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    Reference Switch Architectures for Noncontact Sensing of Substances
    4.
    发明申请
    Reference Switch Architectures for Noncontact Sensing of Substances 有权

    公开(公告)号：US20210018432A1

    公开(公告)日：2021-01-21

    申请号：US17063483

    申请日：2020-10-05

    申请人： Apple Inc.

    发明人： Miikka M. Kangas ,  Mark Alan Arbore ,  David I. Simon ,  Michael J. Bishop ,  James W. Hillendahl ,  Robert Chen

    IPC分类号： G01N21/27 ,  G01N21/35 ,  G01N21/47 ,  G01J3/32 ,  G01J3/36 ,  G01J3/433 ,  G01J3/447 ,  G01J3/02 ,  G01J3/42

    摘要： This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.

    Electronic Devices Having Infrared Blocking Light Guides
    6.
    发明申请
    Electronic Devices Having Infrared Blocking Light Guides 审中-公开

    公开(公告)号：US20190094069A1

    公开(公告)日：2019-03-28

    申请号：US16038916

    申请日：2018-07-18

    申请人： Apple Inc.

    发明人： Tingjun Xu ,  Avery P. Yuen ,  James W. Hillendahl ,  Ligang Wang ,  Ove Lyngnes ,  Sunggu Kang ,  Xianwei Zhao ,  Xingxing Cai

    IPC分类号： G01J1/16 ,  G01J1/04 ,  G09G3/34 ,  H05B37/02 ,  G02B6/02

    摘要： An electronic device may be provided with a display. An opaque layer may be formed on an inner surface of a display cover layer in an inactive area of the display. An optical component window may be formed from the opening. A light guide may be aligned with the optical component window and may be used to guide light from the optical component window to an optical component such as an ambient light sensor. The light guide may have a core surrounded by a cladding. The core may be formed from a material such as blue glass that absorbs infrared light and that transmits visible light. Particles of titanium dioxide or other high-refractive-index material may be incorporated into the core to enhance the refractive index of the core. Thin-film interference filters may be formed on the light guide to enhance infrared light blocking.