Invention content
In view of this, the purpose of the present invention is to provide a kind of nearly eye of compact of large visual field high resolution display systemsSystem, to solve the above problems.
To achieve the above object, the present invention provides the following technical solutions：
Present pre-ferred embodiments provide a kind of near-eye display system, including image display device, array image-forming device andLiquid crystal optical switch, the array image-forming device include at least two imaging minute surfaces, each imaging lens face paste have can thoroughly can anti-film, instituteIt includes at least two sub- liquid crystal optical switches to state liquid crystal optical switch, and each imaging minute surface is corresponding with every sub- liquid crystal optical switch；
Described image display device is used to be sequentially output at least two beam subgraph light of image to be displayed, wherein every widthImage to be displayed includes at least two subgraphs to be shown, and every subgraph to be shown is corresponding with per beam subgraph light, per beamSubgraph light is corresponding with every sub- liquid crystal shutter；
The imaging minute surface is used to carry out reflection convergence to incident subgraph light；
The sub- liquid crystal shutter is used in a branch of subgraph corresponding with the sub- liquid crystal shutter of described image display device outputIt is in open state when as light, makes the subgraph light corresponding with the sub- liquid crystal shutter that described image display device exports by instituteStating after imaging mirror-reflection is assembled passes through the sub- liquid crystal shutter that can form subgraph to be shown in human eye；
The sub- liquid crystal shutter is additionally operable to export in described image display device a branch of not corresponding with the sub- liquid crystal shutterIt is closed when subgraph light；
After described image display device has exported all subgraph light of image to be displayed, each sub- liquid is passed throughThe subgraph to be shown that crystalline substance switch is formed in human eye can visually be spliced into the image to be displayed in user；
Real world light passes through the array image-forming device and liquid crystal optical switch to enter human eye and forms ambient image.
Optionally, described image display device includes light source module group and image-display units, and the light source module group includes shiningMingguang City source and beam shaping bundling device, the beam shaping bundling device include collimator and extender shaping component and combined beam unit；
The lighting source, for providing multi beam illuminating ray；
The collimator and extender shaping component, for carrying out collimator and extender shaping to every beam illuminating ray；
The combined beam unit, for synthesizing the light beam after the collimator and extender shaping component collimator and extender Shape correctionSingle beam；
Described image display unit, the energy of the single beam for being exported to the combined beam unit is modulated to be waited for being formedShow the image light of information.
Optionally, described image display device includes light source module group and scanning means；
The light source module group, for providing collimation light pencil；
The scanning means, the light for being emitted to the light source module group carry out high speed deflection to form image light.
Optionally, the scanning means is MEMS scanning means.
Optionally, described image display device includes light source module group, polarization spectro component and image-display units, the lightSource module includes lighting source and collimator and extender shaping component；
The lighting source, for providing illuminating ray；
The collimator and extender shaping component, for carrying out collimator and extender shaping to the illuminating ray；
The polarization spectro component, it is vertical that non-polarized light for collimator and extender shaping component outgoing is divided into two beamsLine polarisation, wherein P polarisations pass through completely, and S polarisations are reflected with 45 degree of angles；
Described image display unit, for carrying out light energy to S-polarization light beam according to the gray scale of subgraph to be shown at this timeModulation, is converted to P polarization light beam, P polarization light beam is again passed through polarization spectro through the modulated light beam of described image display unitEnter in array image-forming device after component.
Optionally, described image display device further includes light orientation element, and the light orientation element is arranged in the collimationThe emitting light path for expanding shaping component, for choosing special angle light beam.
Optionally, the near-eye display system further includes controllable back layer.
Optionally, the imaging minute surface is diffraction plane or continuous curved surface.
Optionally, the energy of the subgraph linear light line corresponding with each sub- liquid crystal shutter of described image display device output withIts corresponding sub- liquid crystal shutter increases away from image display device distance and is increased.
