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公开(公告)号：WO2022040068A1
公开(公告)日：2022-02-24
申请号：PCT/US2021/046093
申请日：2021-08-16
发明人： AMIRSOLAIMANI, Babak , KOSHELEV, Alexander , DING, Yimin , WHEELWRIGHT, Brian , GREIF, Daniel Guenther , GAO, Weichuan , XU, Miaomiao , GOLLIER, Jacques
摘要： A beam scanner and a display device is based on a photonic integrated circuit coupling light to a pair of opposed reflectors. One reflector is tiltable and has an opening through which the light is coupled, and the other reflector is configured to focus light, e.g. a concave reflector. A polarization folding configuration is used to cause the focused light propagate through the opening in the first reflector, get collimated by the second reflector, get scanned by the first reflector, and propagate through the second reflector to a pupil-replicating lightguide which provides multiple laterally offset parallel portions of the scanned beam.
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公开(公告)号：WO2021055298A1
公开(公告)日：2021-03-25
申请号：PCT/US2020/050782
申请日：2020-09-14
发明人： SULAI, Yusufu Njoni Bamaxam , LI, Gang , GENG, Ying , WHEELWRIGHT, Brian , GOLLIER, Jacques , AMIRSOLAIMANI, Babak , GAO, Weichuan , PENG, Fenglin , BONAR, James Ronald , FABIEN, Chloe Astrid Marie , MOHEGHI, Alireza , YAROSHCHUK, Oleg
IPC分类号： G02B27/01 , G02B27/28 , G02B5/30 , G02F1/1335
摘要： An optical assembly (700) includes a substrate (710) that has a first surface (710-1) and a second surface (710-2) that is opposite to and substantially parallel with the first surface, a reflector (712), and a volume Bragg grating (VBG). The VBG (714) is configured to transmit light incident upon the VBG at an incident angle that is within a first predetermined angular range and to reflect light that is incident upon the VBG at an incident angle that is within a second predetermined angular range distinct from the first angular range. The optical assembly is configured to transmit first light (492) received at the first surface in an optical path that includes reflection at the reflector and at the VBG. The optical assembly is also configured to transmit second light (490) received at the first surface such that the second light is output from the second surface without undergoing reflection at either the reflector or the VBG.
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公开(公告)号：WO2020131810A1
公开(公告)日：2020-06-25
申请号：PCT/US2019/066751
申请日：2019-12-17
发明人： KIM, Ganghun , MAIMONE, Andrew , CAVIN, Robert, Dale , LANMAN, Douglas, Robert , FIX, Alexander, Jobe , LEE, Hee, Yoon , WHEELWRIGHT, Brian , LEIBOVICI, Matthieu, Charles, Raoul
摘要： An eye-tracking system includes a holographic illuminator and a detector. The holographic illuminator includes a light source configured to provide light and a holographic medium optically coupled with the light source. The holographic medium is configured to receive the light provided from the light source and concurrently project a plurality of separate light patterns toward an eye. The detector is configured to detect a reflection of at least a subset of the plurality of separate light patterns, reflected off the eye, for determining a location of a pupil of the eye. Also disclosed is a method for determining a location of a pupil of an eye with the eye-tracking system that includes the holographic illuminator.
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公开(公告)号：WO2022046814A2
公开(公告)日：2022-03-03
申请号：PCT/US2021/047410
申请日：2021-08-24
发明人： ELAZHARY, Tamer , TRAIL, Nicholas , WHEELWRIGHT, Brian , GAO, Weichuan , GOLLIER, Jacques , SILVERSTEIN, Barry David
IPC分类号： G02B27/01 , H04N13/327 , G02B2027/0132 , G02B2027/015 , G02B2027/0174 , G02B2027/0178 , G02B27/0172 , G02B27/0176 , G02B6/0016 , G02B6/0036 , H04N13/344 , H04N17/004 , H04N9/3191
摘要： A self-calibrating display can detect and compensate for binocular disparity or other visual imperfection of the display. The display includes a pair of projection units for projecting test light carrying test images through waveguides, which are normally used to carry images to left and right eyes of a user. A detection unit detects the test light propagated through the waveguides, and extracts the test images. Position of reference features in the detected test images may be used to determine binocular disparity, and luminance and color distribution across the test images may be used to determine the illumination and color uniformity of the images displayed to the user. After the visual defects have been detected, they may be reduced or compensated for by pre-emphasizing or shifting images to be displayed to the left and right eyes of the user. In the embodiment of claim 4, fig.12a-d, the first and second projection units are configured for providing the image light and the test light in a time-sequential manner, wherein the image light carries first and second modified images such that, for each eye of the user, a sum of the respective modified image and the respective test image equals to an image to be displayed to the eye of the user, wherein the detection unit is synchronized with providing the test light by the first and second projection units, for detecting the first and second test images substantially independently on the images to be displayed to the eyes of the user.
