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. 28, 2019
Filed:
Oct. 03, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Naoki Kohara, Kawasaki, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/44 (2006.01); G01J 3/02 (2006.01); G01N 21/65 (2006.01); H01S 3/00 (2006.01); H01S 3/108 (2006.01); H01S 3/23 (2006.01); G01J 3/433 (2006.01);
U.S. Cl.
CPC ...
G01J 3/0297 (2013.01); G01J 3/0208 (2013.01); G01J 3/0218 (2013.01); G01J 3/0224 (2013.01); G01J 3/0262 (2013.01); G01J 3/433 (2013.01); G01J 3/44 (2013.01); G01N 21/65 (2013.01); H01S 3/0078 (2013.01); H01S 3/1086 (2013.01); H01S 3/2391 (2013.01); G01N 2021/655 (2013.01); G01N 2021/656 (2013.01);
Abstract
A noise reduction apparatus includes a first delaying/combining unit configured to output first and second pulse light beams, and a second delaying/combining unit configured to branch the first pulse light beam into two pulse light beams to output third and fourth pulse light beams and branch the second pulse light beam into two pulse light beams to output fifth and sixth pulse light beams.