CN208044193U - A kind of nearly eye shows eyeglass, eyesight correction device and nearly eye display device - Google Patents

Abstract

A kind of nearly eye of the utility model offer shows eyeglass, eyesight correction device and nearly eye display device, including at least one layer of optical grating construction, one in the grating structural parameter of the optical grating construction, two or more show that eyeglass further includes at least one curved substrate for correcting defects of vision with change in location, the nearly eye with optical diopter for the purpose of changing light field phase.The display of virtual three-dimensional scenery is realized using optical grating construction, vision correction is carried out using curved substrate, directly vision correction substrate is integrated into a Lens assembly, it is allowed in the three-dimensional nearly eye display device of structure, succinct structure as common three-dimensional nearly eye display device can be obtained, visual impairment understanding wears the nearly eye three-dimensional display apparatus, and commonly the nearly experience of eye three-dimensional display apparatus is similar with the normal people's wearing of normal vision, comfortable natural.

Description

A kind of nearly eye shows eyeglass, eyesight correction device and nearly eye display device

Technical field

The utility model is related to show equipment technical field, more specifically to a kind of AR with optical diopter Or VR eyeglasses, the eyesight correction device for AR or VR and nearly eye display device.

Background technology

Augmented reality (AR) is a kind of new technology merging real world information and virtual world information, is former This is difficult the entity information experienced in the certain time spatial dimension of real world, passes through the science and technology such as computer, simulation It is superimposed again after emulation, virtual Information application to real world is perceived by human sensory, to reach the sense of exceeding reality Official experiences.With the continuous development of augmented reality, various near-eye display devices competitively list, for example, Google Google The HoloLens of Glass and Microsoft.

Various electronic products occupy people's lives now, the disadvantage frequently brought using these electronic products One of end is exactly visual problems getting worse.Only China just has about 4.5 hundred million people to need extended wear glasses, however nearly eye at present There is no propose special design scheme for the problematic crowd of eyesight for display device.This lot to need aobvious using nearly eye The people of showing device must not no longer wear the glasses that a pair can correct defects of vision, and which increase the bridge of the noses to bear weight, also largely Reduce the comfort and practicability of nearly eye display device, therefore the nearly eye displaying scheme corrected defects of vision is augmented reality and void The basis that quasi- reality is accepted extensively by visual impairment patient.

Chinese patent CN106707515 discloses a kind of three-dimensional display apparatus with vision correction function.Its work is former The similar pinhole imaging system of reason.Point light source light source is located at the side of optical mirror slip, and incident light is by the optics of optical lens surface array Micro-structure is converted to the light beam of point light source shape.Spatial light modulator is for modulating incidence between optical mirror slip and human eye The amplitude and phase of light make emergent light first show information projection into human eye.Spatial light modulator is as essential device Lens thickness, volume and weight can be increased, and its permeability may influence the incidence of real world light, information fusion be played negative Face acts on.This design scheme is of high cost, enforcement difficulty is big.

Therefore there is an urgent need for a kind of vision correction lens that can be organically combined with existing AR or VR equipment, convenient for near-sighted personage side Just AR or VR equipment or a kind of AR or VR equipment being directly provided with vision correction function are comfortably used.

Utility model content

The purpose of this utility model is to provide a kind of vision correction mirrors that can be organically combined with existing AR or VR equipment Piece uses AR or VR equipment or a kind of AR or VR being directly provided with vision correction function convenient for near-sighted personage's Energy and comfort Equipment.In order to achieve the above objectives, the technical solution of the utility model is as follows：

A kind of nearly eye display eyeglass, including at least one layer of optical grating construction and at least one curved substrate, the nearly eye are shown Eyeglass has optical diopter.The display that virtual three-dimensional scenery is realized using optical grating construction is carried out eyesight using curve lens and rectified Just, directly vision correction lens are integrated into a Lens assembly, are allowed to, in the three-dimensional nearly eye display device of structure, to obtain With structure succinct as common three-dimensional nearly eye display device, visual impairment understanding wears the nearly eye three-dimensional display apparatus and common The experience that twenty-twenty people wears common nearly eye three-dimensional display apparatus is similar, comfortable natural.

