CN107783297A - Nearly eye display device - Google Patents
Nearly eye display device Download PDFInfo
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- CN107783297A CN107783297A CN201711172616.7A CN201711172616A CN107783297A CN 107783297 A CN107783297 A CN 107783297A CN 201711172616 A CN201711172616 A CN 201711172616A CN 107783297 A CN107783297 A CN 107783297A
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- 238000010168 coupling process Methods 0.000 claims abstract description 60
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- 239000000758 substrate Substances 0.000 claims abstract description 47
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 230000011514 reflex Effects 0.000 claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims description 41
- 239000000835 fiber Substances 0.000 claims description 11
- 238000002310 reflectometry Methods 0.000 claims description 4
- 241001270131 Agaricus moelleri Species 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 6
- 210000001508 eye Anatomy 0.000 description 114
- 238000010586 diagram Methods 0.000 description 6
- 230000003190 augmentative effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computer Graphics (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
Abstract
The present invention provides a kind of nearly eye display device, including Planar waveguide array display device, infrared launcher, infrared photography module and the infrared external reflection diffraction element that plane wave can be converted to spherical wave.Planar waveguide array display device includes display output light group, guide-lighting substrate and at least one inclination coupling surface.Tilt coupling surface be covered with to visible light wave range can thoroughly can be anti-spectro-film.Infrared external reflection diffraction element is arranged at guide-lighting substrate close to the side of human eye or remote human eye.The reflection emergent light axis of infrared external reflection diffraction element is substantial parallel or coaxial with the optical axis of infrared photography module.The infrared light covering human eye scope of infrared launcher transmitting, the infrared light of people's eye reflex are obtained by the human eye virtual image formed after infrared external reflection diffraction element reflection diffraction by infrared photography module.The nearly eye display device realizes is obtained with image of clearly looking straight without face human eye, does not disturb user to watch the visual effect of virtual screen, available for eye tracking, iris recognition etc..
Description
Technical field
The present invention relates to augmented reality field, in particular to a kind of nearly eye display device.
Background technology
Augmented reality (AR, Augmented Reality) is to carry out reality to real scene using dummy object or information
The technology of enhancing, it is widely used in each field such as scientific research, military affairs, industry, game, video, education.With the development of emerging technology
And extensive use, the protection and payment of the individual privacy used such as use will also highlight at the safety issue.Iris recognition carries out body
Part certification is considered as to be only second to the biotechnology of DNA identifications, and iris recognition technology is solved applied to nearly eye display device
User is using the Authentication Questions such as the access right of display device, transaction payment, is technology trends.
Iris recognition module requires that the camera of shooting eye image is right against human eye, most effective, most reliable to obtain
Eye image.And when nearly eye display device is augmented reality glasses, camera, which is right against human eye, can block user's sight, inconvenience
External environment is observed in user.
The content of the invention
In view of this, it disclosure satisfy that iris recognition requirement it is an object of the invention to provide one kind and do not block user's sight
Nearly eye display device, to solve the above problems.
To achieve the above object, the present invention provides following technical scheme：
Present pre-ferred embodiments provide a kind of nearly eye display device, including Planar waveguide array display device, infrared hair
Injection device, infrared photography module and the infrared external reflection diffraction element that plane wave can be converted to spherical wave, the slab guide battle array
Row display device includes display output light group, guide-lighting substrate and at least one inclination coupling surface, and the inclination coupling surface is covered with pair
Visible light wave range can thoroughly can be anti-spectro-film；
The infrared external reflection diffraction element is arranged at the guide-lighting substrate close to the side of human eye or remote human eye, described red
The reflection emergent light axis and the optical axis of the infrared photography module of external reflectance diffraction element are substantial parallel or coaxial；
The image light of the display output light group output is during the guide-lighting substrate transport, parts of images light quilt
At least one inclination coupling surface enters human eye through the guide-lighting substrate after reflecting respectively and forms virtual image, for true
The virtual display of the artificial additional information of real world environments；Real world light by the infrared external reflection diffraction element,
Guide-lighting substrate and at least one inclination coupling surface are directly transmitted into human eye；The infrared light covering of the infrared launcher transmitting
Human eye scope, the human eye virtual image that the infrared light of people's eye reflex is formed after the infrared external reflection diffraction element reflection diffraction are described
Infrared photography module obtains.
