CN108398791A - A kind of nearly eye display device based on polarisation contact lenses - Google Patents
A kind of nearly eye display device based on polarisation contact lenses Download PDFInfo
- Publication number
- CN108398791A CN108398791A CN201810273462.9A CN201810273462A CN108398791A CN 108398791 A CN108398791 A CN 108398791A CN 201810273462 A CN201810273462 A CN 201810273462A CN 108398791 A CN108398791 A CN 108398791A
- Authority
- CN
- China
- Prior art keywords
- light
- polarisation
- contact lenses
- display device
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000010287 polarization Effects 0.000 claims abstract description 122
- 230000004438 eyesight Effects 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 210000001747 pupil Anatomy 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims description 30
- 239000004973 liquid crystal related substance Substances 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 21
- 239000002096 quantum dot Substances 0.000 claims description 13
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 claims description 12
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 208000001491 myopia Diseases 0.000 description 4
- 230000004379 myopia Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000003190 augmentative effect Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004270 retinal projection Effects 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
Classifications
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
- 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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
- G02B2027/0125—Field-of-view increase by wavefront division
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0129—Head-up displays characterised by optical features comprising devices for correcting parallax
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The nearly eye display device based on polarisation contact lenses that the invention discloses a kind of comprising：Micro-projector, for projecting image；Waveguide surface or internal has at least two diffraction grating or reflecting layer for being coupled into of light, decoupling and exit pupil expansion for folding light path；Polaroid only allows the light of particular polarization to pass through for filtering light；Polarization rotator, for changing the polarization direction of light；Polarisation contact lenses only allow the light of particular polarization to pass through for light filtering and vision correction, and diopter depends on the eyesight of wearer；The nearly eye display device can also be Binocular displays either monocular is shown.The nearly eye display device can realize the field angle of super large, dummy object to real-world object block and vision correction function, suitable for wearing display equipment and intelligent wearable device, such as intelligent glasses etc..
Description
Technical field
The present invention relates to wearable display technology fields more particularly to a kind of nearly eye based on polarisation contact lenses to show dress
It sets.
Background technology
Augmented reality (Augmented Reality, abbreviation AR), be defined for realizing generated by computer it is virtual
The world with real world merge is referred to as with the technology interacted.Optical perspective（See-Through）The nearly eye of type shows (Near-
Eye Display, abbreviation NED) ----also known as wear-type shows that ----is the key that one of augmented reality composition technology, common
Technical solution mainly have beam splitter, slab guide, freeform optics, retinal projection etc..However it is existing towards enhancing at present
It is difficult that the real nearly eye display device of optical perspective type --- using intelligent glasses as representative ----still faces some technologies urgently to be resolved hurrily
Topic.For example, first, field angle（Fieldof View, abbreviation FOV）It is too small, usually between 15 to 50 degree.With human eye itself
FOV is compared, and there is also sizable gaps.The second, mutual occlusion（Occlusion）, you can dummy object is complete or partial
Shelter from real-world object.Nearly eye display device is outdoors in use, often due to the light intensity of external ambient light is far above micro- projection
The light intensity of instrument to cause the dummy object shape that is translucent to be covered in real-world object, or even can not be seen clearly.Third, vision correction.
For the user with visual impairment, existing solution is the additional glasses for increasing by a pair and being used for vision correction.This point
Erecting meter not only can make human eye far from emergent pupil area, and FOV is caused to lose, and thick and heavy hardware is whole also by extreme influence user
Experience.
In view of the above-mentioned problems, the present invention proposes a kind of nearly eye display device based on polarisation contact lenses, it can be achieved that super
Big field angle, dummy object to real-world object block and vision correction.Therefore, which can significantly improve display effect
Fruit, to which user experience be substantially improved.
Invention content
The technical solution adopted in the present invention is a kind of nearly eye display device based on polarisation contact lenses, composition packet
It includes：
Micro-projector：For projecting image；
Waveguide：For folding light path, surface or it is internal have at least two diffraction grating or reflecting layer for being coupled into of light,
Decoupling and exit pupil expansion；
Polaroid：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator：For changing the polarization direction of light；
Polarisation contact lenses：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, diopter
Eyesight depending on wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
As a kind of improvement to technical solution of the present invention, the micro-projector can be scan-type projecting apparatus or non-
Scan-type projecting apparatus.
As a kind of improvement to technical solution of the present invention, the micro-projector include micro display screen, projection lens,
One or more of light source, beam splitter, polaroid, diaphragm, mems mirror component.
As a kind of improvement to technical solution of the present invention, the light source in the component of the micro-projector can be hair
Optical diode（LED）, Organic Light Emitting Diode（OLED）, light emitting diode with quantum dots（QLED）Or laser.
As a kind of improvement to technical solution of the present invention, the micro display screen in the component of the micro-projector
It can be liquid crystal display（LCD）, liquid crystal on silicon（LCoS）Display screen, Organic Light Emitting Diode（OLED）Display screen, miniature hair
Optical diode (Micro LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror（DMD）Display
Screen.
As a kind of improvement to technical solution of the present invention, the projection lens in the component of the micro-projector
It can be tight shot, or zoom lens.
As a kind of improvement to technical solution of the present invention, the waveguide can be slab guide, or from
By curved surface waveguide.
