CN207611200U - Virtual reality display optical system - Google Patents

Abstract

The utility model provides a kind of virtual reality display optical system.The virtual reality display optical system includes light source module group, light guide module, spatial light modulator and the optical phase modulation module with the light modulation function that plane wave is converted to spherical wave.Light guide module includes horizontal light guide and vertical light guides.Light source module group is located in the input path of vertical light guides, and horizontal light guide is located on the emitting light path of vertical light guides, and spatial light modulator is located on the emitting light path of horizontal light guide, and optical phase modulation module is located on the emitting light path of spatial light modulator.The spatial light modulator of the virtual reality display optical system is not necessarily at the nearly focal plane for being placed on optical phase modulation module, compact-sized, small, light-weight；And it is based on retina image-forming principle, blur-free imaging, myopia or presbyopic user it can not need prescribing corrective glasses in entirely display field range and can clearly receive image to be displayed information yet.

Description

Virtual reality display optical system

Technical field

The utility model is related to optics display technology fields, in particular to a kind of virtual reality display optical system.

Background technology

The general visual system principle of virtual reality display optical system at present, is that display screen is placed in condenser lens The position of focal plane of (such as spherical lens or non-spherical lens or Fresnel Lenses), using basic geometric optical theory, i.e., in coke Point object after lens at the upright virtual image is amplified, the upright virtual image of the amplification of display screen is projected before user.Using this side The virtual reality of method shows that display screen need to be placed at the nearly focal plane of condenser lens by equipment, and volume is larger, heavier-weight is worn Comfort is poor.Also, it is virtual existing to need wearing myopia or presbyopia correcting glasses that can just see this clearly myopia or presbyopic user The real display content for showing equipment, or need to show that equipment increases additional focusing eyeglass and can just make myopia in the virtual reality Presbyopic user do not wear myopia or presbyopia correcting glasses can also see clearly the virtual reality show equipment display content.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of small, light-weight and myopia or long sight can be made to use Prescribing corrective glasses can not see the virtual reality display optical system of display content clearly yet at family, to solve the above problems.

To achieve the above object, the utility model provides the following technical solutions：

The utility model preferred embodiment provides a kind of virtual reality display optical system, including：Light source module group, light guide mould Group, spatial light modulator and be converted to plane wave spherical wave light modulation function optical phase modulation module, the light Guided mode group includes horizontal light guide and vertical light guides；

The light source module group is located in the input path of the vertical light guides, and the horizontal light guide is located at the vertical light guides Emitting light path on, the spatial light modulator is located on the emitting light path of the horizontal light guide, and the optical phase modulates mould Group is on the emitting light path of the spatial light modulator；

The collimation or nearly collimated illumination light beam that the light source module group provides pass through the vertical light guides and horizontal light guide respectively Progress both vertically and horizontally is transmitted and after extension, forms collimation angle pencil of ray or closely collimate angle pencil of ray, the spatial light Modulator is adjusted with carrying out the Pixel-level of light energy to the collimation angle pencil of ray or nearly collimation angle pencil of ray according to image to be displayed information System, obtains collimation light pencil corresponding with image to be displayed pixel or closely collimates light pencil, and the optical phase modulates module The collimation light pencil corresponding with image to be displayed pixel or nearly collimation light pencil be focused on human eye retina Direct imaging.

Optionally, the light source module group includes light emitting unit, optical collimator, combiner device, coupling optical fiber and collimating mirror Group.

Optionally, the light source module group further includes dissipation spot device.

Optionally, the horizontal light guide includes at least two tilting prisms, or including at least two oblique arrangements It can thoroughly can antiplane mirror.

Optionally, the horizontal light guide is made of reflecting element and diffraction element, and the diffraction element is located at the reflection Between element and spatial light modulator.

Optionally, the horizontal light guide further include can thoroughly can anti-layer, it is described can thoroughly can anti-layer be located at the reflecting element and Between diffraction element.