Further, one in the parameter of the optical grating construction, it is two or more for the purpose of changing light field phase with Change in location.Further, the optical grating construction composed structure unit pixel, all structure lists are designed according to grating equation First pixel forms nano lens.

Further, at least one of the first surface and second surface of the curved substrate are curved-surface structures.

Further, the nearly eye with optical diopter shows that the optical grating construction of eyeglass is produced in curved substrate, Or optical grating construction is made on film, the film matches are incorporated into curved substrate.

Further, in the first surface and second surface of the curved substrate wherein it is curved surface on one side, another side is Plane, the optical grating construction is directly produced in the plane of curved substrate, or optical grating construction is made on film, then will be described Film is incorporated into the plane of curved substrate.

Further, the two sides of the curved substrate is all curved surface, and wherein the radius of curvature of first surface is more than the second table The radius of curvature of the first surface of the radius of curvature in face or the curve lens is less than the radius of curvature of second surface.

Further, the curved substrate and its corresponding optical grating construction are 3 layers or 4 layers, correspond to respectively three primary colours or Four primary optical signal.

The utility model also provides a kind of eyesight correction device for near-eye display device, including at least one above-mentioned Nearly eye with optical diopter shows eyeglass and the connection component for plugging into near-eye display device, described to be bent with optics The nearly eye of luminosity shows that eyeglass is mounted on connection component.

The utility model also provides a kind of nearly eye display device, including any above-mentioned nearly eye with optical diopter is shown Show eyeglass or the eyesight correction device.

The method of this virtual scene imaging and the decoupling of true Scenery Imaging, is conducive to lens design and makes, and facilitates picture Difference control and system optimization.

Virtual scene enters virtual reality fusion eyeglass by the method for waveguide transmission or projection transmission.Grate film and curved mirror Piece simultaneously participates in virtual scene and true Scenery Imaging.Therefore, lens structure is compact, and comfort level is high.

A kind of AR or VR eyeglasses with optical diopter include at least one layer of nanometer grating functional structure, the nanometer One in the grating structural parameter of grating functional structure, it is two or more for the purpose of changing light field phase with change in location, The virtual reality fusion eyeglass with optical diopter further includes a curve lens at least being used to correct defects of vision.

Further, the grating structural parameter includes but not limited to period of grating, orientation, depth, inclination angle, duty Than.

Further, the one or both sides in the first surface and second surface of the curve lens are curved-surface structures.

Further, AR the or VR eyeglasses with optical diopter further include optical waveguide substrates, the nanometer grating work( Energy structure fabrication is made in optical waveguide substrates, or by nanometer grating functional structure on nanometer grating function film, the nanometer Grating function film is compound on slab guide substrate.

Further, the nanometer grating functional structure is directly produced on curve lens, or by nanometer grating function knot Structure is made on nanometer grating function film, and the nanometer grating function film is compound on curve lens.

Further, in the first surface and second surface of the curve lens wherein it is curved surface on one side, another side is Plane, the nanometer grating functional structure is directly produced in the plane of curve lens, or nanometer grating functional structure is made In on nanometer grating function film, the nanometer grating function film is compound in the plane of curve lens.

Further, the two sides of the curve lens is all curved surface, and wherein the radius of curvature of first surface is more than the second table The radius of curvature of the first surface of the radius of curvature in face or the curve lens is less than the radius of curvature of second surface.

Further, the optical waveguide substrates and its corresponding nanometer grating functional structure are 3 layers or 4 layers, are corresponded to respectively Three primary colours or four primary optical signal.

The utility model also provides a kind of eyesight correction device for AR or VR equipment, including is at least used to correct defects of vision A curve lens and the connection component for plugging into AR or VR equipment, the curve lens be mounted on connection component on.

The utility model also provides a kind of AR or VR devices, including any of the above-described described AR with optical diopter or VR eyeglasses or eyesight correction device.

Description of the drawings

In order to illustrate more clearly of the technical solution in the utility model embodiment technology, embodiment technology will be retouched below Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also basis These attached drawings obtain other attached drawings.

