in a time-division mode, and a synchronous signal is extracted and sent to the backlight control module. The backlight module 1 is connected to the image output module and comprises a plurality of backlight units. The lens 2 is a linear fresnel lens, the display module 3 is an LCD liquid crystal display panel, and the image output module is synchronized with the backlight unit 1. In this embodiment, the 3D image displayed by the display module 3 corresponds to the left eye or the right eye of the viewer, and meanwhile, the LED light bar of the backlight unit turned on by the backlight module 1 corresponds to the left eye or the right eye of the display module 3 and the viewer, so that the viewer (single person or multiple persons) can watch the autostereoscopic image without resolution loss without the assistance of additional equipment, and even different experienced persons can watch the autostereoscopic image with different images.
As shown in fig. 1, in the present embodiment, a forward lighting method is used to determine the one-to-one mapping relationship between the backlight LEDs and the viewpoints, and a light ray tracing simulation method is used to determine the backlight corresponding to the naked eye 3D display viewpoint. Specifically, the light beams emitted from the LED light bars 1011, 1012, 1021, 1022, 1031, 1032, 1041, 1042 with different serial numbers in the different backlight units 101, 102, 103, 104 sequentially pass through the linear fresnel lens 2 and the display module 3, and finally fall on the positions corresponding to the viewpoints 5 in the different depth spaces 4.
FIG. 2 is a schematic view of a U-shaped backlight module. As shown in fig. 2, the backlight module includes a plurality of U-shaped backlight units, and the backlight units include a plurality of LED light bars with different pitches from the lenses, wherein the LED light bars have different pitches from the lensesAnd the illumination light sources are arranged at different object distances from the lens. The base plate is spliced into a U shape, and the central symmetry point of the U shape of the backlight unit is distributed on the lens
Is a circular arc with a radius, wherein v is the best viewing position of the display device, the lens is a fresnel lens, f is the focal length of the fresnel lens, and the LED light bars of adjacent backlight units at least partially overlap to achieve continuity between the backlight units. Illustratively, the three spliced substrates of the U-shaped backlight are designed based on free-form surface light sources 510, 511, 512 with optimal imaging quality of lens units 516, 517, 518, wherein the second spliced substrates 504, 505, 506 of the U-shaped backlight are perpendicular to optical axes 513, 514, 515 of the lens units; the first split substrates 501, 502, and 503 and the third split substrates 507, 508, and 509 are symmetrical with respect to the optical axis, and for the sake of processing convenience, the first split substrate and the third split substrate are set to have the same length. The brightness of the lens boundaries 519 and 520 is provided by the first backlight module and the second backlight module, and the second backlight module and the third backlight module together, and under the LED light bars with different light emitting angles, in order to keep the overall brightness consistency of the lens, the included angle theta between the first spliced substrate and the second spliced substrate is changed through simulation calculation. As the U-shaped backlight is closer to the ideal free-form surface backlight, the range of a transverse viewing area of the U-shaped backlight is greatly expanded, and a larger degree of freedom is provided for multiple people to view simultaneously. In addition, the backlight module comprises an anti-reflection film or an anti-reflection film arranged on the back surface of the substrate and is used for preventing mutual interference between the U-shaped backlight plate 1 and the plate 3 in the same backlight module when multiple persons watch the backlight module at the same time and reflection between the lens and the backlight plate, and reducing extra crosstalk increased by reflection of the backlight plate when the multiple persons watch the backlight module at the same time. In addition, an anti-reflection film or an anti-reflection film is arranged between the lens and the display device and used for preventing the reflection of the liquid crystal panel and the Fresnel lens, reducing the reflection crosstalk in the middle of the system and reducing the reflection crosstalk when two persons watch.