Alternatively, the infrared external reflection diffraction element is one layer of transparent mantle with infrared external reflection diffraction pattern characteristic,
The infrared external reflection diffraction element is attached at the guide-lighting substrate.
Alternatively, the infrared external reflection diffraction element is the member for being etched with infrared external reflection diffraction pattern on the transparent substrate
Part, the infrared external reflection diffraction element and the guide-lighting substrate have the air gap or the infrared external reflection diffraction element with it is described
Guide-lighting substrate is glued together.
Alternatively, the infrared launcher includes at least one first infrared light supply.
Alternatively, the infrared launcher is optical fiber type infrared launcher.
Alternatively, the optical fiber type infrared launcher includes the second infrared light supply, fiber coupling module and optical fiber；
The infrared light of the second infrared light supply transmitting is after the fiber coupling module is coupled into the optical fiber, from the light
Fine exit end enters human eye.
Alternatively, the optical fiber includes multiple exit ends, make the light beam for being coupled into the optical fiber be divided into multi-beam respectively from
The multiple exit end outgoing.
Alternatively, the exit end is sphere, the conical surface, hyperboloid or scarf.
Alternatively, the optical fiber type infrared launcher also homogenizes device including light, and the light homogenizes device and covers at institute
The exit end of optical fiber is stated, the light beam of the nearly Gaussian Profile of the fiber exit is converted into nearly flat-top distribution light.
Alternatively, the inclination coupling surface has four, the ratio of four transmissivities and reflectivity for tilting coupling surface
Respectively 0.25,0.35,0.45 and 0.95.
Nearly eye display device provided by the invention is by setting infrared external reflection diffraction element and infrared external reflection diffraction element
Reflect emergent light axis and the optical axis of the infrared photography module is substantial parallel or coaxial, to form the human eye virtual image, and make the people
Distance of the eye virtual image away from infrared photography module is more than the nearest operating distance of infrared photography module, to be obtained by infrared photography module
Take.It is achieved thereby that infrared photography module is obtained with image of clearly looking straight without face human eye, and do not disturb user couple
The reception of real world light, verified available for eye tracking, iris recognition identification etc..Wherein, image of looking straight refers to
Imitate in the eye image of the shooting angle shooting with face human eye.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described.It should be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structural representation for nearly eye display device that present pre-ferred embodiments provide.
Fig. 2 is the light path schematic diagram that the virtual image of nearly eye display device in Fig. 1 is shown.
Fig. 3 is the light path schematic diagram that nearly eye display device carries out human eye virtual image forming in Fig. 1.
Fig. 4 is the structure chart of nearly eye display device in another embodiment.
Fig. 5 is the light path schematic diagram that nearly eye display device carries out human eye virtual image forming in Fig. 4.
Fig. 6 is the structure chart of nearly eye display device in another embodiment.
Fig. 7 is the structure chart at another visual angle of nearly eye display device in Fig. 6.
Fig. 8 is the structure chart of nearly eye display device in another embodiment.
Fig. 9 is the structure chart at another visual angle of nearly eye display device in Fig. 8.
Figure 10 is the structure chart of nearly eye display device in another embodiment.
Figure 11 is the structure chart of nearly eye display device in another embodiment.