Optionally, the horizontal light guide is made of substrate and diffraction element, and side of the substrate far from diffraction element is risen Reflex.

Optionally, the spatial light modulator is transmission-type or reflective.

Optionally, the optical phase modulation module includes in continuous surface type lens, diffraction optical element or liquid crystal lens It is at least one.

Optionally, the virtual reality display optical system further includes the angle control micro-structure member for reducing beam exit angle Part.

Virtual reality display optical system provided by the utility model passes through to light source module group, light guide module, spatial light tune The ingenious integrated and design of device processed and optical phase modulation module so that spatial light modulator (display screen) is without being placed on optics At the nearly focal plane of phase-modulation module (condenser lens), more compact structure, volume smaller, weight are lighter, wear more comfortable；And base In retina image-forming principle, it can entirely show blur-free imaging in field range, be not required to for myopia or presbyopic user Wearing myopia or presbyopia correcting glasses all can clearly receive image to be displayed information.

Description of the drawings

It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described.It should be appreciated that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is a kind of structural schematic diagram for virtual reality display optical system that the utility model preferred embodiment provides.

Fig. 2 is a kind of structural schematic diagram for light source module group that the utility model preferred embodiment provides.

Fig. 3 is a kind of structural schematic diagram for horizontal light guide that the utility model preferred embodiment provides.

Fig. 4 is the structural schematic diagram for the horizontal light guide of another kind that the utility model preferred embodiment provides.

Fig. 5 is the schematic diagram that horizontal light guide shown in Fig. 4 is transmitted light and extends.

Fig. 6 is the structural schematic diagram for the horizontal light guide of another kind that the utility model preferred embodiment provides.

Fig. 7 is the schematic diagram that horizontal light guide shown in fig. 6 is transmitted light and extends.

Fig. 8 is the structural schematic diagram for the horizontal light guide of another kind that the utility model preferred embodiment provides.

Fig. 9 is the structural relation figure of the display area and light guide module shown in FIG. 1 of image to be displayed.

Figure 10 is the scale diagrams of non-rectangle image to be displayed display area.

A kind of virtual reality display optical system that Figure 11 the utility model preferred embodiments provide and traditional virtual reality The comparison diagram of display optical system.

For Figure 12 when applying same voltage or electric current to optical phase modulation module, there are the principles of aberration for virtual image Figure.

Figure 13 is the structural representation for another virtual reality display optical system that the utility model preferred embodiment provides Figure.

Figure 14 is the structural representation for another virtual reality display optical system that the utility model preferred embodiment provides Figure.

Figure 15 is the structural representation for another virtual reality display optical system that the utility model preferred embodiment provides Figure.

Icon:1- virtual reality display optical systems；10- light source module groups；20- light guide modules；30- spatial light modulators； 40- optical phases modulate module；11- light emitting units；12- optical collimators；13- combiner devices；14- couples optical fiber；15- is collimated Microscope group；16- dissipation spot devices；21- vertical light guides；The horizontal light guides of 22-；221- tilting prisms；222- can thoroughly can antiplane mirror； 223- reflecting elements；224- diffraction elements；225- can thoroughly can anti-layer；226- substrates；Control micro-structured component in the angles 50-；The infrared hairs of 60- Injection device；70- infrared photography modules.

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.Obviously, described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be matched with a variety of different It sets to arrange and design.

Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model Example is applied, the every other embodiment that those skilled in the art are obtained without making creative work belongs to The range of the utility model protection.

It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.In the utility model In description, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply Relative importance.

Referring to FIG. 1, Fig. 1 is a kind of structure for virtual reality display optical system 1 that the utility model embodiment provides Schematic diagram.As shown in Figure 1, the virtual reality display optical system 1 includes：Light source module group 10, light guide module 20, spatial light tune Device 30 processed and optical phase modulate module 40.