Optionally, the reflectivity of the imaging minute surface increases along the direction far from image display device.
Near-eye display system provided by the invention passes through to image display device, array image-forming device and liquid crystal optical switchIngenious integrated and design, is sequentially output at least two beam subgraph light of an image to be displayed, passes through each imaging mirror-reflectionBeing focused at human eye formation subgraph to be shown corresponding with per beam subgraph light is made using persistence of vision effect in human eye shapeAt subgraph to be shown can visually be spliced into image to be displayed in user.Therefore, the field angle of the near-eye display systemEqual to the sum of the field angle for all imaging minute surfaces that array image-forming device includes.Also, the resolution ratio of every subgraph to be shownIt can identical and equal to image to be displayed resolution ratio.Therefore the near-eye display system have big view field image show while haveHave a high-resolution, and relative to the near-eye display system volume applied to augmented reality with traditional visual system compared withIt is small.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation describes.Obviously, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.It is logicalThe component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimedThe scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment of the present invention, people in the artThe every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang YiIt is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.In description of the inventionIn, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply oppositeImportance.
Near-eye display system 1 provided in an embodiment of the present invention, can be applied to HMD, (Head Mount Display, wearFormula visual device), the augmented realities equipment such as intelligent glasses, be not limited herein.
Referring to FIG. 1, Fig. 1 is a kind of block diagram of near-eye display system 1 provided in an embodiment of the present invention.The nearly eyeDisplay system 1 includes image display device 10, array image-forming device 30 and liquid crystal optical switch 50.The array image-forming device 30 wrapsInclude at least two imaging minute surfaces 31, it is each be imaged minute surface 31 post can thoroughly can anti-film, the liquid crystal optical switch 50 includes at least twoA sub- liquid crystal optical switch 51, each imaging minute surface 31 are corresponding with every sub- liquid crystal optical switch 51.
Described image display device 10 is used to be sequentially output at least two beam subgraph light of image to be displayed.Wherein, oftenWidth image to be displayed includes at least two subgraphs to be shown, and every subgraph to be shown is corresponding with per beam subgraph light.OftenBeam subgraph light is corresponding with every sub- liquid crystal shutter.Pair image to be displayed is the virtual image that near-eye display system 1 is shown, i.e.,The virtual display of the artificial additional information of real world.In order to improve display effect, the resolution of every subgraph to be shownRate can be identical.And the size of every subgraph to be shown can be the same or different.
The imaging minute surface 31 is used to carry out reflection convergence to incident subgraph light.Since each imaging minute surface 31 pastesHave can thoroughly can anti-film, therefore the imaging minute surface 31 be additionally operable to incident subgraph light carry out across, can continue toNext imaging minute surface 31 transmits.
The sub- liquid crystal shutter is used to export a branch of son corresponding with the sub- liquid crystal shutter in described image display device 10Open state is in when image light, the subgraph light corresponding with the sub- liquid crystal shutter for making described image display device 10 exportPass through the sub- liquid crystal shutter that can form subgraph to be shown in human eye after being assembled by the imaging minute surface 31 reflection.The sub- liquidCrystalline substance switch be additionally operable to described image display device 10 export it is a branch of with the sub- liquid crystal shutter not corresponding subgraph light when atIn closed state, the subgraph light not corresponding with the sub- liquid crystal shutter exported to avoid described image display device 10 is by instituteIt states and enters human eye across the sub- liquid crystal shutter after the imaging reflection of minute surface 31 is assembled.Wherein, the sub- liquid crystal shutter can be liquidA part for crystal light shutter 50 can also be an independent small size liquid crystal optical switch 50.With the development of technology, when electroluminescentWhen the switching rate of electro-chromic switch reaches liquid crystal optical switch 50, can also use electrochromism switch in place liquid crystal optical switch 50 and/Or sub- liquid crystal optical switch 51.
