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:
Jan. 21, 2025
Filed:
Jan. 11, 2024
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventors:
Yen-Chang Chu, Hsin-Chu County, TW;
Cheng-Nan Tsai, Hsin-Chu County, TW;
Chih-Ming Sun, Hsin-Chu County, TW;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 15/06 (2024.01); G08B 17/107 (2006.01); G08B 29/18 (2006.01); G01N 15/00 (2006.01); G01N 15/075 (2024.01);
U.S. Cl.
CPC ...
G01N 15/06 (2013.01); G08B 17/107 (2013.01); G08B 29/18 (2013.01); G01N 2015/0046 (2013.01); G01N 15/075 (2024.01);
Abstract
There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.