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:
Mar. 10, 2015
Filed:
Aug. 29, 2011
Applicants:
Toshitake Kitagawa, Kanagawa, JP;
Makoto Sakai, Kanagawa, JP;
Inventors:
Toshitake Kitagawa, Kanagawa, JP;
Makoto Sakai, Kanagawa, JP;
Assignee:
Toshiba Lighting & Technology Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 5/16 (2006.01); H01J 61/40 (2006.01); H01K 1/26 (2006.01); H01K 1/30 (2006.01); G02B 3/00 (2006.01); F21K 99/00 (2010.01); F21V 5/00 (2006.01); F21V 5/04 (2006.01); F21V 7/00 (2006.01); F21V 19/00 (2006.01); F21V 3/02 (2006.01); F21Y 101/02 (2006.01); F21V 13/02 (2006.01);
U.S. Cl.
CPC ...
G02B 3/00 (2013.01); F21K 9/1355 (2013.01); F21K 9/50 (2013.01); F21V 5/008 (2013.01); F21V 5/04 (2013.01); F21V 7/0091 (2013.01); F21V 19/0055 (2013.01); F21V 3/02 (2013.01); F21Y 2101/02 (2013.01); F21V 13/02 (2013.01);
Abstract
A lens includes a first lens section and a second lens section, which are integrally formed. The first lens section is formed in a hemispherical shell shape including a first recess opened toward one side of an optical axis direction in which light from a light source is made incident. The second lens section is formed in a hemispherical shell shape including a second recess opened toward the other side of the optical axis direction.