CN105049833B - A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure - Google Patents
A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure Download PDFInfo
- Publication number
- CN105049833B CN105049833B CN201510439976.3A CN201510439976A CN105049833B CN 105049833 B CN105049833 B CN 105049833B CN 201510439976 A CN201510439976 A CN 201510439976A CN 105049833 B CN105049833 B CN 105049833B
- Authority
- CN
- China
- Prior art keywords
- light
- symmetrical adjustable
- pupil
- symmetrical
- lens
- 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.)
- Active
Links
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Eye Examination Apparatus (AREA)
Abstract
A kind of stereopsis check device using symmetrical adjustable backlight structure, including symmetrical adjustable backlight device, pupil position tracking module, synchronizing signal extraction module, signal processing module, image display panel；Symmetrical adjustable backlight device includes symmetrical adjustable optical component, addressable light source assembly；Wherein, symmetrical adjustable optical component includes guide-lighting module and symmetrical adjustable imaging modules again, and guide-lighting module includes：Condenser, leaded light device and triangular prism, symmetrical adjustable imaging modules (M) include：Lens, lens switching device, enocscope, spectroscope and refractive power speculum；Signal processing module controls the addressable light source assembly in adjustable backlight structure according to the pupil position information and video synchronization signal received.While left image is shown, signal processing module lights corresponding luminescence unit according to pupil of left eye positional information, realizes that light is converged at pupil of left eye；While right image is shown, signal processing module lights corresponding luminescence unit according to pupil of right eye positional information, realizes that light is converged at pupil of right eye.
Description
First, technical field
The present invention relates to technical field of information display, especially with a kind of three-dimensional inspection of symmetrical adjustable backlight structure
Look into device.
2nd, background technology
Stereo blind refers to that stereoscopic vision is lacked.The third dimension of people is built such that：Eyes watch object, eyes attentively simultaneously
Sight is intersected at a bit, action viewpoint, and it is corresponding that the luminous point on retina is reflected back into from blinkpunkt, and this 2 points turn signal
Enter brain visual center and synthesize the complete picture of an object.Not only seen clearly between this point, and this point and surrounding objects away from
From, depth, convex-concave etc. can be discernable, so into picture be exactly three-dimensional picture, this vision is stereoscopic vision.People's is double
Once eye visual performance is occur obstacle shortage stereoscopic vision, scenery depth to exterior space and apart from can not just judge, this
The illness of sample is referred to as stereo blind, and (incidence of disease of stereo blind is 2.6%, and 30%) stereoscopic vision is abnormal to be then up to.Stereo blind is nearly ten
A kind of illness in eye that Nian Laicai is had found by biologist, it is a kind of than yctalopia, colour blindness and the more serious ophthalmology disease of anomalous trichromatism.Suffer from
Stereo blind person can not be engaged in pilot, the work such as trainman.Colour blindness is congential dyschromatopsia, and achromate can not differentiate certainly
A variety of colors or certain color in right spectrum；To the then title anomalous trichromatism of the resolving ability difference of color.Anomalous trichromatism patient, although can see
The color that normal person is seen, but the ability of identification color is slow or very poor.
The detection method of traditional stereo blind has stereoscopic vision meter inspection technique, stereoacuity test chart inspection technique, stereoscope
Inspection technique, polarised light experimental check method.There are some to be used for the three-dimensional inspection figure for detecting blind Detecting, such as Chinese patent at present
CN102529470A.Above-mentioned method of testing, which all exists, detects that sample is single, and detecting distance is limited, and be there is monocular cue etc. and is asked
Topic.
Existing stereoscopic display implementation mainly has parallax three-dimensional, and body is three-dimensional and holographic three-dimensional three kinds.Wherein body is three-dimensional
With it is holographic three-dimensional all there is monocular cue the problem of, and parallax solid is that the different picture of two width is projected to the left and right of people respectively
In eye, stereoscopic vision is formed in the fusion of brain, therefore parallax solid has its advantageous advantage to be used for the inspection of stereo blind
Survey.The test of traditional eye test mode, such as near vision, anomalous trichromatism and colour blindness test need multiple inspection equipment, portability
Difference.Three-dimensional blind Detecting needs to overcome the shortcomings of in above-mentioned technology.
