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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：US11366298B1
公开(公告)日：2022-06-21
申请号：US16535794
申请日：2019-08-08
发明人： Babak Amirsolaimani , Yun-Han Lee , Robin Sharma
摘要： A telecentric optical element that has a first surface, a second surface, and a layer of optically anisotropic material between the first surface and the second surface. The telecentric optical element is configured to receive light on the first surface, the light having propagated from a location within a predetermined distance range from the first surface of the optical element. The telecentric optical element is also configured to redirect a first portion of the light, having a first polarization, off the first surface of the telecentric optical element in an off-axis direction, and to transmit a second portion of light, having polarization different from the first polarization, to the second surface. An eye-tracking assembly that includes the telecentric optical element and a display device that includes the telecentric optical element are also disclosed.
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公开(公告)号：US11366260B1
公开(公告)日：2022-06-21
申请号：US16417334
申请日：2019-05-20
摘要： An optical system includes an optical lens, a polarization volume hologram (PVH) layer arranged over the optical lens, and an IR absorbing structure arranged between the optical lens and the PVH layer. The PVH layer being configured to reflect infrared (IR) light. The IR absorbing structure includes a quarter-wave plate (QWP) arranged between the optical lens and the PVH layer and a linear absorptive polarizer arranged between the QWP and the optical lens. The linear absorptive polarizer is configured to absorb IR light.
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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：US10969675B1
公开(公告)日：2021-04-06
申请号：US16436736
申请日：2019-06-10
IPC分类号： G03B21/28 , G02B26/12 , G02B27/30 , G02F1/1335 , G02B27/01
摘要： An optical assembly includes a first optical waveguide, a first in-coupler coupled with the first optical waveguide and a projector configured to project image light toward a first side of the first optical waveguide. The optical assembly also includes a first scanning reflector optically coupled with the projector and disposed on a second side of the first optical waveguide that is opposite to the first side. The projector is configured to project image light. The first scanning reflector is configured to receive the image light and to redirect the image light across a first range of directions. The first in-coupler is configured to redirect a first portion of the image light so that the first portion of the image light undergoes total internal reflection inside the first optical waveguide.
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公开(公告)号：US20190353891A1
公开(公告)日：2019-11-21
申请号：US16222796
申请日：2018-12-17
摘要： A method includes obtaining a first optical assembly including a first optical element and a first flexible membrane. The first optical element has a first optical element surface and a second optical element surface that is opposite to the first optical element surface. The first flexible membrane has a first membrane surface and a second membrane surface that is opposite to the first membrane surface. The first optical element is a geometric phase optical element or a polarization volume hologram optical element. The second optical element surface of the first optical element is coupled with at least a first portion of the first membrane surface of the first flexible membrane. The method also includes coupling the first optical element with the first flexible membrane attached thereto to a target substrate. Also disclosed is an optical assembly comprising the first optical element and the first flexible membrane.
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公开(公告)号：US20230176377A1
公开(公告)日：2023-06-08
申请号：US17671446
申请日：2022-02-14
发明人： Sihui He , Jacques Gollier , Maxwell Parsons , Babak Amirsolaimani , Wanli Guenther Chi , Daniel Guenther Grief , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
IPC分类号： G02B27/01 , G02B27/00 , G02F1/1335 , G02B26/08
CPC分类号： G02B27/0172 , G02B26/0816 , G02B27/0093 , G02F1/133504 , G02B2027/0174 , G02B2027/0178
摘要： A directional illuminator for a display apparatus includes a switchable diffuser for tuning a divergence of a light beam illuminating a display panel of the display apparatus. The tunable divergence of the illuminating light beam translates into a tunable exit pupil size at the eyebox of the display apparatus, which may be matched to a pupil size of a user’s eye, thus providing a configurable illumination of the eye pupil. A tiltable reflector in an optical path of the illuminating light beam may be used to shift the location of the exit pupil at the eyebox of the display apparatus.
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公开(公告)号：US20230176368A1
公开(公告)日：2023-06-08
申请号：US17701558
申请日：2022-03-22
发明人： Sihui He , Maxwell Parsons , Babak Amirsolaimani , Wanli Chi , Daniel Guenther Greif , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
IPC分类号： G02B27/00 , G02B27/42 , G02B27/01 , G02F1/29 , G02F1/33 , H04N5/232 , G06F3/01 , G06T3/40 , G01B11/22 , G01S17/10 , G01S7/4865
CPC分类号： G02B27/0081 , G02B27/4205 , G02B27/0172 , G02B27/0093 , G02F1/292 , G02F1/33 , H04N5/23238 , G06F3/013 , G06T3/4038 , G01B11/22 , G01S17/10 , G01S7/4865 , G02B2027/0178 , G02B2027/0138 , G02B2027/0174 , H04N9/04
摘要： A field of view of an imaging or ranging device may be increased multiple times by providing a switchable diffraction grating structure upstream of an imaging camera or ranging light source. The switchable diffraction grating changes the angle of propagating of incoming light by a fixed step, enabling the device to switch between several portions of a compound field of view. The switchable diffraction grating structure may be supported by a lightguide that guides the image light or ranging light by a series of reflections from opposed surfaces of the lightguide.
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公开(公告)号：US20230176274A1
公开(公告)日：2023-06-08
申请号：US17699012
申请日：2022-03-18
发明人： Sihui He , Jacques Gollier , Maxwell Parsons , Babak Amirsolaimani , Wanli Chi , Daniel Guenther Greif , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
CPC分类号： G02B6/005 , G02B6/0031 , G02F1/294
摘要： An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupler supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and a tunable microlens array for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the tunable microlens array due to Talbot effect. The display panel may be illuminated in a color-sequential manner, and the tunable microlens array may be used to adjust the focal plane position for each color channel individually.
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公开(公告)号：US20220107504A1
公开(公告)日：2022-04-07
申请号：US17555097
申请日：2021-12-17
摘要： A multipass scanner usable e.g. in a near-eye display is disclosed. The multipass scanner scans a light beam angularly, forming an image in angular domain. The multipass scanner includes a light source, a tiltable reflector, and a multipass coupler that couples light emitted by the light source to the tiltable reflector, receives the reflected light and couples it back to the tiltable reflector to double the scanning angle. Then, the multipass coupler couples the light reflected at least twice from the tiltable reflector to an exit pupil of the scanner. A pupil-replicating waveguide disposed at the exit pupil of the scanner extends the image in angular domain. Multiple reflections of the light beam from the tiltable reflector enable one to increase the angular scanning range and associated field of view of the display without having to increase the angular scanning range of the tiltable reflector.
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