Fig. 3 is a schematic diagram of a naked eye 3D display device viewed by multiple persons at the same time in a multi-person viewing state. As shown in fig. 3, for example, when the liquid crystal panel refreshes the left-eye image, the backlight LEDs 602, 606, 610, 604, 608, and 612 are turned on synchronously, and the left-eye image is projected only to the left eyes of the first viewer 613 and the second viewer 614 under the action of the lens; when the liquid crystal panel refreshes the right eye image, the backlight LEDs 601, 605, 609, 603, 607 and 611 are synchronously turned on, under the action of the lens, the right eye image is only projected to the right eyes of the double persons 613 and 614, and the double persons can simultaneously see the same 3D image. When the liquid crystal panel refreshes different 3D images, for example, when the liquid crystal panel refreshes the left eye image of the 3D image 1, the backlight LEDs 602, 606, 610 in the figure are turned on synchronously, and under the action of the lens, the left eye image is projected to only the left eye of the double 614; when the liquid crystal panel refreshes a right eye image of a 3D image 1, backlight LEDs 601, 605 and 609 are synchronously turned on in the figure, and the left eye image is only projected to the right eye of a double person 614 under the action of a lens; when the liquid crystal panel refreshes the left eye image of the 3D image 2, the backlight LEDs 604, 608 and 612 are turned on synchronously, and under the action of the lens, the left eye image of the image 2 is projected to only the left eye of the first viewer 613, and similarly, the backlight LEDs 603, 607 and 611 are turned on synchronously while the right eye image of the 3D image 2 is refreshed, and under the action of the lens, the right eye image is projected to only the right eye of the double viewer 613, and the double viewers can respectively see different 3D images. If the 3D pictures watched by the first viewer and the second viewer are the same, the refresh rate of the display module is greater than or equal to 120 Hz; if the 3D pictures accepted by the first viewer and the second viewer are different, the refresh rate of the display module is greater than or equal to 240 Hz. Since the refresh rate of the liquid crystal panel is 240HZ, the experience person will not have the discomfort of flickering. In addition, the U-shaped backlight structure is closer to the ideal free-form surface backlight, and the distance between two eyes of two persons is larger, so that the dark light area between two persons is larger, and the crosstalk is not obviously improved during the experience of two persons.
The following describes in detail a naked eye 3D display method implemented using the above naked eye 3D display device viewed by multiple persons simultaneously.
Step one, determining that a visual area of the naked eye 3D display correspondingly starts a backlight lamp combination. In this step, one-to-one mapping of the visual area backlight combination can be realized by the backlight module in a ray tracing simulation mode, and the visual area of the naked eye 3D display is determined by the method for determining that the backlight combination is correspondingly started.
In this step, fig. 4 is a flowchart of screening a backlight lamp corresponding to a naked eye 3D viewing area. As shown in fig. 4, determining that the viewing zone of the naked-eye 3D display corresponds to turning on the backlight combination includes steps S401 to S405.
Step S401: setting system parameters, wherein the parameters mainly comprise the space physical coordinates of each LED, the quantity of photons randomly emitted by the LEDs, the photon emission angle, the structural parameters of the linear Fresnel lens and the actual space physical coordinates thereof. In addition, the LED light bars of each backlight module of the naked eye 3D system are required to be numbered.
Step S402: and each row of LED lamp bars of the simulated backlight module randomly emits photons with a certain angle and quantity. The angle takes the normal of the front surface of the LED as a datum line, the left angle and the right angle are respectively a certain angle, and photons with different numbers are arranged at different angles.
Step S403: the photons are refracted through the linear Fresnel lens, the refraction needs to be calculated strictly according to a refraction calculation formula, and finally the photons are far away from the linear Fresnel lens from the lens tooth-shaped structure, and the ray path or the photon drop point position of the photons is determined at different longitudinal positions and transverse positions away from the display.
Step S404: different main lamps are screened for different viewpoints. And screening the serial numbers of the LED light bars of which the light spot falling points are closest to the viewpoint positions of different backlight modules at each viewpoint position to serve as main lights, wherein the main lights are the LED light bars of which the light ray tracks are exactly at the viewpoint positions. The different viewpoints are mainly divided into viewpoints at different longitudinal positions and different transverse positions, and the screening process screens the LED light bars of each backlight module with the LED light spot falling point closest to the viewpoint by taking the viewpoint position as a reference. Specifically, the ray path or photon landing point position is determined at different longitudinal and transverse positions from the display. The number of photons collected at different depth positions by randomly emitting photons from each row of LED light bars is taken as the main point, and the half-height-width central position of a photon distribution curve is defined as the simulated photon drop point position. In this embodiment, the number of photons emitted by the LED light bar is set to be greater than 1000000, and the emission angle follows the light-emitting curve of the actual LED light bar, and the photons at different positions are simulated and counted through refraction by the linear fresnel lens.
