Electronic device having transreflective optical sensors

    公开(公告)号:US10306350B1

    公开(公告)日:2019-05-28

    申请号:US16043027

    申请日:2018-07-23

    申请人: Apple Inc.

    IPC分类号: H04R1/10 G01S17/08

    摘要: An electronic device may include an optical proximity sensor system. The optical proximity sensor system may be a transreflective optical proximity sensor system having a light emitter that emits light into a light-emitting region and a light detector that detects light in a light-detecting region. Control circuitry in the device can use the transreflective optical proximity sensor system to detect objects in an object detection region formed where the light-emitting region and light-detecting region overlap. The electronic device may be a pair of headphones in which housing structures such as housing walls define ear cup cavities. Speakers may be provided in the ear cups of the headphones to provide sound to the ear cup cavities. The transreflective optical proximity sensor system can detect the presence of a user's ear in an ear cup cavity.

    Electronic Devices With Skin Sensors

    公开(公告)号:US20220225006A1

    公开(公告)日:2022-07-14

    申请号:US17149552

    申请日:2021-01-14

    申请人: Apple Inc.

    IPC分类号: H04R1/10 G02B5/28 A61B5/00

    摘要: A wearable electronic device such as an earbud, wristwatch, or other device may be provided with a skin sensor. The skin sensor may use optical measurements to detect the presence of skin adjacent to the electronic device. The sensor may have first and second light-emitting devices such as infrared devices that emit light at respective first and second infrared light wavelengths. Reflected light is monitored by a photodetector. Control circuitry can initiate or pause audio playback or take other actions in response to determining from the reflected light measurements that skin is present. The sensor may have a thin-film interference filter or other optical structure that overlaps the first and second light-emitting devices to narrow the angular spread of light emitted from the skin sensor. This reduces tilt sensitivity and helps enhance skin sensor accuracy.