Icon:The nearly eye display devices of 1-；30- infrared launchers；50- infrared photography modules；70- infrared external reflections diffraction member
Part；11- display output light groups；13- leaded light substrates；151- first tilts coupling surface；153- second tilts coupling surface；155- the 3rd
Tilt coupling surface；157- the 4th tilts coupling surface；31-
One infrared light supply；S131- inclined cuts；The working faces of S133- first；The working faces of S135- second；33-
Two infrared light supplies；35- fiber coupling modules；37- optical fiber；371- exit ends；The first non-optical working faces of S137-；S139- second
Non-optical working face；39- light homogenizes device.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on embodiments of the invention, people in the art
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.In description of the invention
In, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing description, and it is not intended that being or implying relative
Importance.
Fig. 1 is refer to, Fig. 1 is a kind of schematic diagram of nearly eye display device 1 provided in an embodiment of the present invention.As shown in figure 1,
The nearly eye display device 1 includes：Planar waveguide array display device, infrared launcher 30, infrared photography module 50 and red
External reflectance diffraction element 70.
The Planar waveguide array display device includes display output light group 11, guide-lighting substrate 13 and at least one inclination coupling
Conjunction face.Exported after the light cone beam collimation that display output light group 11 is used to export each pixel to be shown on image display
It is coupled into guide-lighting substrate 13.Display output light group 11 can be normal image display device, such as LCOS display, OLED self-luminous
Display and optical imaging system etc..It is described tilt coupling surface be covered with to visible light wave range can thoroughly can be anti-spectro-film.It is described to incline
Oblique coupling surface can have one, it is two or more, tilt the number of coupling surface and each transmission for tilting coupling surface and obtaining spectro-film
The ratio of rate and reflectivity can be configured by actual demand.Alternatively, in the present embodiment, the inclination coupling surface has four
It is individual, the first inclination coupling surface 151, second is designated as respectively tilts the inclination inclination coupling of coupling surface 155 and the 4th of coupling surface the 153, the 3rd
Conjunction face 157.First, which tilts coupling surface 151, second, tilts the inclination inclination coupling surface of coupling surface 155 and the 4th of coupling surface the 153, the 3rd
157 transmissivity and the ratio of reflectivity are respectively 0.25,0.35,0.45 and 0.95.Accordingly, first tilt coupling surface 151,
Second inclination coupling surface the 153, the 3rd tilt coupling surface 155 and the 4th tilt the energy that coupling surface 157 exports be 0.25 respectively,
0.2625th, 0.2194,0.2547, coupling export gross energy be 0.9866.It is uniform so as to couple output energy comparison in acquisition
In the case of the energy that is provided close to display output light group 11 of gross energy.
Infrared launcher 30 is the device for launching infrared ray.Alternatively, in the present embodiment, outer emitter is first
Infrared light supply 31.First infrared light supply 31 can be infrared LED light source, infrared LD light sources etc. alternatively, in the present embodiment
Infrared launcher 30 can be positioned over any one of nearly eye display device 1, can cover human eye scope and will not be to projection imaging
The visual field and default external environment field of view cause to block.Infrared photography module 50 can be that infrared camera etc. can enter
The instrument of row infrared imaging.The wavelength for the infrared light that infrared launcher 30 is launched may be, but not limited to, 940nm.940nm's
Infrared light people can not see, therefore does not influence user and watch virtual image or observation external environment.
The infrared external reflection diffraction element 70 is arranged at the guide-lighting substrate 13 close to the side of human eye or remote human eye.Institute
Spherical wave can be converted to by plane wave by stating infrared external reflection diffraction element 70.The infrared external reflection diffraction element 70 can be one layer of tool
There is the transparent mantle of infrared external reflection diffraction pattern characteristic, the infrared external reflection diffraction element 70 is attached at the guide-lighting substrate 13.
The infrared external reflection diffraction element 70 can also be the element for being etched with infrared external reflection diffraction pattern on the transparent substrate, described red
External reflectance diffraction element 70 with the guide-lighting substrate 13 there is the air gap or the infrared external reflection diffraction element 70 to be led with described
Light substrate 13 is glued together.The reflection emergent light axis of the infrared external reflection diffraction element 70 and the infrared photography module 50
Optical axis is substantial parallel or coaxial.Wherein, it is substantial parallel or coaxial refer to close to parallel or coaxial.For the infrared external reflection
The optical axis of the reflection emergent light axis and the infrared photography module 50 of diffraction element 70 has the inclined of low-angle in tolerance interval
Difference, and it is substantial parallel or coaxial.