Expanding the depth of the continuous visual area, taking the depth measurement precision of the double cameras as a reference, taking the interval as a step length, simulating light spot falling points at different longitudinal positions, screening a set of corresponding LED serial number combinations at different longitudinal positions, and if the LED serial number combinations of the different depth d1, d2 and d3 at the same transverse position are not changed, combining the three depth d1, d2, d3 and the like into the same set of LED serial number combinations, so as to reduce the stroboscopic phenomenon of the LED caused by the longitudinal depth movement before and after the change; if the light-on serial numbers of the light sources at the same transverse position are different at different depths d1, d2 and d3, a set of LED serial number combinations are started at different depths, the density of the depth visual area is increased to the greatest extent, and the continuity of switching of the serial numbers of the depth LED combinations is ensured.
Step S405: and recording the main lamp number and loading the program. The main lamp numbers refer to the numbers of the LED lamps needed to be opened at different viewpoints corresponding to different backlight modules to form an LED sequence (namely an LED lamp strip combination), and the corresponding relation between the viewpoints and the physical positions is loaded to a computer.
In this step, the number of lamps of the backlight unit may be set in order to achieve high uniformity and low crosstalk. And determining the number N of continuously started LED light bars, taking the interpupillary distance as the distance between two main lights, continuously starting the LED light bars in the N1 rows respectively to perform monocular lighting, and spacing the LED light bars with the preset number. Fig. 5a-5b are schematic diagrams of determining the number of lights turned on. As shown in fig. 5a, the effective interpupillary distance between the left and right eyes is L, and at a position 85cm from the display, the pupil is generally positioned by two rows of lamps 302 and 303 and two rows of lamps 304 and 305, respectively, and with this as a center, 2 and 3 rows of continuous N rows of lamps are continuously turned on inside and outside, respectively, to realize monocular illumination. At the same time, a row of LED light bars 301 is turned off to reduce crosstalk between left and right eyes. If the crosstalk is high, the LED light bars 307 and 308 can be used as main lights for positioning the pupil position respectively, and 2 rows of LED light bars are turned off according to the light-on mode shown in fig. 5 b. If the uniformity is poor, the continuous lamp-on number can be expanded to 8 columns.
In actual operation, the distance between two main lamps with different depths is slightly different, and the optimal viewing distance d1 is set as N1 corresponding to the number of continuous lamps, and the number of continuous lamps with different depths di from the display is set as Ni. The spacing between the two main lamps is determined according to the formula N1/Ni di/d 1.
Assuming that the lamp density m, the lamp-to-lens distance d1, and the human eye-to-lens distance d2, the binocular pupil distance lamp number N-1 can be obtained by the formula (N · m)/L ═ d1/d 2. In order to ensure continuity of depth switching, the number of continuous lighting operations for realizing monocular lighting by continuous lighting operation varies, and the number of continuous lighting operations Ni is obtained from the expression N1/Ni-d 1/di, assuming that the number of continuous lighting operations at the optimum viewing distance d1 is N1, and the number of continuous lighting operations Ni at the different depth distances di from the display. The number of continuous lamps and the number of interval lamps obtained by the formula can be optimized according to different occasions. If the crosstalk needs to be low in a specific occasion, the number of the interval lamps needs to be increased by 1-2 rows; if higher uniformity is needed in a specific occasion, 1-2 rows of continuous lamp opening numbers can be properly increased or 1 row of interval lamp numbers can be reduced, and the lamp opening numbers of two sides of two mother lamps for the left eye and the right eye are kept consistent, so that the display quality of the left eye and the right eye is ensured to be consistent.
And step two, testing the jitter amount or the identification error of human eyes on the tested pixels to reduce the static and dynamic flicker intensity. And selecting the viewpoint density value according to the physical distance corresponding to the pixel, and determining that the viewpoint density value reaches the view area switching condition when the viewpoint density value deviating from the last switching position for the second time exceeds the density of the view area within a preset frame number (for example, 10 minutes).
