CN107367838A - A kind of wear-type virtual reality stereoscopic display device based on optical field imaging - Google Patents
A kind of wear-type virtual reality stereoscopic display device based on optical field imaging Download PDFInfo
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- CN107367838A CN107367838A CN201610316897.8A CN201610316897A CN107367838A CN 107367838 A CN107367838 A CN 107367838A CN 201610316897 A CN201610316897 A CN 201610316897A CN 107367838 A CN107367838 A CN 107367838A
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- lcd screen
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- eyepiece
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- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 238000003384 imaging method Methods 0.000 title claims abstract description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 26
- 239000010409 thin film Substances 0.000 claims abstract description 5
- 239000010408 film Substances 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 208000003464 asthenopia Diseases 0.000 abstract description 4
- 206010028813 Nausea Diseases 0.000 abstract description 3
- 208000002173 dizziness Diseases 0.000 abstract description 3
- 230000008693 nausea Effects 0.000 abstract description 3
- 210000001508 eye Anatomy 0.000 description 20
- 210000005252 bulbus oculi Anatomy 0.000 description 3
- 210000000695 crystalline len Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 210000004276 hyalin Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 210000000162 simple eye Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
A kind of wear-type virtual reality stereoscopic display device based on optical field imaging, including：Wear sandwich type element and be flush-mounted in drive circuit board, TFT LCDs and the eyepiece for magnifying video image of housing successively, the TFT LCDs includes liquid crystal display die set and backlight, the liquid crystal display die set and eyepiece are located in same optical axis, liquid crystal display die set includes all being the first LCD screen and the second LCD screen being made up of liquid crystal layer and thin film transistor (TFT), and the frame member for being used for separating is provided between two LCD screens；First LCD screen nearer apart from eyepiece show to form the first virtual representation, and the second LCD screen shows to form the second virtual representation, and the image distance of first virtual representation is shorter than the image distance of the second virtual representation.The present invention can eliminate the problems such as dizziness, nausea and visual fatigue that user occurs in use, be presented to more true, three-dimensional, depth of field experience the 4D immersive VR scenes of user one.
Description
Technical field
The present invention relates to virtual reality field of display devices, more particularly relates to a kind of wear-type virtual reality stereoscopic display device based on optical field imaging.
Background technology
Computing device, referring to PC, notebook computer, tablet personal computer, smart mobile phone etc., other can access the electronic equipment of internet.As what the processor chips and sensor chip of computing device developed makes rapid progress, augmented reality this two parts that people perceive to information and user caused by fusion electronic product to physical world are interested, slowly expedited the emergence of research and development and the technological evolvement of some electronic products or equipment based on integration technology.Computing device, the electronic product especially using wearable device as representative are just becoming more and more popular in the various aspects of the modern life.
By wearing perceived position, environment and the computing device of vital sign, user enhances experience of reality, such computing device is referred to as " wearable " equipment by we, wearable device is used to measure and analyzes the present position of user, environment and vital sign, and feedback user information and experience.Wearable device is by obtaining the geographical position of user, using Zhao cameras He ∕ or photoelectric sensor detect target in the user visual field, detect that user is listening and saying He ∕ or sensor using microphone, and the information on user surrounding environment is collected using various other sensors, to sense around user.More applications now are to carry out the real-time vital sign for detecting user with the wearable device of integral biosensor, then analyze the data that collect to be presented to the result detected by user.Wearable device product form is very abundant, the head mounted display worn including a kind of user（HMD）Wearable device.HMD is a kind of miniscope device being typically secured to close to eyes of user position, therefore HMD is also referred to as " nearly eye " display.HMD is divided into simple eye and eyes display according to display quantity.HMD generally covers figure caused by computer on the physical world that user perceives（For example, text, image, video etc.）.
And HMD traditional at present display screen is single fixation, that is object distance is fixed, therefore the focusing of human eye will not change during user watches image, human eye will soon feel visual fatigue, and the parallax of display content can allow the convergence distance of eyes to produce constantly change, the display focusing distance of this fixation and the binocular convergence distance changed at any time, the motion that both nerves can be caused connected are forcibly separating, and bring " focal length is disorderly " or " regulation conflict（Vergence-accommodation
conflict）", cause brain confusion reigned.These do not comply with the rule that nature human eye receives image, will cause the nausea symptom such as dizzy for a long time.
The content of the invention
The technical problems to be solved by the invention are to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of wear-type virtual reality stereoscopic display device based on optical field imaging.
The present invention solves the technical scheme that above-mentioned technical problem uses：A kind of wear-type virtual reality stereoscopic display device based on optical field imaging, including：Wear sandwich type element and be flush-mounted in drive circuit board, TFT LCDs and the eyepiece for magnifying video image of housing successively, the TFT LCDs includes liquid crystal display die set and backlight, the liquid crystal display die set and eyepiece are located in same optical axis, liquid crystal display die set includes all being the first LCD screen and the second LCD screen being made up of liquid crystal layer and thin film transistor (TFT), and the frame member for being used for separating is provided between two LCD screens；
First LCD screen nearer apart from eyepiece show to form the first virtual representation, and the second LCD screen shows to form the second virtual representation, and the image distance of first virtual representation is shorter than the image distance of the second virtual representation.
Preferably, colored filter and the first light polarizing film are sequentially provided with first LCD screen, the second light polarizing film, the first diffusion barrier, brightness enhancement film, the second diffusion barrier, light guide plate and reflectance coating are sequentially provided with the second LCD screen.
Preferably, the brightness enhancement film is provided with two layers.
Preferably, the eyepiece uses Fresnel lens.
Preferably, first LCD screen and the second LCD screen show the first virtual representation and the second virtual representation using time-division alternative expression.
Compared with prior art, beneficial effects of the present invention：The invention provides a kind of wear-type virtual reality stereoscopic display device based on optical field imaging, is applied available for fields such as 3D game, 3D video playbacks.Display screen of the present invention includes dual-layered liquid crystal screen, and traditional display screen only has one layer of LCD screen, therefore the present invention can eliminate user dizziness, nausea and the visual fatigue occurred during using wear-type virtual reality stereoscopic display device the problems such as, can be presented to more true, three-dimensional, depth of field experience the 4D immersive VR scenes of user one；The present invention carries out more times of amplifications by the image shown to smaller screen simultaneously, realizes the sharpening of video image and the big angle of visual field（field of view, FOV）Display.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used is briefly described in being described below to embodiment, wherein：
Fig. 1 is the cross-sectional view of present pre-ferred embodiments；
Fig. 2 is the TFT liquid-crystal displaying screen structure schematic diagrames of present pre-ferred embodiments；
Fig. 3 is the operation principle schematic diagram of present pre-ferred embodiments.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further.Cited such as " on ", " under ", "left", "right", " centre " and " one " term in preferred embodiment, only understanding for ease of narration, and it is not used to limit the enforceable scope of the present invention, its relativeness is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Fig. 1 and Fig. 2 are referred to, a kind of wear-type virtual reality stereoscopic display device based on optical field imaging designed in present pre-ferred embodiments, it is specifically included：Housing 10 and successively drive circuit board 50, TFT LCDs and the eyepiece 20 of fixed setting-in on the housing 10, housing 10 can be dressed on a user's head, eyepiece 20 uses Fresnel lens, for magnifying video image, eyepiece 20 faces the eyes of user, TFT LCDs is used to show video image, and TFT LCDs is mainly made up of liquid crystal display die set 30 and backlight 40, and liquid crystal display die set 30 and eyepiece 20 are located in same optical axis.
The structure of the liquid crystal display die set 30 of the present invention is different from traditional display module structure, and it uses dual-layered liquid crystal screen construction, and specifically, liquid crystal display die set 30 includes successively from top to bottom：First light polarizing film 301, colored filter 302, the first liquid crystal layer 303, first film transistor（TFT）304th, the second liquid crystal layer 305, the second thin film transistor (TFT)（TFT）306th, the second light polarizing film 307, the first diffusion barrier 308, two layers of brightness enhancement film 309, the second diffusion barrier 310, light guide plate 311 and reflectance coating 312, first liquid crystal layer 303 and first film transistor 304 constitute the first LCD screen 31, second liquid crystal layer 305 and the second thin film transistor (TFT) 306 constitute the second LCD screen 32, frame member 33 is provided between the first LCD screen 31 and the second LCD screen 32, the effect of frame member 33 is to be spaced two LCD screens so that is stayed between two LCD screens at regular intervals.The operation principle of TFT LCDs：Two LCD screen work are driven by drive circuit board 50, export treated different image or video simultaneously to two LCD screens, backlight 40 is used to light two LCD screens, makes its imaging.
When we are in the object in seeing a real world, eyes can produce two kinds of Natural regulation mechanism：
（1）Focus on.The crystalline lens of eyes is a biconvex hyaline tissue, and the focus that it can adjust eyeball optically focused when diopter makes to see far or see near can fall on the retina exactly, and at this moment the lenticular distance of object distance turns into focusing distance.
（2）Convergence.While each eye focuses on, two eyeballs can also receive image by rotary motion to same object, and the lenticular distance of intersection point to the eyeball of two an eye line is referred to as converging distance.
When people's real-world object soon, focus on and the distance of convergence is always equal.
Refer to Fig. 3, because the distance of two LCD screens and eyepiece 20 is different, therefore the image presented in human eye will produce certain visual difference away from, namely make one to think that the image distance oneself on nearer the first LCD screen 31 is nearer, the image distance oneself on the second LCD screen 32 farther out is farther out.A certain distance difference will be produced between the picture object that two LCD screens are presented in human eye, we are referred to as the depth of field, human eye is namely set to find out that the object distance in image oneself has point of distance, eyes are during image is watched, the focal length of eyes will carry out corresponding regulation according to different objects in image of interest and change, so it can be felt as snug as a bug in a rug with this stereoscopic display device viewing video image, unsuitable fatigue.
The content that two LCD screens are shown is by computer or high-performance image processor treated image or video, using left-right format（side by side）3D rendering content.Object in the display image of the first LCD screen 31 nearer apart from eyepiece 20 nearby is focused on clearly, and the object of distant place is fuzzy and dim, forms the first virtual representation 60；And the object of distant place is focused on clearly in the display image of the second LCD screen 32 farther out, object nearby is fuzzy and dim, forms the second virtual representation 70.Because the object distance between two LCD screens and eyepiece 20 is different, the image distance that two LCD screens are shown is also at a distance of larger, so user is when watching video image, the image distance of first virtual representation 60 is shorter than the image distance of the second virtual representation 70, therefore in order to see different far and near objects clearly, human eye will automatically adjust diopter to adapt to, so user with this equipment when watching video image, focus on and the distance of convergence is always corresponding, it is not easy to the ill symptomses such as visual fatigue occur.
After backlight 40 is lighted by driving, first LCD screen 31 and the second LCD screen 32 can be operated by the way of the time-division, i.e., in odd number moment, the display image of the first LCD screen 31, the state of second LCD screen 32 is full impregnated, and the image of the first LCD screen 31 is passed through；At the even number moment, the state of first LCD screen 31 is full impregnated, light the second LCD screen 32, the display image of second LCD screen 32, according to the eye storage characteristic of human eye, the content of odd number moment and the display of even number moment can be superimposed completely, form a 4D light field display effect with the depth of field, and when the refreshing frequency of two LCD screens reached for 60 Zheng ∕ seconds（fps）, the even 120 Zheng ∕ seconds 90 Zheng ∕ seconds when, following that it is more than the second even can to reach 120 Zheng ∕, interim card and sunset glow phenomenon would not occur in the image so shown.
The display screen structure scheme of the present invention can be used for the product design of micro-display, and wherein TFT LCDs can also have the display screen that may be designed to two display screens from other as needed, include but is not limited to：The attached silicon of liquid crystal, also referred to as liquid crystal on silicon（LCoS）Display device；Liquid crystal display（LCD）Panel etc..
It is described above, only it is presently preferred embodiments of the present invention, any formal limitation not is made to the present invention, any those skilled in the art, without departing from the scope of the present invention, according to technical spirit any brief introduction modification, equivalent variations and the modification made to above example of the present invention, in the range of still falling within technical solution of the present invention.
Claims (5)
1. a kind of wear-type virtual reality stereoscopic display device based on optical field imaging, including：Wear sandwich type element（10）And the drive circuit board of housing is flush-mounted in successively（50）, TFT LCDs and the eyepiece for magnifying video image（20）, the TFT LCDs includes liquid crystal display die set（30）And backlight（40）, it is characterised in that the liquid crystal display die set and eyepiece are located in same optical axis, and liquid crystal display die set includes all being the first LCD screen being made up of liquid crystal layer and thin film transistor (TFT)（31）With the second LCD screen（32）, the frame member for being used for separating is provided between two LCD screens（33）；
First LCD screen nearer apart from eyepiece shows to form the first virtual representation（60）, the second LCD screen shows to form the second virtual representation（70）, the image distance of first virtual representation is shorter than the image distance of the second virtual representation.
2. the wear-type virtual reality stereoscopic display device according to claim 1 based on optical field imaging, it is characterised in that first LCD screen（31）On be sequentially provided with colored filter（302）With the first light polarizing film（301）, the second LCD screen（32）Under be sequentially provided with the second light polarizing film（307）, the first diffusion barrier（308）, brightness enhancement film（309）, the second diffusion barrier（310）, light guide plate（311）And reflectance coating（312）.
3. the wear-type virtual reality stereoscopic display device according to claim 2 based on optical field imaging, it is characterised in that the brightness enhancement film（309）It is provided with two layers.
4. the wear-type virtual reality stereoscopic display device according to claim 1 based on optical field imaging, it is characterised in that the eyepiece（20）Using Fresnel lens.
5. the wear-type virtual reality stereoscopic display device based on optical field imaging according to any one of Claims 1-4, it is characterised in that first LCD screen（31）With the second LCD screen（32）First virtual representation is shown using time-division alternative expression（60）With the second virtual representation（70）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316897.8A CN107367838A (en) | 2016-05-12 | 2016-05-12 | A kind of wear-type virtual reality stereoscopic display device based on optical field imaging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610316897.8A CN107367838A (en) | 2016-05-12 | 2016-05-12 | A kind of wear-type virtual reality stereoscopic display device based on optical field imaging |
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| CN201610316897.8A Pending CN107367838A (en) | 2016-05-12 | 2016-05-12 | A kind of wear-type virtual reality stereoscopic display device based on optical field imaging |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873971A (en) * | 2019-11-29 | 2020-03-10 | 维沃移动通信有限公司 | Wearable device and light filtering method thereof |
| WO2021072154A1 (en) * | 2019-10-11 | 2021-04-15 | Vision For Mars Technologies Llc | Visual field test device |
| WO2023173907A1 (en) * | 2022-03-14 | 2023-09-21 | 惠州Tcl移动通信有限公司 | Imaging apparatus and method, and augmented or virtual reality device |
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