As a kind of improvement to technical solution of the present invention, the diffraction grating in the waveguide can be holographic optical
Grid, balzed grating, oblique raster, polarization grating, liquid crystal grating, holographic optical element or diffractive optical element.
As a kind of improvement to technical solution of the present invention, the reflecting layer in the waveguide can be total reflection
Layer or partially reflecting layer.
As a kind of improvement to technical solution of the present invention, the polarization rotator can be twisted nematic liquid crystal
（TN-LC）Panel, blue phase liquid crystal（BPLC）Panel or ferroelectric liquid crystals（FLC）Panel.
As a kind of improvement to technical solution of the present invention, the polarisation contact lenses can be single focus lens,
May be multifocal lens.
As a kind of improvement to technical solution of the present invention, the polarisation contact lenses, which can be single layer, has dioptric
The polaroid of degree, or the bilayer combination of the polaroid of no diopter and the flexible lens for having diopter.
Nearly eye display device proposed by the present invention based on polarisation contact lenses, it can be achieved that super large field angle, virtual object
Body to real-world object block and vision correction.Therefore, which can significantly improve display effect, to which use be substantially improved
It experiences at family.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is that the structure of the nearly eye display device based on polarisation contact lenses of the first embodiment of the present invention and principle are illustrated
Figure；
Fig. 2 is that the structure of the nearly eye display device based on polarisation contact lenses of the second embodiment of the present invention and principle are illustrated
Figure；
Fig. 3 is that the structure of the nearly eye display device based on polarisation contact lenses of the third embodiment of the present invention and principle are illustrated
Figure；
Fig. 4 is that the structure of the nearly eye display device based on polarisation contact lenses of the fourth embodiment of the present invention and principle are illustrated
Figure.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, with reference to the accompanying drawings and embodiments, to this
Invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, and does not have to
It is of the invention in limiting.
【First embodiment】
Referring to Fig.1, the nearly eye display device based on polarisation contact lenses shown in the present embodiment includes：
Micro-projector 101：For projecting image；
Waveguide 102：For folding light path, surface or the internal coupling that there is at least two diffraction grating or reflecting layer for light
Enter, decoupling and exit pupil expansion；
Polaroid 103：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator 104：For changing the polarization direction of light；
Polarisation contact lenses 105：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, bent
Luminosity depends on the eyesight of wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
Preferably, the micro-projector 101 in the present embodiment includes micro display screen, projection lens, light source, beam splitter, polarisation
One or more of piece, diaphragm, mems mirror component（It is not shown in figure）.Micro-projector 101 can be that scan-type is thrown
Shadow instrument, or non-scanning type projecting apparatus.Light source in the component of micro-projector 101 can be light emitting diode（LED）, have
Machine light emitting diode（OLED）, light emitting diode with quantum dots（QLED）Or laser.Micro display screen in the component of micro-projector 101
It can be liquid crystal display（LCD）, liquid crystal on silicon（LCoS）Display screen, Organic Light Emitting Diode（OLED）Display screen, miniature hair
Optical diode (Micro LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror（DMD）Display
Screen.Projection lens in the component of micro-projector 101 can be tight shot, or zoom lens.Waveguide 102 can be
Slab guide, or free form surface waveguide.Two diffraction grating 102a and 102b of 102 surface of waveguide can distinguish
For holographic grating, balzed grating, oblique raster, polarization grating, liquid crystal grating, holographic optical element or diffractive optical element.Polarization rotation
It can be twisted nematic liquid crystal to turn device 104（TN-LC）Panel, blue phase liquid crystal（BPLC）Panel or ferroelectric liquid crystals（FLC）Panel.
Polarisation contact lenses 105 can be single focus lens, or multifocal lens.Polarisation contact lenses 105 have for single layer
The polaroid of diopter.
The specific workflow of the present embodiment is described as follows：
When watching real scene, micro-projector 101 and polarization rotator 104 need to be simultaneously closed off.At this point, the object in real scene
The non-polarized light sent out becomes polarised light, and light intensity decreasing after polaroid 103.Hereafter, which passes through waveguide successively
102, polarization rotator 104.In the closed state, when not applying voltage to it, polarization rotator 104 can be by the polarization of light
Direction is rotated by 90 °.When light reaches polarisation contact lenses 105, due to polarization direction and the polarisation stealth eye of polaroid 103
The polarization direction of mirror 105 is orthogonal, and light can pass through polarisation contact lenses 105, and finally enters human eye 11.In the work
Under operation mode, user can only see real scene.