Light source module group 10 is located in the input path of light guide module 20, and collimation or nearly collimated illumination are provided for light guide module 20 Light beam.Optionally, referring to Fig. 2, in the present embodiment, light source module group 10 includes light emitting unit 11, optical collimator 12, photosynthetic Beam device 13, coupling optical fiber 14 and collimation microscope group 15.Laser light source, LED light source etc. may be used in light emitting unit 11.Optionally, In the present embodiment, which is LD laser light sources, such as generating device of laser.The laser beam emitting device can wrap soon Red laser transmitter unit 11, green laser generating unit and blue laser light emission unit 11.In other embodiments, laser The color of each laser generating unit can be configured according to actual needs in generating means, to meet the need of actual conditions It wants, is not limited herein.It is optical collimation lens that optical collimator 12, which can be selected in known technology, is sent out by laser for reducing The angle of divergence of the light beam of generating apparatus transmitting.Combiner device 13 can select the light-combining prism in known technology, not do herein specific Explanation.It can be multimode fibre or single mode optical fiber to couple optical fiber 14.The input terminal of coupling optical fiber 14 can melt globe lens, be used for Increase the bore for the laser beam that coupling optical fiber 14 can couple so that the combined beam light beam after combiner device 13 is easy to couple Into in coupling optical fiber 14.The output end of coupling optical fiber 14 can process it is tapered, for reducing the with a tight waist of output end outgoing beam Radius increases the numerical aperture of outgoing beam so that coupling optical fiber 14 exports the light beam of the big angle of emergence of small light spot.Collimate microscope group 15 The light beam of the big angle of emergence of small light spot for being exported to coupling optical fiber 14 collimates, to obtain the preferable collimated light beam of directionality Or nearly collimated light beam.Under normal conditions, after collimating microscope group 15, standard of the shooting angle within the scope of 0 °~0.5 ° can be obtained Collimated optical beam or nearly collimated light beam.In specific implementation, the with a tight waist of the light beam that setting coupling optical fiber 14 exports is located at collimation microscope group 15 Focal plane position or near, to obtain collimated light beam or nearly collimated light beam.

When transmitter unit is laser light source, light source module group 10 can also include dissipation spot device 16.Dissipation spot device 16 Instantaneous phase by changing laser, to weaken speckle effect existing for laser, makes to interfere the coherence of laser beam The beam energy that light source module group 10 provides is obtained to be more evenly distributed.Dissipation spot device 16 can select the liquid crystal phase in known technology Modulator or vibration phase plate, are not limited herein.

Light guide module 20 includes vertical light guides 21 and horizontal light guide 22.Vertical light guides 21 are used for entering the vertical light guides 21 light beam is transmitted and is extended with carrying out vertical direction.Horizontal light guide 22 is used to carry out the light beam for entering horizontal light guide 22 horizontal Transmits and extend to direction.The collimated light beam or nearly collimated light beam that light source module group 10 exports pass through vertical light guides 21 and horizontal light guide 22 carry out extension both vertically and horizontally respectively after form collimation angle pencil of ray or closely collimate angle pencil of ray.

The structure of horizontal light guide 22 can there are many.For example, horizontal light guide 22 may include at least two tilting prisms 221, as shown in Figure 1.Or as shown in figure 3, horizontal light guide 22 may include at least two oblique arrangements can thoroughly can antiplane Mirror 222.Each oblique arrangement can thoroughly can antiplane mirror 222 can be fixed by some transparent installation parts.Or horizon light Lead 22 can include simultaneously tilting prisms 221 and oblique arrangement can thoroughly can antiplane mirror 222.