3rd, the content of the invention
The purpose of the present invention is that, in order to solve to detect that sample is single in three-dimensional blind detection process, detecting distance is limited, and is deposited
The problems such as monocular cue, and propose it is a kind of using symmetrical adjustable backlight structure can the viewing of many distances stereopsis inspection
Device.The present invention is realized by following technological means.Pupil position tracking module is obtained at beholder's pupil position information, signal
Module is managed after pupil position information and video synchronization signal is received, controls symmetrical adjustable backlight structure corresponding left
Right figure projects the left and right pupil of beholder respectively, the left eye of beholder is can only see left image on image display panel, right
Eye can only see the right image on image display panel.
Technical scheme：A kind of free stereo test dress of many distances viewing of symmetrical adjustable backlight structure
Put, including symmetrical adjustable backlight device, pupil position tracking module, synchronizing signal extraction module, signal processing module, image
Display screen；Symmetrical adjustable backlight device includes symmetrical adjustable optical component, addressable light source assembly；Wherein, it is symmetrical adjustable
Formula optical module includes guide-lighting module and symmetrical adjustable imaging modules again, and guide-lighting module includes：Condenser, leaded light device and three
Angle prism；Symmetrical adjustable imaging modules (M) (including：Lens, lens switching device, enocscope, spectroscope and refractive power reflection
Mirror)；Signal processing module is controlled in adjustable backlight structure according to the pupil position information and video synchronization signal received
Addressable light source assembly.While left image is shown, signal processing module will be sent out accordingly according to pupil of left eye positional information
Light unit is lighted, and realizes that light is converged at pupil of left eye；While right image is shown, signal processing module is according to right eye pupil
Hole site information lights corresponding luminescence unit, realizes that light is converged at pupil of right eye；The present invention is a kind of symmetrical adjustable
The free stereo test device of many distances viewing of formula backing structure.
The conduction of light is realized using guide-lighting module, the light sent from addressable light source assembly, by by condenser,
The guide-lighting module of leaded light device, triangular prism composition；The light sent from guide-lighting module realizes point of light by spectroscope
From the light of half projects refractive power speculum above, and the half light after light splitting passes through the reflecting focal of refractive power speculum；
Second half light projects following refractive power speculum reflecting focal；The upright position for the light path of light that guide-lighting module is sent is consolidated
Surely there are the lens or lens group and lens switching device of two to five different focals, different lens are made by lens switching device
In the light path of light；Symmetrical adjustable imaging modules realize the lens combination corresponding to different distance.Lens switching dress
The application put, has reached different optical effects, and stereoeffect can be watched in different distance by realizing beholder.
The light for being sent addressable light source assembly with symmetrical expression backing structure pools viewing window in some distance；
Different viewing distances, viewing window width is with luminescence unit length into fixed proportionate relationship, and proportionality constant is β1, β2, β3, i.e.,
The proportionality constant of different distance is represented respectively；
In above formula, W represents to watch the width of window, and w represents the width of luminescence unit, and T is represented between two viewing windows
Distance, t represents the distance between two luminescence units.
In order to realize good stereo display effect, viewing window width W and two, which watch the distance between window T, to be needed
Within the scope of being maintained at certain, therefore after β changes, the lens switching device in symmetrical adjustable imaging modules is needed
Carry out lens switching.
Device uses symmetrical adjustable backlight structure to provide synchronous backlight for image display panel.Adjust symmetrical adjustable optical
Lens switching device in component, realizes the different lens combinations in symmetrical adjustable imaging modules, coordinates addressable light source
The light that component is sent, realizes convergence in diverse location after symmetrical adjustable optical component and forms viewing window,
Thus beholder can watch stereoeffect in different distances.The conduction of light is realized using guide-lighting module.From addressable
The light sent in light source assembly, by the guide-lighting module being made up of condenser, leaded light device, triangular prism, effective increase
Light path.Leaded light device application total reflection principle, effectively reduces dispersion angle and the transmission loss of light, improves light
Utilization rate.