When the infrared external reflection diffraction element 70 is arranged at the side of the guide-lighting substrate 13 away from human eye, the nearly eye is shown
The light path schematic diagram that the virtual image of device 1 is shown is as shown in Figure 2.The guide-lighting substrate 13 includes inclined cut S131, the
One working face S133 and the second working face S135.The image light that the display output light group 11 exports enters guide-lighting substrate
13, the first working face S133 is totally reflected to by the inclined cut S131 of guide-lighting substrate 13, the first working face S133 is to entering
The light beam penetrated is totally reflected to the second working face S135 again.By that analogy, the light beam of display output light group 11 passes through in leaded light
Multiple reflections between the first working face S133 and the second working face S135 of substrate 13 complete the transmission of light beam.Light beam passes
It is defeated to first tilt coupling surface 151 when, a part of light beam reflected after through after the second working face of guide-lighting substrate 13 to human eye
Direction is propagated, and another part light beam continues across first work of the onwards transmission of the first inclination coupling surface 151 to guide-lighting substrate 13
Plane S133, the beam Propagation after being totally reflected by the first working face S133 tilt coupling surface 153 to second.Second is transferred to incline
The light beam part in the oblique face of coupling surface 153 is propagated after the second working face of guide-lighting substrate 13 is passed through after being reflected to human eye direction,
Another part continues to transmit through the second inclination coupling surface 153.In this way, light beam tilts coupling surface 151, the by first successively
Two inclination coupling surfaces the 153, the 3rd are tilted after coupling surface the 155, the 4th tilts the reflection of the part of coupling surface 157 and formed virtually into human eye
Image, the virtual display for the artificial additional information to real world.Also, the nearly eye display device 1 also achieves
Light beam exports the extension of bore, increases exit pupil diameter.
Real world light is direct by the infrared external reflection diffraction element 70, guide-lighting substrate 13 and inclination coupling surface
It is transmitted into human eye.
As shown in figure 3, when the nearly eye display device 1 carries out human eye virtual image forming, infrared launcher 30 is launched infrared
After the infrared light of light covering human eye scope, people's eye reflex or scattering passes through guide-lighting substrate 13 and tilts coupling surface, by described red
The human eye virtual image formed after the reflection diffraction of external reflectance diffraction element 70 is obtained by the infrared photography module 50.Due to described infrared
The reflection emergent light axis PK and the optical axis OG of the infrared photography module 50 of reflection diffraction element 70 are substantial parallel or coaxial, because
This infrared photography module 50 can look straight imaging to human eye.The physical distance L1+L2 of human eye to infrared photography module 50 is very short, leads to
Often less than 100mm.And the nearest operating distance of infrared photography module 50 is typically much deeper than this value, generally between 300mm~3m.
Therefore, if infrared photography module 50 is directly imaged to the infrared ray of people's eye reflex, clearly human eye picture can not be obtained.For
Solve the above problems, nearly eye display device 1 provided in an embodiment of the present invention includes plane wave can be converted to the infrared of spherical wave
Reflection diffraction element 70.Infrared external reflection diffraction element 70 can form the human eye virtual image at infrared photography module 50L, infrared
Camera module 50 to human eye virtual image forming infrared photography module 50 receiving plane.Wherein, L can be more than 300nm, even up to
5m, then L fall in the range of the operating distance of infrared photography module 50, meet the blur-free imaging of infrared photography module 50 distance will
Ask.Clearly as infrared external reflection diffraction element 70 imaging effect increase indirectly human eye to infrared photography module 50 etc.
