The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Aug. 29, 2019
Apple Inc., Cupertino, CA (US);
Moshe Kriman, Tel Aviv, IL;
Adar Magen, Sunnyvale, CA (US);
Arun Kumar Nallani Chakravartula, San Jose, CA (US);
Zhenbin Ge, San Jose, CA (US);
Gregory A. Cohoon, Sunnyvale, CA (US);
Eamon H. O'Connor, Emeryville, CA (US);
Calvin K. Wong, Cupertino, CA (US);
Colleen F. Mischke, Sunnyvale, CA (US);
Christopher Hu, San Jose, CA (US);
Yazan Z. Alnahhas, Mountain View, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
An optical module includes a diffractive optical element (DOE) with a transparent conductive trace disposed over a surface of the DOE. An emitter is configured to direct a beam of optical radiation through the DOE. Control circuitry is coupled to measure a resistance of the transparent conductive trace and to control operation of the emitter responsively to the resistance.