The effect that light is converged in different distance is realized by the way of poly-lens is combined.Addressable light source assembly is sent
Light, after being combined by poly-lens, convergence of the light in different distance is realized with reference to lens switching device, so as to realize
Stereoeffect.
Using synchronizing signal extraction module.After the synchronizing signal for extracting video, signal is arranged and denoising.In order to
Realize that module is interconnected, signal amplitude is limited, while further increasing signal quality, the stabilization of system is improved
Property.
Using addressable light source assembly.Signal processing module receives the pupil position information from pupil position tracing module
Afterwards, the luminescence unit of correspondence position in addressable light source assembly is lighted.Signal processing module is received to be extracted from synchronizing signal
The luminescence unit in addressable light source assembly is lighted in the image display panel synchronizing signal of module, timesharing.When showing right image, only
The luminescence unit for having corresponding beholder's right eye is lit, i.e., beholder can only see right image；Similarly, when showing left image,
The luminescence unit for only corresponding to beholder's left eye is lit, i.e., beholder can only see left image.
The beneficial effects of the invention are as follows：The invention provides it is a kind of using symmetrical adjustable backlight structure can many distances see
Compared with prior art, its remarkable advantage is the free stereo test device seen：
1st, using symmetrical adjustable backlight structure, backlight uniformity and brightness be greatly strengthen；
2nd, by adjusting lens switching device, realize and watch stereoeffect in different distance；
3rd, using synchronizing signal extraction module and symmetrical adjustable backlight structure, with good image quality, drop significantly
Low three-dimensional string shadow；
4th, it is compact conformation, compact using leaded light device, it is easy to carry；
5th, using pupil position tracing module, without wearing auxiliary equipment；
6th, it is the left images HD video with parallax to play film source.Display image is without resolution ratio reduction, with very strong
Stereoeffect；
7th, 2D and 3D switchings, strong applicability can freely be realized.Detect sample-rich, can many distance viewings, compact conformation, height
It is clear etc..
4th, illustrate
Fig. 1 is the overall structure side view of an embodiment, and dotted portion M is symmetrical adjustable imaging modules；
Fig. 2 is free stereo test device principle stereogram；
Fig. 3 is that symmetrical adjustable backlight structure can many distance viewing schematic diagrams；
Fig. 4 is condenser schematic diagram；
Fig. 5 is leaded light device schematic diagram；
Fig. 6 is triangular prism schematic diagram；
Fig. 7 is Fresnel Lenses schematic diagram；
Fig. 8 is lens switching device schematic diagram；
Fig. 9 is spectroscope schematic diagram；
Figure 10 is refractive power speculum schematic diagram；
Figure 11 is addressable light source assembly schematic diagram；
Figure 12 is signal processing module block diagram.
5th, embodiment
In Fig. 1, the free stereo test device of many distances of symmetrical adjustable backlight structure viewing include luminescence unit 1,
Condenser 2, leaded light device 3, triangular prism 4, triangular prism 5, leaded light device 6, triangular prism 7, lens switching device 8, lens
9th, lens 10, lens 11, spectroscope 12, enocscope 13, enocscope 14, lens 15, lens 16, enocscope 17, enocscope 18,
LCD display 20；The symmetrical adjustable backlight structures of Fig. 3 can many distance viewing schematic diagrams；Fig. 7 Fresnel Lenses schematic diagrams；Fig. 3,7
In：Symmetrical adjustable imaging modules M, luminescence unit width w, array of light emitting cells centre distance t, watch window width W, observation
Between window apart from T, beholder position A, beholder position B, luminescence unit to symmetrical adjustable backlight structure apart from U, most
Good viewing distance V (A), viewing ratio V (B), virtual image object distance V '.
