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公开(公告)号：US11874110B2
公开(公告)日：2024-01-16
申请号：US17118394
申请日：2020-12-10
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Mingzhou Jin
CPC classification number: G01B9/02092 , G02F1/093 , G02F1/21 , G06F3/017
Abstract: Methods and systems concerning non-reciprocal sensing paths for a self-mixing interferometry operation are disclosed herein. Optical components may be used to direct light transmit from a light source along an illumination path. The optical components may additionally return light to the light source after being reflected from a target and may direct the returned light along a collection path. The illumination path and the collection path may be at least partially non-reciprocal so that the transmitted light and the returned light follow along partially different paths. Once the received light is received within a cavity of the light source, a self-mixing interferometry operation may be performed and may be used to detect a property of the target in relation to the light source.
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公开(公告)号：US20240003671A1
公开(公告)日：2024-01-04
申请号：US18202813
申请日：2023-05-26
Applicant: Apple Inc.
Inventor： Mingzhou Jin , Tong Chen , William Whitney
IPC: G01B9/02001 , G01B9/02
CPC classification number: G01B9/02001 , G01B9/02092 , G01B9/02094
Abstract: An electronic device including an SMI sensor may be operated to predict interference in an SMI signal caused by speckle provided by the SMI sensor and operate the SMI sensor based on predicted interference in the SMI signal caused by speckle. Predicting interference in the SMI signal caused by speckle and operating the SMI sensor accordingly may allow for accurate measurement of physical phenomena using the SMI sensor with reduced power consumption.
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公开(公告)号：US11543235B2
公开(公告)日：2023-01-03
申请号：US17219779
申请日：2021-03-31
Applicant: Apple Inc.
Inventor： Tong Chen , Fei Tan , Mingzhou Jin
Abstract: An optical sensor system including a semiconductor substrate; a self-mixing interferometry (SMI) sensor formed on the semiconductor substrate and including a semiconductor laser having a resonant cavity; and an array of photodetectors formed on the semiconductor substrate. The SMI sensor is configured to generate an SMI signal responsive to a retro-reflection of electromagnetic radiation emitted by the semiconductor laser and received into the resonant cavity. The array of photodetectors is configured to generate a set of angular-resolved scatter signals responsive to a scatter of the electromagnetic radiation emitted by the semiconductor laser.
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4.发明公开公开(公告)号：US20230314185A1
公开(公告)日：2023-10-05
申请号：US17710682
申请日：2022-03-31
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Daryl I. Vulis , Mingzhou Jin
CPC classification number: G01D5/266 , G01J9/0246 , G01N15/1434 , G06F3/0308 , G06F3/013 , G01J2009/0288 , G01N2015/1454 , G06F3/03545
Abstract: An optical sensor module includes an interferometric sensor and a set of one or more optical elements. The interferometric sensor includes a coherent light source and at least one detector configured to generate an interferometric signal. The set of one or more optical elements is configured to simultaneously direct a first portion of light emitted by the coherent light source toward a first focus area within a first depth of focus; direct a second portion of the light emitted by the coherent light source toward a second focus area within a second depth of focus; and direct portions of the emitted light that are returned from one or more objects within the first depth of focus or the second depth of focus toward the interferometric sensor.
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公开(公告)号：US11460293B2
公开(公告)日：2022-10-04
申请号：US17124132
申请日：2020-12-16
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Mingzhou Jin
IPC: G01B9/02097 , G01B11/30 , G01B9/02 , G01B11/24 , A61B5/00
Abstract: An electronic device is described. The electronic device includes a housing, a set of one or more SMI sensors attached to the housing, and a processor. The set of one or more SMI sensors includes a set of one or more electromagnetic radiation emitters having a set of one or more resonant cavities and configured to emit a set of one or more beams of electromagnetic radiation. The set of one or more SMI sensors also includes a set of one or more detectors configured to generate indications of self-mixing within the set of one or more resonant cavities. The processor is configured to characterize, using the indications of self-mixing, an optical field speckle of a target. The processor is also configured to characterize, using the characterization of the optical field speckle, a surface quality of the target.