In another example as shown in figure 4, horizontal light guide 22 can also be is made of reflecting element 223 and diffraction element 224, institute Diffraction element 224 is stated between the reflecting element 223 and spatial light modulator 30.Fig. 5 is horizontal light guide 22 shown in Fig. 4 The schematic diagram that light is transmitted and is extended.As shown in figure 5, the light into horizontal light guide 22 is reflected by reflecting element 223 To diffraction element 224, a part of light is diffracted 224 transmission diffraction of element and enters spatial light modulator 30, another part light It is diffracted after element 224 is reflected into reflecting element 223, diffraction element 224 is reflected by reflecting element 223 again.It is anti-again The part for penetrating the light that element 223 is reflected into diffraction element 224 is diffracted 224 transmission diffraction of element and enters spatial light modulator 30, another part is diffracted element 224 and is reflected into reflecting element 223.And so on, the light beam into horizontal light guide 22 is just realized Transmits and extend to horizontal direction.

For another example as shown in fig. 6, horizontal light guide 22 further include can thoroughly can anti-layer 225, it is described can thoroughly can anti-layer 225 be located at Between the reflecting element 223 and diffraction element 224.Fig. 7 is that horizontal light guide 22 shown in fig. 6 is transmitted and extends to light Schematic diagram.As shown in fig. 7, into horizontal light guide 22 light by reflecting element 223 be reflected into can thoroughly can anti-layer 225, one Light splitter pass through can thoroughly can anti-layer 225 enter diffraction element 224, another part light by can thoroughly can anti-layer 225 be reflected into reflection Element 223.Light into diffraction element 224 is diffracted 224 transmission diffraction of element and enters spatial light modulator 30.Can thoroughly may be used Anti- layer 225 be reflected into the light of reflecting element 223 by reflecting element 223 be reflected into again can thoroughly can be after anti-layer 225, a part of light Line pass through can thoroughly can anti-layer 225 enter diffraction element 224, another part light by can thoroughly can anti-layer 225 be reflected into reflecting element 223.Light into diffraction element 224 is diffracted 224 transmission diffraction of element and enters spatial light modulator 30.And so on, into The light beam for entering horizontal light guide 22 is transmitted and is extended with being achieved that horizontal direction.

For another example as shown in figure 8, horizontal light guide 22 can also be is made of substrate 226 and diffraction element 224.The diffraction Element 224 can be engraved in pattern with diffraction function of the substrate 226 towards 30 side of spatial light modulator.Or the diffraction Element 224 is the element for being etched with diffraction pattern on the transparent substrate, 226 optical veneering of the diffraction element 224 and substrate.This When, reflex is played in side of the substrate 226 far from the diffraction element 224, similar with the reflecting element 223 in Fig. 4.Due into Transmission and the extension principle for entering the light of the horizontal light guide 22 are similar with Fig. 4, therefore do not illustrate more herein.

Optionally, in Fig. 4, Fig. 6, horizontal light guide 22 shown in Fig. 8, the emergent light axis and spatial light of diffraction element 224 The optical axis of modulator 30 is substantially coaxial or parallel so that it is easily designed that optical phase modulates module 40.It is substantial parallel or total Axis refers to close to parallel or coaxial.When the emergent light axis of diffraction element 224 and the optical axis of spatial light modulator 30 are in acceptable model There is the deviation of low-angle and substantial parallel or coaxial in enclosing.

The structure of vertical light guides 21 can be identical as the structure of horizontal light guide 22, and modes of emplacement is different.That is vertical light guides 21 Structure can be as shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 6, Fig. 8, or counter can put down thoroughly by tilting prisms 221 and oblique arrangement Face mirror 222 collectively constitutes.