When watching virtual scene, micro-projector 101 and polarization rotator 104 need to be opened simultaneously.Micro-projector 101 projects
Carry the light of virtual image information.Light is coupled into waveguide 102 via diffraction grating 102a.As long as meeting total reflection condition, light
After line can carry out multiple total reflection propagation inside waveguide, diffraction grating 102b is reached.Diffraction grating 102b can be by light decoupling
Waveguide, and realize exit pupil expansion.Polarization rotator 104 will be encountered by leaving the light after waveguide.In the on state, i.e., it is applied
When making alive, polarization rotator 104 will not change the polarization direction of light.The light sent out such as micro-projector 101 is unpolarized
Light, then polarization rotator 104 cut little ice, i.e., emergent light still be non-polarized light.The non-polarized light of outgoing is hidden by polarisation
After the polarization filtering of shape glasses 105, human eye 11 can be entered and be imaged.Light as micro-projector 101 is sent out is polarised light, then requires
The polarization direction of the polarised light is consistent with the polarization direction of polarisation contact lenses 105, therefore emergent ray can pass through polarisation
Contact lenses 105 are imaged hence into human eye 11.If wearer is with visual problems, such as myopia, long sight, astigmatism etc., then partially
Light contact lenses 105 will have corresponding diopter to realize vision correction.On the other hand, the non-polarized light from real scene
After the filtering of the polarization of polaroid 103, waveguide 102 and polarization rotator 104 will be passed sequentially through.Due to being revolved at this time by polarizing
The polarization direction and the polarization direction of polarisation contact lenses 105 for turning the light of the outgoing of device 104 are mutually perpendicular to, thus will be hidden by polarisation
Shape glasses 105 stop completely.Therefore in this operating mode, user can only see virtual scene, and can not see real scene.
In conclusion the technical solution of the present embodiment has used waveguide as the medium of paths and folding, surface
Diffraction grating prepared by top can realize being coupled into of light, decoupling and exit pupil expansion.And since polarisation contact lenses are close to people
Eye not only has vision correction function, also can get the field angle of super large.Most of all, controlling light by polarization rotator
The polarization direction of line realizes virtual scene and is blocked to real scene.For outdoor application, it ensure that the device in the strong ring of light
In use, wearer can see the virtual scene of limited brightness clearly in border.Further, since polaroid and polarisation contact lenses all have
Filtering function is polarized, which can be used for ultraviolet light and dazzle.Except above-mentioned related optical function, if hidden in polarisation
The non-thang-kng region of shape glasses prepares pattern, moreover it is possible to have both U.S. pupil effect.
【Second embodiment】
With reference to Fig. 2, the nearly eye display device based on polarisation contact lenses includes shown in the present embodiment：
Micro-projector 201：For projecting image；
Waveguide 202：For folding light path, surface or the internal coupling that there is at least two diffraction grating or reflecting layer for light
Enter, decoupling and exit pupil expansion；
Polaroid 203：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator 204：For changing the polarization direction of light；
Polarisation contact lenses 205：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, bent
Luminosity depends on the eyesight of wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
Preferably, the micro-projector 201 in the present embodiment includes micro display screen, projection lens, light source, beam splitter, polarisation
One or more of piece, diaphragm, mems mirror component（It is not shown in figure）.Micro-projector 201 can be that scan-type is thrown
Shadow instrument, or non-scanning type projecting apparatus.Light source in the component of micro-projector 201 can be light emitting diode（LED）, have
Machine light emitting diode（OLED）, light emitting diode with quantum dots（QLED）Or laser.Micro display screen in the component of micro-projector 201
It can be liquid crystal display（LCD）, liquid crystal on silicon（LCoS）Display screen, Organic Light Emitting Diode（OLED）Display screen, miniature hair
Optical diode (Micro LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror（DMD）Display
Screen.Projection lens in the component of micro-projector 201 can be tight shot, or zoom lens.Waveguide 202 can be
Slab guide, or free form surface waveguide.Two diffraction grating 202a and 202b of 202 surface of waveguide can distinguish
For holographic grating, balzed grating, oblique raster, polarization grating, liquid crystal grating, holographic optical element or diffractive optical element.Polarization rotation
It can be twisted nematic liquid crystal to turn device 204（TN-LC）Panel, blue phase liquid crystal（BPLC）Panel or ferroelectric liquid crystals（FLC）Panel.
Polarisation contact lenses 205 can be single focus lens, or multifocal lens.Polarisation contact lenses 205 are no diopter
Polaroid 205a and have diopter flexible lens 205b bilayer combination.
The specific workflow of the present embodiment is described as follows：
When watching real scene, micro-projector 201 and polarization rotator 204 need to be simultaneously closed off.At this point, the object in real scene
The non-polarized light sent out becomes polarised light, and light intensity decreasing after polaroid 203.Hereafter, which passes through waveguide successively
202, polarization rotator 204.In the closed state, when not applying voltage to it, polarization rotator 204 can be by the polarization of light
Direction is rotated by 90 °.When light reaches polarisation contact lenses 205, due to polarization direction and the polarisation stealth eye of polaroid 203
The polarization direction of polaroid 205a in mirror 205 is orthogonal, and light can pass through polarisation contact lenses 205, and most laggard
Enter human eye 11.In this operating mode, user can only see real scene.
When watching virtual scene, micro-projector 201 and polarization rotator 204 need to be opened simultaneously.Micro-projector 201 projects
Carry the light of virtual image information.Light is coupled into waveguide 202 via diffraction grating 202a.As long as meeting total reflection condition, light
After line can carry out multiple total reflection propagation inside waveguide, diffraction grating 202b is reached.Diffraction grating 202b can be by light decoupling
Waveguide, and realize exit pupil expansion.Polarization rotator 204 will be encountered by leaving the light after waveguide.In the on state, i.e., it is applied
When making alive, polarization rotator 204 will not change the polarization direction of light.The light sent out such as micro-projector 201 is unpolarized
Light, then polarization rotator 204 cut little ice, i.e., emergent light still be non-polarized light.The non-polarized light of outgoing is hidden by polarisation
After the polarization filtering of shape glasses 205, human eye 11 can be entered and be imaged.Light as micro-projector 201 is sent out is polarised light, then requires
The polarization direction of the polarised light is consistent with the polarization direction of polaroid 205a in polarisation contact lenses 205, therefore emergent ray
Polarisation contact lenses 205 can be passed through, are imaged hence into human eye 11.As wearer suffers from visual problems, for example, it is myopia, remote
Depending on, astigmatism etc., then the flexible lens 205b in polarisation contact lenses 205 will have corresponding diopter to realize vision correction.
