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公开(公告)号：US11422292B1
公开(公告)日：2022-08-23
申请号：US16428999
申请日：2019-06-02
Applicant: Apple Inc.
Inventor： Yakov G. Soskind
IPC: G02B5/18
Abstract: An optical element includes first and second transmission gratings positioned in mutual proximity and in a mutually-parallel orientation and having respective first and second phase modulation profiles with a common period and different, respective first and second numbers of modulation peaks and troughs in each period.
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公开(公告)号：US11775021B2
公开(公告)日：2023-10-03
申请号：US17404783
申请日：2021-08-17
Applicant: Apple Inc.
Inventor： Yakov G. Soskind , Mohammad Yeke Yazdandoost , Patrick B. Wright , Giovanni Gozzini
CPC classification number: G06F1/1656 , G01L1/246 , G06F3/0421 , G06F2203/04109
Abstract: An electronic device may have an optical touch sensor that is insensitive to the presence of moisture. The display may present images through a display cover layer. A light source may illuminate an external object such as a user's finger when the object contacts a surface of the display cover layer. This creates scattered light that may be detected by an array of light sensors. A metasurface grating may be used to couple light from the light source into the display cover layer at an angle such that total internal reflection within the display cover layer is sustained across the display cover layer even when the display cover layer is immersed in water or otherwise exposed to moisture. Additional metasurface gratings may be formed on the display cover layer to redirect light propagating within the display cover layer away from edges that might otherwise defeat total internal reflection.
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公开(公告)号：US11754767B1
公开(公告)日：2023-09-12
申请号：US17151170
申请日：2021-01-17
Applicant: Apple Inc.
Inventor： Yakov G. Soskind , Alexander Shpunt , Graham C. Townsend
IPC: F21V8/00 , G02B6/35 , G02B27/00 , H04N13/332
CPC classification number: G02B6/0016 , G02B6/35 , G02B27/0093 , H04N13/332 , H04N2213/001
Abstract: An optoelectronic device includes a display configured to emit first optical radiation in a first wavelength band through a front surface of the display. A planar optical waveguide, which is transparent in the first wavelength band, is overlaid on the display and is configured to guide second optical radiation in a second wavelength band along a direction transverse to the front surface. One or more diffractive structures are formed in the planar optical waveguide so as to couple the guided second optical radiation between the planar optical waveguide and a region in front of or behind the display.
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公开(公告)号：US20230057534A1
公开(公告)日：2023-02-23
申请号：US17404783
申请日：2021-08-17
Applicant: Apple Inc.
Inventor： Yakov G. Soskind , Mohammad Yeke Yazdandoost , Patrick B. Wright , Giovanni Gozzini
Abstract: An electronic device may have an optical touch sensor that is insensitive to the presence of moisture. The display may present images through a display cover layer. A light source may illuminate an external object such as a user's finger when the object contacts a surface of the display cover layer. This creates scattered light that may be detected by an array of light sensors. A metasurface grating may be used to couple light from the light source into the display cover layer at an angle such that total internal reflection within the display cover layer is sustained across the display cover layer even when the display cover layer is immersed in water or otherwise exposed to moisture. Additional metasurface gratings may be formed on the display cover layer to redirect light propagating within the display cover layer away from edges that might otherwise defeat total internal reflection.
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公开(公告)号：US20220317380A1
公开(公告)日：2022-10-06
申请号：US17591619
申请日：2022-02-03
Applicant: Apple Inc.
Inventor： Yakov G. Soskind
IPC: G02B6/35
Abstract: An optical device includes a waveguide including a first medium, which is transparent and has a first index of refraction at a target wavelength and which has mutually-parallel first and second surfaces arranged so that light at the target wavelength propagates within the waveguide by internal reflection between the first and second surfaces. A coupling layer is disposed over the first surface of the waveguide and includes a second medium having a second index of refraction at the target wavelength, which is greater than the first index of refraction, and is patterned to define a periodic array of cylinders, which have respective cylinder axes perpendicular to the first surface and have respective heights and diameters that are smaller than the target wavelength, and which are spaced apart such that a distance between each of the cylinders and a neighboring cylinder in the array is less than the target wavelength.
