US Patent No. 10,694,607

ELECTRONIC DEVICES WITH LIGHT SENSOR WAVEGUIDES


Patent No. 10,694,607
Issue Date June 23, 2020
Title Electronic Devices With Light Sensor Waveguides
Inventorship Tingjun Xu, San Jose, CA (US)
Guocheng Shao, Campbell, CA (US)
Lei Yu, Shanghai (CN)
Ove Lyngnes, Carmel Valley, CA (US)
Sunggu Kang, San Jose, CA (US)
Tianbo Sun, Sunnyvale, CA (US)
Xianwei Zhao, Fremont, CA (US)
Xiaoyong Fu, Cupertino, CA (US)
Xingxing Cai, Santa Clara, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 10,694,607

1. An electronic device, comprising:a housing;
an ambient light sensor window;
an ambient light sensor in the housing; and
a light guide in the housing between the ambient light sensor window and the ambient light sensor, wherein the light guide has a core, a metal coating, and a dielectric layer between the metal coating and the core, and wherein the dielectric layer comprises a thin-film interference filter formed from a stack of multiple thin-film coatings.