Utility model content
The purpose of this utility model is to provide a kind of simple eye big visual field near-eye display device and head-mounted display apparatus, useRealize that the nearly eye of big visual field is shown in a manner of using splicing.
In order to realize above-mentioned purpose of utility model, it is close that the utility model embodiment first aspect provides a kind of simple eye big visual fieldEye display optical system, including planar optics waveguide, planar optics waveguide have multiple input coupling grating and with each inputThe relaying grating and output coupling grating that coupling grating is arranged in a one-to-one correspondence, each input coupling grating is used to will be correspondingAnd with corresponding sub- field angle and enter planar optics waveguide with whole light beam couplings of the associated image of entrance pupil, pass through diffractionEach light beam makes the light beam meet the inner full-reflection condition of the planar optics waveguide in planar optics waveguide, and willEach light beam is guided to corresponding relaying grating, and each light beam is directed to accordingly by relaying grating by each light beam of diffractionOutput coupling grating, output coupling grating is by each light beam to external diffraction so that each light beam is unsatisfactory for planar optics waveguideInner full-reflection condition, the output coupling grating leave planar optics waveguide to whole light beams of external diffraction and form image,It is corresponding and have that the image and corresponding input coupling grating are coupled into the associated image of whole light beams of planar optics waveguideCorresponding sub- field angle；
Each output coupling grating can be from quilt from same emergent pupil to the image with corresponding sub- field angle of external diffractionViewing and mutually splicing constitute a complete image with corresponding big visual angle, and the big field angle of the complete image is by each defeatedThe corresponding sub- field angle of image for going out coupling grating to external diffraction merges to obtain.
To which the utility model is the light beam point of image related to entrance pupil by multiple and with corresponding sub- field angleIt is not coupled into planar optics waveguide from the different input coupling gratings of planar optics waveguide, the light beam of different images is by respectively oppositeIt is directed to emergent pupil together after the relaying grating and output coupling grating answered, so as to be observed simultaneously in emergent pupilThe multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,By image mosaic, increase the simple eye field angle of equipment.Due to each related to entrance pupil and with corresponding sub- field angleThe light beam of image is coupled into planar optics waveguide by an independent input coupling grating respectively, and uses and input coupling lightThe relaying grating and output coupling grating that grid are arranged in a one-to-one correspondence independently guide the light beam of each image, thus inputThe quantity of image related to entrance pupil and with corresponding sub- field angle is unrestricted, each output coupling of the utility modelGrating can export maximum 35 ° or so of diagonal angles of visual field, thus the utility model can integrally obtain in target zoneAll field angles, be far longer than existing equipment attainable 70 ° of the limit.An output is also not present in the utility model simultaneouslyCoupling grating needs the problem of assembling two incident light electron guns, and the brightness of image uniformity of output does not need additional adjustingComponent is modulated the image of input.
The number of image related to entrance pupil and with corresponding sub- field angle can be two, three, four or appointAnticipate multiple, only need to be arranged in planar optics waveguide respective numbers input coupling grating and corresponding relaying grating withOutput coupling grating.Each image related to entrance pupil and with corresponding sub- field angle is a general imageTopography, last multiple topographies are spliced to form complete general image, to increase the simple eye field angle of equipment, arbitrarilyTwo related to entrance pupil and images with corresponding sub- field angle can horizontal splicing or vertical splicing.According to making for equipmentWith needs, multiple output coupling gratings can be arranged in the form of arbitrarily needing, such as：Can in the horizontal direction according toSecondary arrangement can also be vertically arranged in order, can also be arranged in arrays etc., go out to realize each output coupling gratingThe horizontal splicing for the image penetrated, vertically splicing, matrix splicing etc..
Each light beam carry out level that the relaying grating is configured as being directed onto relaying grating expands and vertically expandsOne kind in beam expands, and each light beam that the output coupling grating is configured as being directed onto output coupling grating carries out waterFlat expand expands with the another kind in vertically expanding.
It refers to that will be incident to each light beam of grating along the width of the grating that the level, which is expanded or vertically expanded,Direction is directed on multiple extended areas of the grating, and multiple extended areas of grating realize the extension to each light beam, withThe multiple parallel beamlets for forming the light beam, achieve the effect that the exit pupil diameter of extension light beam.The light expanded for carry out levelFor grid, multiple extended areas of the grating are set gradually in the horizontal direction, for the grating vertically expanded, the lightMultiple extended areas of grid are vertically set gradually.Diffraction efficiency realization by adjusting each expansion area expands and ensures to expandPut on display the brightness uniformity of pupil.