When horizontal light guide 22 and vertical light guides 21 are structure shown in fig. 1 or fig. 2, horizontal light guide 22 and vertical light guides 21 Included tilting prisms 221 or oblique arrangement can thoroughly can antiplane mirror 222 quantity respectively by preset to be shown The display area of image size both horizontally and vertically and the height of horizontal light guide 22 and vertical light guides 21 determine. For example, as shown in figure 9, the shape of the display area of preset image to be displayed is rectangle, long side is a and broadside is b. Wherein, the long side direction that horizontal direction is rectangle is defined, vertical direction is the broadside of rectangle.The height of horizontal light guide 22 is The height of h1, vertical light guides 21 are h2.Then the tilting prisms 221 included by horizontal light guide 22 or oblique arrangement counter can be put down thoroughly The quantity of face mirror 222 should be no less than a/h1, and the tilting prisms 221 or oblique arrangement included by vertical light guides 21 counter can be put down thoroughly The quantity of face mirror 222 should be no less than b/h2.Vertical light guides 21 and the height of horizontal light guide 22 have been largely fixed virtual existing The height of the size and volume of real display optical system 1, vertical light guides 21 and horizontal light guide 22 is smaller, and virtual reality shows light The size and volume of system 1 are smaller, required tilting prisms 221 or oblique arrangement can thoroughly can antiplane mirror 222 Quantity is more, and the technological requirements such as manufacture, processing, assembly are also higher.In the actual implementation process, vertical light guides 21 and horizontal light guide 22 height and included tilting prisms 221 or oblique arrangement can thoroughly can the quantity of antiplane mirror 222 can be according to concern Emphasis difference carries out comprehensive selection.

It, can be with it should be noted that the display area of preset image to be displayed is not limited to rectangle It is round, oval or other shape, as shown in Figure 10.In the case of cross-sectional shape is non-rectangle, above-mentioned Vertical Square It is the long side a and broadside b of the minimum rectangle for referring to the complete envelope cross-sectional shape to the size with horizontal direction.

The light of vertically and horizontally both direction is carried out to the light beam that light source module group 10 exports due to the use of light guide module 20 The extension of beam bore, therefore light source module group 10 is without exporting collimation angle pencil of ray or closely collimating angle pencil of ray so that light source module group 10 Optical system structure is simpler.Meanwhile as shown in figure 11, compared with traditional virtual reality display optical system 1, the utility model The virtual reality display optical system 1 of offer is not necessarily to spatial light modulator 30 (display screen) being placed on optical phase modulation module At the nearly focal plane of 40 (condenser lenses), therefore more compact structure, volume smaller, weight are lighter, promote wearing comfort.Figure 11 In, 2 indicate that traditional virtual reality display optical system 1, A indicate that display screen, B indicate condenser lens.

Referring again to Fig. 1, what spatial light modulator 30 was used to export light guide module 20 according to image to be displayed information Collimation angle pencil of ray or nearly collimation angle pencil of ray are modulated with carrying out the Pixel-level of light energy, are obtained corresponding with image to be displayed pixel Collimation light pencil closely collimates light pencil.The spatial light modulator 30 is the optical modulation device of the Pixel-level of transmission-type, such as Transmission-type LCOS spatial light modulators or transmission type LCD spatial light modulator etc..In such cases, spatial light modulator 30 is arranged Between horizontal light guide and optical phase modulation module.

2 are please referred to Fig.1, in other embodiments, the spatial light modulator 30 can also be reflective Pixel-level Optical modulation device, such as reflective LCoS spatial light modulator etc..In such cases, spatial light modulator 30 is set to level Light guide 22 modulates the side of module 40 far from optical phase, also, the inclination of the tilting prisms 221 of horizontal light guide 22 emits work Facing towards 30 side of spatial light modulator.It can similarly release, for reflective spatial light modulator 30, Fig. 2, Fig. 4, Fig. 6 Corresponding variation can also be done with the structure or set-up mode of horizontal light guide 22 shown in Fig. 8.

When light source module group 10 export Single wavelength light beam when, spatial light modulator 30 mainly by vertical polaroid, TFT glass, Liquid crystal and horizontal polaroid are constituted.When light source module group 10 exports the light beam of multi-wavelength's (such as three kinds of wavelength of red, green, blue), Spatial light modulator 30 is mainly made of vertical polaroid, TFT glass, liquid crystal, colored filter and horizontal polaroid.Spatial light Each pixel of modulator 30 is made of sub-pixel corresponding with each wavelength (such as by three sub-pixels of red, green, blue), color Colo(u)r filter contains each wavelength corresponding color optical filter (such as containing three kinds of color filters of red, green, blue), right respectively Colour mixture is carried out after the combined beam light beam sampler for a variety of (such as three kinds) wavelength that light source module group 10 exports forms colored display picture.