On the other hand, the non-polarized light from real scene will pass sequentially through 202 He of waveguide after the filtering of the polarization of polaroid 203
Polarization rotator 204.Due to the polarization direction of light being emitted at this time by polarization rotator 204 and polarisation contact lenses 205
In the polarization direction of polaroid 205a be mutually perpendicular to, thus will completely be stopped by polarisation contact lenses 205.Therefore in the work
Under pattern, user can only see virtual scene, and can not see real scene.
In conclusion the technical solution of the present embodiment has used waveguide as the medium of paths and folding, surface
Diffraction grating prepared by top can realize being coupled into of light, decoupling and exit pupil expansion.And since polarisation contact lenses are close to people
Eye not only has vision correction function, also can get the field angle of super large.Most of all, controlling light by polarization rotator
The polarization direction of line realizes virtual scene and is blocked to real scene.For outdoor application, it ensure that the device in the strong ring of light
In use, wearer can see the virtual scene of limited brightness clearly in border.Further, since polaroid and polarisation contact lenses all have
Filtering function is polarized, which can be used for ultraviolet light and dazzle.Except above-mentioned related optical function, if hidden in polarisation
The non-thang-kng region of shape glasses prepares pattern, moreover it is possible to have both U.S. pupil effect.
【3rd embodiment】
With reference to Fig. 3, the nearly eye display device based on polarisation contact lenses includes shown in the present embodiment：
Micro-projector 301：For projecting image；
Waveguide 302：For folding light path, surface or the internal coupling that there is at least two diffraction grating or reflecting layer for light
Enter, decoupling and exit pupil expansion；
Polaroid 303：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator 304：For changing the polarization direction of light；
Polarisation contact lenses 305：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, bent
Luminosity depends on the eyesight of wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
Preferably, the micro-projector 301 in the present embodiment includes micro display screen, projection lens, light source, beam splitter, polarisation
One or more of piece, diaphragm, mems mirror component（It is not shown in figure）.Micro-projector 301 can be that scan-type is thrown
Shadow instrument, or non-scanning type projecting apparatus.Light source in the component of micro-projector 301 can be light emitting diode（LED）, have
Machine light emitting diode（OLED）, light emitting diode with quantum dots（QLED）Or laser.Micro display screen in the component of micro-projector 301
It can be liquid crystal display（LCD）, liquid crystal on silicon（LCoS）Display screen, Organic Light Emitting Diode（OLED）Display screen, miniature hair
Optical diode (Micro LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror（DMD）Display
Screen.Projection lens in the component of micro-projector 301 can be tight shot, or zoom lens.Waveguide 302 can be
Slab guide, or free form surface waveguide.Reflecting layer 302a, 302b, 302c, 302d, 302e inside waveguide 302 and
302f can be respectively total reflection layer or partially reflecting layer.Above-mentioned six reflecting layer are only used for for example, people in the art
Member is it should be appreciated that the quantity in reflecting layer is not restricted by.Polarization rotator 304 can be twisted nematic liquid crystal（TN-LC）Face
Plate, blue phase liquid crystal（BPLC）Panel or ferroelectric liquid crystals（FLC）Panel.Polarisation contact lenses 305 can be single focus lens, also may be used
Think multifocal lens.Polarisation contact lenses 305 are the polaroid that single layer has diopter.
The specific workflow of the present embodiment is described as follows：
When watching real scene, micro-projector 301 and polarization rotator 304 need to be simultaneously closed off.At this point, the object in real scene
The non-polarized light sent out becomes polarised light, and light intensity decreasing after polaroid 303.Hereafter, which passes through waveguide successively
302, polarization rotator 304.In the closed state, when not applying voltage to it, polarization rotator 304 can be by the polarization of light
Direction is rotated by 90 °.When light reaches polarisation contact lenses 305, due to polarization direction and the polarisation stealth eye of polaroid 303
The polarization direction of mirror 305 is orthogonal, and light can pass through polarisation contact lenses 305, and finally enters human eye 11.In the work
Under operation mode, user can only see real scene.
