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    Time-of-flight sensing using an addressable array of emitters
    1.
    发明授权
    Time-of-flight sensing using an addressable array of emitters 有权

    公开(公告)号：US11852727B2

    公开(公告)日：2023-12-26

    申请号：US16769346

    申请日：2017-12-18

    Applicant: Apple Inc.

    Inventor： Arnaud Laflaquière ,  Marc Drader

    IPC: G01S17/89 ,  G01S17/894 ,  G01S7/481 ,  G01S17/10 ,  G01S7/483 ,  G01S7/4865

    CPC classification number: G01S17/89 ,  G01S7/483 ,  G01S7/4815 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/894

    Abstract: Optical sensing apparatus (20) includes an array (28) of emitters (50), which emit pulses of optical radiation at different, respective times in response to a control input applied to the array. A receiver (26) includes a plurality of detectors (40), which output signals indicative of times of arrival of photons at the detectors. Optics (30, 32) project the optical radiation from the emitters onto respective locations in a scene and image the respective locations onto corresponding pixels of the receiver. A controller (44) controls the emitters to emit the output pulses in a predefined spatio-temporal sequence, and collects and processes the signals output by corresponding pixels in synchronization with the spatio-temporal sequence so as to measure respective times of flight of the pulses to and from the respective locations in the scene.

    Increasing VCSEL projector spatial resolution
    3.
    发明授权
    Increasing VCSEL projector spatial resolution 有权

    公开(公告)号：US11899136B2

    公开(公告)日：2024-02-13

    申请号：US17877955

    申请日：2022-07-31

    Applicant: Apple Inc.

    Inventor： Arnaud Laflaquière

    IPC: G01S7/481 ,  G02B26/00 ,  G02B26/08 ,  G01S17/08 ,  G02B26/10 ,  H01S5/42 ,  H01S5/042

    CPC classification number: G01S7/4817 ,  G01S17/08 ,  G02B26/004 ,  G02B26/0875 ,  G02B26/10 ,  H01S5/042 ,  H01S5/423

    Abstract: An optical device includes a radiation source, which is configured to emit a beam of light, and a scanning cell positioned to receive the beam of light. The scanning cell includes transparent entrance and exit faces, at least one of the faces including a flexible membrane. A transparent fluid is contained between the entrance and exit faces, so that the beam enters the transparent fluid through the entrance face and exits the transparent fluid through the exit face. At least one actuator is coupled to the flexible membrane, and configured, responsively to an applied electrical signal, to apply an asymmetrical deformation to the flexible membrane, thereby deflecting the beam by refraction in the transparent fluid.

    VCSELs with improved optical and electrical confinement
    5.
    发明授权
    VCSELs with improved optical and electrical confinement 有权

    公开(公告)号：US11381060B2

    公开(公告)日：2022-07-05

    申请号：US15841345

    申请日：2017-12-14

    Applicant: APPLE INC.

    Inventor： Arnaud Laflaquière ,  Marc Drader ,  Christophe Vérove

    IPC: H01S5/183 ,  H01S5/028 ,  H01S5/22 ,  H01S5/343 ,  H01S5/20 ,  H01S5/042

    Abstract: An optoelectronic device includes a semiconductor substrate with a first set of epitaxial layers formed on an area of the substrate defining a lower distributed Bragg-reflector (DBR) stack. A second set of epitaxial layers formed over the first set defines a quantum well structure, and a third set of epitaxial layers, formed over the second set, defines an upper DBR stack. At least the third set of epitaxial layers is contained in a mesa having sides that are perpendicular to the epitaxial layers. A dielectric coating extends over the sides of at least a part of the mesa that contains the third set of epitaxial layers. Electrodes are coupled to the epitaxial layers so as to apply an excitation current to the quantum well structure.

    Combining light-emitting elements of differing divergence on the same substrate
    6.
    发明授权
    Combining light-emitting elements of differing divergence on the same substrate 有权

    公开(公告)号：US11309453B2

    公开(公告)日：2022-04-19

    申请号：US17031955

    申请日：2020-09-25

    Applicant: Apple Inc.

    Inventor： Arnaud Laflaquière ,  Marc Drader

    IPC: H01L33/08 ,  H01L27/15 ,  H01L33/00 ,  H01L33/46

    Abstract: An optoelectronic device includes a semiconductor substrate and a monolithic array of light-emitting elements formed on the substrate. The light-emitting elements include a first plurality of first emitters, configured to emit respective first beams of light with a first angular divergence, at respective first positions in the array, and a second plurality of second emitters, configured to emit respective second beams of light with a second angular divergence that is at least 50% greater than the first angular divergence, at respective second positions in the array.

    SPAD array with gated histogram construction
    8.
    发明申请
    SPAD array with gated histogram construction 审中-公开
    具有门控直方图构造的SPAD阵列

    公开(公告)号：US20170052065A1

    公开(公告)日：2017-02-23

    申请号：US14830760

    申请日：2015-08-20

    Applicant: Apple Inc.

    Inventor： Anup K. Sharma ,  Arnaud Laflaquière ,  Gennadiy A. Agranov ,  Gershon Rosenblum ,  Shingo Mandai

    IPC: G01J1/42 ,  G01J1/44

    CPC classification number: G01S7/4865 ,  G01S7/483 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/107 ,  G01S17/89 ,  G04F10/005 ,  H01L31/02027

    Abstract: A sensing device includes a first array of sensing elements, which output a signal indicative of a time of incidence of a single photon on the sensing element. A second array of processing circuits are coupled respectively to the sensing elements and comprise a gating generator, which variably sets a start time of the gating interval for each sensing element within each acquisition period, and a memory, which records the time of incidence of the single photon on each sensing element in each acquisition period. A controller controls the gating generator during a first sequence of the acquisition periods so as to sweep the gating interval over the acquisition periods and to identify a respective detection window for the sensing element, and during a second sequence of the acquisition periods, to fix the gating interval for each sensing element to coincide with the respective detection window.

    Abstract translation: 感测装置包括感测元件的第一阵列，其输出指示感测元件上的单个光子的入射时间的信号。 处理电路的第二阵列分别耦合到感测元件，并且包括选通发生器，其在每个采集周期内可变地设置每个感测元件的选通间隔的开始时间，以及记录存储器的入射时间 在每个采集周期中每个感测元件上的单个光子。 控制器在采集周期的第一序列期间控制门控发生器，以便在采集周期上扫描门控间隔，并且识别感测元件的相应检测窗口，并且在采集周期的第二序列期间， 每个感测元件的选通间隔与相应的检测窗口一致。

    Integrated optical transceiver
    10.
    发明申请
    Integrated optical transceiver 有权

    公开(公告)号：US20230085957A1

    公开(公告)日：2023-03-23

    申请号：US17866618

    申请日：2022-07-18

    Applicant: Apple Inc.

    Inventor： Nicolas Hotellier ,  Arnaud Laflaquière ,  Christophe Verove ,  Fei Tan ,  Siddharth Joshi

    IPC: H01S5/026 ,  H01S5/042 ,  H01S5/02326 ,  H01S5/42

    Abstract: An optoelectronic device includes a base chip, including a silicon die having a photodiode disposed at its front surface and a first anode contact and a first cathode contact disposed on the front surface. A laser diode driver circuit on the silicon die supplies an electrical drive signal between the first anode contact and the first cathode contact. An emitter chip includes a III-V semiconductor die, which is mounted with its front side facing toward the front surface of the silicon die. A second anode contact and a second cathode contact are disposed on the front side of the III-V semiconductor die in electrical communication with the first anode contact and the first cathode contact. A VCSEL is disposed on the front side of the III-V semiconductor die in coaxial alignment with the photodiode and receives the drive signal from the second anode contact and the second cathode contact.

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