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    Interrogating DOE integrity by reverse illumination
    11.
    发明授权
    Interrogating DOE integrity by reverse illumination 有权

    公开(公告)号：US10605695B2

    公开(公告)日：2020-03-31

    申请号：US15947882

    申请日：2018-04-09

    Applicant: APPLE INC.

    Inventor： Denis G. Chen ,  Brian S. Medower ,  Chin Han Lin

    IPC: G01J3/02 ,  G01M11/02 ,  G01J3/18 ,  G01J1/32 ,  G01J1/02

    Abstract: Optical apparatus includes a primary radiation source, which emits first optical radiation along a first optical axis. A DOE includes at least an entrance surface, upon which the first optical radiation from the primary radiation source is incident, and an exit surface, through which one or more primary diffraction orders of the first optical radiation are emitted from the DOE. At least one secondary radiation source is configured to direct second optical radiation to impinge on the DOE along a second optical axis, which is non-parallel to the first optical axis, causing at least a part of the second optical radiation to be diffracted by the DOE such that one or more secondary diffraction orders of the second optical radiation are emitted through the entrance face of the DOE. At least one detector is configured to sense at least one of the secondary diffraction orders of the second optical radiation.

    Interrogating DOE integrity by reverse illumination
    13.
    发明申请
    Interrogating DOE integrity by reverse illumination 有权

    公开(公告)号：US20170227416A1

    公开(公告)日：2017-08-10

    申请号：US15019978

    申请日：2016-02-10

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Brian S. Medower ,  Chin Han Lin

    IPC: G01M11/02 ,  G01J3/18

    CPC classification number: G01M11/02 ,  G01J1/32 ,  G01J3/027 ,  G01J3/18 ,  G01J2001/0276

    Abstract: Optical apparatus includes a primary radiation source, which emits first optical radiation along a first optical axis. A DOE includes at least an entrance surface, upon which the first optical radiation from the primary radiation source is incident, and an exit surface, through which one or more primary diffraction orders of the first optical radiation are emitted from the DOE. At least one secondary radiation source is configured to direct second optical radiation to impinge on the DOE along a second optical axis, which is non-parallel to the first optical axis, causing at least a part of the second optical radiation to be diffracted by the DOE such that one or more secondary diffraction orders of the second optical radiation are emitted through the entrance face of the DOE. At least one detector is configured to sense at least one of the secondary diffraction orders of the second optical radiation.

    Laser Emitters with Integrated Thermal Sensors
    15.
    发明公开
    Laser Emitters with Integrated Thermal Sensors 审中-公开

    公开(公告)号：US20240106203A1

    公开(公告)日：2024-03-28

    申请号：US18078819

    申请日：2022-12-09

    Applicant: Apple Inc.

    Inventor： Chin Han Lin ,  Yazan Z. Alnahhas ,  Fei Tan

    IPC: H01S5/42 ,  H01S5/024 ,  H01S5/125 ,  H01S5/183

    CPC classification number: H01S5/423 ,  H01S5/024 ,  H01S5/125 ,  H01S5/183

    Abstract: Embodiments of the disclosure relate to an optoelectronic device having an epitaxial stack, an array of laser emitters, and a thermal sensor. The epitaxial stack includes a set of epitaxial layers. The array of laser emitters is formed in the set of epitaxial layers. The thermal sensor is coupled to the epitaxial stack at a location adjacent to a laser emitter of the array of laser emitters. The optoelectronic device further includes a controller configured to receive an output of the thermal sensor and determine a temperature at a junction between an active region and an inactive region in the laser emitter by in-situ measurements.

    Creating arbitrary patterns on a 2-d uniform grid VCSEL array
    16.
    发明授权
    Creating arbitrary patterns on a 2-d uniform grid VCSEL array 有权

    公开(公告)号：US10951008B2

    公开(公告)日：2021-03-16

    申请号：US16867594

    申请日：2020-05-06

    Applicant: APPLE INC.

    Inventor： Chin Han Lin ,  Weiping Li ,  Xiaofeng Fan

    IPC: H01S5/183 ,  H01L29/15 ,  H01S5/026 ,  H01S5/187 ,  H01S5/42 ,  H01S5/042 ,  H01S5/20

    Abstract: An optoelectronic device includes a semiconductor substrate and an array of optoelectronic cells, formed on the semiconductor substrate. The cells include first epitaxial layers defining a lower distributed Bragg-reflector (DBR) stack; second epitaxial layers formed over the lower DBR stack, defining a quantum well structure; third epitaxial layers, formed over the quantum well structure, defining an upper DBR stack; and electrodes formed over the upper DBR stack, which are configurable to inject an excitation current into the quantum well structure of each optoelectronic cell. A first set of the optoelectronic cells are configured to emit laser radiation in response to the excitation current. In a second set of the optoelectronic cells, interleaved with the first set, at least one element of the optoelectronic cells, selected from among the epitaxial layers and the electrodes, is configured so that the optoelectronic cells in the second set do not emit the laser radiation.