Optical phase modulation module 40 is the optical element with the function that plane wave is converted to spherical wave.Optical phase Modulate the collimation light pencil corresponding with image to be displayed pixel modulated to spatial light modulator 30 of module 40 or nearly collimation Light pencil makes collimation light pencil corresponding from image to be displayed pixel or nearly collimation light pencil have different meetings into line convergence Poly- angle.Exist with different convergence angles collimation light pencil corresponding with image to be displayed pixel or nearly collimation light pencil The upper direct imaging of human eye retina.

Since spatial light modulator 30 is to carrying the modulation of Pixel-level, the light of the collimation angle pencil of ray of image to be displayed information Learn convergence and optical phase modulation that phase-modulation module 40 collimates 30 modulated Pixel-level of spatial light modulator light pencil Convergent beam after module 40 is assembled in the imaging process of human eye is a kind of retina image-forming, therefore in entirely display field range It is interior can be with blur-free imaging.Also, myopia need not be worn for myopia or presbyopic user or presbyopia correcting glasses all can be clear Image to be displayed information is received clearly, improves wearing comfort.

Optical phase modulation module 40 can be continuous surface type lens, diffraction optical element, liquid crystal lens or its arbitrary group It closes.Optionally, in the present embodiment, optical phase modulation module 40 is diffraction optical element.The diffraction optical element can be With diffraction micro structural optical element or holographic optical elements (HOE).Optionally, in the present embodiment, optical phase is modulated module 40 and is selected With diffraction micro structural optical element.When the light beam that light source module group 10 exports is Single wavelength light beam, optical phase modulates module 40, which can be one layer, has diffraction micro structural optical element, and the focus that the diffraction micro structural optical element is arranged is attached in reception human eye Closely.When the light beam that light source module group 10 exports is multi-wavelength beam, it can be multilayer and light beam wave that optical phase, which modulates module 40, Length is corresponding, and there is diffraction micro structural optical element to stack, to eliminate aberration.For example, when light source module group 10 export it is red, green, When the light beam of blue three kinds of wave bands, optical phase modulation module 40 is three layers, and there is diffraction micro structural optical element to stack, if It counts first layer diffraction micro structural optical element and phase-modulation is carried out to the light beam of blue wave band, not to red and green two kinds of wave band light beams With phase-modulation effect；It designs second layer diffraction micro structural optical element and phase-modulation is carried out to the light beam of red spectral band, it is right It is blue to be acted on without phase-modulation with green two kinds of wave band light beams；Third layer diffraction micro structural optical element is designed to green light band Light beam carries out phase-modulation, is acted on without phase-modulation with blue two kinds of wave band light beams red.During actual implementation, diffraction light The optical phase modulation module 40 for learning element versions can be the method etching diffraction micro structural for using photoetching on the transparent substrate, Can also be first to make the mother matrix with diffraction micro structural pattern, by the pattern on mother matrix with graph transfer printing method by the micro- knot of diffraction Structure pattern is transferred on special mantle, finally again pastes the mantle with diffraction micro structural figure on the transparent substrate.

As shown in figure 13, in other embodiments, optical phase modulation module 40 can be single continuous surface type lens, Or the lens group of multiple continuous surface type lens compositions.For example, when the light beam that light source module group 10 exports is Single wavelength, can select Single continuous surface type lens carry out phase-modulation.When the light beam that light source module group 10 exports is multi-wavelength, double gluings can be selected Achromatic lens group, three glued achromatic lens groups or four glued achromatic lens groups etc., by the plane wave of multiple wavelength light beams The identical spherical wave of phase is converted to, to eliminate aberration.