After described image display device 10 has exported all subgraph light of image to be displayed, each son is passed throughThe subgraph to be shown that liquid crystal shutter is formed in human eye can visually be spliced into the image to be displayed in user.Specific implementationWhen, every figure to be shown of frequency and output of every beam subgraph light can be exported by adjusting described image display device 10The time interval of picture, and coordinate the on off state for adjusting every sub- liquid crystal shutter, utilize persistence of vision principle, so that it may so as to pass throughThe subgraph to be shown that each sub- liquid crystal shutter is formed in human eye can visually be spliced into the figure to be shown in userPicture.
Real world light passes through the array image-forming device 30 and liquid crystal optical switch 50 to enter human eye and forms environmentImage.
Near-eye display system 1 provided in an embodiment of the present invention passes through to image display device 10,30 and of array image-forming deviceThe ingenious integrated and design of liquid crystal optical switch 50, is sequentially output at least two beam subgraph light of an image to be displayed, by everyA reflection of imaging minute surface 31 is focused at human eye and forms subgraph to be shown corresponding with per beam subgraph light, utilizes persistence of visionEffect enables the subgraph to be shown formed in human eye to be visually spliced into image to be displayed in user.Therefore, the nearly eye is aobviousShow that the field angle of system 1 is equal to the sum of the field angle for all imaging minute surfaces 31 that array image-forming device 30 includes.Also, every width waits forShow that the resolution ratio of subgraph can identical and equal to image to be displayed resolution ratio.Therefore the near-eye display system 1 have regard greatlyThere is high-resolution while field picture is shown, and be applied to the close of augmented reality relative to traditional visual systemEye display system small volume.
Since image display device 10, the structure of array image-forming device 30 and liquid crystal optical switch 50 and set-up mode can haveIt is a variety of.Therefore, foregoing invention is based on to conceive, the concrete structure of near-eye display system 1 may be, but not limited to, as Fig. 2, Fig. 3,Shown in Fig. 8, Fig. 9 and Figure 10.It should be understood that for ease of description, Fig. 2, Fig. 3, Fig. 8, Fig. 9 and near-eye display system shown in Fig. 101 is presented in the form of monocular.Those skilled in the art can according to fig. 2, Fig. 3, Fig. 8, Fig. 9 and structure shown in Fig. 10 releaseStructure when near-eye display system 1 is binocular.
As shown in Fig. 2, Fig. 2 is the structure chart of near-eye display system 1 in an embodiment.Image display device 10 includes lightSource module 11 and image-display units 13.Light source module group 11 includes lighting source 111 and beam shaping bundling device 113.
Laser light source, LED light source etc. may be used in lighting source 111.Optionally, in the present embodiment, the illumination lightSource 111 is LED light source, which may include red LED light source 1111, green LED light source 1112 and blue led light source1113.In another embodiment, the color of each LED can be configured according to actual needs in LED light source, to meet realityThe needs of border situation, are not limited herein.
Beam shaping bundling device 113 is set in the light path of lighting source 111, the light for being sent out to lighting source 111Beam processing is closed in the shaping of Shu Jinhang collimator and extenders.Optionally, in the present embodiment, beam shaping bundling device 113 includes that collimation expandsBeam shaping component 1131 and combined beam unit 1133.Collimator and extender shaping component 1131 includes the first collimator and extender shaping unit11311, the second collimator and extender shaping unit 11312 and third collimator and extender shaping unit 11313.Wherein, the first collimator and extenderShaping unit 11311 is used to carry out collimator and extender Shape correction to the light beam that red LED light source 1111 is sent out.Second collimator and extenderShaping unit 11312 is used to carry out collimator and extender Shape correction to the light beam that green LED light source 1112 is sent out.Third collimator and extenderShaping unit 11313 is used to carry out collimator and extender Shape correction to the light beam that blue led light source 1113 is sent out.Under normal conditions,First collimator and extender shaping unit 11311, the second collimator and extender shaping unit 11312 and third collimator and extender shaping unit11313 alignment precision may be required in several milliradians.Combined beam unit 1133 will be for that will pass through the first collimator and extender shaping listFirst 11311, second collimator and extender shaping unit 11312 and 11313 collimator and extender Shape correction of third collimator and extender shaping unitLight beam afterwards synthesizes single beam.Optionally, combined beam unit 1133 is x-cube type light-combining prisms.
