SPAD array with gated histogram construction
    2.
    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.

    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。

    ANTI-REFLECTIVE COATINGS FOR PHOTODIODES OF IMAGE SENSOR PIXELS

    公开(公告)号:US20220375986A1

    公开(公告)日:2022-11-24

    申请号:US17738364

    申请日:2022-05-06

    Applicant: Apple Inc.

    Abstract: An image sensor pixel includes a photodiode, a lens positioned in a light-receiving path of the photodiode, and an anti-reflective coating disposed between the photodiode and the lens and including four layers. The four layers include alternating layers of a higher refractive index material and a lower refractive index material. The higher refractive index material has a refractive index that is higher than the lower refractive index material.

    Image Flare Detection Using Asymmetric Pixels

    公开(公告)号:US20200029035A1

    公开(公告)日:2020-01-23

    申请号:US16460883

    申请日:2019-07-02

    Applicant: Apple Inc.

    Abstract: A method for processing an image includes obtaining a set of pixel values captured from a pixel array during an image capture frame. The set of pixel values includes pixel values for a set of asymmetric pixels having different directional asymmetries. The method further includes detecting, using the pixel values for at least the asymmetric pixels and the different directional asymmetries of the asymmetric pixels, a directionality of image flare; and processing an image defined by the set of pixel values in accordance with the detected directionality of image flare. In some embodiments, image flare may be distinguished from noise using the set of pixel values.

    Controlling lens misalignment in an imaging system

    公开(公告)号:US10205937B2

    公开(公告)日:2019-02-12

    申请号:US15498507

    申请日:2017-04-27

    Applicant: Apple Inc.

    Abstract: An imaging method includes imaging a scene using an imaging system, which includes an array of radiation sensing elements, including first sensing elements with symmetrical angular responses and second sensing elements with asymmetrical angular responses, interspersed among the first sensing elements, and optics configured to focus radiation from the scene onto the array. The method further includes processing first signals output by the first sensing elements in order to identify one or more areas of uniform irradiance on the array, and processing second signals output by the second sensing elements that are located in the identified areas, in order to detect a misalignment of the optics with the array.

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