Fig. 6a and 6b are schematic diagrams of the continuation of the longitudinal expansion to achieve high quality. As shown in fig. 6a to 6b, the naked-eye 3D display device for multiple people to watch simultaneously provided in the present embodiment realizes continuous depth expansion by switching the viewing zone lighting mode. The mode mainly realizes longitudinal extension by the mode that different longitudinal light-on sequences are switched continuously through different depth positions having one set of light-on sequences.
The switching point is selected as shown in fig. 6a-6b, and the vertical range of the best display effect formed by a set of backlight sequences at different vertical positions is measured, and if the crosstalk and uniformity are poor, the point can be judged as the switching point. Obviously, if the positions 201, 202, 203 and 204 in the figure are not switched, and the 850mm position light-on sequence is continuously used, the display effect crosstalk and the uniformity are poor; if the switching LED sequences are realized at the positions 201, 202, 203 and 204, the display effect is optimal. In addition, the distance between the switching points needs to be larger than the distance measurement precision, and the phenomenon that the LED lamp combination is continuously switched in depth due to the fact that the depth position of distance measurement software is identified wrongly is avoided.
And step three, when the visual area switching condition is reached, with preset precision as an interval, each longitudinal position corresponds to a set of backlight combination corresponding to the longitudinal position, and the backlight combination corresponding to the longitudinal position is switched to realize depth expansion and continuous switching.
In practice, it is also necessary to measure the dense visual area and determine the density of the visual area lines using the accuracy of human eye tracking to reduce static and dynamic flicker. And establishing a dense visual area, selecting the viewpoint positions according to the distance by taking the pupil identification precision of the camera as the distance, respectively screening the LED sequence combinations of different modules closest to each viewpoint position, and storing the corresponding relation between the viewpoint positions and the LED sequence combinations into a human eye identification software program. When human eyes move to the viewpoint position, the LED sequence combination corresponding to the viewpoint position is started to illuminate the human eyes. In order to establish the dense visual area, the LED light bars of the backlight module are preferably arranged in a continuously staggered manner, so that the LED light bars are illuminated in any visual area in the visual area space.
FIG. 7 is a schematic diagram of adjusting the view line in real time by the secret-vision region. As shown in fig. 7, the naked-eye 3D display device viewed by a plurality of persons includes: and determining the density of the visual area line by using the tracking precision of the human eyes, reducing the flicker intensity by using the dense visual area and adjusting the tracking scheme of the visual area line in real time. The specific scheme is as follows:
firstly, fixing a human head model, starting a human eye tracking program, watching the pupil position fluctuation condition tracked by human eyes for a period of time, and obtaining the precision x pixels of the pupil identification, namely the static identification error. Due to the fact that the backlight continuity and the combination of different backlight module LEDs form a light path to cover any space position, the physical space interval delta d corresponding to 2x pixel of a pixel space tracked by human eyes is used as the linear density of a dense visual area, the brightness intensity difference caused by light cutting due to pupil recognition errors is reduced, and then the flicker intensity is reduced. In addition, as shown in FIG. 5, the real-time adjustment of the viewing area can also reduce flicker. When the eye tracking pupil is in the 401 visual area, the LED does not need to be switched, namely, no obvious flicker exists, when the switching condition 405 is reached, namely, the eye tracking program switches to the second visual area 402 when the distance between the eye tracking program and the last switching position is identified for the second time and the distance between the eye tracking program and the last switching position is larger than the width of the visual area, and so on, the flickering caused by the fact that the light is switched back and forth at the boundary caused by the traditional fixed visual area boundary.
The flicker is reduced in a real-time adjustment mode, identification errors can inevitably occur when pupil tracking and positioning are carried out, the errors exceed the visual area switching position, visual area misjudgment can be caused, the switching to the next visual area is mistaken, and flicker is caused. The static flicker is reduced by improving the judgment accuracy of the visual area, the brightness variation caused by the misjudgment of the visual area is reduced by the lighting scheme of the dense visual area, and the flicker intensity is reduced.
In addition, the naked eye 3D display device capable of realizing lossless super-definition resolution and being watched by multiple persons simultaneously converts image data into 3D images in corresponding formats by influencing the output module, outputs a 3D image corresponding to a left eye or a right eye to a first viewer by the display module, outputs a 3D image corresponding to a left eye or a right eye to a second viewer, and simultaneously starts the backlight unit corresponding to the left eye or the right eye of the first viewer or the second viewer, so that the naked eye 3D display device can simultaneously watch an auto-stereoscopic image without resolution loss for one person or multiple persons without the assistance of additional equipment, and even different experienced persons can watch auto-stereoscopic images with different images.