When watching virtual scene, micro-projector 301 and polarization rotator 304 need to be opened simultaneously.Micro-projector 301 projects
Carry the light of virtual image information.Light is coupled into waveguide 302 via reflecting layer 302a.As long as meeting total reflection condition, light
After can carrying out multiple total reflection propagation inside waveguide, reflecting layer 302b, 302c, 302d, 302e and 302f are successively reached.Five
Reflecting layer 302b, 302c, 302d, 302e and 302f can be by light decoupling waveguides, and realize exit pupil expansion.Leave the light after waveguide
Line will encounter polarization rotator 304.In the on state, i.e., when applying voltage to it, polarization rotator 304 will not change light
Polarization direction.The light sent out such as micro-projector 301 is non-polarized light, then polarization rotator 304 cuts little ice, that is, goes out
It is non-polarized light to penetrate light still.The non-polarized light of outgoing by polarisation contact lenses 305 polarization filtering after, can enter human eye 11 at
Picture.Light as micro-projector 301 is sent out is polarised light, then requires polarization direction and the polarisation contact lenses 305 of the polarised light
Polarization direction it is consistent, therefore emergent ray can pass through polarisation contact lenses 305, be imaged hence into human eye 11.As worn
Wearer will have corresponding diopter with reality with visual problems, such as myopia, long sight, astigmatism etc., then polarisation contact lenses 305
Existing vision correction.On the other hand, the non-polarized light from real scene will lead to successively after the filtering of the polarization of polaroid 303
Cross waveguide 302 and polarization rotator 304.Due to the polarization direction of light being emitted at this time by polarization rotator 304 and polarisation
The polarization direction of contact lenses 305 is mutually perpendicular to, thus will completely be stopped by polarisation contact lenses 305.Therefore in the Working mould
Under formula, user can only see virtual scene, and can not see real scene.
In conclusion the technical solution of the present embodiment has used waveguide as the medium of paths and folding, inside
The reflecting layer of preparation can realize being coupled into of light, decoupling and exit pupil expansion.And since polarisation contact lenses are close to human eye, not only
Have vision correction function, also can get the field angle of super large.Most of all, controlling the polarization of light by polarization rotator
Direction realizes virtual scene and is blocked to real scene.For outdoor application, it ensure that the device uses in strong light environment
When, wearer can see the virtual scene of limited brightness clearly.Further, since polaroid and polarisation contact lenses all have polarization filtering
Function, the device can be used for ultraviolet light and dazzle.Except above-mentioned related optical function, if in polarisation contact lenses
Non- thang-kng region prepares pattern, moreover it is possible to have both U.S. pupil effect.
【Fourth embodiment】
With reference to Fig. 4, the nearly eye display device based on polarisation contact lenses includes shown in the present embodiment：
Micro-projector 401：For projecting image；
Waveguide 402：For folding light path, surface or the internal coupling that there is at least two diffraction grating or reflecting layer for light
Enter, decoupling and exit pupil expansion；
Polaroid 403：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator 404：For changing the polarization direction of light；
Polarisation contact lenses 405：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, bent
Luminosity depends on the eyesight of wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
Preferably, the micro-projector 401 in the present embodiment includes micro display screen, projection lens, light source, beam splitter, polarisation
One or more of piece, diaphragm, mems mirror component（It is not shown in figure）.Micro-projector 401 can be that scan-type is thrown
Shadow instrument, or non-scanning type projecting apparatus.Light source in the component of micro-projector 401 can be light emitting diode（LED）, have
Machine light emitting diode（OLED）, light emitting diode with quantum dots（QLED）Or laser.Micro display screen in the component of micro-projector 401
It can be liquid crystal display（LCD）, liquid crystal on silicon（LCoS）Display screen, Organic Light Emitting Diode（OLED）Display screen, miniature hair
Optical diode (Micro LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror（DMD）Display
Screen.Projection lens in the component of micro-projector 401 can be tight shot, or zoom lens.Waveguide 402 can be
Slab guide, or free form surface waveguide.Reflecting layer 402a, 402b, 402c, 402d, 402e inside waveguide 402 and
402f can be respectively total reflection layer or partially reflecting layer.Above-mentioned six reflecting layer are only used for for example, people in the art
Member is it should be appreciated that the quantity in reflecting layer is not restricted by.Polarization rotator 404 can be twisted nematic liquid crystal（TN-LC）Face
Plate, blue phase liquid crystal（BPLC）Panel or ferroelectric liquid crystals（FLC）Panel.Polarisation contact lenses 405 can be single focus lens, also may be used
Think multifocal lens.Polarisation contact lenses 405 for no diopter polaroid 405a and have the flexible lens 405b of diopter
Bilayer combination.
The specific workflow of the present embodiment is described as follows：
When watching real scene, micro-projector 401 and polarization rotator 404 need to be simultaneously closed off.At this point, the object in real scene
The non-polarized light sent out becomes polarised light, and light intensity decreasing after polaroid 403.Hereafter, which passes through waveguide successively
402, polarization rotator 404.In the closed state, when not applying voltage to it, polarization rotator 404 can be by the polarization of light
Direction is rotated by 90 °.When light reaches polarisation contact lenses 405, due to polarization direction and the polarisation stealth eye of polaroid 403
The polarization direction of polaroid 405a is orthogonal in mirror 405, and light can pass through polarisation contact lenses 405, and finally enter
Human eye 11.In this operating mode, user can only see real scene.
