NZ755617B2 - Method and system for display device with integrated polarizer - Google Patents
Method and system for display device with integrated polarizer Download PDFInfo
- Publication number
- NZ755617B2 NZ755617B2 NZ755617A NZ75561718A NZ755617B2 NZ 755617 B2 NZ755617 B2 NZ 755617B2 NZ 755617 A NZ755617 A NZ 755617A NZ 75561718 A NZ75561718 A NZ 75561718A NZ 755617 B2 NZ755617 B2 NZ 755617B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- eyepiece
- polarizer
- eyepiece unit
- polarization
- unit
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract 12
- 239000002537 cosmetic Substances 0.000 claims abstract 7
- 210000001747 pupil Anatomy 0.000 claims abstract 6
- 230000008878 coupling Effects 0.000 claims abstract 5
- 238000010168 coupling process Methods 0.000 claims abstract 5
- 238000005859 coupling reaction Methods 0.000 claims abstract 5
- 230000010287 polarization Effects 0.000 claims 11
- 239000004973 liquid crystal related substance Substances 0.000 claims 2
- 230000035945 sensitivity Effects 0.000 claims 2
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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
- G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects
-
- 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
- G02B27/017—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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133548—Wire-grid polarisers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3167—Modulator illumination systems for polarizing the light beam
Abstract
Disclosed is an eyepiece unit for projecting an image to an eye of a viewer. The eyepiece unit comprising an eyepiece having a world side and a viewer side opposite the world side. The eyepiece comprises an input coupling diffractive optical element, an orthogonal pupil expander diffractive optical element, and an exit pupil expander diffractive optical element. A curved cosmetic lens is disposed adjacent the world side of the eyepiece, and a polarizer is disposed adjacent the world side of the eyepiece.
Claims (19)
1. An eyepiece unit for projecting an image to an eye of a viewer, the eyepiece unit comprising: 5 an eyepiece having a world side and a viewer side opposite the world side, wherein the eyepiece comprises: an input coupling diffractive optical element; an orthogonal pupil expander diffractive optical element; and an exit pupil expander diffractive optical element; 10 a curved cosmetic lens disposed adjacent the world side of the eyepiece; and a polarizer disposed adjacent the world side of the eyepiece.
2. The eyepiece unit of claim 1 wherein the polarizer comprises a wire grid polarizer including a wire grid.
3. The eyepiece unit of claim 2 wherein the wire grid polarizer is operable to 15 transmit light having a first polarization and reflect light having a second polarization orthogonal to the first polarization.
4. The eyepiece unit of claim 2 further comprising: a liquid crystal element disposed between the wire grid polarizer and the curved cosmetic lens; and 20 a dichroic polarizer disposed between the liquid crystal element and the curved cosmetic lens.
5. The eyepiece unit of claim 3 wherein the eyepiece is characterized by a polarization sensitivity for light at angles of incidence greater than 37 degrees.
6. The eyepiece unit of claim 5 wherein the polarization sensitivity is 25 characterized by a ratio of a coupling efficiency for light having the second polarization to a coupling efficiency for light having the first polarization of greater than one.
7. The eyepiece unit of claim 6 wherein the ratio is greater than 3:1.
8. The eyepiece unit of claim 7 wherein the ratio is greater than 20:1.
9. The eyepiece unit of claim 2 wherein the wire grid polarizer is laminated to the eyepiece.
10. The eyepiece unit of any one of claims 1 to 9 wherein the input coupling diffractive optical element comprises a grating, the orthogonal pupil expander diffractive 5 optical element comprises a grating, and the exit pupil expander diffractive optical element comprises a grating.
11. The eyepiece unit of any one of claims 1 to 10 wherein the polarizer comprises an absorptive polarizer.
12. The eyepiece unit of any one of claims 1 to 11 further comprising a waveplate 10 disposed between the eyepiece and the polarizer.
13. The eyepiece unit of claim 12 wherein the waveplate comprises a quarter waveplate at a visible wavelength at angles of incidence greater than 37 degrees.
14. The eyepiece unit of any one of claims 1 to 13 wherein the polarizer is disposed between the eyepiece and the curved cosmetic lens.
15.15. The eyepiece unit of any one of claims 1 to 14 wherein the curved cosmetic lens is characterized by an optical power.
16. The eyepiece unit of claim 2 wherein the eyepiece, the curved cosmetic lens, and the polarizer are positioned along an optical axis, and wherein the wire grid of the wire grid polarizer is oriented orthogonal to the optical axis. 20
17. The eyepiece unit of claim11 wherein the absorptive polarizer comprises a dichroic polarizer.
18. The eyepiece unit of claim 4 wherein the wire grid polarizer and the dichroic polarizer are operable to transmit light having a first polarization.
19. The eyepiece unit of claim 11 wherein the absorptive polarizer is operable to 25 transmit light having a first polarization and absorb light having a second polarization orthogonal to the first polarization.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762459984P | 2017-02-16 | 2017-02-16 | |
| PCT/US2018/018222 WO2018152233A1 (en) | 2017-02-16 | 2018-02-14 | Method and system for display device with integrated polarizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ755617A NZ755617A (en) | 2024-03-22 |
| NZ755617B2 true NZ755617B2 (en) | 2024-06-25 |
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