The present invention will be further described with reference to the accompanying drawings and examples, and basic thought of the invention is former using the time-division
Reason realizes stereoeffect.It is necessarily pointed out that, following embodiment is served only for the present invention and is described further, it is impossible to
Limiting the scope of the invention is interpreted as, art maturation personnel make one according to foregoing invention content to the present invention
A little nonessential modifications and adaptations, still fall within protection scope of the present invention.
A kind of symmetrical adjustable backlight structure can the viewing of many distances free stereo test device, whole device is by symmetrical
Adjustable backlight structure, beholder's location tracking module, synchronizing signal extraction module and image display panel are constituted.It is real in this implementation
In example, image display panel uses LCD (120HZ) display.Symmetrical adjustable backlight structure includes symmetrical adjustable optical
Component, addressable light source assembly.Wherein, symmetrical adjustable optical component include again guide-lighting module (including：Condenser, lightguide
Part and triangular prism) and symmetrical adjustable imaging modules (including：Lens, lens switching device, enocscope, spectroscope and refractive power
Speculum).
System finishing principle is as follows：Signal processing module receives the video synchronization signal from synchronizing signal extraction module,
While left image is shown, luminescence unit corresponding with left image in addressable light source assembly is lighted, is provided together for image
Walk backlight；While right image is shown, luminescence unit corresponding with right image in addressable light source assembly is lighted, is image
Synchronous backlight is provided.Signal processing module receives the position of human eye information from pupil position tracing module, lights addressable light
Corresponding luminescence unit in source component.After obtaining left eye information, corresponding luminous of left eye in addressable light source assembly is lighted
Unit, light passes through after symmetrical adjustable backlight structure, and convergence is realized at left eye position, forms watch window.Similarly, obtain
Obtain after right eye information, light the corresponding luminescence unit of right eye in addressable light source assembly, light is by the symmetrical adjustable back of the body
Convergence is realized after photo structure, at right eye position, watch window, such as Fig. 2 is formed.Lens in symmetrical adjustable imaging modules
Switching device can realize the combination of different lens, coordinate the luminescence unit in addressable light source assembly, realize difference away from
From light collection, beholder is watched stereoeffect in different distances.
Using addressable light source assembly.Signal processing module receives the pupil position information from pupil position tracing module
Afterwards, the luminescence unit of correspondence position in addressable light source assembly is lighted.Signal processing module is received to be extracted from synchronizing signal
The luminescence unit in addressable light source assembly is lighted in the image display panel synchronizing signal of module, timesharing.When showing right image, only
The luminescence unit for having corresponding beholder's right eye is lit, i.e., beholder can only see right image；Similarly, when showing left image,
The luminescence unit for only corresponding to beholder's left eye is lit, i.e., beholder can only see left image.
Based on above general principle, described symmetrical adjustable backlight structure (such as Fig. 1) includes symmetrical adjustable optical group
Part and addressable light source assembly.In this embodiment, addressable optical module is made up of a series of highlighted LED close-packed arrays
(such as Figure 11), coordinates drive circuit to realize any LED light on and off.The light sent from highlighted LED, can be with by condenser (2)
Compression of the light in YZ planes is realized, the compression (such as Fig. 4) of light is realized using prism mirror in this embodiment, by diverging
Light is compressed into nearly directional light.The leaded light device (3,6) that light through overcompression is entered in guide-lighting module, in this embodiment
Middle use light guide plate, transmitting principle (such as Fig. 5) using its total reflection prism realizes the lossless propagation of light.Light is from light guide plate
(4,5) are entered in triangular prism, the upset of radiation direction is realized, finally sent from triangular prism (7).