It is to be understood that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended to cover such changes and modifications as fall within the scope of the appended claims and equivalents thereof.
Claims (12)
1. The utility model provides a bore hole 3D display device that harmless ultraclean resolution ratio, many people watched simultaneously, big depth, its characterized in that includes:
the image output module is used for converting the image data into a 3D image with a corresponding format;
the backlight module is connected with the display output module and comprises a plurality of U-shaped backlight units, each unit comprises a plurality of LED lamp strips with different distances from the lens, and the LED lamp strip combinations in different backlight units can illuminate the whole display range;
a display module controlled in synchronization with the backlight unit; when the display module displays a 3D picture corresponding to the left eye of a first viewer, the backlight module starts a backlight unit corresponding to the left eye of the first viewer, and when the display module displays the 3D picture corresponding to the right eye of the first viewer, the backlight module starts the backlight unit corresponding to the right eye of the first viewer; when the display module displays the 3D picture corresponding to the left eye of the second viewer, the backlight module starts the backlight unit corresponding to the left eye of the second viewer, and when the display module displays the 3D picture corresponding to the right eye of the second viewer, the backlight module starts the backlight unit corresponding to the right eye of the second viewer.
2. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 1, wherein:
if the 3D pictures watched by the first viewer and the second viewer are the same, the refresh rate of the display module is greater than or equal to 120 Hz; if the 3D pictures accepted by the first viewer and the second viewer are different, the refresh rate of the display module is greater than or equal to 240 Hz.
3. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 2, wherein: the backlight module comprises a plurality of U-shaped backlight units, each backlight unit comprises a plurality of LED lamp strips with different distances from the lens, and the LED lamp strip combinations in different backlight units can illuminate the whole display range.
4. A naked eye 3D display device with lossless super-resolution and simultaneous viewing by multiple persons according to claim 3, wherein the extension of the depth range of the viewing zone can be achieved by turning on different backlight unit combination lamps to turn on the illumination light sources required by the lens at different image point positions corresponding to different object distance positions.
5. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 4, wherein: determining a backlight combination mapped one-to-one with a viewpoint by:
each row of LED lamp bars of the analog backlight unit randomly emit photons with a certain angle and quantity, and the photons are refracted by the linear Fresnel lens to determine the ray path or the photon landing point position of the linear Fresnel lens at different longitudinal positions and transverse positions away from the display;
screening serial numbers of LED light bars of which light spot falling points are closest to the viewpoint positions of different backlight modules at each viewpoint position to serve as main lighting lamps, wherein the main lighting lamps are the LED light bars with light ray tracks at the viewpoint positions in the right falling points;
and determining the number N of continuously started LED light bars, taking the interpupillary distance as the distance between two main lights, continuously starting the LED light bars in the N1 rows respectively to perform monocular lighting, and spacing the LED light bars with the preset number of interpupillary distances.
6. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 5, wherein: determining the number N of the LED light bars which are continuously turned on at different depth positions comprises the following steps:
setting the number of continuous light-on corresponding to the optimal viewing distance d1 as N1, and the number of continuous light-on corresponding to different depth distances di from the display as Ni;
determining the distance between the two main lamps according to the formula N1/Ni-d 1/di;
assuming that the density of the LED light bars is m, the distance between the LED light bars and the lens is D1, and the distance between the human eyes and the lens is D2, the number N of the continuously turned-on LED light bars is determined according to the formula ((N +1) · m)/D ═ D1/D2.
7. A naked eye 3D display device with lossless ultradefinition resolution and simultaneous viewing by multiple persons according to claim 6, wherein reducing the intensity of static and dynamic flicker of the naked eye 3D display comprises:
testing the jitter amount or identification error of human eyes on a test pixel, and selecting a viewpoint density value according to a physical space corresponding to the pixel;
determining that a transverse visual area switching condition is reached and transversely switching the LED combination when the viewpoint density value deviating from the last switching position for the second time exceeds the density of the visual area within the continuous preset frame number;
and when the longitudinal visual area is switched, the precision of the ranging software is used as the distance, each longitudinal position corresponds to a set of backlight combination corresponding to the longitudinal position, and the backlight combination corresponding to the longitudinal position is switched to realize depth expansion and continuous switching.
8. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 7, wherein: the backlight unit comprises a plurality of substrates which are spliced into a U shape, and the central symmetry point of the U shape of the backlight unit is distributed on the lens
Is a circular arc with a radius, wherein v is the best viewing position of the display device, the lens is a fresnel lens, f is the focal length of the fresnel lens, and the LED light bars of adjacent backlight units at least partially overlap to achieve continuity between the backlight units.
9. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 8, wherein: the number of photons collected at different depth positions by randomly emitting photons from each row of LED light bars is taken as a main point, and the half-height-width central position of a photon distribution curve is defined as a simulated photon drop point position;
the number of the emitted photons of the LED lamp strip is set to be larger than 1000000, and the photons at different positions are simulated and counted through refraction of the linear Fresnel lens.
10. A lossless ultradefinition resolution, naked-eye 3D display apparatus for simultaneous viewing by multiple persons, as claimed in claim 9, wherein: after the number of the LED light bars which are continuously turned on and the number of the interval lamps are determined, the method further comprises the following steps:
and (3) adding 1-2 columns of spaced LED lamp bars according to different occasions to reduce crosstalk, or adding 1-2 columns of continuously opened lamps or reducing the number of spaced lamps by 1-2 columns to increase uniformity.
11. The apparatus for naked eye 3D display with lossless super-resolution and simultaneous viewing by multiple persons according to claim 10, wherein when the viewing zone switching condition is achieved, at a preset precision interval, each vertical position corresponds to a set of backlight combinations corresponding to the vertical position, and switching to the backlight combination corresponding to the vertical position to achieve depth expansion and continuous switching includes:
simulating light spot falling points at different longitudinal positions by taking the depth measurement precision of the double cameras as a reference and the depth measurement precision as a step length, and screening a set of serial number combinations of the LED light bars corresponding to the longitudinal positions;
if the serial number combinations of the LEDs at the same transverse position have not changed at different depths d1, d2 and d3, the three depths corresponding to d1, d2 and d3 can be combined into the same set of serial number combinations of the LED light bars so as to reduce the stroboscopic effect of the LED light bars caused by the front-back depth movement;
if the light-on serial numbers of the light sources at different depths d1, d2 and d3 are different at the same transverse position, a set of LED serial number combination is started at different depth distances so as to improve the density of a depth visual area and ensure the continuity of serial number switching of the depth LED combination.
12. A lossless ultradefinition resolution, multi-person viewing simultaneously, naked eye 3D display apparatus as recited in claim 11, wherein testing the amount of jitter or recognition error of the human eye for the test pixel comprises:
fixing the dummy head model, and obtaining the pupil position tracked and recognized by human eyes after starting human eye tracking program software for a period of time;
and drawing a curve graph by taking the frame rate of the camera as an abscissa and the pupil position as an ordinate, and determining the jitter amount or the identification error tracked by human eyes according to the curve graph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200345.1A CN112946912B (en) | 2021-02-23 | 2021-02-23 | Naked eye 3D display device capable of achieving lossless super-definition resolution and simultaneous watching of multiple people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200345.1A CN112946912B (en) | 2021-02-23 | 2021-02-23 | Naked eye 3D display device capable of achieving lossless super-definition resolution and simultaneous watching of multiple people |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112946912A true CN112946912A (en) | 2021-06-11 |