When watching virtual scene, micro-projector 401 and polarization rotator 404 need to be opened simultaneously.Micro-projector 401 projects
Carry the light of virtual image information.Light is coupled into waveguide 402 via total reflection layer 402a.As long as meeting total reflection condition, light
After line can carry out multiple total reflection propagation inside waveguide, reflecting layer 402b, 402c, 402d, 402e and 402f are successively reached.Five
A reflecting layer 402b, 402c, 402d, 402e and 402f can be by light decoupling waveguides, and realize exit pupil expansion.After leaving waveguide
Light will encounter polarization rotator 404.In the on state, i.e., when applying voltage to it, polarization rotator 404 will not change light
The polarization direction of line.The light sent out such as micro-projector 401 is non-polarized light, then polarization rotator 404 cuts little ice, i.e.,
Emergent light is still non-polarized light.The non-polarized light of outgoing can enter human eye 11 after the filtering of the polarization of polarisation contact lenses 405
Imaging.Light as micro-projector 401 is sent out is polarised light, then requires polarization direction and the polarisation contact lenses of the polarised light
The polarization direction of polaroid 405a in 405 is consistent, therefore emergent ray can pass through polarisation contact lenses 405, thus into
Enter the imaging of human eye 11.If wearer is with visual problems, such as myopia, long sight, astigmatism etc., then in polarisation contact lenses 405
Flexible lens 405b will have corresponding diopter to realize vision correction.On the other hand, the non-polarized light from real scene
After the filtering of the polarization of polaroid 403, waveguide 402 and polarization rotator 404 will be passed sequentially through.Due to being revolved at this time by polarizing
The polarization direction and the polarization direction of the polaroid 405a in polarisation contact lenses 405 for turning the light of the outgoing of device 404 are mutually perpendicular to,
Thus will completely it be stopped by polarisation contact lenses 405.Therefore in this operating mode, user can only see virtual scene, and nothing
Method sees real scene.
In conclusion the technical solution of the present embodiment has used waveguide as the medium of paths and folding, inside
The reflecting layer of preparation can realize being coupled into of light, decoupling and exit pupil expansion.And since polarisation contact lenses are close to human eye, not only
Have vision correction function, also can get the field angle of super large.Most of all, controlling the polarization of light by polarization rotator
Direction realizes virtual scene and is blocked to real scene.For outdoor application, it ensure that the device uses in strong light environment
When, wearer can see the virtual scene of limited brightness clearly.Further, since polaroid and polarisation contact lenses all have polarization filtering
Function, the device can be used for ultraviolet light and dazzle.Except above-mentioned related optical function, if in polarisation contact lenses
Non- thang-kng region prepares pattern, moreover it is possible to have both U.S. pupil effect.
Claims (12)
1. a kind of nearly eye display device based on polarisation contact lenses, composition include：
Micro-projector：For projecting image；
Waveguide：For folding light path, surface or it is internal have at least two diffraction grating or reflecting layer for being coupled into of light,
Decoupling and exit pupil expansion；
Polaroid：For filtering light, only the light of particular polarization is allowed to pass through；
Polarization rotator：For changing the polarization direction of light；
Polarisation contact lenses：For light filtering and vision correction, only the light of particular polarization is allowed to pass through, diopter
Eyesight depending on wearer；
The nearly eye display device can also be Binocular displays either monocular is shown.
2. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：It is described micro-
Projecting apparatus can be scan-type projecting apparatus, or non-scanning type projecting apparatus.
3. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：It is described micro-
Projecting apparatus includes one kind or several in micro display screen, projection lens, light source, beam splitter, polaroid, diaphragm, mems mirror
Kind component.
4. a kind of nearly eye display device based on polarisation contact lenses according to claim 3, it is characterised in that：It is described micro-
Light source in the component of projecting apparatus can be light emitting diode（Light-Emitting Diode, abbreviation LED）, organic light emission two
Pole pipe（Organic Light-Emitting Diode, abbreviation OLED）, light emitting diode with quantum dots（Quantum Dot
Light-Emitting Diode, abbreviation QLED）Or laser.
5. a kind of nearly eye display device based on polarisation contact lenses according to claim 3, it is characterised in that：It is described micro-
The micro display screen in the component of projecting apparatus can be liquid crystal display（LiquidCrystalDisplay, abbreviation LCD）, silicon
Base fluid is brilliant（LiquidCrystalonSilicon, abbreviation LCoS）Display screen, Organic Light Emitting Diode（OLED）It is display screen, miniature
Light emitting diode (Micro-LED) display screen, light emitting diode with quantum dots（QLED）Display screen or digital micro-mirror
（DigitalMicromirrorDevice, abbreviation DMD）Display screen.
6. a kind of nearly eye display device based on polarisation contact lenses according to claim 3, it is characterised in that：It is described micro-
The projection lens in the component of projecting apparatus can be tight shot, or zoom lens.
7. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：The wave
It can be slab guide to lead, or free form surface waveguide.
8. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：The wave
Diffraction grating in leading can be holographic grating, balzed grating, oblique raster, polarization grating, liquid crystal grating, holographic optical element or
Diffractive optical element.
9. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：The wave
The reflecting layer in leading can be total reflection layer or partially reflecting layer.
10. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：It is described
Polarization rotator can be twisted nematic liquid crystal（Twisted Nematic Liquid Crystal, abbreviation TN-LC）Panel,
Blue phase liquid crystal（Blue Phase LC, abbreviation BPLC）Panel or ferroelectric liquid crystals（Ferroelectric LC, abbreviation FLC）Panel.
11. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：It is described
Polarisation contact lenses can be single focus lens, or multifocal lens.