In this embodiment, the light sent from guide-lighting module, which passes through spectroscope, realizes the separation of light, half
Light projects speculum above, and light is realized in specific range by the reflection of refractive power speculum after light upset
Convergence；Similarly, the light of half projects following speculum.Three lens are fixed with vertical mechanical structure, are passed through
Lens switching device can be such that different lens are in light path.The application of lens switching device, has reached different optics effects
Really, stereoeffect can be watched in different distance by realizing beholder.The lens used are converged for Fresnel Lenses.Pass through two kinds
The combination of Fresnel Lenses, realizes convergence of the light in different distance.Two kinds of Fresnel Lenses combinations are equivalent to single luxuriant and rich with fragrance alunite
The effect of your lens, is illustrated with single Fresnel Lenses lens below.
Highlighted LED (1) is placed in one times of focal length of Fresnel Lenses, the virtual image is formed a long way off by Fresnel Lenses.Point
The difference of bright LED location, the position of the virtual image is also different (such as Fig. 7).Virtual image image distance has following relation with object distance U：
During wherein f is the focal length of Fresnel Lenses, this embodiment, the parameter of Fresnel Lenses 15 and Fresnel Lenses 16
Identical, the focal length of Fresnel Lenses 9, Fresnel Lenses 10 and Fresnel Lenses 11 is different.By adjusting lens switching dress
(such as Fig. 8) is put, different Fresnel Lenses combinations is realized, light is converged in different distances, many distance viewings are reached
Effect.As shown in figure 3, for the sake of simple, being illustrated with two kinds of distances, coordinate highlighted LED while regulation lens switching device,
Realize the convergence in different distance light.
In this embodiment, spectroscope (prism) is employed as light-splitting device (such as Fig. 9), point of light is realized
From greatly enhancing brightness uniformity.Light is propagated from both direction up and down, and by reflective mirror 13,14, Fresnel is saturating
Mirror 15,16, reflective mirror 17,18, realizes the upset of light.(such as Figure 10) is finally projected on refractive power speculum, it is aobvious by LCD
Show after device (20), realize the convergence of light.Synchronizing signal extraction module circuit is referred to the earlier application of the applicant.
In this embodiment, pupil position tracking module is made up of software and hardware.Hardware includes three different focals
Camera, different viewing distances are corresponded to respectively.The detection of candidate point is carried out using Adaboost algorithm, then uses and is based on
ASM (Active Shape Model) algorithm of SIFT feature carries out being accurately positioned for face.Its available algorithm is as follows：
1st, Face detection.Face detection method has the ASM Face detections based on SIFT feature.Traditional ASM algorithms are used
The half-tone information of local feature region carries out calculating mahalanobis distance, and fitting precision is not high, rotates poor robustness.Therefore SIFT is used
(Scale invariant features transform) feature as ASM algorithms local feature region.SIFT is a kind of based on space scale, to image
Scaling, the rotation image local feature that even affine transformation keeps constant describe operator, for the state change of face, scene institute
The environment and imaging equipment characteristic at place have good adaptability.
2nd, pupil position is tracked.Under normal circumstances, the change in location of pupil is unhappy, and pupil can be realized using this characteristic
The quick detection of position and prediction.Change this unhappy characteristic, the pupil that detection algorithm can be in previous frame using pupil position
Detected around hole site, reduce detection range., can be possible to pupil in next frame using the continuous position information of pupil
The position of appearance is predicted, and equally reduces detection range.Kalman algorithms, TLD algorithms are all conventional track algorithms.
In this embodiment, signal processing module uses AVR single chip, and it is mutual to track mould by serial ports and pupil position
Connection, is realized by winding displacement and synchronizing signal extraction module (such as Figure 12) and interconnected.Signal processing module is according to the pupil position received
Confidence ceases and video synchronizing information, highlighted LED light on and off in control addressable light source assembly.Specific system block diagram such as Figure 12.
