18792161. Ambient Light Sensors With Controlled Angular Responses (Apple Inc.)
Contents
Ambient Light Sensors With Controlled Angular Responses
Organization Name
Inventor(s)
Po-Chieh Hung of Sunnyvale CA US
Ambient Light Sensors With Controlled Angular Responses
This abstract first appeared for US patent application 18792161 titled 'Ambient Light Sensors With Controlled Angular Responses
Original Abstract Submitted
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.