Schematic diagram without diopter lens in the existing near-eye display devices of Fig. 1.

The schematic diagram of visual impairment user is used in Fig. 2 a-b near-eye display devices without diopter lens.

Fig. 3 a-b are a kind of embodiment lower structure schematic diagrames of the utility model.

Fig. 4 a-b are a kind of embodiment lower structure schematic diagrames of the utility model.

Fig. 5 a-b are the planar structure schematic diagrams of nano lens waveguide lens unit.

Fig. 6 a and Fig. 6 b are structure dimensions in structure of the nanometer diffraction grating under XZ planes and X/Y plane of Nano grade Figure.

Fig. 7 a-b are the transparent glasses lens schematic diagrames that present technology includes one group of grating beam splitting film layer.

Fig. 8 a-b are the waveguide eyeglass schematic diagrames for including area's nanometer grating group.

Fig. 9 a-b are the structural schematic diagrams of the eyeglass with diopter of the function film containing nanometer grating dot structure.

Figure 10 a-b are this kind of nano lens waveguide eyeglass embodiment planar structure distribution example schematic diagrames.

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 model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.

As shown in Figure 1, the eyeglass used in existing AR near-eye display devices is the eyeglass 12 without diopter.Human eye 11 In the side of eyeglass 12, information is received by eyeglass 12.Being made in the waveguide of eyeglass 12 has nanometer grating functional structure, is used for coupling The turnover of light in 12 waveguide of eyeglass is closed, drops in or occasionally goes out.For the crowd of anopsia defect, this eyeglass 12 can be fine Merge real world information and virtual world information in ground.Some users are because the refractive power of refraction of eye system weakens, real world After the dioptric system complications by eye, focus can not be fallen on the retina information.For example, focus falls bending before retina Light state is known as myopia, such as Fig. 2 a；The refractive status that focus is fallen after retina is known as long sight, such as 2b.There is visual impairment User can not see real world object 21 clearly by the near-eye display device of the eyeglass 12 without diopter.Moreover, not having diopter Eyeglass 12 focus of virtual information can not also may be fallen on the retina of such user.Therefore there is the people of visual impairment only Nearly eye AR or VR equipment are worn again after eyesight correcting glasses can be worn, and still, comfort is very poor.So this eyeglass can not be There is the user of visual impairment to provide practical, comfortable near-eye display device.

In order to solve this problem, the utility model provides a kind of nearly eye display eyeglass, including at least one layer of optical grating construction With at least one curved substrate, the nearly eye shows that eyeglass has optical diopter.

Further, one in the parameter of the optical grating construction, it is two or more for the purpose of changing light field phase with Change in location.

Further, the optical grating construction composed structure unit pixel, all structure lists are designed according to grating equation First pixel forms nano lens.

Further, at least one of the first surface and second surface of the curved substrate are curved-surface structures.

Further, the nearly eye with optical diopter shows that the optical grating construction of eyeglass is produced in curved substrate, Or optical grating construction is made on film, the film matches are incorporated into curved substrate.

Further, in the first surface and second surface of the curved substrate wherein it is curved surface on one side, another side is Plane, the optical grating construction is directly produced in the plane of curved substrate, or optical grating construction is made on film, then will be described Film is incorporated into the plane of curved substrate.

Further, the two sides of the curved substrate is all curved surface, and wherein the radius of curvature of first surface is more than the second table The radius of curvature of the first surface of the radius of curvature in face or the curve lens is less than the radius of curvature of second surface.

Further, the curved substrate and its corresponding optical grating construction are 3 layers or 4 layers, correspond to respectively three primary colours or Four primary optical signal.

The utility model also provides a kind of eyesight correction device for near-eye display device, including at least one above-mentioned Nearly eye with optical diopter shows eyeglass and the connection component for plugging into near-eye display device, described to be bent with optics The nearly eye of luminosity shows that eyeglass is mounted on connection component.

The utility model also provides a kind of nearly eye display device, including any above-mentioned nearly eye with optical diopter is shown Show eyeglass or the eyesight correction device.