Further, the complete graph of respectively related to the entrance pupil and image with corresponding sub- field angle in its compositionOutput coupling grating as in corresponding to the residing orientation image related with entrance pupil and with corresponding sub- field angle to being somebody's turn to doResiding orientation is consistent in planar optics waveguide.So that the figure that each output coupling grating is formed to the light beam of external diffractionIt is spliced to form complete image desired position as being in.
Further alternative, each light beam that relaying grating is directed to relaying grating by diffraction makes the light beam existMeet the inner full-reflection condition of the planar optics waveguide in planar optics waveguide, and each light beam is guided to corresponding defeatedGo out coupling grating.
The nearly eye display optical system of above-mentioned simple eye big visual field can be incorporated into mixed reality and show equipment or augmented realityIt shows in equipment, but not limited to this.The single embodiment of the nearly eye display optical system of above-mentioned simple eye big visual field can be supplied to useEach in the left eye and right eye at family.Thus on the other hand the utility model provides a kind of head-mounted display apparatus, including upperThe nearly eye display optical system of any one simple eye big visual field stated and the component of wearing for being worn on user's head, it is simple eye to regard greatlyThe nearly eye display optical system in field, which is worn on component described in and is oriented its output coupling grating, directs the light beam into pendantOn the eyes of wearer.
The described head-mounted display apparatus tool is there are one the nearly eye display optical system of simple eye big visual field, the nearly eye of simple eye big visual fieldDisplay optical system is oriented its output coupling grating and directs the light beam on the left eye or right eye of wearer.
For the described head-mounted display apparatus tool there are two the nearly eye display optical system of simple eye big visual field, one of them is simple eye bigThe nearly eye display optical system of visual field is oriented its output coupling grating and directs the light beam on the left eye of wearer, anotherThe nearly eye display optical system of simple eye big visual field is oriented its output coupling grating and directs the light beam on the right eye of wearer.
It is described to wear component to include frame, the helmet or headband etc. be worn on the component in account.
One or more technical solution in the utility model embodiment, at least has the following technical effect that or excellentPoint：
Each output coupling grating can be from quilt from same emergent pupil to the image with corresponding sub- field angle of external diffractionViewing and mutually splicing constitute a complete image with corresponding big visual angle, so as to be observed simultaneously in emergent pupilThe multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,By image mosaic, increase the simple eye field angle of equipment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility modelClearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than wholeEmbodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative effortsThe every other embodiment obtained, shall fall within the protection scope of the present invention.
Specifically, as shown in Figure 1, Figure 2, Figure 3 shows, the utility model embodiment provides a kind of nearly eye of simple eye big visual field and shows lightSystem, including planar optics waveguide, planar optics waveguide 13 have multiple input coupling grating 131 and with each input couplingThe relaying grating 132 and output coupling grating 133 that grating 131 is arranged in a one-to-one correspondence, each input coupling grating 131 be used to byIt is corresponding and with corresponding sub- field angle and enter planar optics waveguide with whole light beam couplings of the associated image of entrance pupil13, make the inside that the light beam meets the planar optics waveguide in planar optics waveguide 13 complete by each light beam of diffractionConditioned reflex, and each light beam is guided to corresponding relaying grating 132, relaying grating 132, will be every by each light beam of diffractionOne light beam is directed to corresponding output coupling grating 133, and output coupling grating 133 is by each light beam to external diffraction so that eachLight beam is unsatisfactory for the inner full-reflection condition of planar optics waveguide, whole light beams of the output coupling grating 133 to external diffractionIt leaves planar optics waveguide 13 and forms image, which is coupled into planar optics waveguide with corresponding input coupling grating 131Whole associated images of light beam are corresponding and with corresponding sub- field angle；
Each output coupling grating 133 can be from same emergent pupil to the image with corresponding sub- field angle of external diffractionIt is watched and mutually splicing, composition one has the complete image at corresponding big visual angle, the big field angle of the complete image is by eachThe corresponding sub- field angle of image of output coupling grating 133 to external diffraction merges to obtain.