As shown in figure 14, above-mentioned virtual reality display optical system 1 can also include that micro-structured component 50 is controlled at angle.Angle control is micro- Structural detail 50 is a kind of optical element sensitive to incident angle, when micro-structured component 50 is controlled at incident vector and the angle of light beam When the angle of the normal of working face meets design angle value, light beam can just pass through angle to control micro-structured component 50.Light source module group Not only there are one direction, (such as what is exported as described above is 0 °~0.5 ° range to the collimated light beams or nearly collimated light beam of 10 outputs Interior collimated light beam or nearly collimated light beam), influence whether the resolution ratio for the virtual display image that human eye receives.By the way that angle is arranged Control micro-structured component 50 can reduce the shooting angle for the light beam that micro-structured component 50 is controlled by angle, to improve virtual display figure The resolution ratio of picture.For example, the angular range that angle control micro-structured component 50 designs is -0.1 °~0.1 °, and during actual implementation, angle Control micro-structured component 50 angle design value can be according to practical application to visual effect requirement be designed selection.It is aobvious and easy See, angle control micro-structured component 50 can be arranged in light source module group 10 at any position between optical phase modulation module 40. For example, angle control micro-structured component 50 is arranged between light source module group 10 and vertical light guides 21, for being exported to light source module group 10 Light beam chosen；Angle control micro-structured component 50 is arranged between vertical light guides 21 and horizontal light guide 22, for vertical The light beam that light guide 21 exports is chosen；By the setting of angle control micro-structured component 50 horizontal light guide 22 and spatial light modulator 30 it Between, the light beam for being exported to horizontal light guide 22 is chosen；Angle control micro-structured component 50 is arranged in spatial light modulator 30 Between optical phase modulation module 40, the light beam for being exported to spatial light modulator 30 is chosen.Optionally, in this reality It applies in example, angle is controlled micro-structured component 50 and is arranged between horizontal light guide 22 and spatial light modulator 30.Similarly, angle control micro-structure member Part 50 can be with more than one, such as two, three, four etc..

In the actual implementation process, control micro-structured component 50 in angle can first make the mother matrix with micro structured pattern, will Micro structured pattern is transferred on special mantle by the pattern on mother matrix with graph transfer printing method, then the angle control of mantle form is micro- Structural detail 50 is covered in light source module group 10, horizontal light guide 22, vertical light guides 21, spatial light modulator 30 or optics with optical cement In the plane of phase-modulation module 40 etc., the assembly complexity of angle control micro-structured component 50 is reduced.For example, when micro-structure is controlled at angle When element 50 is arranged between horizontal light guide 22 and spatial light modulator 30, angle can be controlled to 50 docile of micro-structured component in level Light guide 22 is in the plane of 30 side of spatial light modulator.

As shown in figure 15, in a kind of mode in the cards, above-mentioned virtual reality display optical system 1 further includes infrared Emitter 60 and infrared photography module 70.Infrared launcher 60 can be that infrared LED light source or infrared LD light sources etc. are infrared Light source is not limited herein.Infrared launcher 60 can be positioned over any one of display optical system.Actual implementation process In, it need to only ensure that light beam that infrared launcher 60 is sent out can cover human eye range and will not be to the visual field of projection imaging and pre- If external environment field of view cause to block.Infrared photography module 70 is for recipient's eye infrared image and to picture number According to being stored.Infrared photography module 70 can also be connected with processor, and processor can carry out eyeball according to the data of storage Detection, identifies the location of eyeball, direction of gaze state etc., and is executed according to information such as the direction of gaze of eyeball different Eye control operation.For example, if recognizing human eye, blinkpunkt is maintained at some control location of graphic interface within the set time, Carry out corresponding system operatio of this control etc..