| CN112946912B CN112946912B (en) | 2023-08-04 |
Family
ID=76245463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110200345.1A Active CN112946912B (en) | 2021-02-23 | 2021-02-23 | Naked eye 3D display device capable of achieving lossless super-definition resolution and simultaneous watching of multiple people |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112946912B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900273A (en) * | 2021-10-09 | 2022-01-07 | 广东未来科技有限公司 | Naked eye 3D display method and related equipment |
| CN114326142A (en) * | 2021-11-24 | 2022-04-12 | 中山大学 | Full-parallax naked-eye 3D display system and method based on human eye tracking |
| CN114815292A (en) * | 2022-04-18 | 2022-07-29 | 中山大学 | Non-flicker type directional backlight naked eye 3D display device for multi-person watching |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2194630A1 (en) * | 1996-01-24 | 1997-07-25 | Shinmei Electric Co., Ltd. | Viewing system for electronic 3-d animation and 3-d viewing mirror |
| US20120224038A1 (en) * | 2011-03-04 | 2012-09-06 | Alexander Roth | Autostereoscopic Display System |
| CN103197428A (en) * | 2013-04-16 | 2013-07-10 | 佛山市英视通电子科技有限公司 | Naked eye stereoscopic image display optical device based on arc-shaped backlight and lens |
| CN103605211A (en) * | 2013-11-27 | 2014-02-26 | 南京大学 | Tablet non-auxiliary stereo display device and method |
| CN103760677A (en) * | 2014-02-14 | 2014-04-30 | 佛山市英视通电子科技有限公司 | Even and non-dark-space backlight pointing-type naked-eye 3D display method, device, unit and system |
| CN203930225U (en) * | 2014-06-07 | 2014-11-05 | 杭州立体世界科技有限公司 | High definition bore hole Portable stereoscopic video player light path circuit |
| CN104144336A (en) * | 2014-07-15 | 2014-11-12 | 深圳市华星光电技术有限公司 | Image displaying method and device of multi-view stereo display |
| CN104216133A (en) * | 2014-09-16 | 2014-12-17 | 中山大学 | Naked eye 3D display method, device and system with adjustable depth of visual area |
| CN105093549A (en) * | 2015-08-31 | 2015-11-25 | 中山大学 | Directive backlight naked-eye 3D display apparatus and method realizing multi-person tracking |
| KR20150136157A (en) * | 2014-05-26 | 2015-12-07 | 경북대학교 산학협력단 | Glasses-free 3D display device |
| CN106773080A (en) * | 2015-12-25 | 2017-05-31 | 深圳超多维光电子有限公司 | 3 d display device and display methods |
| CN108345122A (en) * | 2018-01-29 | 2018-07-31 | 中山大学 | A kind of determining bore hole 3D display vision area corresponds to the method and system of backlight |
| JP2019061058A (en) * | 2017-09-26 | 2019-04-18 | 学校法人慶應義塾 | Stereoscopic display device, stereoscopic display method, and stereoscopic display program |
| CN110401829A (en) * | 2019-08-26 | 2019-11-01 | 京东方科技集团股份有限公司 | Naked eye 3D display device and display method thereof |
-
2021
- 2021-02-23 CN CN202110200345.1A patent/CN112946912B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2194630A1 (en) * | 1996-01-24 | 1997-07-25 | Shinmei Electric Co., Ltd. | Viewing system for electronic 3-d animation and 3-d viewing mirror |
| US20120224038A1 (en) * | 2011-03-04 | 2012-09-06 | Alexander Roth | Autostereoscopic Display System |
| CN103197428A (en) * | 2013-04-16 | 2013-07-10 | 佛山市英视通电子科技有限公司 | Naked eye stereoscopic image display optical device based on arc-shaped backlight and lens |
| CN103605211A (en) * | 2013-11-27 | 2014-02-26 | 南京大学 | Tablet non-auxiliary stereo display device and method |
| US20160105665A1 (en) * | 2013-11-27 | 2016-04-14 | Nanjing University | Unassisted stereoscopic display device using directional backlight structure |
| CN103760677A (en) * | 2014-02-14 | 2014-04-30 | 佛山市英视通电子科技有限公司 | Even and non-dark-space backlight pointing-type naked-eye 3D display method, device, unit and system |
| KR20150136157A (en) * | 2014-05-26 | 2015-12-07 | 경북대학교 산학협력단 | Glasses-free 3D display device |
| CN203930225U (en) * | 2014-06-07 | 2014-11-05 | 杭州立体世界科技有限公司 | High definition bore hole Portable stereoscopic video player light path circuit |
| CN104144336A (en) * | 2014-07-15 | 2014-11-12 | 深圳市华星光电技术有限公司 | Image displaying method and device of multi-view stereo display |
