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:
Feb. 19, 2019
Filed:
Mar. 23, 2016
Applicant:
Hoya Corporation, Tokyo, JP;
Inventors:
Hiroaki Fujii, Tokyo, JP;
Sachiko Nasu, Tokyo, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02B 23/24 (2006.01); G02B 6/32 (2006.01); G02B 6/00 (2006.01); A61B 1/06 (2006.01); A61B 1/07 (2006.01); A61B 1/002 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 23/2469 (2013.01); A61B 1/002 (2013.01); A61B 1/0669 (2013.01); A61B 1/07 (2013.01); G02B 6/00 (2013.01); G02B 6/0006 (2013.01); G02B 6/32 (2013.01); G02B 23/2461 (2013.01);
Abstract
A light source optical system includes a light source, an optical system that collects light incident from the light source; and a light guide rod having a reflecting inner surface for guiding light received through an entrance port to an exit port by total internal reflection, the reflecting inner surface being gradually tapered, towards a light guide axis in the direction of the exit port, in one of an entire region defined from the entrance port to the exit port, and a region defined from a midway point between the entrance port and the exit port to the exit port.