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:
Dec. 05, 2017
Filed:
Jul. 29, 2015
Applicant:
Voxtel, Inc., Beaverton, OR (US);
Inventors:
George Williams, Portland, OR (US);
Andrew Huntington, Aloha, OR (US);
Assignee:
Voxtel, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); G01J 1/18 (2006.01);
U.S. Cl.
CPC ...
G01J 1/18 (2013.01); G01J 1/44 (2013.01);
Abstract
The output of an avalanche photodiode (APD) comprises a 'photocurrent' component comprising photon initiated events resulting from the interaction of photons with the APD and a 'dark current' component comprising dark carrier events arising in the APD even when the APD is not exposed to light. Differences in the pulse height distributions of photon initiated events and dark carrier initiated events are used to statistically discriminate between photocurrent and dark current components of APD output.