The method of this virtual scene imaging and the decoupling of true Scenery Imaging, is conducive to lens design and makes, and facilitates picture Difference control and system optimization.

Virtual scene enters virtual reality fusion eyeglass by the method for waveguide transmission or projection transmission.Grate film and curved mirror Piece simultaneously participates in virtual scene and true Scenery Imaging.Therefore, lens structure is compact, and comfort level is high.

For example, in practical applications, a kind of AR or VR eyeglasses include at least one layer of nanometer grating functional structure, described to receive One in the grating structural parameter of rice grating functional structure, two or more become with position for the purpose of changing light field phase Change, AR the or VR eyeglasses with optical diopter further include a curve lens at least being used to correct defects of vision.

The display that virtual three-dimensional scenery is realized using nanometer grating functional structure carries out vision correction using curve lens, Directly vision correction lens are integrated into a Lens assembly, are allowed in the three-dimensional nearly eye display device of structure, can obtain with The equally succinct structure of common three-dimensional nearly eye display device, visual impairment understanding are worn the nearly eye three-dimensional display apparatus and are commonly regarded The experience that the normal people of power wears common nearly eye three-dimensional display apparatus is similar, comfortable natural.

Further, the grating structural parameter includes but not limited to period of grating, orientation, depth, inclination angle, duty Than.Adjusting these parameters makes it with change in location, to play the role of changing light field phase.

Further, the one or both sides in the first surface and second surface of the curve lens are curved-surface structures.Institute Meaning first surface refers to the one side far from human eye in two surfaces of curve lens in use, and second surface refers to Close to the another side of human eye.

Further, AR the or VR eyeglasses with optical diopter further include optical waveguide substrates, the nanometer grating work( Energy structure fabrication is made in optical waveguide substrates, or by nanometer grating functional structure on nanometer grating function film, the nanometer Grating function film is compound in optical waveguide substrates.It is considered for easy to process and cost, it can be by nanometer grating functional structure It is stamped on a function film (custom is known as nanometer grating function film), the function film is then compounded in a wave again In conductive substrate, the eyeglass of nearly eye Three-dimensional Display is constituted.Directly nanometer grating functional structure can certainly be processed in waveguide Substrate surface.Then the curve lens (vision correction lens) for correcting defects of vision are subjected to overlapping placement with waveguide, it is general bent Face eyeglass is set to the position that human eye is closer to than optical waveguide substrates.It is compound when optical waveguide substrates and nanometer grating function film When body and curve lens are all transparent, merging for virtual image and real mirror image may be implemented, that is, realize AR functions.

Further, the nanometer grating functional structure is directly produced on curve lens, or by nanometer grating function knot Structure is made on nanometer grating function film, then nanometer grating function film is compound on curve lens.In specific implementation, The scheme for such as using waveguide coupling optical signal, is equivalent to the surface of optical waveguide substrates being processed as curved surface, is allowed to have both optical signal Propagation and vision correction function, in this way, optical waveguide substrates and curve lens are combined into one.And if using nanometer grating function knot When the scheme of structure catoptric imaging, then curve lens only need have the function of vision correction.

In some embodiments, in the first surface and second surface of the curve lens wherein it is curved surface on one side, separately It is plane on one side, the nanometer grating functional structure is directly produced in the plane of curve lens, or by nanometer grating function knot Structure is made on nanometer grating function film, and the nanometer grating function film is compound in the plane of curve lens.It is such Setting can reduce the complexity of grating, reduce processing cost.Here curve lens can be process by optical waveguide substrates, In this way, optical waveguide substrates had both played the role of optical signal total reflection guiding, its curved surface also plays vision correction, it is also It can be cooperateed with together with nanometer grating functional structure and carry out vision correction, to meet the needs of different situations.Such as Fig. 9 a and Fig. 9 b institutes Show.

Further, the two sides of the curve lens is all curved surface, and wherein the radius of curvature of first surface is more than the second table The radius of curvature of the first surface of the radius of curvature in face or the curve lens is less than the radius of curvature of second surface.Different Selection can meet the vision correction of myopia and long sight.

In some embodiments, the optical waveguide substrates and its corresponding nanometer grating functional structure are 3 layers or 4 layers, point Three primary colours or four primary optical signal are not corresponded to.Specifically, it is exactly (to add three or four optical waveguide substrates in each optical waveguide substrates Work has nanometer grating structure or is compounded with nanometer grating function film) it overlaps, these optical waveguide substrates and its nanometer grating Structure corresponds respectively to display three primary colours (such as RGB) or four primary (such as red, green, blue and yellow) optical signal.To realize color three dimension Display.The utility model also provides a kind of eyesight correction device for AR or VR equipment, including at least be used to correct defects of vision One curve lens and the connection component for plugging into AR or VR equipment, the curve lens are mounted on connection component.For The personage of visual impairment can be provided with and comfortably use by meeting AR the or VR equipment of existing common no vision correction function, and Using this component, directly curve lens (vision correction lens) are docked in common AR or VR equipment using connection component, In this way, just reusing AR or VR equipment without wearing spectacles, the comfort used is substantially increased.

The utility model also provides a kind of AR or VR devices, including any of the above-described described AR with optical diopter or VR eyeglasses or eyesight correction device.

The method of this virtual scene imaging and the decoupling of true Scenery Imaging, is conducive to lens design and makes, and facilitates picture Difference control and system optimization.

Virtual scene enters virtual reality fusion eyeglass by the method for waveguide transmission or projection transmission.Nanometer grating function film Virtual scene and true Scenery Imaging are simultaneously participated in curve lens.Therefore, lens structure is compact, and comfort level is high.

In some embodiments of concrete application, including at least one layer of nanometer grating structure function film and extremely on the eyeglass Few curve lens, the eyeglass nanometer grating structure function film are characterized in projecting virtual image to eye-observation area Domain.The curve lens have bending curve, and bending curve can be spherical surface or aspherical.Light of the bending curve to real world Line is bent, and plays the role of correcting defects of vision so that the light and nanostructure function film of real world throw incoming void The light of quasi- scenery can be fallen on the retina of human eye, to realize the fusion of real world information and virtual world information. Nanometer grating structure function film can be directly produced on the curved surface of the curve lens with diopter, such as Fig. 3 a-b and figure Shown in 4a-b.Fig. 3 a-b and Fig. 4 a-b are the schematic diagram using two different curve lens respectively.Or it is simple in order to make, It can also be produced on a slab guide substrate, then the slab guide substrate and curve lens are combined with each other again, such as Apart from eyes by closely to far setting gradually curve lens and plane wave conductive substrate.The one side remote from eyeball claims on setting curve lens For first surface 31, the one side close from eyeball is known as second surface 32.In the embodiment shown in T Fig. 3 a and Fig. 3 b, the eyeglass First surface radius of curvature be less than second surface radius of curvature, real world light is after by the dioptric system complications Focus Club Forward, then the eyeglass can play the role of vision correction to long sight crowd.In another embodiment, the eyeglass The radius of curvature of first surface is more than the radius of curvature of second surface, and such as Fig. 4 a, real world information is passing through the dioptric system It is moved after Focus Club after complications, then the eyeglass can play the role of myopia population vision correction 4b.In the two embodiments, Nanometer grating functional structure is produced on the first surface 31 of curve lens, (need to be received by the nanometer grating functional structure of gradual change The change of the parameters such as period, orientation, depth, duty ratio of rice grating functional structure) to eliminate curve lens in uneven thickness to void The phase difference that quasi- image light field generates.Above-mentioned nanometer grating functional structure can also be machined in the work(for being compound in curve lens surface On energy film.

Nanometer grating functional structure described in the utility model refers to that one kind being prepared in nanometer grating function film, waveguide Nanometer grating functional area on substrate surface or curve lens surface.

Nanometer grating region major function is will to be propagated through the optical signal come in spatial light modulator to be coupled into, transfer and most It is projected into human eye eventually, to realize the presentation of virtual scene, as needed, by utilizing the reasonable row of nanometer grating simultaneously Cloth makes nanometer grating while having the function of vision correction, is equal to a spherical surface or non-spherical lens for correcting defects of vision, this When can then save curve lens.