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Patent Agency Ranking
公开(公告)号：US12111421B2
公开(公告)日：2024-10-08
申请号：US17549914
申请日：2021-12-14
Applicant: APPLE INC.
Inventor： Yakov G. Soskind , Alexander Shpunt , Graham C. Townsend
Abstract: An optical transmission device includes a waveguide including a transparent medium having mutually-parallel first and second surfaces arranged so that light propagates within the waveguide by internal reflection between the first and second surfaces. At least one light source is configured to inject coherent light into the waveguide. A first array of diffractive structures is applied to the waveguide and configured to couple respective beams of the coherent light out through the first surface of the waveguide. The device includes a second array of tunable optical phase modulators, which are overlaid on respective ones of the diffractive structures in the first array and are configured to apply different respective phase shifts to the respective beams, thereby modulating a far-field light pattern formed by interference between the beams.
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公开(公告)号：US20220299605A1
公开(公告)日：2022-09-22
申请号：US17549914
申请日：2021-12-14
Applicant: APPLE INC.
Inventor： Yakov G. Soskind , Alexander Shpunt , Graham C. Townsend
Abstract: An optical transmission device includes a waveguide including a transparent medium having mutually-parallel first and second surfaces arranged so that light propagates within the waveguide by internal reflection between the first and second surfaces. At least one light source is configured to inject coherent light into the waveguide. A first array of diffractive structures is applied to the waveguide and configured to couple respective beams of the coherent light out through the first surface of the waveguide. The device includes a second array of tunable optical phase modulators, which are overlaid on respective ones of the diffractive structures in the first array and are configured to apply different respective phase shifts to the respective beams, thereby modulating a far-field light pattern formed by interference between the beams.
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公开(公告)号：US11719887B2
公开(公告)日：2023-08-08
申请号：US17591619
申请日：2022-02-03
Applicant: Apple Inc.
Inventor： Yakov G. Soskind
IPC: G02B6/35
CPC classification number: G02B6/3522
Abstract: An optical device includes a waveguide including a first medium, which is transparent and has a first index of refraction at a target wavelength and which has mutually-parallel first and second surfaces arranged so that light at the target wavelength propagates within the waveguide by internal reflection between the first and second surfaces. A coupling layer is disposed over the first surface of the waveguide and includes a second medium having a second index of refraction at the target wavelength, which is greater than the first index of refraction, and is patterned to define a periodic array of cylinders, which have respective cylinder axes perpendicular to the first surface and have respective heights and diameters that are smaller than the target wavelength, and which are spaced apart such that a distance between each of the cylinders and a neighboring cylinder in the array is less than the target wavelength.
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公开(公告)号：US10263391B2
公开(公告)日：2019-04-16
申请号：US15853800
申请日：2017-12-24
Applicant: Apple Inc.
Inventor： Alexander Shpunt , Andrew J. Sutton , Yakov G. Soskind
Abstract: An optoelectronic device includes a semiconductor substrate and a vertical-cavity surface-emitting laser (VCSEL) light source formed on the substrate and configured to emit coherent light at a predefined wavelength along a beam axis perpendicular to a surface of the substrate. A block of a transparent material is mounted on the surface of the substrate and forms, with the VCSEL, a resonant cavity at the predefined wavelength having an entrance face that is aligned with the beam axis and an exit face that is laterally displaced with respect to the entrance face along a cavity axis running parallel to the surface of the substrate.
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公开(公告)号：US20190074661A1
公开(公告)日：2019-03-07
申请号：US15853800
申请日：2017-12-24
Applicant: Apple Inc.
Inventor： Alexander Shpunt , Andrew J. Sutton , Yakov G. Soskind
Abstract: An optoelectronic device includes a semiconductor substrate and a vertical-cavity surface-emitting laser (VCSEL) light source formed on the substrate and configured to emit coherent light at a predefined wavelength along a beam axis perpendicular to a surface of the substrate. A block of a transparent material is mounted on the surface of the substrate and forms, with the VCSEL, a resonant cavity at the predefined wavelength having an entrance face that is aligned with the beam axis and an exit face that is laterally displaced with respect to the entrance face along a cavity axis running parallel to the surface of the substrate.
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