The energy for the light that image-display units 13 are provided for modulated light source module 11 is to form the figure of information to be displayedAs light.Image-display units 13 can be reflective, or transmission-type.Optionally, in the present embodiment, schemeAs display unit 13 is transmission-type.For example, image-display units 13 are transmission-type LOCS (Liquid Crystal onSilicon, liquid crystal on silicon) display source.
Array image-forming device 30 includes at least two imaging minute surfaces 31, it is each be imaged that minute surface 31 posts can thoroughly can anti-film.InstituteImaging minute surface 31 is stated to be used to carry out reflection convergence to incident subgraph light.The imaging minute surface 31, which has, converts plane waveFor the function of spherical wave.It can be continuous curved surface or diffraction plane to be imaged minute surface 31.Optionally, in the present embodiment, atAs minute surface 31 is continuous curved surface.It is clear that imaging minute surface 31 can be the continuous curved surface of optical body, multiple optics are realBody gluing forms array image-forming device 30, as shown in Figure 2.It is imaged minute surface 31 or curved mirror, multiple curved mirrors arrange shapeAt array image-forming device 30, as shown in Figure 3.
Referring to Fig. 2 or Fig. 3, in the present embodiment, array image-forming device 30 includes three imaging minute surfaces 31, pointIt is not denoted as the first imaging minute surface 311, second imaging minute surface 312 and third imaging minute surface 313.Correspondingly, liquid crystal optical switch 50 wrapsThree sub- liquid crystal optical switches 51 are included, are denoted as the first sub- liquid crystal optical switch 511, the second sub- liquid crystal optical switch 512 and third respectivelyLiquid crystal optical switch 513.
It is as follows that the near-eye display system 1 that present embodiment provides carries out the process that a virtual image is shown：One width is waited forDisplay image is divided into three subgraphs to be shown in the horizontal direction, is denoted as the first subgraph to be shown, the second son to be shown respectivelyImage and third subgraph to be shown.First, referring to Fig. 4, image display device 10 is exported according to the first subgraph to be shownA branch of subgraph light, the first sub- liquid crystal shutter are in open state, and the second sub- liquid crystal shutter and the sub- liquid crystal shutter of third, which are in, to closeClosed state.After the beam subgraph light is assembled by the first imaging reflection of minute surface 311, formed in human eye across the first sub- liquid crystal shutterFirst subgraph to be shown.Since the second sub- liquid crystal shutter and the sub- liquid crystal shutter of third are closed, then first is being formedWhen subgraph to be shown, the light after the reflection of minute surface 312 is assembled is imaged by second and across first across the first imaging minute surface 311Human eye will not be entered by being imaged the light after the imaging minute surface 312 of minute surface 311 and second is assembled by the third imaging reflection of minute surface 313, be madeAt interference.Secondly, referring to Fig. 5, image display device 10 exports a branch of subgraph light according to the second subgraph to be shown, theTwo sub- liquid crystal shutters are in open state, and the first sub- liquid crystal shutter and the sub- liquid crystal shutter of third are closed.The beam subgraphA light part is transmitted after being assembled by the first imaging reflection of minute surface 311 to the first sub- liquid crystal shutter, and another part passes through the first one-tenthAs minute surface 311.A subgraph light part across the first imaging minute surface 311 is worn after the second imaging reflection convergence of minute surface 312It crosses the second sub- liquid crystal shutter and forms the second subgraph to be shown in human eye, another part passes through the second imaging minute surface 312 to thirdMinute surface 313 is imaged to transmit.The subgraph light part transmitted to third imaging minute surface 313 is reflected by third imaging minute surface 