The concrete scheme being related to not being described in detail is referred to the following patent application of the applicant (inventor)：
201310615833.4 pupil positioning methods based on hybrid projection, the 201310627291.2 pupil positions based on motion relevance
Put filtering method, 201310612559.5 tablet non-auxiliary stereo display devices and method.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention.Skill belonging to of the invention
Art has usually intellectual in field, in the scope for not departing from the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (4)
1. a kind of stereopsis check device using symmetrical adjustable backlight structure, it is characterized in that including symmetrical adjustable backlight dress
Put, pupil position tracking module, synchronizing signal extraction module, signal processing module, image display panel；Symmetrical adjustable backlight dress
Put including symmetrical adjustable optical component, addressable light source assembly；Wherein, symmetrical adjustable optical component includes guide-lighting module again
With symmetrical adjustable imaging modules, guide-lighting module includes：Condenser, leaded light device and triangular prism, symmetrical adjustable imaging mould
Group (M) includes：Lens, lens switching device, enocscope, spectroscope and refractive power speculum；Signal processing module is according to receiving
Pupil position information and video synchronization signal, control adjustable backlight structure in addressable light source assembly；In display left figure
While picture, signal processing module lights corresponding luminescence unit according to pupil of left eye positional information, realizes light in left eye
Converged at pupil；While right image is shown, signal processing module will light single accordingly according to pupil of right eye positional information
Member is lighted, and realizes that light is converged at pupil of right eye；The conduction of light is realized using guide-lighting module, from addressable light source assembly
The light sent, by the guide-lighting module being made up of condenser, leaded light device, triangular prism；The light sent from guide-lighting module
The separation of light is realized by spectroscope, the light of half projects refractive power speculum above, the half light after light splitting
Reflecting focal is carried out by refractive power speculum；Second half light projects following refractive power speculum reflecting focal；Guide-lighting mould
The upright position for the light path of light that group is sent is fixed with the lens or lens group and lens switching device of two to five different focals,
Different lens are made to be in the light path of light by lens switching device；Symmetrical adjustable imaging modules realize different distance
Corresponding lens combination；
The light for being sent addressable light source assembly with symmetrical expression backing structure pools viewing window in some distance；In difference
Viewing distance, viewing window width is with luminescence unit length into fixed proportionate relationship, and proportionality constant is β1, β2, β3, that is, distinguish
Represent the proportionality constant of different distance；
<mrow>
<mfrac>
<mi>W</mi>
<mi>w</mi>
</mfrac>
<mo>=</mo>
<mfrac>
<mi>T</mi>
<mi>t</mi>
</mfrac>
<mo>=</mo>
<mi>&beta;</mi>
</mrow>
In above formula, W represents to watch the width of window, and w represents the width of luminescence unit, T represent between two viewing windows away from
From t represents the distance between two luminescence units.
2. the stereopsis check device according to claim 1 using symmetrical adjustable backlight structure, it is characterized in that described
Symmetrical adjustable backlight structure, provide synchronous backlight for image display panel；Adjust the lens in symmetrical adjustable optical component
Switching device, realizes the different lens combinations in symmetrical adjustable imaging modules, the light for coordinating addressable light source assembly to send
Line, realizes convergence in diverse location after symmetrical adjustable optical component and forms viewing window, thus beholder can
To watch stereoeffect in different distances.
3. the stereopsis check device according to claim 1 using symmetrical adjustable backlight structure, it is characterized in that using
After synchronizing signal extraction module, the synchronizing signal for extracting video, signal is arranged and denoising.