To which the utility model is the light beam point of image related to entrance pupil by multiple and with corresponding sub- field angleIt is not coupled into planar optics waveguide from the different input coupling gratings of planar optics waveguide, the light beam of different images is by respectively oppositeIt is directed to emergent pupil together after the relaying grating and output coupling grating answered, so as to be observed simultaneously in emergent pupilThe multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope show,By image mosaic, increase the simple eye field angle of equipment.Due to each related to entrance pupil and with corresponding sub- field angleThe light beam of image is coupled into planar optics waveguide by an independent input coupling grating respectively, and uses and input coupling lightThe relaying grating and output coupling grating that grid are arranged in a one-to-one correspondence independently guide the light beam of each image, thus inputThe quantity of image related to entrance pupil and with corresponding sub- field angle is unrestricted, each output coupling of the utility modelGrating can export maximum 35 ° or so of diagonal angles of visual field, thus the utility model can integrally obtain in target zoneAll field angles, be far longer than existing equipment attainable 70 ° of the limit.An output is also not present in the utility model simultaneouslyCoupling grating needs the problem of assembling two incident light electron guns, and the brightness of image uniformity of output does not need additional adjustingComponent is modulated the image of input.
As shown in Fig. 2, Fig. 4, Fig. 5, Fig. 6, the number of image related to entrance pupil and with corresponding sub- field angle canThink two, three, four or any number of, only need to be arranged in planar optics waveguide the input coupling grating of respective numbers withAnd corresponding relaying grating and output coupling grating.It is each described related to entrance pupil and with accordingly sub- field angleImage be a general image topography, last multiple topographies are spliced to form complete general image, to increaseThe simple eye field angle of big equipment, related to the entrance pupil and image with corresponding sub- field angle of any two horizontal can spliceOr vertical splicing.According to the use needs of equipment, multiple output coupling gratings 133 can in the form of arbitrarily needing intoRow arrangement, such as：It can be arranged in order, can also vertically be arranged in order in the horizontal direction, can also be arranged in arrays etc.,Horizontal splicing, vertical splicing, matrix splicing etc. to realize the image that each output coupling grating 133 is emitted.For example, forThe image related to entrance pupil and having corresponding sub- field angle of any two level splicing, the level of one of image regardRink corner is a °-b °, and the horizontal field of view angle of another image is b °-c ° or d °-a °, the two images pass through planar optics waveguide notWith input coupling grating, relaying grating and the conduction of output coupling grating, and two output coupling gratings are horizontally arranged, then thisThe horizontal field of view angle for the image that the image level of two output coupling gratings outgoing splices is a °-c ° or d °-b °.Example againSuch as, the image related to entrance pupil and that there is corresponding sub- field angle vertically spliced for any two, one of imageVertical field of view angle be a °-b °, the vertical field of view angle of another image is b °-c ° or d °-a °, then the two images pass through tabletThe different input coupling grating of optical waveguide, relaying grating and the conduction of output coupling grating, and two output coupling gratings hang downIn line row, then it is a °-c ° that the image of the two output coupling gratings outgoing, which vertically splices the horizontal field of view angle of obtained image,Or d °-b °.Similarly, multiple topography's splicings can obtain target level field angle and target vertical field angle.
Such as shown in Fig. 1-Fig. 3, the quantity for giving image related to entrance pupil and with corresponding sub- field angle isTwo, two output coupling gratings 133 arrange in the horizontal direction, two outgoing image level splicing embodiment structureFigure, corresponding field angle is zero degree to maximum horizontal after the image of one of image source 11 is transmitted by planar optics waveguide 13Field angle (such as 40 °), corresponding field angle be to bear after the image of another image source 11 is transmitted by planar optics waveguide 13Maximum horizontal field angle arrives zero degree (such as -40 °), and positive and negative represents corresponding direction, and 80 ° of visual field can be realized by splicingAngle.
As Fig. 4 quantity for giving image related to entrance pupil and with corresponding sub- field angle is four, four it is defeatedGo out the structure chart for the embodiment that coupling grating 133 is arranged in arrays, four images being emitted are in matrix splicing, which both increasedBig horizontal field of view angle, also increases vertical field of view angle.As Fig. 5,6 give related to entrance pupil and have corresponding sub- visual fieldThe quantity of the image at angle is four, four output coupling gratings 133 are arranged in order in the horizontal direction, four image levels being emittedThe structure chart of the embodiment of splicing, to increase horizontal field of view angle.
Preferably, output coupling grating 133 is located at the centre position of planar optics waveguide 13 as possible, but it is not limited toThis.Input coupling grating 131 can be set to any position of planar optics waveguide 13, be not restricted by, but match for convenienceThe light engine for emitting image beam is set, and reduces the influence to user's visual field as possible, input coupling grating 131 can be setIt is placed in the edge or edge of planar optics waveguide 13.
The relaying grating 132 be configured as being directed onto relaying grating 132 each light beam carry out level expand andOne kind in vertically expanding expands, and the output coupling grating 133 is configured as being directed onto the every of output coupling grating 133Another kind during one light beam carry out level is expanded and vertically expanded expands.
It refers to that will be incident to each light beam of grating along the width of the grating that the level, which is expanded or vertically expanded,Direction is directed on multiple extended areas of the grating, and multiple extended areas of grating realize the extension to each light beam, withThe multiple parallel beamlets for forming the light beam, achieve the effect that the exit pupil diameter of extension light beam.The light expanded for carry out levelFor grid, multiple extended areas of the grating are set gradually in the horizontal direction, for the grating vertically expanded, the lightMultiple extended areas of grid are vertically set gradually.Diffraction efficiency realization by adjusting each expansion area expands and ensures to expandPut on display the brightness uniformity of pupil.
Further, the complete graph of respectively related to the entrance pupil and image with corresponding sub- field angle in its compositionOutput coupling grating as in corresponding to the residing orientation image related with entrance pupil and with corresponding sub- field angle to being somebody's turn to do133 orientation residing in planar optics waveguide 13 are consistent.So that light beam of each output coupling grating 133 to external diffractionThe image of formation, which is in, is spliced to form complete image desired position.
It is further alternative, relaying grating 132 be directed to by diffraction relaying grating 132 each light beam make it is describedLight beam meets the inner full-reflection condition of the planar optics waveguide in planar optics waveguide 13, and by each light beam guide toCorresponding output coupling grating 133.
The output coupling grating 133 of planar optics waveguide 13 is configured in the simple eye front of user, to be formed to user's listThe visible image of eye.Planar optics waveguide 13 is substantially transparent, so that user not only can watch entrance pupil correlation simultaneouslyImage with corresponding sub- field angle can also penetrate planar optics waveguide 13 and watch the image from real world.To makeThe utility model can be used for augmented reality show equipment reach by the image superposition being spliced to form in real worldImprove the technique effect that enhancing shows equipment field angle.
After being relative to the location of planar optics waveguide 13 with eyes of user, the planar optics waveguide 13 includesFormer and later two surfaces being mutually parallel.Input coupling grating 131, relaying grating 132 and the output coupling of planar optics waveguide 13Grating 133 can be laid in the surface or inside of planar optics waveguide 13.Input coupling grating 131, relaying grating 132 and outputCoupling grating 133 can be transmission grating or reflecting grating, and different and light path according to above-mentioned grating installation position need to selectWith the grating of respective type.
The light beam of the image related to entrance pupil and with corresponding sub- field angle is provided by light engine, light engineIncluding image source 11 and eyepiece optics device 12, image source 11 includes micro-display, and micro-display can be that digital light is handled(DLP) display, liquid crystal on silicon (LCOS) display, LCD display, OLED display, optical fiber scanning display and MEMS are sweptRetouch any one in image display system.The preferred micro-display uses optical fiber scanning display, with volumeSmall, light-weight feature enables to use in conjunction with the objective feature for needing to configure multiple images source 11 in the utility modelThe practicability of the equipment of the utility model, convenience are obviously improved.And similar digital light processing (DLP) display, silicon substrateLiquid crystal (LCOS) display, LCD display, OLED display, optical fiber scanning display and MEMS scan image display systems are equalHave the characteristics that modular construction is complicated, volume is big, weight is big, a display system or module using an aforementioned display device justWith sizable volume and weight, especially for helmet, a display system uses two or more above-mentioned displaysLarge volume that device is brought, big weight cannot be easily accepted by a user.