As shown in Fig. 5 a-b, the nanometer grating structure function film direct combination or the first table for being prepared in curve lens On face, curve lens are also that (also referred to as optical waveguide substrates have both curve lens correction and regard in this embodiment for waveguide 130 simultaneously The effect of effect and the waveguide of power).Nanometer grating structure in the nanometer grating structure function film includes incident functional Region, relay functionality region (are not essential, decide whether according to actual needs, or using one or more Relay functionality region) and it is emitted functional region, waveguide is conducted through the image optical information come and changed by incident functional region 201 It changes direction, is directly conducted to outgoing functional region 203 through the total reflection of waveguide 130, or change by relay functionality region 202 To outgoing functional region 203 after the conduction orientation of image light.In practical applications, in order to be obtained in smaller waveguide 130 Enough optical look angle amplifications, the light between incident functional region 201 and outgoing functional region 203 cease on propagation path Relay functionality region 202 is set.People is focused to by the diffraction and convergence effect, output light that are emitted functional region 203 Eye-shaped is at virtual three dimensional image.By with transparent optical imaging and the functional region of waveguide bending function and matching for waveguide It closes, the volume and thickness of device can be substantially reduced, and by being received by what nanometer diffraction grating was constituted in each functional region Rice lens carry out image aspects and repeatedly amplify, and can obtain big visual angle three-dimensional display apparatus.Since cleverly waveguide being processed as For the curved surface (can be spherical surface or aspherical) of myopia correction or hyperopic defects, and it is multiple with nanometer grating structure function film It closes, while to realize AR or VR functions, the crowd suitable for visual impairment comfortably uses.

Fig. 6 a and Fig. 6 b are schematic diagram of the diffraction grating point in XZ planes and X/Y plane.Light is with θ (x) angle incidence functions Property region 201, optical waveguide 130 is coupled into β (x) angles, the angle of diffraction meets the total reflection of waveguide 130 and requires,For diffraction Azimuth, for changing radiation direction in optical waveguide.Light (light beam) is propagated from incident functional region 201, by relaying work( Energy property region 202 blazes abroad from outgoing functional region 203, assembles the light of output to human eye retina, make one to arrive soon Virtual three-dimensional image true to nature.The sum of three functional region position phases are 0, and phase change is not present.The diffraction of functional region The aforementioned grating equation of grating subelement design considerations carries out light orientation conduction by designing screen periods and orientation.

As shown in Fig. 7 a-b, Fig. 8 a-b, in some embodiments, it is also possible to not need optical waveguide substrates, directly processing is received The processing film of rice grating functional structure is curved-surface structure, can be bonded with curve lens, further, nanometer grating function knot Structure itself can also be the nano lens with vision correction ability, utilize reflective projection three-dimensional display device, Ke Yitong Shi Shixian AR or VR and vision correction function.