4. the stereopsis check device according to claim 1 using symmetrical adjustable backlight structure, it is characterized in that symmetrically
Adjustable backlight structure, using addressable light source assembly；Signal processing module receives the pupil from pupil position tracing module
After positional information, the luminescence unit of correspondence position in addressable light source assembly is lighted；Signal processing module, which is received, carrys out motor synchronizing
The luminescence unit in addressable light source assembly is lighted in the image display panel synchronizing signal of signal extraction module, timesharing；It is right in display
During image, the luminescence unit for only corresponding to beholder's right eye is lit, i.e., beholder can only see right image；Similarly, in display
During left image, the luminescence unit for only corresponding to beholder's left eye is lit, i.e., beholder can only see left image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439976.3A CN105049833B (en) | 2015-07-23 | 2015-07-23 | A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439976.3A CN105049833B (en) | 2015-07-23 | 2015-07-23 | A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105049833A CN105049833A (en) | 2015-11-11 |
| CN105049833B true CN105049833B (en) | 2017-09-26 |
Family
ID=54455980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510439976.3A Active CN105049833B (en) | 2015-07-23 | 2015-07-23 | A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105049833B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291960A (en) * | 2016-10-25 | 2017-01-04 | 南京大学 | The stereopsis inspection method of energy many distances viewing and device |
| CN106419827A (en) * | 2016-10-31 | 2017-02-22 | 南京大学 | Multipurpose visual acuity inspection device adopting adjustable light path |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433456B (en) * | 2008-12-12 | 2010-11-24 | 深圳大学 | Intelligent type digital type synoptophore |
| JP4888579B2 (en) * | 2010-04-21 | 2012-02-29 | パナソニック電工株式会社 | Visual function inspection device |
| US8939579B2 (en) * | 2011-01-28 | 2015-01-27 | Light Prescriptions Innovators, Llc | Autofocusing eyewear, especially for presbyopia correction |
| CN102499626B (en) * | 2011-12-19 | 2013-07-31 | 东南大学 | Stereoscopic vision flickering perception test device |
| CN103605968A (en) * | 2013-11-27 | 2014-02-26 | 南京大学 | Pupil locating method based on mixed projection |
| CN104597608B (en) * | 2015-01-07 | 2017-07-07 | 南京大学 | The directive property backing structure and method of the LED-based three-dimensional display without auxiliary equipment |
-
2015
- 2015-07-23 CN CN201510439976.3A patent/CN105049833B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105049833A (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102045577B (en) | Observer tracking system and three-dimensional stereo display system for three-dimensional stereo display | |
| US10554960B2 (en) | Unassisted stereoscopic display device using directional backlight structure | |
| CN102123291B (en) | Intelligent naked-eye stereoscopic display system and control method thereof | |
| US9204140B2 (en) | Display device and display method | |
| KR101324440B1 (en) | Method of controlling view of stereoscopic image and stereoscopic image display using the same | |
| CN106131536A (en) | A kind of bore hole 3D augmented reality interactive exhibition system and methods of exhibiting thereof | |
| CN104597608B (en) | The directive property backing structure and method of the LED-based three-dimensional display without auxiliary equipment | |
| JPH09121370A (en) | Stereoscopic television device | |
| WO2003042757A1 (en) | System and method for visualization of stereo and multi aspect images | |
| CN211128024U (en) | 3D display device | |
| US6788274B2 (en) | Apparatus and method for displaying stereoscopic images | |
| JP4819114B2 (en) | Stereoscopic image display device | |
| CN105635720A (en) | Stereo vision camera with double-lens single sensor | |
| CN105049833B (en) | A kind of stereopsis inspection method and device using symmetrical adjustable backlight structure | |
| CN106291960A (en) | The stereopsis inspection method of energy many distances viewing and device | |
| CN106526878A (en) | Multidimensional free stereoscopic display device | |
| CN103051909B (en) | For the masking-out conversion tracing of human eye method of bore hole 3D display | |
| CN111308698A (en) | Directional display screen, induction type three-dimensional display device and display method thereof | |
| CN114898440A (en) | Driving method of liquid crystal grating, display device and display method thereof | |
| JP2001218231A (en) | Device and method for displaying stereoscopic image | |
| CN2906685Y (en) | Three-dimensional digital camera | |
| JP2004258594A (en) | Three-dimensional image display device realizing appreciation from wide angle | |
| Xue et al. | Multi-user autostereoscopic 2D/3D switchable flat-panel display | |
| CN102223557B (en) | Naked viewing omni-directional stereo imaging system and method | |
| CN110572634A (en) | Naked eye 3D projection display system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |