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. 07, 2025
Filed:
Apr. 15, 2022
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventors:
Cheng-Nan Tsai, Hsin-Chu County, TW;
Yen-Chang Chu, Hsin-Chu County, TW;
Chih-Ming Sun, Hsin-Chu County, TW;
Chi-Chih Shen, Hsin-Chu County, TW;
Kuo-Hsiung Li, Hsin-Chu County, TW;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/47 (2006.01); G01N 33/00 (2006.01); G08B 17/107 (2006.01); G01N 21/53 (2006.01);
U.S. Cl.
CPC ...
G01N 21/4738 (2013.01); G01N 33/0027 (2013.01); G08B 17/107 (2013.01); G01N 21/53 (2013.01); G01N 2291/0217 (2013.01);
Abstract
There is provided an optical machine of a smoke detector including a substrate, a light source, a light sensor and a light blocking member. The light source and the light sensor are arranged on the substrate in a first direction. The light blocking member is arranged upon the light source and blocks a part of an emission angle of the light source in the first direction far away from the light sensor.