313It assembles to the sub- liquid crystal shutter transmission of third, another part passes through third to be imaged minute surface 313.Similarly, due to the first sub- liquid crystal shutterIt is closed with the sub- liquid crystal shutter of third, therefore when forming the second subgraph to be shown, by the first imaging 311 He of minute surfaceThird, which is imaged the light after the reflection of minute surface 313 is assembled, will not enter human eye, interfere.Finally, referring to Fig. 6, image is shownDevice 10 exports a branch of subgraph light according to third subgraph to be shown, and the sub- liquid crystal shutter of third is in open state, the first sonLiquid crystal shutter and the second sub- liquid crystal shutter are closed.Similarly, a part of of the beam subgraph light can pass through firstIt is imaged minute surface 311 and second and is imaged minute surface 312 by after the third imaging reflection convergence of minute surface 313, exist across the sub- liquid crystal shutter of thirdHuman eye forms third subgraph to be shown.Since the first sub- liquid crystal shutter and the second sub- liquid crystal shutter are closed,In formation third subgraph to be shown, the light after the reflection of minute surface 312 is assembled is imaged not by the first imaging minute surface 311 and secondHuman eye can be entered, interfered.
In above process, can be exported by adjusting described image display device 10 frequency of every beam subgraph light withAnd the time interval of the every width image to be displayed of output, and coordinate the on off state for adjusting every sub- liquid crystal shutter, it is residual using visionStay principle, so that it may so that the first subgraph to be shown formed in human eye across each sub- liquid crystal shutter, second to be shownSubgraph and third subgraph to be shown can visually be spliced into the image to be displayed in user, as shown in Figure 7.
From the above process as can be seen that image display device 10 export subgraph light across imaging minute surface 31 to nextWhen a imaging minute surface 31 transmits, energy can decay.Therefore, in order to avoid the first subgraph to be shown, the second subgraph to be shownIt is different with third subgraph energy to be shown, it is imaged minute surface 312 in the first imaging minute surface 311, second and third is imaged minute surface 313Reflectivity it is identical when, image display device 10 can be made according to the energy of the subgraph light of the first subgraph to be shown outputThe energy of the subgraph light measure, exported according to the second subgraph to be shown, the subgraph exported according to third subgraph to be shownAs the energy of light is sequentially increased.Or in image display device 10 according to the subgraph light of the first subgraph output to be shownEnergy, according to the energy of the subgraph light of the second subgraph to be shown output and according to third subgraph output to be shownWhen the energy of subgraph light is equal, the first imaging minute surface 311, second imaging minute surface 312 and third is made to be imaged the anti-of minute surface 313The rate of penetrating is sequentially increased, in order to avoid the first subgraph, the second subgraph to be shown and third subgraph energy difference to be shown to be shown.That is, the energy of each subgraph to be shown to avoid image to be displayed is different, image display device 10 can be made defeatedThe energy of the subgraph light beam corresponding with each sub- liquid crystal shutter gone out, which is shown with corresponding sub- liquid crystal shutter away from image, to be filled10 distances are set to increase and increase or the reflectivity of the imaging minute surface 31 is made along the direction far from image display device 10 to increase.
As shown in figure 8, Fig. 8 is the structure chart of near-eye display system 1 in another embodiment.It is similar with Fig. 2, it is differentIt is：Image display device 10 does not use image-display units 13, and uses scanning means 15.Accordingly, image display device 10The optical parameter and structure of middle light source module group 11 are slightly different with Fig. 2.