| CN104216133A (en) * | 2014-09-16 | 2014-12-17 | 中山大学 | Naked eye 3D display method, device and system with adjustable depth of visual area |
| CN105093549A (en) * | 2015-08-31 | 2015-11-25 | 中山大学 | Directive backlight naked-eye 3D display apparatus and method realizing multi-person tracking |
| CN106773080A (en) * | 2015-12-25 | 2017-05-31 | 深圳超多维光电子有限公司 | 3 d display device and display methods |
| JP2019061058A (en) * | 2017-09-26 | 2019-04-18 | 学校法人慶應義塾 | Stereoscopic display device, stereoscopic display method, and stereoscopic display program |
| CN108345122A (en) * | 2018-01-29 | 2018-07-31 | 中山大学 | A kind of determining bore hole 3D display vision area corresponds to the method and system of backlight |
| CN110401829A (en) * | 2019-08-26 | 2019-11-01 | 京东方科技集团股份有限公司 | Naked eye 3D display device and display method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 周建英等: "裸眼3D显示串扰率实时检测系统设计", 《激光与光电子学进展》, vol. 54, no. 6, pages 061201 - 1 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900273A (en) * | 2021-10-09 | 2022-01-07 | 广东未来科技有限公司 | Naked eye 3D display method and related equipment |
| CN113900273B (en) * | 2021-10-09 | 2023-12-26 | 广东未来科技有限公司 | Naked eye 3D display method and related equipment |
| CN114326142A (en) * | 2021-11-24 | 2022-04-12 | 中山大学 | Full-parallax naked-eye 3D display system and method based on human eye tracking |
| CN114815292A (en) * | 2022-04-18 | 2022-07-29 | 中山大学 | Non-flicker type directional backlight naked eye 3D display device for multi-person watching |
| WO2023201806A1 (en) * | 2022-04-18 | 2023-10-26 | 广州弥德科技有限公司 | Flicker-free directional backlight naked eye 3d display device for multi-person viewing |
| CN114815292B (en) * | 2022-04-18 | 2024-01-26 | 广州弥德科技有限公司 | Non-flash directional backlight naked eye 3D display device for multi-person viewing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112946912B (en) | 2023-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112946912B (en) | Naked eye 3D display device capable of achieving lossless super-definition resolution and simultaneous watching of multiple people | |
| US5410345A (en) | Stroboscopic illumination system for video displays | |
| US5036385A (en) | Autostereoscopic display with multiple sets of blinking illuminating lines and light valve | |
| US8587641B2 (en) | Autostereoscopic display system | |
| EP0570179B1 (en) | Directional display | |
| US5606455A (en) | Autostereoscopic display with high power efficiency | |
| CA2143617C (en) | Stroboscopic illumination system for video displays | |
| US20060012676A1 (en) | Stereoscopic image display | |
| CN107561722B (en) | 360 ° of integration imaging desktop 3D display systems | |
| CN102272665A (en) | Backlighting system for a 2d/3d autostereoscopic multiview display | |
| CN1640153A (en) | Three-dimensional image projection employing retro-reflective screens | |
| US8403487B2 (en) | Stereo-image displaying apparatus and method for reducing stereo-image cross-talk | |
| CN104597608B (en) | The directive property backing structure and method of the LED-based three-dimensional display without auxiliary equipment | |
| CN110264905A (en) | A kind of light field display system | |
| CN114326142A (en) | Full-parallax naked-eye 3D display system and method based on human eye tracking | |
| CN104216130A (en) | Naked eye 3D display method, device and system with adjustable depth of visual area | |
| CN114035340A (en) | Backlight module, display module, driving method and display device | |
| CN108107598A (en) | A kind of curved surface bore hole 3D display device | |
| CN208000416U (en) | A kind of novel curved surface bore hole 3D display device | |
| CN113156658A (en) | Stereoscopic display system based on synchronous spatial light modulator | |
| CN107908014A (en) | A kind of large scale directive property backlight bore hole 3D display system | |
| JP4348337B2 (en) | Light source device for stereoscopic image display device | |
| CN214540260U (en) | Stereoscopic display system based on synchronous spatial light modulator | |
| WO2023201806A1 (en) | Flicker-free directional backlight naked eye 3d display device for multi-person viewing | |
| CN109613709B (en) | Directional display device based on two LCD screens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |