The content of the invention
The embodiments of the invention provide a kind of display device, it is intended to which how solution solves 3D rendering display device structure complexityThe problem of inconvenient for use.In order to which some aspects of the embodiment to disclosure have a basic understanding, shown below is simpleSummarize.The summarized section is not extensive overview, nor to determine key/critical component or describe the guarantor of these embodimentsProtect scope.Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
First aspect according to embodiments of the present invention, there is provided a kind of display device, including：Light engine, left decoupling element,Right decoupling element and shunt, light engine is used to produce image stream, and by image stream directive shunt, image stream includes being adapted toThe left image stream of user's left eye and the right image stream for being adapted to user's right eye；Shunt is used for when image stream is left image stream,Left image stream is projeced into by left decoupling element by waveguide, and when image stream is right image stream, by waveguide by right image streamIt is projeced into right decoupling element；Left decoupling element, for by the left image stream decoupling in waveguide；Right decoupling element, for by waveguideInterior right image stream decoupling.
In the present embodiment, image stream caused by light engine includes left image stream and right image stream, and left image stream is adapted toThe left eye of user, right image stream are adapted to the right eye of user, and when image stream is left image stream, shunt is used for left imageLeft decoupling element is projeced into by waveguide stream, makes the left eye of user can only see the left image stream for being adapted to user's left eye, works as figureWhen picture stream is right image stream, shunt is used to right image stream is projeced into right decoupling element by waveguide so that the right eye of userRight image stream can only be observed, so as to form stereoscopic vision.Therefore a light engine is only needed to produce in the present embodimentMeet that different image streams can be projeced into difference respectively by image stream, a shunt and the waveguide of user's eyes simultaneouslyDecoupling element, i.e., only need a set of display device to project different image to user's eyes in the present embodiment, so as toThe design difficulty and complexity of display device are reduced, makes the structure of display device simpler light, is user-friendly.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, notCan the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present inventionExample, and for explaining principle of the invention together with specification.
Fig. 1 is a kind of structural representation of display device according to an exemplary embodiment；
Fig. 2 is the structural representation of another display device according to an exemplary embodiment；
Fig. 3 is the structural representation of another display device according to an exemplary embodiment；
Fig. 4 is the structural representation of another display device according to an exemplary embodiment；
Fig. 5 is the structural representation of another display device according to an exemplary embodiment；
Fig. 6 is a kind of schematic diagram of HPDLC layers according to disclosed in an exemplary embodiment；
Fig. 7 is a kind of display process schematic of display image stream according to an exemplary embodiment.
Description of reference numerals：10th, light engine；20th, shunt；21st, the first HPDLC layers；22nd, the 2nd HPDLC layers；23rd, it is anti-Penetrate mirror；24th, drive mechanism；31st, left decoupling element；32nd, right decoupling element；40th, waveguide；41st, left waveguide；42nd, right waveguide.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art toPut into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional, andAnd the order of operation can change.The part of some embodiments and feature can be included in or replace other embodimentsPart and feature.The scope of embodiment of the present invention includes the gamut of claims, and the institute of claimsThere is obtainable equivalent.Herein, each embodiment can individually or generally be represented that this is only with term " invention "It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the scope of the applicationFor any single invention or inventive concept.Herein, such as first and second or the like relational terms are used only for oneEntity or operation make a distinction with another entity or operation, exist without requiring or implying between these entities or operationAny actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusiveProperty includes, so that process, method or equipment including a series of elements not only include those key elements, but also includingThe other element being not expressly set out.Each embodiment herein is described by the way of progressive, and each embodiment stressesBe all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementingFor method, product etc. disclosed in example, due to its with embodiment disclosed in method part it is corresponding, so the comparison of description is simpleSingle, related part is referring to method part illustration.
First embodiment of the invention discloses a kind of display device, as shown in Figures 2 to 5, including：Light engine 10, left decouplingElement 31, right decoupling element 32, waveguide 40 and shunt 20；Light engine 10 is used to produce image stream, and image stream directive is dividedRoad device 20, image stream include being adapted to the left image stream of user's left eye and are adapted to the right image stream of user's right eye, shunt 20For when image stream is left image stream, left image stream to be projeced into left decoupling element 31 by waveguide 40, and when image stream isDuring right image stream, right image stream is projeced into by right decoupling element 32 by waveguide 40；Left decoupling element 31, for by waveguide 40Left image stream decoupling；Right decoupling element 32, for by the right image stream decoupling in waveguide 40.
In the present embodiment, image stream caused by light engine 10 includes left image stream and right image stream, and left image stream adapts toIn the left eye of user, right image stream is adapted to the right eye of user, and when image stream is left image stream, shunt 20 is used for a left sideImage is projeced into left decoupling element 31 by the stream of waveguide 40, makes the left eye of user can only see the left image for being adapted to user's left eyeStream, when image stream is right image stream, shunt 20 is used to right image stream is projeced into right decoupling element 32 by waveguide 40, makesRight image stream can only be observed by obtaining the right eye of user, so as to form stereoscopic vision.Therefore a light is only needed in the present embodimentEngine 10 can produce while meet the image stream of user's eyes, a shunt 20 and a waveguide 40 can be different figuresDifferent decoupling elements is projeced into respectively as flowing, i.e., only needs a set of display device to be thrown to user's eyes in the present embodimentDifferent images is penetrated, so as to reduce the design difficulty of display device and complexity, makes the structure of display device simplerIt is light, it is user-friendly.
Volume holographic grating includes fixed volume holographic grating and switchable type volume holographic grating, switchable type volume holographic gratingHolographic polymer dispersed liquid crystal (English full name can be used：Holographic polymer dispersed liquidCrystal, english abbreviation：HPDLC) prepare.The prepolymer that HPDLC is made up of liquid crystal, polymer monomer, it is concerned with two beamsUnder light irradiation, the phase separation that is triggered using photo polymerization, formed the rich polymers area corresponding with the bright dark fringe of interference fringe andThe periodic arrangement that rich solution crystalline region is alternately present.As shown in fig. 6, periodic refractive index tune when being not added with electric field, in HPDLC be presentSystem, Bragg grating is formed, meet that the incident light of Bragg diffraction conditions is projected with first-order diffraction direction.When applying electric field, rich solutionCrystalline region liquid crystal molecule will rearrange along electric field, when its ordinary refraction index matches with the basic refractive index of polymer, gratingRefractive index will become uniformity, incident light will be transmitted away directly, and HPDLC turns into one piece of transparent medium.
In the above-described embodiments, the embodiment of shunt 20 has a variety of, as an alternative embodiment, such as Fig. 2Shown in Fig. 3, shunt includes the first HPDLC layers 21, the 2nd HPDLC layers 22 and the liquid-crystal controller that are stacked (in figure notShow), light engine 10 is additionally operable to the HPDLC layers 21 of image stream directive the first and the 2nd HPDLC layers 22；The He of first HPDLC layers 212nd HPDLC layers 22 are axially vertical with light engine 10, and the diffraction light direction of the first HPDLC layers 21 and the 2nd HPDLC layers 22Conversely；Liquid-crystal controller, apply electric field for controlling to the first HPDLC layers 21 and the 2nd HPDLC layers 22.
Specifically, as shown in Fig. 2 when image stream caused by light engine 10 is left image stream, liquid-crystal controller is to secondHPDLC layers 22 apply electric field, therefore the 2nd HPDLC layers 22 are all-transparent, not reflection light, and the first HPDLC layers 21 are by left imageStream passes through the left decoupling element 31 of the directive of waveguide 40.
Specifically, as shown in figure 3, when image stream caused by light engine 10 is right image stream, liquid-crystal controller is to firstHPDLC layers 21 apply electric field, therefore the all-transparent of the first HPDLC layers 21, not reflection light, and the 2nd HPDLC layers 22 are by right image streamPass through the right decoupling element of the directive of waveguide 40.
Optionally, in the above-described embodiments, liquid-crystal controller is additionally operable to, and in first time period, the first HPDLC layers are appliedAdded electric field；In second time period, electric field is applied to the 2nd HPDLC layers.It is further alternative, first time period and the second timeSection is equal, and is equal to the inverse of image stream frame per second, therefore left image stream or right image stream are incident upon user's left eye or right eyeTime is equal, fully ensures that the display effect of 3D rendering.Further optional, the frame per second of image stream is more than or equal to 20fps.In simple eye viewing image stream, in order to ensure the fluency of user experience, the frame per second of image stream is sufficiently high.Study tableBright, when image stream frame per second reaches the effect that 10-16fps just has been carried out continuous pictures, in this programme, light engine 10 will replaceDifferent image streams, control the frame per second of image stream to be more than or equal to the fluency that 20fps can ensure display image, improve userViewing experience.
As the another embodiment of shunt 20, as shown in Figure 4 and Figure 5, shunt 20 includes speculum 23, is used forThe drive mechanism 24 and drive control device (not shown) for driving speculum 23 to rotate, light engine 10 are additionally operable to throw image streamPenetrate in speculum 23；Drive control device is additionally operable to control drive mechanism 24 to drive speculum 23 to throw left image stream by waveguide 40Penetrate and drive speculum 23 that right image stream is projeced into right decoupling by waveguide 40 in left decoupling element 31, and control drive mechanism 24Element 32.
Optionally, in the above-described embodiments, waveguide 40 includes left waveguide 41 and right waveguide 42, and speculum 23 is used to pass through a left sideWaveguide 41 is by the left decoupling element 31 of left image stream directive；Speculum 23 is additionally operable to the right coupling of right image stream directive by right waveguide 42Go out element 32.
Optionally, in any of the above-described embodiment, drive control device is additionally operable to, and in first time period, controls driving machineStructure 24 drives speculum 23 by waveguide 40 by the left decoupling element 31 of left image stream directive；In second time period, control drivingMechanism 24 drives speculum 23 by waveguide 40 by the right decoupling element 32 of right image stream directive.
Specifically, as shown in figure 4, when the image stream that light engine 10 generates is left image stream, drive control device control is drivenMotivation structure 24 drives speculum 23 to turn to direction as shown in Figure 6, or other it is any can be by the left waveguide 41 of left image stream directiveDirection, make speculum 23 that left image stream is passed through into the left left decoupling element of the directive of waveguide 41.
Specifically, as shown in figure 5, when the image stream that light engine 10 generates is right image stream, drive control device control is drivenMotivation structure 24 drives speculum 23 to turn to direction as shown in Figure 7, or other it is any can be by the right waveguide 42 of right image stream directiveDirection, make speculum 23 that right image stream is passed through into the right right decoupling element of the directive of waveguide 42.
Optionally, in any of the above-described embodiment, light engine 10 is additionally operable to generate left image stream in first time period,Generation right image stream in second time period.Further alternative, first time period and second time period are equal, and are equal to imageThe inverse of frame per second is flowed, therefore left image stream or right image stream are incident upon user's left eye or the time of right eye is equal, fully ensures that 3DThe display effect of image.
Optionally, in any of the above-described embodiment, light engine 10 is additionally operable to alternately produce left image stream and right image stream.In the present embodiment, as shown in fig. 7, light engine 10 alternately produces left image stream and right image stream, making the eyes of user can seeImage stream, the 3D rendering of formation is more three-dimensional, improves Consumer's Experience.It is further alternative, as shown in fig. 7, left image stream is aobviousShow that the display time of time and right image stream is equal, and be equal to the inverse of image stream frame per second, therefore left image stream or right imageStream is incident upon user's left eye or the time of right eye is equal, fully ensures that the display effect of 3D rendering.
It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings,And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claimSystem.