Optionally, light source module group 11 includes lighting source 111 and beam shaping bundling device 113.Beam shaping bundling device 113Including collimator and extender shaping component 1131 and combined beam unit 1133.Laser light may be used in lighting source 111 in light source module group 11Source, LED light source etc..Collimator and extender shaping component 1131 is for exporting collimation light pencil.Optionally, collimator and extender shaping component1131 can be made of focal length collimating mirror, short focus focus lamp, aperture and short focus collimating mirror.The light that lighting source 111 exportsBeam is converged to hot spot again after focal length collimating mirror and short focus focus lamp, and aperture takes center to the hot spot after convergenceDomain filters out spot side-lobe, obtains the small light spot that energy is concentrated, and last small light spot is again Energy distribution by short focus collimating mirror collimationUniform collimation light pencil.When lighting source 111 exports polychromatic light, beam shaping bundling device 113 further includes combined beam unit1133.Combined beam unit 1133 can be arranged on the emitting light path of collimator and extender shaping component 1131, be expanded for collimation wholeThe light beam that shape component 1131 exports carries out conjunction beam；Or be arranged on the emitting light path of lighting source 111, for lighting unitThe light beam of output carries out conjunction Shu Houzai and exports to collimator and extender shaping component 1131.
Scanning means 15 is arranged on the emitting light path of light source module group 11, and the light for being emitted to light source module group 11 carries outHigh speed deflection is to form image light.Scanning means 15 can select the device with scanning function in known technology.For example,The scanning means 15 can be MEMS scanning means, piezoelectric ceramics fibre-optic scanner, Controlled Crystal scanning means etc..It is optionalGround, in the present embodiment, scanning means 15 are MEMS scanning means.MEMS scanning means can be by a two dimension MEMS scanningsGalvanometer forms or two one-dimensional MEMS scanning galvanometers compositions.Light source module group 11 (is sent to user's eye according to image to be sentVirtual image in eyeball) color and gray scale require be modulated after light be input to MEMS scanning means.MEMS scanning dressesSet can according to drive signal into horizontal deflection, namely by scan this process realize output image light purpose.
Optionally, described image display device 10 further includes collimation lens 17.The collimation lens 17 is set to scanning dressIt sets on 15 emitting light path, carries out collimation processing for the emergent ray to scanning means 15, enable light after treatmentIt is entered in a manner of approximately parallel in subsequent array image-forming device 30.
Similarly, array image-forming device 30 can also use array image-forming in Fig. 3 other than using structure as shown in Figure 8The structure of device 30 is imaged minute surface 31 or curved mirror, multiple curved mirror arrangement form array image-forming devices 30.
As shown in figure 9, Fig. 9 is the structure chart of near-eye display system 1 in another embodiment.It is similar with Fig. 2, it is differentIt is：
Lighting source 111 is monochromatic source, such as the LED light source of green.Thus, beam shaping bundling device 113 does not includeCombined beam unit 1133 only includes collimator and extender shaping component 1131.Collimator and extender shaping component 1131 is used for green LED light source1112 light beams sent out carry out collimator and extender Shape correction.Under normal conditions, since LED light source belongs to the face with certain sizeLight source (be usually 1mm), according to law of conservation of energy, by collimator and extender shaping component 1131, treated that light beam is not exhaustedTo collimated light beam.It, can be in collimator and extender shaping component for the display resolution of the raising near-eye display system 1 of higher degreeOne light orientation element 18 is set on 1131 emitting light path.In present embodiment, light orientation element 18 can be that angular-sensitive is spread outPenetrate element or holographic element.
Image-display units 13 are reflective, and for example, reflective LOCS shows source.Described image display device 10 is alsoIncluding polarization spectro component 19.Spectrum groupware of shaking is can incident non-polarized light to be divided into the vertical line polarisation of two beams, wherein PPolarisation passes through completely, and a kind of optical element that S polarisations are reflected with 45 degree of angles.In present embodiment, polarization spectro component 19Can be PBS prisms (polarization beam splitter, polarization splitting prism).
