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:
Sep. 03, 2019
Filed:
Aug. 04, 2017
Applicant:
Santec Corporation, Aichi, JP;
Inventors:
Yasuki Sakurai, Aichi, JP;
Shinichiro Asada, Aichi, JP;
Assignee:
Santec Corporation, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/42 (2006.01); G02B 6/38 (2006.01);
U.S. Cl.
CPC ...
G02B 6/4204 (2013.01); G02B 6/3845 (2013.01);
Abstract
A detection device for detecting a power of an input light is provided with a light-receiving module that outputs an electrical signal according to a power of an input light received at a light-receiving surface and an optical system that collimates and guides to the light-receiving surface the input light from the outside. Moreover, this detection device is provided with a structure that decreases an incidence angle of the input light at an interface between the optical system and the light-receiving surface.