    Creating arbitrary patterns on a 2-D uniform grid VCSEL array
    17.
    发明申请
    Creating arbitrary patterns on a 2-D uniform grid VCSEL array 审中-公开

    公开(公告)号：US20190356112A1

    公开(公告)日：2019-11-21

    申请号：US16524313

    申请日：2019-07-29

    Applicant: APPLE INC.

    Inventor： Chin Han Lin ,  Weiping Li ,  Xiaofeng Fan

    IPC: H01S5/183 ,  H01S5/042 ,  H01S5/42 ,  H01S5/026 ,  H01S5/187 ,  H01L29/15

    Abstract: An optoelectronic device includes a semiconductor substrate and an array of optoelectronic cells, formed on the semiconductor substrate. The cells include first epitaxial layers defining a lower distributed Bragg-reflector (DBR) stack; second epitaxial layers formed over the lower DBR stack, defining a quantum well structure; third epitaxial layers, formed over the quantum well structure, defining an upper DBR stack; and electrodes formed over the upper DBR stack, which are configurable to inject an excitation current into the quantum well structure of each optoelectronic cell. A first set of the optoelectronic cells are configured to emit laser radiation in response to the excitation current. In a second set of the optoelectronic cells, interleaved with the first set, at least one element of the optoelectronic cells, selected from among the epitaxial layers and the electrodes, is configured so that the optoelectronic cells in the second set do not emit the laser radiation.

    Creating arbitrary patterns on a 2-D uniform grid VCSEL array
    18.
    发明授权
    Creating arbitrary patterns on a 2-D uniform grid VCSEL array 有权

    公开(公告)号：US10411437B2

    公开(公告)日：2019-09-10

    申请号：US16180041

    申请日：2018-11-05

    Applicant: APPLE INC.

    Inventor： Chin Han Lin ,  Weiping Li ,  Xiaofeng Fan

    IPC: H01S5/183 ,  H01L29/15 ,  H01S5/026 ,  H01S5/187 ,  H01S5/42 ,  H01S5/042 ,  H01S5/20

    Abstract: An optoelectronic device includes a semiconductor substrate and an array of optoelectronic cells, formed on the semiconductor substrate. The cells include first epitaxial layers defining a lower distributed Bragg-reflector (DBR) stack; second epitaxial layers formed over the lower DBR stack, defining a quantum well structure; third epitaxial layers, formed over the quantum well structure, defining an upper DBR stack; and electrodes formed over the upper DBR stack, which are configurable to inject an excitation current into the quantum well structure of each optoelectronic cell. A first set of the optoelectronic cells are configured to emit laser radiation in response to the excitation current. In a second set of the optoelectronic cells, interleaved with the first set, at least one element of the optoelectronic cells, selected from among the epitaxial layers and the electrodes, is configured so that the optoelectronic cells in the second set do not emit the laser radiation.

    Optical position sensor for a crown
    19.
    发明授权
    Optical position sensor for a crown 有权

    公开(公告)号：US10203662B1

    公开(公告)日：2019-02-12

    申请号：US15714691

    申请日：2017-09-25

    Applicant: Apple Inc.

    Inventor： Chin Han Lin ,  Stephen N. Sweet

    IPC: G04B3/04 ,  G01D5/26 ,  G04G21/00

    Abstract: An electronic device includes an input device having a moveable shaft, a reflective surface, an optical energy transmitter, and optical energy receivers that receive optical energy transmitted by the optical energy transmitter and reflected by the reflective surface. Movement of the moveable shaft changes the optical energy received by the optical energy receivers. The movement or position of the shaft may be determined by analyzing the optical energy received. Detectable movement may include rotation, rotation speed, rotation direction, translation, tilt, displacement, and so on. The optical energy receivers may be configured in concentric rings.

    Interrogating DOE integrity by reverse illumination
    20.
    发明授权
    Interrogating DOE integrity by reverse illumination 有权

    公开(公告)号：US09970845B2

    公开(公告)日：2018-05-15

    申请号：US15019978

    申请日：2016-02-10

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Brian S. Medower ,  Chin Han Lin

    IPC: G01B9/00 ,  G01M11/02 ,  G01J3/18 ,  G01J1/32 ,  G01J3/02 ,  G01J1/02

    CPC classification number: G01M11/02 ,  G01J1/32 ,  G01J3/027 ,  G01J3/18 ,  G01J2001/0276

    Abstract: Optical apparatus includes a primary radiation source, which emits first optical radiation along a first optical axis. A DOE includes at least an entrance surface, upon which the first optical radiation from the primary radiation source is incident, and an exit surface, through which one or more primary diffraction orders of the first optical radiation are emitted from the DOE. At least one secondary radiation source is configured to direct second optical radiation to impinge on the DOE along a second optical axis, which is non-parallel to the first optical axis, causing at least a part of the second optical radiation to be diffracted by the DOE such that one or more secondary diffraction orders of the second optical radiation are emitted through the entrance face of the DOE. At least one detector is configured to sense at least one of the secondary diffraction orders of the second optical radiation.

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