公开(公告)号：US20250093200A1

公开(公告)日：2025-03-20

申请号：US18792161

申请日：2024-08-01

Applicant: Apple Inc.

Inventor： Po-Chieh Hung

IPC: G01J1/42 ,  G01J1/02 ,  H04N23/51 ,  H04N23/71

Abstract: An electronic device may include an ambient light sensor. An angular-response controller may overlap the ambient light sensor and may have regions with adjustable transparency to control an angular response of the ambient light sensor. In particular, the angular-response controller may include two light modulator layers, such as liquid crystal layers. Each of the light modulator layers may have transparent portions and opaque portions. To allow on-axis light to pass through to the ambient light sensor while blocking off-axis light, the transparent portions of the two layers may be aligned, and the opaque portions of the two layers may be aligned. In contrast, to allow off-axis light while blocking on-axis light, the opaque portions of the two layers may be offset. The light modulator layers may be adjusted in response to measurements from the ambient light sensor or other sensors in the device, such as motion or orientation sensors.

公开(公告)号：US20210041288A1

公开(公告)日：2021-02-11

申请号：US16533078

申请日：2019-08-06

Applicant: Apple Inc.

Inventor： Po-Chieh Hung ,  Nicholas C. Lewty

IPC: G01J1/04 ,  H01L31/0232 ,  H01L31/167 ,  G01J1/02

Abstract: An electronic device may include a light sensor system. The light sensor system may have a light source that emits light and a light detector that receives the emitted light after the emitted light has interacted with an external object. The light source may include a ring of light-emitting diodes or other light-emitting devices surrounding the light detector or may have light-emitting devices that are surrounded by a ring-shaped light detector. Polarizer structures may be incorporated into the light sensor system. Control circuitry in the device may control the light source so that different polarizations of light are emitted at different times. The control circuitry may process signals from the light detector that are gathered under different polarizations to discriminate between specular and non-specular reflections from the external object.

公开(公告)号：US11473968B2

公开(公告)日：2022-10-18

申请号：US16533078

申请日：2019-08-06

Applicant: Apple Inc.

Inventor： Po-Chieh Hung ,  Nicholas C. Lewty

IPC: G01J1/04 ,  G01J1/02 ,  H01L31/167 ,  H01L31/0232 ,  G01J3/02 ,  G01J3/50 ,  G01J3/46

Abstract: An electronic device may include a light sensor system. The light sensor system may have a light source that emits light and a light detector that receives the emitted light after the emitted light has interacted with an external object. The light source may include a ring of light-emitting diodes or other light-emitting devices surrounding the light detector or may have light-emitting devices that are surrounded by a ring-shaped light detector. Polarizer structures may be incorporated into the light sensor system. Control circuitry in the device may control the light source so that different polarizations of light are emitted at different times. The control circuitry may process signals from the light detector that are gathered under different polarizations to discriminate between specular and non-specular reflections from the external object.

公开(公告)号：US11308846B2

公开(公告)日：2022-04-19

申请号：US16818945

申请日：2020-03-13

Applicant: Apple Inc.

Inventor： Po-Chieh Hung ,  Zhen Zhang

IPC: G09G3/20 ,  G09G3/34

Abstract: An electronic device may have a camera that captures images of objects that are illuminated by ambient light. Some ambient light sources may not render the colors of objects faithfully. To detect low quality ambient lighting conditions and to correct for these conditions, control circuitry in the electronic device gathers ambient light measurements from a color ambient light sensor. The measurements are used to produce an ambient light spectral power distribution. The ambient light spectral power distribution can be applied to a series of test color samples to produce responses. Responses can also be produced by applying a reference illuminant to the test color samples. These responses can then be processed to generate a color rendering index or other color rendering metric for the ambient light and can be used to create a color correction matrix to correct the color of the captured images.

公开(公告)号：US10785384B2

公开(公告)日：2020-09-22

申请号：US15717733

申请日：2017-09-27

Applicant: Apple Inc.

Inventor： Po-Chieh Hung ,  Prashanth S. Holenarsipur ,  Serhan O. Isikman

IPC: H04N5/225 ,  H04N1/60 ,  H04N5/58 ,  G03B17/08 ,  H04N5/232 ,  H04M1/18 ,  H04N9/73 ,  H04N9/04 ,  H04M1/725

Abstract: A submersible electronic device such as a waterproof cellular telephone may be provided with an image sensor. The image sensor may capture images of underwater objects. Control circuitry in the submersible electronic device may adjust image contrast and color balance based on information from sensors and other information. The electronic device may have an ambient light sensor. The ambient light sensor may be a color ambient light sensor and may be used in measuring ambient lighting conditions above water and underwater. A depth sensor may be used in measuring the depth of the image sensor and other components of the electronic device underwater. Information on the depth of the image sensor, information on the distance of an underwater object to the image sensor, and angular orientation information for the electronic device and image sensor may be used in color balancing an image.