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:
Mar. 31, 2026
Filed:
May. 12, 2022
Applicant:
Pixart Imaging Inc., Hsin-Chu City, TW;
Inventors:
Guo-Zhen Wang, Hsin-Chu City, TW;
Hung-Ching Lai, Hsin-Chu City, TW;
Assignee:
PixArt Imaging Inc., Hsin-Chu City, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2022.01); G06T 7/00 (2017.01); H04N 23/56 (2023.01);
U.S. Cl.
CPC ...
G06T 7/0002 (2013.01); G06T 7/97 (2017.01); H04N 23/56 (2023.01);
Abstract
An optical device, comprising: a processing circuit; a light source, configured to emit light to a surface; and an optical sensor, configured to sense optical data generated based on reflected light or scattering light of the light. The processing circuit computes a dirt level of the surface according to the optical data.