In some embodiments, in order to make nanometer grating functional structure have the function of vision correction, such as Figure 10 a-b institutes Show, nanometer grating functional structure can be made of optical grating construction unit, and each optical grating construction unit includes pixel type structon list First grating pixel, the period for the nanometer diffraction grating being equipped in each structural sub-units grating pixel and different, the Suo Youguang of orientation Grid pixel combines and forms the nano lens with optical imagery effect.This embodiment can effectively reduce lens thickness, subtract Small AR eyeglasses volume and weight promotes wear comfort.Its structural schematic diagram such as Figure 10 a.Preferably, Figure 10 b are structure dimensions In the planar structure distribution example schematic diagram of the nanometer grating functional structure of nanometer scope.In one embodiment, nanometer light Grid structure is equivalent to single off-axis nanometer Fresnel lens structure, and image can be made to dissipate or converge at human eye, be achieved in mirror The correction of refractive errors effect of piece.Each structural unit pixel 30 may include red structural sub-units grating pixel 301, green structon Unit grating pixel 302, blue structural sub-units grating pixel 303.Multiple structural sub-units grating pixels constitute different cokes The off-axis Fresnel lens structure of point.Or nanometer grating functional structure is made of three layers of nanometer grating functional structure, is corresponded to respectively In red, green, blue incident light, the bending of respective wavelength light is realized.It can be by changing by the optical field distribution of nano lens Become the design of single pixel nanostructure to realize.Traditional raster waveguiding structure has fixed screen periods and orientation, can be with Achieve the purpose that fold light path, merge virtual scene with reality.And nano lens are in addition to realizing light path folding and image co-registration Outside, also there is imaging function to the light of specific incidence angle, by designing the screen periods and orientation of each grating pixel, imaging Effect can be equivalent to single ideal spherical face mirror or aspherical (free form surface) lens, to achieve the purpose that optimization system is imaged, For example, field angle, distance of exit pupil or the range of observation of display system can be enhanced by designing nano lens increase.In addition, Primitive shape is not limited to rectangle on figure, can also be circle, diamond shape, hexagon etc..Pixel also can be mutually discrete on figure, suitably Change distance between pixels, can be allowed to meet the requirement of illumination gap.In addition, by adjusting the pixel size for scheming last pixel, structure Or the structural parameters such as groove depth can make each pixel obtain ideal diffraction efficiency, reach Uniform Illumination according to changes in spatial distribution Purpose.The nanometer grating period of single sub-pixel can be within the scope of 20nm-2000nm.In addition, the nanometer of corresponding different color Lens sub-pixel has the different angle of diffraction and focal length, to meet the requirement of amplification imaging and colored synthesis.

Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other The difference of embodiment, just to refer each other for similar portion between each embodiment.To being stated in the disclosed embodiments It is bright, so that professional and technical personnel in the field is realized or use the utility model.Various modifications to these embodiments are to ability It will be apparent for the professional technician in domain, the general principles defined herein can not depart from this practicality newly In the case of the spirit or scope of type, realize in other embodiments.Therefore, the utility model will not be by limitation and this paper institutes These embodiments shown, and it is to fit to widest range consistent with the principles and novel features disclosed in this article.

Claims (8)

1. a kind of nearly eye shows eyeglass, which is characterized in that described comprising at least one layer of optical grating construction and at least one curved substrate Nearly eye shows that eyeglass has optical diopter, one in the parameter of the optical grating construction, two or more to change light field phase With change in location for the purpose of position, the optical grating construction is produced in curved substrate, or optical grating construction is made on film, described Film matches are incorporated into curved substrate.

2. nearly eye according to claim 1 shows eyeglass, which is characterized in that design the optical grating construction according to grating equation Composed structure unit pixel, all structural unit pixels form nano lens.

3. nearly eye according to claim 1 shows eyeglass, which is characterized in that the first surface of the curved substrate and second At least one of surface is curved-surface structure.

4. nearly eye according to claim 3 shows eyeglass, which is characterized in that the first surface of the curved substrate and second In surface is wherein curved surface on one side, and another side is plane, and the optical grating construction is directly produced in the plane of curved substrate, or Optical grating construction is made on film, then the film is incorporated into the plane of curved substrate.

5. nearly eye according to claim 3 shows eyeglass, which is characterized in that the two sides of the curved substrate is all curved surface, Wherein the radius of curvature of first surface is more than the radius of curvature of second surface or the curvature half of the first surface of the curved substrate Diameter is less than the radius of curvature of second surface.

6. nearly eye according to claim 1 shows eyeglass, which is characterized in that the curved substrate and its corresponding grating knot Structure is 3 layers or 4 layers, corresponds to three primary colours or four primary optical signal respectively.

7. a kind of eyesight correction device, which is characterized in that shown including at least one nearly eye as described in claim 1-6 is any Eyeglass and connection component for plugging into near-eye display device, the nearly eye with optical diopter show that eyeglass is mounted on On connection component.

8. a kind of nearly eye display device, which is characterized in that show eyeglass, or power including any nearly eye of claim 1 to 6 Profit requires the eyesight correction device described in 7.