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Patent Agency Ranking
公开(公告)号：US20220099436A1
公开(公告)日：2022-03-31
申请号：US17124132
申请日：2020-12-16
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Mingzhou Jin
Abstract: An electronic device is described. The electronic device includes a housing, a set of one or more SMI sensors attached to the housing, and a processor. The set of one or more SMI sensors includes a set of one or more electromagnetic radiation emitters having a set of one or more resonant cavities and configured to emit a set of one or more beams of electromagnetic radiation. The set of one or more SMI sensors also includes a set of one or more detectors configured to generate indications of self-mixing within the set of one or more resonant cavities. The processor is configured to characterize, using the indications of self-mixing, an optical field speckle of a target. The processor is also configured to characterize, using the characterization of the optical field speckle, a surface quality of the target.
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公开(公告)号：US20220099431A1
公开(公告)日：2022-03-31
申请号：US17118394
申请日：2020-12-10
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Mingzhou Jin
Abstract: Methods and systems concerning non-reciprocal sensing paths for a self-mixing interferometry operation are disclosed herein. Optical components may be used to direct light transmit from a light source along an illumination path. The optical components may additionally return light to the light source after being reflected from a target and may direct the returned light along a collection path. The illumination path and the collection path may be at least partially non-reciprocal so that the transmitted light and the returned light follow along partially different paths. Once the received light is received within a cavity of the light source, a self-mixing interferometry operation may be performed and may be used to detect a property of the target in relation to the light source.
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8.发明授权公开(公告)号：US12209890B2
公开(公告)日：2025-01-28
申请号：US17710682
申请日：2022-03-31
Applicant: Apple Inc.
Inventor： Tong Chen , Ahmet Fatih Cihan , Daryl I. Vulis , Mingzhou Jin
IPC: G01N15/1434 , G01D5/26 , G01J9/02 , G06F3/01 , G06F3/03 , G06F3/0354
Abstract: An optical sensor module includes an interferometric sensor and a set of one or more optical elements. The interferometric sensor includes a coherent light source and at least one detector configured to generate an interferometric signal. The set of one or more optical elements is configured to simultaneously direct a first portion of light emitted by the coherent light source toward a first focus area within a first depth of focus; direct a second portion of the light emitted by the coherent light source toward a second focus area within a second depth of focus; and direct portions of the emitted light that are returned from one or more objects within the first depth of focus or the second depth of focus toward the interferometric sensor.
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公开(公告)号：US11909171B2
公开(公告)日：2024-02-20
申请号：US17219744
申请日：2021-03-31
Applicant: Apple Inc.
Inventor： Tong Chen , Fei Tan , Mingzhou Jin
IPC: G01C3/08 , H01S5/026 , H01L31/0352 , H01S5/183 , H01S5/34 , G01S7/481 , G01S7/4912 , G01S7/4913
CPC classification number: H01S5/026 , G01S7/4812 , G01S7/4913 , G01S7/4916 , G01S7/4917 , H01L31/035236 , H01S5/18361 , H01S5/34
Abstract: An optical sensor system includes a set of epitaxial layers formed on a semiconductor substrate. The set of epitaxial layers defines a semiconductor laser having a first multiple quantum well (MQW) structure. Electromagnetic radiation is generated by the first MQW structure, emitted from the first MQW structure, and self-mixed with a portion of the emitted electromagnetic radiation that is returned to the first MQW structure. The set of epitaxial layers also defines a second MQW structure operable to generate a first photocurrent responsive to detecting a first emission of the semiconductor laser, and a third MQW structure operable to generate a second photocurrent responsive to detecting a second emission of the semiconductor laser. The optical sensor system also includes a circuit configured to generate a self-mixing interferometry (SMI) signal by combining the first photocurrent and the second photocurrent.
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公开(公告)号：US20220320820A1
公开(公告)日：2022-10-06
申请号：US17219744
申请日：2021-03-31
Applicant: Apple Inc.
Inventor： Tong Chen , Fei Tan , Mingzhou Jin
IPC: H01S5/026 , H01S5/125 , H01S5/183 , H01L31/0352 , H01S5/34
Abstract: An optical sensor system includes a set of epitaxial layers formed on a semiconductor substrate. The set of epitaxial layers defines a semiconductor laser having a first multiple quantum well (MQW) structure. Electromagnetic radiation is generated by the first MQW structure, emitted from the first MQW structure, and self-mixed with a portion of the emitted electromagnetic radiation that is returned to the first MQW structure. The set of epitaxial layers also defines a second MQW structure operable to generate a first photocurrent responsive to detecting a first emission of the semiconductor laser, and a third MQW structure operable to generate a second photocurrent responsive to detecting a second emission of the semiconductor laser. The optical sensor system also includes a circuit configured to generate a self-mixing interferometry (SMI) signal by combining the first photocurrent and the second photocurrent.
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