When it is implemented, the light beam that lighting source 111 exports passes through the 1131 collimator and extender shaping of collimator and extender shaping componentAnd after light orientation element 18 is handled, into polarization spectro component 19, S-polarization light beam reflexes to image by polarization spectro component 19 and showsShow that unit 13, image-display units 13 carry out light energy modulation, warp according to the gray scale of subgraph to be shown at this time to S-polarization light beam13 modulated light beam of image-display units is converted to P polarization light beam, and it is laggard that P polarization light beam is again passed through polarization spectro component 19Enter in array image-forming device 30.
In other embodiments, above-mentioned polarization spectrum groupware can also with it is inclined can thoroughly can antiplane mirror replace.But use it is inclined can thoroughly can antiplane mirror can decay to beam energy.
Optionally, in the present embodiment, imaging minute surface 31 is diffraction plane.Specifically, imaging minute surface 31 can be flatFace base type binary diffraction mirror surface, the binary diffraction mirror surface can convert plane wave to spherical wave.It is clear thatIt is imaged the diffraction plane that minute surface 31 can be tilting prisms, multiple tilting prisms gluings form array image-forming device 30, such as Fig. 9 institutesShow.It is imaged minute surface 31 or diffraction plane mirror, multiple diffraction plane mirror arrangement form array image-forming devices 30 such as Figure 10 institutesShow.It should be noted that in present embodiment, the first imaging minute surface 311, second is imaged minute surface 312 and third is imaged minute surface 313Angle of inclination may be the same or different.Correspondingly, the first imaging minute surface 311, second be imaged minute surface 312 and third atAs the binary diffraction pattern of minute surface 313 may be the same or different.
Referring to Fig. 9, optionally, near-eye display system 1 further includes controllable back layer 70.The controllable back layer 70Opacity can be become dark or opaque from clear, it is (to be shown with the virtual image for improving the display of near-eye display system 1Image) contrast.In specific implementation process, controllable back layer 70 can be electrochromic layer.Electrochromic layer can be close toArray image-forming device 30 can also be spaced an air gap or optical material with array image-forming device 30.
From the above it can be seen that image display device 10 and array image-forming device 30 in Fig. 2, Fig. 3, Fig. 8, Fig. 9 and Figure 10It can be combined with each other.For example, the image display device 10 in image display device 10 and Fig. 8 in Fig. 2 is exchanged new to constituteTwo kinds of near-eye display systems 1.In another example the controllable back layer 70 in Fig. 9 is respectively applied in Fig. 2, Fig. 3, Fig. 8 and Figure 10To constitute two kinds of new near-eye display systems 1.And Fig. 2, Fig. 3, Fig. 8, Fig. 9 and near-eye display system shown in Fig. 10 1 are onlySchematically.For example, increasing or decreasing the number of the imaging minute surface 31 in Fig. 2, Fig. 3, Fig. 8, Fig. 9 and Figure 10 just to constitute newlyNear-eye display system 1.In another example increase or decrease the number of the lighting source 111 in Fig. 2, Fig. 3, Fig. 8, Fig. 9 and Figure 10 just withConstitute new near-eye display system 1.
Near-eye display system 1 provided in an embodiment of the present invention passes through to image display device 10,30 and of array image-forming deviceThe ingenious integrated and design of liquid crystal optical switch 50, is sequentially output at least two beam subgraph light of an image to be displayed, by everyA reflection of imaging minute surface 31 is focused at human eye and forms subgraph to be shown corresponding with per beam subgraph light, utilizes persistence of visionEffect enables the subgraph to be shown formed in human eye to be visually spliced into image to be displayed in user.Therefore, the nearly eye is aobviousShow that the field angle of system 1 is equal to the sum of the field angle for all imaging minute surfaces 31 that array image-forming device 30 includes.Also, every width waits forShow that the resolution ratio of subgraph can identical and equal to image to be displayed resolution ratio.Therefore the near-eye display system 1 have regard greatlyThere is high-resolution while field picture is shown, and be applied to the close of augmented reality relative to traditional visual systemEye display system small volume.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chattingIt states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is onlyIt is an example in a series of equivalent or similar characteristics.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.