12. a kind of nearly eye display device based on polarisation contact lenses according to claim 1, it is characterised in that：It is described
Polarisation contact lenses can be the polaroid that single layer has diopter, or the polaroid of no diopter and have diopter
The bilayer combination of flexible lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810273462.9A CN108398791B (en) | 2018-03-29 | 2018-03-29 | Near-to-eye display device based on polarized contact lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810273462.9A CN108398791B (en) | 2018-03-29 | 2018-03-29 | Near-to-eye display device based on polarized contact lenses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108398791A true CN108398791A (en) | 2018-08-14 |
| CN108398791B CN108398791B (en) | 2022-11-25 |
Family
ID=63099132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810273462.9A Active CN108398791B (en) | 2018-03-29 | 2018-03-29 | Near-to-eye display device based on polarized contact lenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108398791B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031678A (en) * | 2018-08-20 | 2018-12-18 | 京东方科技集团股份有限公司 | Display device and method for controlling the display device |
| CN109557695A (en) * | 2019-01-17 | 2019-04-02 | 成都晶砂科技有限公司 | A kind of device, display device and brightness adjusting method adjusting display light source brightness |
| CN110824613A (en) * | 2019-11-13 | 2020-02-21 | 东南大学 | Polarization multiplexing waveguide display device |
| CN110989172A (en) * | 2019-12-24 | 2020-04-10 | 平行现实（杭州）科技有限公司 | Waveguide display device with ultra-large field angle |
| CN111123519A (en) * | 2020-01-09 | 2020-05-08 | 深圳珑璟光电技术有限公司 | Near-to-eye display system and device with transparency capable of being manually adjusted |
| CN111175975A (en) * | 2020-01-16 | 2020-05-19 | 华东交通大学 | Near-to-eye display device for realizing large focal depth imaging |
| CN111399221A (en) * | 2019-01-02 | 2020-07-10 | 宏达国际电子股份有限公司 | Waveguide device and optical engine |
| CN112444970A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Large-view-field AR waveguide |
| US11460703B2 (en) | 2019-09-09 | 2022-10-04 | Mega1 Company Ltd. | Laser optical projection module and wearable device having the same |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020024743A1 (en) * | 2000-06-13 | 2002-02-28 | Takeshi Endo | Eyepiece optical system |
| CN103718083A (en) * | 2011-08-02 | 2014-04-09 | 谷歌公司 | Method and apparatus for a near-to-eye display |
| CN203673146U (en) * | 2014-01-02 | 2014-06-25 | 杭州科汀光学技术有限公司 | Optical system used for wearable display |
| CN103946732A (en) * | 2011-09-26 | 2014-07-23 | 微软公司 | Video display modification based on sensor input for a see-through near-to-eye display |
| CN104145208A (en) * | 2012-03-15 | 2014-11-12 | 谷歌公司 | Near-to-eye display with diffractive lens |
| CN105572877A (en) * | 2016-02-03 | 2016-05-11 | 陈超平 | Head-mounted type augmented reality intelligent display device |
| CN105676455A (en) * | 2016-02-01 | 2016-06-15 | 深圳超多维光电子有限公司 | Head-wearing display equipment |
| CN105934902A (en) * | 2013-11-27 | 2016-09-07 | 奇跃公司 | Virtual and augmented reality systems and methods |
| CN105929545A (en) * | 2016-06-20 | 2016-09-07 | 东莞市长资实业有限公司 | Waveguide type head-mounted display optical device |
| CN106471417A (en) * | 2014-06-13 | 2017-03-01 | 三菱电机株式会社 | Virtual image display apparatus |
| US20170184848A1 (en) * | 2015-12-29 | 2017-06-29 | Tuomas Vallius | Augmented reality display system with variable focus |
| CN106908953A (en) * | 2017-03-28 | 2017-06-30 | 陈超平 | A kind of binocular near-eye display device of integrated vision correction |
| CN107272210A (en) * | 2017-08-14 | 2017-10-20 | 上海理湃光晶技术有限公司 | A kind of waveguide that can improve visual experience shows structure |
| CN107329256A (en) * | 2016-04-28 | 2017-11-07 | 江苏慧光电子科技有限公司 | Display device and its control method |
-
2018
- 2018-03-29 CN CN201810273462.9A patent/CN108398791B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020024743A1 (en) * | 2000-06-13 | 2002-02-28 | Takeshi Endo | Eyepiece optical system |
| CN103718083A (en) * | 2011-08-02 | 2014-04-09 | 谷歌公司 | Method and apparatus for a near-to-eye display |
| CN103946732A (en) * | 2011-09-26 | 2014-07-23 | 微软公司 | Video display modification based on sensor input for a see-through near-to-eye display |
| CN104145208A (en) * | 2012-03-15 | 2014-11-12 | 谷歌公司 | Near-to-eye display with diffractive lens |
| CN105934902A (en) * | 2013-11-27 | 2016-09-07 | 奇跃公司 | Virtual and augmented reality systems and methods |
| CN203673146U (en) * | 2014-01-02 | 2014-06-25 | 杭州科汀光学技术有限公司 | Optical system used for wearable display |
| CN106471417A (en) * | 2014-06-13 | 2017-03-01 | 三菱电机株式会社 | Virtual image display apparatus |
| US20170184848A1 (en) * | 2015-12-29 | 2017-06-29 | Tuomas Vallius | Augmented reality display system with variable focus |
