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公开(公告)号：US11874474B1
公开(公告)日：2024-01-16
申请号：US17018579
申请日：2020-09-11
Applicant: Meta Platforms Technologies, LLC
Inventor： 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
CPC classification number: G02B27/0179 , G02B27/0172 , G02B27/283 , G02B27/286 , G02B27/4205 , G02F1/31 , H04N23/55 , H04N23/75 , G02B2027/011 , G02B2027/0138 , G02B2027/0187 , G02F2203/01 , G02F2203/07 , G02F2203/24
Abstract: A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.
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公开(公告)号：US11650426B2
公开(公告)日：2023-05-16
申请号：US16854667
申请日：2020-04-21
Applicant: Meta Platforms Technologies, LLC
Inventor： Qi Zhang , Gang Li , Robin Sharma , Gregory Olegovic Andreev , Andrew John Ouderkirk , Karol Constantine Hatzilias , Ying Geng
CPC classification number: G02B27/0179 , G02B5/32 , G02B27/0081 , G02B27/0172 , G02B27/425 , G02B2027/0109 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G03H1/0402 , G03H2001/0413 , G03H2001/0439 , G03H2223/12 , G03H2223/24 , G03H2260/12
Abstract: Techniques disclosed herein relate generally to eye-tracking in near-eye display systems. One example of an eye illuminator for eye-tracking includes a substrate transparent to visible light, an array of light sources immersed in the substrate and configured to emit infrared light, and a holographic optical element conformally coupled to a surface of the substrate and encapsulated by an encapsulation layer. The holographic optical element is configured to transmit the visible light and diffract the infrared light emitted by the array of light sources to the eye of a user for eye-tracking.
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公开(公告)号：US20230135756A1
公开(公告)日：2023-05-04
申请号：US18085141
申请日：2022-12-20
Applicant: Meta Platforms Technologies, LLC
Inventor： Karol Constantine Hatzilias , Christopher Yuan-Ting Liao , Robin Sharma , Gregory Olegovic Andreev , Paul Armen Tchertchian , Andrew John Ouderkirk
Abstract: A plurality of light sources such as vertical-cavity surface-emitting lasers (VCSELs) are configured to emit light through emission apertures. The light may be near-infrared light. 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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Patent Agency Ranking
公开(公告)号：US11428930B2
公开(公告)日：2022-08-30
申请号：US16534861
申请日：2019-08-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Qi Zhang , Robin Sharma , Andrew John Ouderkirk , Karol Constantine Hatzilias , Christopher Yuan-Ting Liao , Gregory Olegovic Andreev
Abstract: The disclosure includes optical systems and near-eye optical elements configured to suppress stray infrared light. Infrared illuminators illuminator an eyebox area with narrow-band infrared illumination light for eye-tracking. A combiner layer receives reflected infrared light reflected of an eye of the user and directs the reflected infrared light to a camera configured to capture eye-tracking images of an eye of a user. An anti-reflection (AR) coating may be disposed on a base curvature to reduce Fresnel reflections that generate stray light. A ghost suppression component may be paired with the infrared illuminators to reduce stray light becoming incident on the camera.
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公开(公告)号：US11650403B2
公开(公告)日：2023-05-16
申请号：US16750777
申请日：2020-01-23
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： 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: G02B3/00 , G02B27/01 , G02B27/12 , G02B19/00 , G02B1/00 , G02B5/04 , G02B27/09 , H01S5/00 , H01S5/026 , H01S5/183 , H01S5/343
CPC classification number: G02B19/0047 , G02B1/002 , G02B3/00 , G02B5/045 , G02B27/0172 , G02B27/0179 , G02B27/0961 , G02B27/0972 , H01S5/005 , H01S5/026 , H01S5/183 , H01S5/3432 , H01S5/34353 , G02B2003/0093 , G02B2027/0178 , G02B2027/0187
Abstract: 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：US11575246B2
公开(公告)日：2023-02-07
申请号：US16675513
申请日：2019-11-06
Applicant: Meta Platforms Technologies, LLC
Inventor： Karol Constantine Hatzilias , Christopher Yuan-Ting Liao , Robin Sharma , Gregory Olegovic Andreev , Paul Armen Tchertchian , Andrew John Ouderkirk
Abstract: 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：US11615647B1
公开(公告)日：2023-03-28
申请号：US16696776
申请日：2019-11-26
Applicant: Meta Platforms Technologies, LLC
Inventor： Gregory Olegovic Andreev , Gang Li , Changwon Jang
Abstract: Systems and method for eye tracking are provided. In some embodiments, the eye tracking system includes a light source configured to generate light and project the light toward an object in a field of view, a detector configured to receive reflected portions of the light from the field of view in order to image the object, and a combiner including a volume grating configured to direct light reflected from different points in a field of view to the light detector. The volume grating includes a plurality of portions along a first area and each of the portions comprising a unique k-vector that is dependent on a respective portion of the field of view.
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公开(公告)号：US11609424B2
公开(公告)日：2023-03-21
申请号：US16505462
申请日：2019-07-08
Applicant: Meta Platforms Technologies, LLC
Inventor： Gregory Olegovic Andreev , Gang Li , Erik Shipton , Yingfei Jiang , Wanli Chi , Andrew John Ouderkirk
Abstract: Techniques disclosed herein relate to a near-eye display system. One example of an eye-tracking system includes a substrate transparent to visible light and infrared light and a reflective holographic grating conformally coupled to a surface of the substrate. The reflective holographic grating is configured to transmit the visible light and reflectively diffract infrared light in a first wavelength range for eye tracking. The refractive index modulation of the reflective holographic grating is apodized in a direction along a thickness of the reflective holographic grating to reduce optical artifacts in the visible light.
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