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5.发明申请
公开(公告)号：WO2020251758A1
公开(公告)日：2020-12-17
申请号：PCT/US2020/034754
申请日：2020-05-27
摘要： An optical assembly for projecting light from a display includes a first optical waveguide, a reflective optical element configured, and a first in-coupler. The reflective optical element is configured to receive first light having first polarization from the display and to reflect the first light as second light having second polarization distinct from the first polarization. The first in-coupler is coupled with the first optical waveguide. The first in-coupler is configured to receive and transmit the first light. The first in-coupler is further configured to receive the second light and redirect a first portion of the second light so that the first portion of the second light undergoes total internal reflection inside the first optical waveguide.
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公开(公告)号：WO2020112965A1
公开(公告)日：2020-06-04
申请号：PCT/US2019/063552
申请日：2019-11-27
摘要： A varifocal optical assembly includes a plurality of optical elements configured to transmit light in successive optical stages. Each respective optical stage of the successive optical stages includes at least one respective optical element of the plurality of optical elements and is configurable to be in one of a first state and a second state. The respective optical stage in the first state has a first respective optical power for light of a first polarization and a second respective optical power for light of a second polarization. The respective optical stage in the second state has a third optical power for light of the first polarization and a fourth optical power for light of the second polarization. The optical power of varifocal optical assembly is adjustable by changing the states of one or more of the successive optical stages.
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公开(公告)号：WO2019244141A1
公开(公告)日：2019-12-26
申请号：PCT/IB2019/056840
申请日：2019-08-12
摘要： A lens assembly includes a first optical element and a second optical element. The first optical element includes a flat partially reflective layer. The second optical element includes a curved reflective polarizer layer.
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公开(公告)号：WO2019221811A8
公开(公告)日：2019-11-21
申请号：PCT/US2019/022471
申请日：2019-03-15
发明人： GOLLIER, Jacques , WHEELWRIGHT, Brian , MCELDOWNEY, Scott, Charles , SULAI, Yusufu Njoni, Bamaxam , AMIRSOLAIMANI, Babak , GENG, Ying
IPC分类号： G03H1/02
摘要： An optical assembly includes a partial reflector that is optically coupled with a first polarization volume holographic element. The partial reflector is capable of receiving first light having a first circular polarization and transmitting a portion of the first light having a first circular polarization. The first polarization volume holographic element is configured to receive the first portion of the first light and reflect the first portion of the first light as second light having the first circular polarization. The partial reflector is capable of receiving the second light and reflecting a first portion of the second light as third light having a second circular polarization opposite to the first polarization. The first polarization volume holographic element is configured to receive the third light having the second circular polarization and transmit the third light having the second circular polarization.
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公开(公告)号：WO2022140658A2
公开(公告)日：2022-06-30
申请号：PCT/US2021/065054
申请日：2021-12-23
发明人： MATSUDA, Nathan , WHEELWRIGHT, Brian , HEGLAND, Joel , SARAGIH, Jason , LOMBARDI, Stephen Anthony , SIMON KREUZ, Tomas , SAITO, Shunsuke , ZOLLHOEFER, Michael , HAYS, James Henry , RAJ, Amit
IPC分类号： G02B27/01 , H04N13/383 , H04N13/344 , H04N13/307 , G02B27/0172
摘要： A device for providing a reverse pass-through view of a user of a headset display to an onlooker includes an eyepiece comprising an optical surface configured to provide an image to a user on a first side of the optical surface. The device also includes a first camera configured to collect an image of a portion of a face of the user reflected from the optical surface in a first field of view, a display adjacent to the optical surface and configured to project forward an image of the face of the user, and a screen configured to receive light from the display and provide the image of the face of the user to an onlooker.
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公开(公告)号：WO2021071616A1
公开(公告)日：2021-04-15
申请号：PCT/US2020/049617
申请日：2020-09-07
发明人： GAO, Weichuan , WHEELWRIGHT, Brian , PARSONS, Maxwell , GREIF, Daniel Guenther , MCELDOWNEY, Scott Charles
摘要： A scanning projector for a display apparatus includes a first scanning reflector configured to steer a light beam in a first plane, a second scanning reflector configured to steer the light beam received from the first scanning reflector in a second plane, and beam relay optics configured to relay a first pupil defined at the first scanning reflector to a second pupil defined at the second scanning reflector, and to relay the second pupil to an output pupil of the scanning projector. The beam relay optics may include a concave reflector and a polarization beam splitter coupled to a scanning reflector in a triple pass configuration.
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