Imitate physical distance so that infrared photography module 50 can obtain the picture rich in detail of looking straight of human eye.Under normal circumstances, it is raising human eye
The transmitance of the infrared light of reflection can also be to guide-lighting substrate 13 and inclination coupling surface plating infrared anti-reflection film.
In the prior art, infrared photography module 50 is directed towards human eye, and directly the infrared ray of people's eye reflex is imaged.For
Infrared photography module 50 is avoided to cause partially or fully to block to the user visual field, infrared photography module 50 usually requires to be placed on
The periphery of the viewing area of nearly eye display device 1, the optical axis and human eye optical axis for then causing infrared photography module 50 have wide-angle
Deviation, it is impossible to obtain the image of looking straight of human eye.Also, physical distance of the human eye away from infrared photography module 50 is generally less than
100mm, less than the nearest operating distance (between 300mm~3m) of infrared photography module 50, it is clear to be unsatisfactory for infrared photography module 50
The required distance of clear imaging.
Therefore, nearly eye display device 1 provided in an embodiment of the present invention is obtained with clearly looking straight without face human eye
Image, reception of the user to real world light is not disturbed, verified available for eye tracking, iris recognition identification etc..Its
In, image of looking straight refers to be equivalent to the eye image of the shooting angle shooting of face human eye.
Shown when the infrared external reflection diffraction element 70 is arranged at the guide-lighting substrate 13 close to the side of human eye, the nearly eye
The structure of device 1 is as shown in Figure 4.The light path schematic diagram that the nearly eye display device 1 carries out human eye virtual image forming is as shown in Figure 5.It is red
The infrared light of the infrared light covering human eye scope that outer emitter 30 is launched, people's eye reflex or scattering is spread out by the infrared external reflection
The human eye virtual image formed is penetrated after the reflection diffraction of element 70 to be obtained by the infrared photography module 50.By infrared external reflection diffraction element 70
The guide-lighting substrate 13 is arranged at close to the side of human eye so that people's eye reflex or the infrared light of scattering are directly by described infrared
The human eye virtual image formed after the reflection diffraction of reflection diffraction element 70 is obtained by the infrared photography module 50 again, avoids by leaded light
The transmitance of people's eye reflex or the infrared light of scattering caused by substrate 13 and inclination coupling surface reduces and infrared veiling glare is to human eye
The influence of image taking, so as to which infrared photography module 50 can obtain apparent eye image.
As shown in Figure 6 and Figure 7, Fig. 6 is the structure chart of nearly eye display device 1 in another embodiment, and Fig. 7 is near in Fig. 6
The structure chart at another visual angle of eye display device 1.It is similar with Fig. 1, unlike：The infrared launcher 30 includes multiple the
One infrared light supply 31.
The light beam of each first infrared light supply 31 towards human eye direction, multiple first infrared light supplies 31 can be uniform intervals
Set.Meanwhile to cause the first infrared light supply 31 to be more irradiated to human eye, the slant setting of the first infrared light supply 31 can be caused
The primary axis of light emission of first infrared light supply 31 is intersected in the position of human eye.In actual applications, can be in the guide-lighting substrate 13
Some each first infrared light supplies 31 are arranged in the first non-optical non-optical working face S139 both sides of working face S137 and second.Wherein,
The first non-optical non-optical working face S139 of working face S137 and second are relative, and be clipped in the first working face and the second working face it
Between.
The beam divergence angle of general first infrared light supply 31 is between 160 °~180 °, and energy utilization is low.In order to improve energy
Measure utilization rate and reduce power consumption, alternatively, in other embodiment provided by the invention, the infrared launcher 30 is light
Fine 37 formula infrared launchers 30.The numerical aperture of the formula infrared launcher 30 of optical fiber 37 is usually 0.1~0.2, corresponding light
Beam divergence angle is between 5.74 °~11.54 °.For the optical fiber 37 that exit end 371 is sphere, the conical surface, hyperboloid or scarf etc.
The numerical aperture of formula infrared launcher 30 is usually 0.3~0.7, corresponding beam divergence angle be 17.46 °~44.43 ° it
Between.