| CN105676455A (en) * | 2016-02-01 | 2016-06-15 | 深圳超多维光电子有限公司 | Head-wearing display equipment |
| CN105572877A (en) * | 2016-02-03 | 2016-05-11 | 陈超平 | Head-mounted type augmented reality intelligent display device |
| CN107329256A (en) * | 2016-04-28 | 2017-11-07 | 江苏慧光电子科技有限公司 | Display device and its control method |
| CN105929545A (en) * | 2016-06-20 | 2016-09-07 | 东莞市长资实业有限公司 | Waveguide type head-mounted display optical device |
| CN106908953A (en) * | 2017-03-28 | 2017-06-30 | 陈超平 | A kind of binocular near-eye display device of integrated vision correction |
| CN107272210A (en) * | 2017-08-14 | 2017-10-20 | 上海理湃光晶技术有限公司 | A kind of waveguide that can improve visual experience shows structure |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11740535B2 (en) | 2018-08-20 | 2023-08-29 | Boe Technology Group Co., Ltd. | Display apparatus and controlling method thereof |
| WO2020037941A1 (en) * | 2018-08-20 | 2020-02-27 | Boe Technology Group Co., Ltd. | Display apparatus and controlling method thereof |
| CN109031678A (en) * | 2018-08-20 | 2018-12-18 | 京东方科技集团股份有限公司 | Display device and method for controlling the display device |
| CN111399221A (en) * | 2019-01-02 | 2020-07-10 | 宏达国际电子股份有限公司 | Waveguide device and optical engine |
| US11002906B2 (en) | 2019-01-02 | 2021-05-11 | Htc Corporation | Waveguide device and optical engine |
| TWI724732B (en) * | 2019-01-02 | 2021-04-11 | 宏達國際電子股份有限公司 | Waveguide device and optical engine |
| CN109557695A (en) * | 2019-01-17 | 2019-04-02 | 成都晶砂科技有限公司 | A kind of device, display device and brightness adjusting method adjusting display light source brightness |
| CN112444970B (en) * | 2019-08-30 | 2022-10-18 | 成都理想境界科技有限公司 | Large-view-field AR waveguide |
| CN112444970A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Large-view-field AR waveguide |
| US11460703B2 (en) | 2019-09-09 | 2022-10-04 | Mega1 Company Ltd. | Laser optical projection module and wearable device having the same |
| TWI782314B (en) * | 2019-09-09 | 2022-11-01 | 英錡科技股份有限公司 | Laser optical projection module and wearable device having the same |
| CN110824613A (en) * | 2019-11-13 | 2020-02-21 | 东南大学 | Polarization multiplexing waveguide display device |
| CN110989172A (en) * | 2019-12-24 | 2020-04-10 | 平行现实（杭州）科技有限公司 | Waveguide display device with ultra-large field angle |
| CN111123519A (en) * | 2020-01-09 | 2020-05-08 | 深圳珑璟光电技术有限公司 | Near-to-eye display system and device with transparency capable of being manually adjusted |
| CN111123519B (en) * | 2020-01-09 | 2024-03-26 | 深圳珑璟光电技术有限公司 | Near-to-eye display system and device with manually adjustable transparency |
| CN111175975A (en) * | 2020-01-16 | 2020-05-19 | 华东交通大学 | Near-to-eye display device for realizing large focal depth imaging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108398791B (en) | 2022-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108398791A (en) | A kind of nearly eye display device based on polarisation contact lenses | |
| KR101614956B1 (en) | Head-mounted single-panel stereoscopic display | |
| CN111587393B (en) | Method and system for compact display for occlusion functionality | |
| US7639208B1 (en) | Compact optical see-through head-mounted display with occlusion support | |
| US9658454B2 (en) | Eyewear display system providing vision enhancement | |
| US7589902B2 (en) | Method of combining images in a wearable display system | |
| US7764431B2 (en) | Multiple imaging arrangements for head mounted displays | |
| US6847489B1 (en) | Head-mounted display and optical engine thereof | |
| CN110300905B (en) | Method and system for display device with integrated polarizer | |
| US10353213B2 (en) | See-through display glasses for viewing 3D multimedia | |
| KR101672707B1 (en) | Optical system for head mounted display | |
| CN112654902A (en) | Head Mounted Display (HMD) with spatially varying phase shifter optics | |
| KR20180125377A (en) | Imaging apparatus | |
| Rolland et al. | The past, present, and future of head-mounted display designs | |
| WO2019134384A1 (en) | Augmented reality glasses | |
| CN108267859B (en) | Display equipment for displaying 3D multimedia | |
| KR20170017854A (en) | Optical system for head mounted display | |
| CN116088184A (en) | Optical structure for real scene occlusion, AR device and working method | |
| KR100873409B1 (en) | Multiple imaging arrangements for head mounted displays | |
| CN111552080A (en) | Optical path and AR glasses | |
| TWI262339B (en) | Multiple imaging arrangements for head mounted displays | |
| WO2018212479A1 (en) | Imaging device | |
| US20180364493A1 (en) | Display apparatus and method of displaying using polarizers | |
| WO2022111668A1 (en) | Virtual-reality fusion display device | |
| RU2331910C2 (en) | Multiple image formation system for head displays |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |