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公开(公告)号：US10890778B2
公开(公告)日：2021-01-12
申请号：US16437902
申请日：2019-06-11
发明人： Yun-Han Lee , Mengfei Wang , Junren Wang , Lu Lu , Robin Sharma , Gregory Olegovic Andreev , Garam Young , Andrew John Ouderkirk , Babak Amirsolaimani , Fenglin Peng , Barry David Silverstein
摘要： An optical system includes a grating including at least one substrate and a grating structure coupled to the at least one substrate. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range. The optical system also includes a polarizer configured to transmit the first light diffracted by the grating structure and block a second light reflected by a surface of the at least one substrate.
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公开(公告)号：US11107972B2
公开(公告)日：2021-08-31
申请号：US16262439
申请日：2019-01-30
发明人： Kenneth Diest , Andrew John Ouderkirk , Robin Sharma , Tanya Malhotra , Barry David Silverstein , Christopher Yuan Ting Liao , Erik Shipton , Gregory Olegovic Andreev
IPC分类号： G02F1/01 , H01L41/193 , H01L41/09 , H01L41/047 , H04R17/00 , G02B27/01 , G02F1/061 , G02B5/08 , G02B5/30 , G02B27/10 , G06F3/01 , C08F14/20 , C08F14/22 , C08G77/04 , H01L41/083 , H01L41/18 , C08L83/04 , B82Y30/00 , B82Y40/00
摘要： An optical element includes a nanovoided polymer layer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Compression or expansion of the nanovoided polymer layer, for instance, can be used to reversibly control the size and shape of the nanovoids within the polymer layer and hence tune its refractive index over a range of values, e.g., during operation of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
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公开(公告)号：US10884241B2
公开(公告)日：2021-01-05
申请号：US16434175
申请日：2019-06-07
发明人： Karol Constantine Hatzilias , Robin Sharma , Qi Zhang , Gregory Olegovic Andreev , Christopher Yuan-Ting Liao , Andrew John Ouderkirk
摘要： An optical element for a head mounted display (HMD) includes an illumination layer, an optical combiner, and an optically transparent layer. The illumination layer is configured to emit infrared light towards an eyeward side of the optical element. The optical combiner is configured to receive reflected infrared light that is reflected by an eye of a user and to direct the reflected infrared light towards an infrared camera. The optically transparent layer is disposed between the illumination layer and the eyeward side of the optical element. The optical element may further include one or both of a confinement layer and an infrared extractor. The confinement layer is disposed on a surface of the optically transparent layer to induce waveguiding of confined infrared light propagating within the optically transparent layer. The infrared extractor is disposed on a side-edge of the optically transparent layer to absorb or frustrate the confined infrared light.
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公开(公告)号：US20200259307A1
公开(公告)日：2020-08-13
申请号：US16750777
申请日：2020-01-23
发明人： Robin Sharma , Andrew John Ouderkirk , Christopher Yuan Ting Liao , Qi Zhang , Tanya Malhotra , Karol Constantine Hatzilias , Maik Scheller , Sheng Ye , Gregory Olegovic Andreev , Guohua Wei
IPC分类号： H01S5/00 , G02B3/00 , H01S5/026 , H01S5/343 , H01S5/183 , G02B27/01 , G02B1/00 , G02B5/04 , G02B27/09
摘要： An example device may include a light source, an optical element, and, optionally, an encapsulant layer. A light beam generated by the light source may be received by the optical element and redirected towards an illumination target, such as an eye of a user. The optical element may include a material, for example, with a refractive index of at least approximately 2 at a wavelength of the light beam. The light source may be a semiconductor light source, such as a light-emitting diode or a laser. The optical element may be supported by an emissive surface of the light source. Refraction at an exit surface of the optical element, and/or within a metamaterial layer, may advantageously modify the beam properties, for example, in relation to illuminating a target. In some examples, the light source and optical element may be integrated into a monolithic light source module.
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公开(公告)号：US11415808B1
公开(公告)日：2022-08-16
申请号：US16720024
申请日：2019-12-19
发明人： Robin Sharma , Andrew John Ouderkirk , Christopher Yuan Ting Liao , Qi Zhang , Tanya Malhotra , Karol Constantine Hatzillias , Maik Scheller , Sheng Ye , Gregory Olegovic Andreev
摘要： An example device may include a light source, an optical element, and an encapsulant layer. A light beam generated by the light source may be received by the optical element, and redirected into the encapsulant layer. The optical element may include a high-index material, for example, with a refractive index of at least approximately 1.5 at the wavelength of the light beam. The light source may be a semiconductor light source, such as a light emitting diode or a laser. The optical element may be embedded in the encapsulant layer, and the optical element may have a curved exit surface. Refraction at the exit surface of the optical element may redirect the light beam towards a target. In some examples, the curvature of a freeform exit surface may be configured to improve the uniformity of target illumination
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公开(公告)号：US11234095B1
公开(公告)日：2022-01-25
申请号：US16880187
申请日：2020-05-21
发明人： Sang-Ik Cho , Pablo Francisco Faundez Hoffmann , Karol Constantine Hatzilias , Gregory Olegovic Andreev
摘要： An audio system (e.g., of an artificial reality headset) determines a position of the headset relative to a position of a head of a user wearing the headset. The determination is based in part on an image of a portion of the head from a tracking camera (e.g., eye tracking and/or face tracking) on the headset. The audio system adjusts an acoustic parameter based in part on the determined position of the headset. The audio system performs an action that uses the adjusted acoustic parameter.
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公开(公告)号：US11073697B1
公开(公告)日：2021-07-27
申请号：US16351477
申请日：2019-03-12
发明人： Robin Sharma , Andrew John Ouderkirk , Tanya Malhotra , Kenneth Diest , Gregory Olegovic Andreev , Erik Shipton , Christopher Yuan Ting Liao , Barry David Silverstein
摘要： Embodiments of the disclosure are generally directed to systems and methods for switchable electroactive devices for head-mounted displays (HMDs). In particular, a method may include (1) applying an electric field to an electroactive element of an electroactive device via electrodes of the electroactive device that are electrically coupled to the electroactive element to compress the electroactive element, which comprises a polymer material defining nanovoids, such that an average size of the nanovoids is decreased and a density of the nanovoids is increased in the electroactive element, wherein the electroactive device is positioned at a distance from a user's eye, and (2) emitting image light from an emissive device positioned such that at least a portion of the image light is incident on a surface of the electroactive device facing the user's eye.
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公开(公告)号：US20200153203A1
公开(公告)日：2020-05-14
申请号：US16675513
申请日：2019-11-06
发明人： Karol Constantine Hatzilias , Christopher Yuan-Ting Liao , Robin Sharma , Gregory Olegovic Andreev , Paul Armen Tchertchian , Andrew John Ouderkirk
摘要： A plurality of light sources such as vertical-cavity surface-emitting lasers (VCSELs) are configured to emit non-visible light through emission apertures. Optics are formed over the emission apertures of the plurality of light sources. The optics may provide different tilt angles or divergence angles to the non-visible light emitted by the light sources in the plurality of light sources.
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公开(公告)号：US11233189B2
公开(公告)日：2022-01-25
申请号：US16262433
申请日：2019-01-30
发明人： Kenneth Diest , Andrew John Ouderkirk , Gregory Olegovic Andreev , Erik Shipton , Tanya Malhotra , Barry David Silverstein , Christopher Yuan Ting Liao
IPC分类号： G02F1/03 , G02F1/07 , H01L41/193 , H01L41/09 , H01L41/047 , H04R17/00 , G02B27/01 , G02F1/01 , G02F1/061 , G02B5/08 , G02B5/30 , G02B27/10 , G06F3/01 , C08F14/20 , C08F14/22 , C08G77/04 , H01L41/083 , H01L41/18 , G02B5/18 , F21V8/00 , G02F1/29 , H01L41/04 , H01L41/253 , H02N1/00 , B05D3/06 , B05D3/10 , G02C7/08 , G06K9/00 , G06T19/00 , C08L83/04 , B82Y30/00 , B82Y40/00 , G02B7/04 , G02B26/00
摘要： A form birefringent optical element includes a structured layer and a dielectric environment disposed over the structured layer. At least one of the structured layer and the dielectric environment includes a nanovoided polymer, the nanovoided polymer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Actuation of the nanovoided polymer can be used to reversibly control the form birefringence of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
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公开(公告)号：US11067821B2
公开(公告)日：2021-07-20
申请号：US16505412
申请日：2019-07-08
发明人： Gregory Olegovic Andreev , Gang Li , Erik Shipton , Yingfei Jiang , Wanli Chi , Andrew John Ouderkirk
摘要： Techniques disclosed herein relate to a near-eye display system. One example of an optical device of a near-eye display includes a substrate and holographic grating conformally coupled to a surface of the substrate. The substrate is transparent to visible light and infrared light and is configured to be placed in front of an eye of a user of the near-eye display. A refractive index modulation of the holographic grating is apodized in a surface-normal direction of the substrate to reduce optical artifacts in the visible light.
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