As shown in Figure 8 and Figure 9, Fig. 8 and Fig. 9 is the structure chart of nearly eye display device 1 in another embodiment.With Fig. 1 classes
Seemingly, unlike：The infrared launcher 30 is the formula infrared launcher 30 of optical fiber 37, the formula infrared emission of optical fiber 37 dress
Putting 30 includes the second infrared light supply 33, fiber coupling module 35 and optical fiber 37.
Wherein, the second infrared light supply 33 can be infrared LED light source, infrared LD light sources etc..The exit end 371 of optical fiber 37 is tight
The side side wall of the adjacent guide-lighting substrate 13, optical fiber 37 extend to light along the first non-optical working face S137 of guide-lighting substrate 13
Fine coupling module 35, fiber coupling module 35 can be arranged on the inclined cut S131 of guide-lighting substrate 13 side so that near
The more compact structure of eye display device 1.In actual use, can be as needed in guide-lighting 13 first non-optical working face of substrate
The non-optical working face S139 of S137 and/or second set multiple above-mentioned formula infrared emission devices of optical fiber 37.
The infrared light that second infrared light supply 33 is launched after the fiber coupling module 35 is coupled into the optical fiber 37, from
The exit end 371 of the optical fiber 37 is emitted, into human eye.
As shown in Figure 10, Figure 10 is the structure chart of nearly eye display device 1 in another embodiment.It is similar with Fig. 9, it is different
It is：The optical fiber 37 includes multiple exit ends 371, the light beam for being coupled into the optical fiber 37 is divided into multi-beam respectively from described more
Individual exit end 371 is emitted.
The optical fiber 37 can draw cone into the optical fiber 37 for including multiple exit ends 371 by way of fused biconical taper.
To cause the scope of the infrared light covering human eye of the single formula infrared launcher 30 of optical fiber 37 transmitting bigger, optical fiber 37
It can use the exit end 371 of multimode fibre 37 and optical fiber 37 can be with right and wrong plane section, such as sphere, the conical surface, hyperboloid or beveling
Face etc., to increase the numerical aperture of the exit end 371 of optical fiber 37, that is, increase the angle of divergence of the outgoing beam of optical fiber 37.It is infrared to cause
It is higher to launch the utilization rate of light, the exit end 371 of optical fiber 37 can be with slant setting, and light beam is concentrated to be launched towards human eye.
As shown in figure 11, in order that optical power detection, alternatively, in the present embodiment, the infrared hair of the formula of optical fiber 37
Injection device 30 also homogenizes device 39 including light, and the light homogenizes the exit end 371 that device 39 covers at the optical fiber 37, by institute
The light beam for stating the nearly Gaussian Profile of the outgoing of optical fiber 37 is converted to nearly flat-top distribution light.
Alternatively nearly eye display device 1 provided in an embodiment of the present invention can also include control module.Control module at least
Including main control module and eye pattern computing unit.The main control module is the regulation and control center of the nearly eye display device 1, and it can lead to
Other function module datas that FPC is crossed with nearly eye display device 1 communicate.Eye pattern computing unit is according to the infrared photography module 50
The image analysis processing of looking straight collected obtains the iris feature of user and the real-time location coordinates of user eyeball, passes the information on
To main control module.The iris feature of user of the main control module to receiving carries out authentication, and according to the user's received
The positional information of eyeball performs different eye control operations.If kept for example, recognizing human eye blinkpunkt within the time of setting
In some control location of graphic interface, system operatio etc. corresponding to this control is carried out.
When the nearly eye display device 1 is augmented reality glasses, the nearly eye display device 1 also includes the part worn (such as
Temple) and above-mentioned Planar waveguide array display device, infrared launcher 30, infrared photography module 50 and infrared external reflection spread out
Penetrate the structural member that element 70 connects.
Nearly eye display device 1 provided in an embodiment of the present invention, realizing infrared photography module 50 can without face human eye
To obtain image of clearly looking straight, and reception of the user to real world light is not disturbed, available for eye tracking, iris
Identify authentication etc..
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically chatting
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of nearly eye display device, it is characterised in that including Planar waveguide array display device, infrared launcher, infrared
Camera module and the infrared external reflection diffraction element that plane wave can be converted to spherical wave, the Planar waveguide array display device bag
Display output light group, guide-lighting substrate and at least one inclination coupling surface are included, the inclination coupling surface is covered with can to visible light wave range
Spectro-film that thoroughly can be anti-；
The infrared external reflection diffraction element is arranged at the guide-lighting substrate close to the side of human eye or remote human eye, described infrared anti-
Reflection emergent light axis and the optical axis of the infrared photography module for penetrating diffraction element are substantial parallel or coaxial；
For the image light of the display output light group output during the guide-lighting substrate transport, parts of images light is described
At least one inclination coupling surface enters human eye through the guide-lighting substrate after reflecting respectively and forms virtual image, for true generation
The virtual display of the artificial additional information of boundary's environment；Real world light is by the infrared external reflection diffraction element, leaded light
Substrate and at least one inclination coupling surface are directly transmitted into human eye；The infrared light covering human eye of the infrared launcher transmitting
Scope, the human eye virtual image that the infrared light of people's eye reflex is formed after the infrared external reflection diffraction element reflection diffraction is by described infrared
Camera module obtains.
2. nearly eye display device according to claim 1, it is characterised in that the infrared external reflection diffraction element is one layer of tool
There is the transparent mantle of infrared external reflection diffraction pattern characteristic, the infrared external reflection diffraction element is attached at the guide-lighting substrate.
3. nearly eye display device according to claim 1, it is characterised in that the infrared external reflection diffraction element is transparent
The element of infrared external reflection diffraction pattern is etched with substrate, the infrared external reflection diffraction element has air with the guide-lighting substrate
Gap or the infrared external reflection diffraction element and the guide-lighting substrate are glued together.
4. nearly eye display device according to claim 3, it is characterised in that the infrared launcher includes at least one
First infrared light supply.
5. nearly eye display device according to claim 3, it is characterised in that the infrared launcher is that optical fiber type is infrared
Emitter.
6. nearly eye display device according to claim 5, it is characterised in that the optical fiber type infrared launcher includes the
Two infrared light supplies, fiber coupling module and optical fiber；
The infrared light of the second infrared light supply transmitting is after the fiber coupling module is coupled into the optical fiber, from the optical fiber
Exit end enters human eye.
7. nearly eye display device according to claim 6, it is characterised in that the optical fiber includes multiple exit ends, makes coupling
The light beam for entering the optical fiber is divided into multi-beam respectively from the outgoing of the multiple exit end.
8. the nearly eye display device according to claim 6 or 7, it is characterised in that the exit end is sphere, the conical surface, double
Curved surface or scarf.
9. the nearly eye display device according to claim 6 or 7, it is characterised in that the optical fiber type infrared launcher is also
Device is homogenized including light, the light homogenizes the exit end that device covers at the optical fiber, by the nearly Gauss of the fiber exit
The light beam of distribution is converted to nearly flat-top distribution light.
10. the nearly eye display device according to claim any one of 1-7, it is characterised in that the inclination coupling surface has four
Individual, the ratio of four transmissivities for tilting coupling surface and reflectivity is respectively 0.25,0.35,0.45 and 0.95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711172616.7A CN107783297A (en) | 2017-11-22 | 2017-11-22 | Nearly eye display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172616.7A CN107783297A (en) | 2017-11-22 | 2017-11-22 | Nearly eye display device |
Publications (1)
| Publication Number | Publication Date |
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| CN107783297A true CN107783297A (en) | 2018-03-09 |
Family
ID=61430949
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| CN201711172616.7A Pending CN107783297A (en) | 2017-11-22 | 2017-11-22 | Nearly eye display device |
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