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1.发明公开公开(公告)号：US20240201495A1
公开(公告)日：2024-06-20
申请号：US18067756
申请日：2022-12-19
发明人： Andrew John Ouderkirk , Fenglin Peng , Ying Geng
CPC分类号： G02B27/0172 , G02B5/3025 , G02B5/3083 , G02B25/001
摘要： A head-mounted display comprising (1) an electronic display configured to emit light and (2) a pancake lens optically coupled to the electronic display, the pancake lens comprising a beam splitter configured to (A) transmit a spatial average fraction of the light and (B) reflect an additional spatial average fraction of the light that is less than the spatial average fraction of the light. Various other apparatuses, devices, systems, and methods are also disclosed.
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公开(公告)号：US11953688B1
公开(公告)日：2024-04-09
申请号：US17943034
申请日：2022-09-12
发明人： Jacques Gollier , Ying Geng , Dong Chen
CPC分类号： G02B27/0172 , G02B27/141 , G02B27/149 , G02B27/283 , G02B2027/0114 , G02B2027/0147
摘要： Various embodiments set forth high-resolution liquid crystal displays and components thereof. In some embodiments, light emitted by a high-resolution green color liquid crystal display is combined, via a combiner, with light emitted by at least one lower-resolution red and blue color liquid crystal display. The red and blue color display(s) may include a single display or two displays positioned on opposing sides of the combiner. The combiner may be a dichroic or polarization-based combiner. Combined light from the green color display and the red and blue color display(s) is passed through collimating optics, such as a pancake lens or a Fresnel lens, toward a viewer's eye.
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公开(公告)号：US11885974B2
公开(公告)日：2024-01-30
申请号：US17076879
申请日：2020-10-22
CPC分类号： G02B27/0179 , G02B6/0016 , G02B6/0055 , G02B26/0825 , G02B27/0172 , G02B2027/0178 , G02B2027/0187
摘要： A device is provided. The device includes a waveguide configured to output a first light having a first polarization to a first side of the waveguide and a second light having the first polarization to a second side of the waveguide. The device also includes an optical element assembly disposed at the first side of the waveguide and configured to convert the first light having the first polarization into a third light having a second polarization, and output the third light toward the waveguide. The device further includes a polarizer disposed at the second side of the waveguide and configured to transmit the third light having the second polarization, and block the second light having the first polarization.
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公开(公告)号：US11835728B2
公开(公告)日：2023-12-05
申请号：US16872109
申请日：2020-05-11
发明人： Fenglin Peng , Ying Geng , Oleg Yaroshchuk
CPC分类号： G02B27/283 , G02B27/0172 , G02B27/0179 , G02B27/425 , G02B2027/0178 , G02B2027/0187
摘要： An example eye-tracking optical assembly includes a light source for illuminating an eye, a first diffraction type polarizing beam splitter (DT-PBS), and a second DT-PBS, wherein the first DT-PBS is configured to direct, based on polarization, a first portion of light from the second DT-PBS towards an eye-tracking detector.
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公开(公告)号：US11726365B1
公开(公告)日：2023-08-15
申请号：US16926444
申请日：2020-07-10
发明人： Ying Geng , Weichuan Gao
IPC分类号： G02B27/01 , G02B27/00 , G02F1/13357 , G02B27/28 , G02F1/1335
CPC分类号： G02F1/13362 , G02B27/0172 , G02B27/0176 , G02B27/283 , G02B2027/015 , G02F1/133616
摘要： An illumination assembly includes one or more light sources and an optical assembly. The one or more light sources is configured to provide illumination light. The optical assembly includes a first optical component, a second optical component, and a third optical component. The first optical component, the second optical component, and the third optical component are positioned so that the illumination light is (i) received by the first optical component, (ii) transmitted through the first optical component toward the second optical component, (iii) reflected at the second optical component toward the third optical component, (iv) reflected at the third optical component toward the second optical component, and (v) transmitted through the second optical component. A method of providing illumination using an optical assembly is also disclosed.
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公开(公告)号：US11726336B2
公开(公告)日：2023-08-15
申请号：US16941337
申请日：2020-07-28
发明人： Jacques Gollier , Fenglin Peng , Ying Geng
CPC分类号： G02B27/0176 , G02B27/0172 , G02B27/283 , G02F1/0136 , G02F1/137 , G02B2027/015 , G02B2027/0152 , G02B2027/0178
摘要： An optical device includes a substrate, a plurality of optical elements positioned on the substrate, and one or more switchable cells. A respective optical element of the plurality of optical elements is configured to redirect light having a first polarization and transmit light having a second polarization orthogonal to the first polarization. The plurality of optical elements includes a first optical element located on a first region of the substrate and a second optical element located on a second region of the substrate. A respective switchable cell of the one or more switchable cells includes optically anisotropic molecules. The one or more switchable cells include a first switchable cell located on a first cell location of the substrate between the first region and the second region of the substrate. Also disclosed are a display device including the optical device and a method performed by the optical device.
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公开(公告)号：US11709411B2
公开(公告)日：2023-07-25
申请号：US17378467
申请日：2021-07-16
发明人： Fenglin Peng , Ying Geng , Jacques Gollier , Giuseppe Calafiore , Alexander Koshelev , Mengfei Wang , Lu Lu
IPC分类号： G02F1/29 , G02B27/01 , G02F1/13 , G02F1/1347 , G06F3/01
CPC分类号： G02F1/292 , G02B27/0172 , G02B27/0179 , G02F1/1323 , G02F1/13473 , G02B2027/0178 , G02B2027/0187 , G06F3/013
摘要： A display device includes a directional illuminator providing a light beam, a display panel downstream of a directional illuminator, for receiving and spatially modulating the light beam, and a beam redirecting module downstream of the display panel, for variably redirecting the spatially modulated light beam. Steering the illuminating light by the beam redirecting module enables one to steer the exit pupil of the display device to match the user's eye location(s).
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公开(公告)号：US11698538B2
公开(公告)日：2023-07-11
申请号：US17555097
申请日：2021-12-17
CPC分类号： G02B27/18 , G02B5/10 , G02B5/3083 , G02B9/06 , G02B26/0833 , G02B26/105 , G02B27/0081 , G02B27/283
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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公开(公告)号：US11619817B1
公开(公告)日：2023-04-04
申请号：US17101211
申请日：2020-11-23
摘要： A head-mounted display includes a pancake lens block. The pancake lens block includes a first waveplate to form first nonlinearly polarized light, a Fresnel surface to reflect and transmit a portion of the first nonlinearly polarized light, a second waveplate to form first linearly polarized light, and a linear reflective polarizer to transmit linear polarized light of a particular polarization rotation direction and to reflect light of other polarization rotation directions.
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公开(公告)号：US11579451B1
公开(公告)日：2023-02-14
申请号：US17070678
申请日：2020-10-14
发明人： Wai Sze Tiffany Lam , Yusufu Njoni Bamaxam Sulai , Robin Sharma , Ying Geng , Lu Lu , Jacques Gollier
摘要： A head-mounted device (HMD) contains a display, an optics block, a redirection structure, and an eye tracking system. The display is configured to emit image light and provide it to an eye of a user. The optics block is configured to direct the emitted light in order to allow it to reach the eye. The eye tracking system contains a camera, an illumination source, and a controller. The camera is configured to capture image data using infrared light reflected from the eye. The controller is configured to use this image data to determine eye tracking information. The illumination source is configured to illuminate the eye with infrared light for the purpose of taking eye tracking measurements. The redirection structure is configured to direct infrared light reflected from the eye to the eye tracking system. In multiple embodiments, redirection structures may comprise prism arrays, lenses, liquid crystal layers, or grating structures.
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