The eyepiece optics device 12 generally comprises collimation lens, is used to amplify and is imaged and emits image source 11Whole light beams are collimated, and whole light beams after collimation are injected planar optics waveguide 13, further, the whole after collimationThe input coupling grating 131 of light beam directive planar optics waveguide 13.The area of input coupling grating 131 is more than eyepiece optics device12 project light beams diameter, to ensure eyepiece optics device 12 be emitted, be used to form the image with respective field of vision angleWhole light beam couplings enter planar optics waveguide 13.
The nearly eye display optical system of above-mentioned simple eye big visual field can be incorporated into mixed reality and show equipment or augmented realityIt shows in equipment, but not limited to this.The single embodiment of the nearly eye display optical system of above-mentioned simple eye big visual field can be supplied to useEach in the left eye and right eye at family.Thus on the other hand the utility model provides a kind of head-mounted display apparatus, including upperThe nearly eye display optical system of any one simple eye big visual field stated and the component of wearing for being worn on user's head, it is simple eye to regard greatlyThe nearly eye display optical system in field, which is worn on component described in and is oriented its output coupling grating 133, to be directed the light beam intoOn the eyes of wearer.
Described wearing also sets up multiple light engines on component, each light engine is used to be formed described with entrance pupil phaseClose and have the light beam of the image of corresponding sub- field angle.
The described head-mounted display apparatus tool is there are one the nearly eye display optical system of simple eye big visual field, the nearly eye of simple eye big visual fieldDisplay optical system is oriented its output coupling grating 133 and directs the light beam on the left eye or right eye of wearer.
For the described head-mounted display apparatus tool there are two the nearly eye display optical system of simple eye big visual field, one of them is simple eye bigThe nearly eye display optical system of visual field is oriented its output coupling grating 133 and directs the light beam on the left eye of wearer, in additionThe nearly eye display optical system of one simple eye big visual field is oriented the right side that its output coupling grating 133 directs the light beam into wearerOn eye.
A planar optics wave is shared as the nearly eye display optical system of the simple eye big visual field of a preferred embodiment two13 are led, being then respectively arranged to the nearly eye of two simple eye big visual fields at the required position of the planar optics waveguide 13 shows optical systemInput coupling grating 131, relay part 132, the output coupling grating 133 of system.
It is described to wear component to include frame, the helmet or headband etc. be worn on the component in account.
The light engine can be located at the side for wearing component, be located at the outside of two eyes of user；It can alsoPositioned at the top of the bridge of the nose of user；It can also be located above or below two eyes of user.Being preferably located at does not influence to useThe position in the family visual field.Since the image source 11 and its corresponding eyepiece optics device 12 of the application can both be located at planar optics waveLead 13 rear side, as shown in fig. 7, can also be located at planar optics waveguide 13 front side, as shown in Figure 1, thus can be easilyRequired amount of image source 11 and its corresponding eyepiece optics device 12 are set on wearing component.Further, as preferredImage source 11, the feature that optical fiber scanning display is small, light-weight so that the practicability of the utility model further carriesIt rises so that the head-mounted display apparatus of the utility model has good display performance and wearing comfort simultaneously.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model,And those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.In rightIn it is required that, any reference mark between bracket should not be configured to limitations on claims.Word "comprising" or " packetInclude " do not exclude the presence of element or step not listed in the claims.Word "a" or "an" before element is not arrangedExcept there are multiple such elements.The utility model can be by means of including the hardware of several different elements and by means of suitableIt is realized when the computer of programming.In the unit claims listing several devices, several in these devices can be withIt is to be embodied by the same hardware branch.The use of word first, second, and third does not indicate that any sequence, canThese words are construed to the nearly eye display optical system of simple eye big visual field.
One or more technical solution in the utility model embodiment, at least has the following technical effect that or excellentPoint：
Each output coupling grating 133 can be from same emergent pupil to the image with corresponding sub- field angle of external diffractionIt is watched and is mutually spliced, a complete image with corresponding big visual angle is constituted, so as to be observed simultaneously in emergent pupilTo the multiple images for projecting planar optics waveguide, the image that each image is respectively used in certain sub- visual field scope is aobviousShow, by image mosaic, increases the simple eye field angle of equipment.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusiveFeature and/or step other than, can combine in any way.
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 utility model is not limited to specific implementation mode above-mentioned.The utility model expands to any in this specificationThe new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new groupIt closes.