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公开(公告)号：US20230013534A1
公开(公告)日：2023-01-19
申请号：US17525211
申请日：2021-11-12
IPC分类号： F21V8/00
摘要： A waveguide illuminator for illuminating a display panel includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. The out-coupled beam portions undergo optical interference and form a Talbot pattern of illumination correlated with pixel array of the display panel, enabling an optical throughput increase by centering individual Talbot peaks on the display panel pixels.
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公开(公告)号：US11555961B1
公开(公告)日：2023-01-17
申请号：US17525211
申请日：2021-11-12
摘要： A waveguide illuminator for illuminating a display panel includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. The out-coupled beam portions undergo optical interference and form a Talbot pattern of illumination correlated with pixel array of the display panel, enabling an optical throughput increase by centering individual Talbot peaks on the display panel pixels.
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公开(公告)号：US20220397763A1
公开(公告)日：2022-12-15
申请号：US17471161
申请日：2021-09-10
摘要： A folded-path optical component usable as an ocular lens in a near-eye display is disclosed. The folded-path optical component includes a cavity formed by a pair of spaced apart coaxial curved reflective polarizers, and a partial reflector in the cavity for splitting an impinging light beam to propagate along two optical paths ending at an exit pupil of the optical component. Each optical path includes a reflection from one of the reflective polarizers and a transmission through the other one of the reflective polarizers.
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公开(公告)号：US20220179211A1
公开(公告)日：2022-06-09
申请号：US17401160
申请日：2021-08-12
发明人： Fenglin Peng , Ying Geng , Lu Lu , Yun-Han Lee , Alexander Koshelev , Giuseppe Calafiore , Jacques Gollier
IPC分类号： G02B27/01 , G02F1/1335 , F21V8/00
摘要： A display device with a transparent illuminator and an liquid crystal (LC) display panel is disclosed. The transparent illuminator includes a light source and a transparent lightguide, which may be based on a slab of transparent material with zigzag light propagation of the illuminating light in the slab and/or a transparent photonic integrated circuit with singlemode ridge waveguides for spreading the illuminating light in a plane parallel to the plane of LC display panel. The lightguide includes a plurality of grating out-couplers whose position is coordinated with positions of LC pixels for higher throughput. A reflective offset-to-angle optical element may be provided to form an image in angular domain through the LC panel and through the transparent illuminator, resulting in an overall compact and efficient display configuration.
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公开(公告)号：US11307347B2
公开(公告)日：2022-04-19
申请号：US15930318
申请日：2020-05-12
发明人： Ying Geng , Adrian Travis , Gang Li
摘要： A device for illuminating a spatial light modulator includes a light source and an optical element. The light source is configured to provide illumination light. The optical element has a first surface, a second surface that is distinct from and non-parallel to the first surface, and a third surface that is distinct from and non-parallel to the first surface and the second surface. The optical element is configured to receive the illumination light at the first surface, propagate the illumination light via total internal reflection, and output the illumination light from the third surface. Also disclosed is a method performed by the device.
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公开(公告)号：US11256086B2
公开(公告)日：2022-02-22
申请号：US16359117
申请日：2019-03-20
发明人： Babak Amirsolaimani , Pasi Saarikko , Ying Geng , Yusufu Njoni Bamaxam Sulai , Scott Charles McEldowney
IPC分类号： G02B27/00 , G02B27/01 , G02B6/42 , G06T7/70 , G06F3/01 , F21V8/00 , G02B6/27 , G02B23/12 , G02B6/35 , G02B6/10
摘要： An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.
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公开(公告)号：US10989926B1
公开(公告)日：2021-04-27
申请号：US16579182
申请日：2019-09-23
发明人： Nathan Matsuda , Yusufu Njoni Bamaxam Sulai , Ying Geng , Brian Wheelwright , Douglas Robert Lanman , Afsoon Jamali , Jasmine Soria Sears , Alireza Moheghi
摘要： A near-eye display based on a polarization-selective diffusive combiner includes a polarizer for polarizing impinging ambient light to have a first polarization state, and a polarization-selective scatterer downstream of the polarizer, for passing through the ambient light having the first polarization state substantially without scattering, while scattering impinging display light having a second polarization state orthogonal to the first polarization state. The display light at the second polarization state may be provided by a projector, the polarization-selective scatterer playing the role of a projector screen. A polarization-selective ocular lens may be disposed downstream of the polarization-selective scatterer for viewing images generated by the projector while propagating through orthogonally polarized light from outside environment.
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公开(公告)号：US10937129B1
公开(公告)日：2021-03-02
申请号：US16525358
申请日：2019-07-29
摘要： A scene presented by a headset is adjusted to correct for distortion from optical errors of an optics block in the headset. To correct for the distortion, the scene is pre-distorted when presented based on previously modeled distortion of the optics block, so distortion from the optics block corrects the pre-distortion. To model the distortion, the headset displays calibration image including features and images of the calibration image are captured from multiple positions. Differences between locations of features in the calibration images and locations of corresponding features in captured images of the calibration image are identified and a distortion correction is determined based on the differences.
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公开(公告)号：US10852817B1
公开(公告)日：2020-12-01
申请号：US16179656
申请日：2018-11-02
发明人： Andrew John Ouderkirk , Robert Dale Cavin , Alexander Jobe Fix , Ying Geng , Elias Daniel Guestrin , Karol Constantine Hatzilias , Robin Sharma , Yusufu Njoni Bamaxam Sulai
摘要： Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first light deflector configured to direct a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a second light deflector configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.
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公开(公告)号：US10725302B1
公开(公告)日：2020-07-28
申请号：US16179650
申请日：2018-11-02
发明人： Robin Sharma , Andrew John Ouderkirk , Robert Dale Cavin , Alexander Jobe Fix , Ying Geng , Elias Daniel Guestrin , Karol Constantine Hatzilias , Yusufu Njoni Bamaxam Sulai
摘要： Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate that is transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first surface area configured to specularly reflect a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a light deflector embedded in the waveguide-based display substrate or formed on a second surface area of the waveguide-based display substrate. The light deflector is configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.
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