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. 30, 2023
Filed:
Jun. 11, 2020
Applicant:
Google Llc, Mountain View, CA (US);
Inventors:
Assignee:
GOOGLE LLC, Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G01R 15/04 (2006.01); G01R 19/10 (2006.01); G01R 27/26 (2006.01); G01R 31/52 (2020.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0149 (2013.01); G01R 15/04 (2013.01); G01R 19/10 (2013.01); G01R 27/26 (2013.01); G01R 31/52 (2020.01); G02B 6/0083 (2013.01); G02B 2027/0167 (2013.01);
Abstract
A combiner lens system includes a lens and a lightguide in stack with the lens. The lightguide carries one or more electrically conductive traces. A detector circuit is electrically coupled to the one or more electrically conductive traces to form an electrical circuit. The detector circuit monitors the electrical circuit for an open circuit or a short circuit and generates an output signal that is indicative of a state of the electrical circuit.