In order to meet certain specific functional requirements, optionally to the portion of above-mentioned virtual reality display optical system 1 Part carries out increasing plating anti-reflection film, stiffened film, and the functionality film layer such as antifog film is not limited herein.Also, when virtual reality shows light System 1 be applied to virtual reality glasses when, the virtual reality glasses further include wear, eyeshade, shading piece and will it is above-mentioned virtually The structural member that component included by real display optical system 1 connects.The shading piece is for preventing ambient light from passing through Light guide module 20, spatial light modulator 30, optical phase modulation module 40 and angle control micro-structured component 50 etc. is crossed to transmit into human eye. The eyeshade prevents ambient light directly pleasing to the eye for covering at human eye.

The virtual reality display optical system 1 that the utility model embodiment provides passes through to light source module group 10, light guide module 20, the ingenious integrated and design of spatial light modulator 30 and optical phase modulation the module 40 so that (display of spatial light modulator 30 Screen) without being placed at the nearly focal plane of optical phase modulation module 40 (condenser lens), more compact structure, volume smaller, weight It is lighter, it wears more comfortable；And it is based on retina image-forming principle, blur-free imaging in field range can be entirely being shown, for close Depending on or presbyopic user for need not wear myopia or presbyopia correcting glasses all can clearly receive image to be displayed information.Together When, the virtual reality display optical system 1 that the utility model embodiment provides can also include infrared launcher 60 and infrared Camera module 70 can be used for eye tracking etc. to obtain human eye infrared image.

Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only It is an example in a series of equivalent or similar characteristics.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of virtual reality display optical system, which is characterized in that including：Light source module group, light guide module, spatial light modulator Module is modulated with the optical phase for the light modulation function of being converted to spherical wave with plane wave, the light guide module includes horizon light It leads and vertical light guides；

The light source module group is located in the input path of the vertical light guides, and the horizontal light guide is located at going out for the vertical light guides It penetrates in light path, the spatial light modulator is located on the emitting light path of the horizontal light guide, optical phase modulation module position In on the emitting light path of the spatial light modulator；

The collimation or nearly collimated illumination light beam that the light source module group provides are carried out by the vertical light guides and horizontal light guide respectively It both vertically and horizontally transmits and after extension, forms collimation angle pencil of ray or closely collimate angle pencil of ray, the space light modulation Device is modulated with carrying out the Pixel-level of light energy to the collimation angle pencil of ray or nearly collimation angle pencil of ray according to image to be displayed information, is obtained Light pencil is collimated to collimation light pencil corresponding with image to be displayed pixel or closely, the optical phase modulates module to described Collimation light pencil corresponding with image to be displayed pixel or nearly collimation light pencil be focused on human eye retina directly at Picture.

2. virtual reality display optical system according to claim 1, which is characterized in that the light source module group includes light hair Penetrate unit, optical collimator, combiner device, coupling optical fiber and collimation microscope group.

3. virtual reality display optical system according to claim 2, which is characterized in that the light source module group further includes disappearing Speckle device.

4. virtual reality display optical system according to claim 1, which is characterized in that the horizontal light guide includes at least Two tilting prisms, or including at least two oblique arrangements can thoroughly can antiplane mirror.

5. virtual reality display optical system according to claim 1, which is characterized in that the horizontal light guide is by reflector Part and diffraction element are constituted, and the diffraction element is between the reflecting element and spatial light modulator.

6. virtual reality display optical system according to claim 5, which is characterized in that the horizontal light guide further includes can Thoroughly can anti-layer, it is described can thoroughly can anti-layer between the reflecting element and diffraction element.

7. virtual reality display optical system according to claim 1, which is characterized in that the horizontal light guide by substrate and Diffraction element is constituted, and reflex is played in side of the substrate far from diffraction element.

8. virtual reality display optical system according to claim 1, which is characterized in that the spatial light modulator is Penetrate formula or reflective.

9. virtual reality display optical system according to claim 1, which is characterized in that the optical phase modulates module Including at least one of continuous surface type lens, diffraction optical element or liquid crystal lens.

10. according to claim 1-9 any one of them virtual reality display optical systems, which is characterized in that described virtual existing Real display optical system further includes the angle control micro-structured component for reducing beam exit angle.