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:
Dec. 24, 2013
Filed:
Apr. 06, 2011
Yuki Fujii, Saitama, JP;
Mamoru Yoshida, Saitama, JP;
Kazuma Yanagisawa, Saitama, JP;
Tomohiro Saito, Saitama, JP;
Yuki Fujii, Saitama, JP;
Mamoru Yoshida, Saitama, JP;
Kazuma Yanagisawa, Saitama, JP;
Tomohiro Saito, Saitama, JP;
Enplas Corporation, Saitama, JP;
Abstract
In the light flux controlling member (), the angle between an optical path of light output from the light emission center () of a light emitting element () and optical axis Lis θ2. Light is incident on the light flux controlling member () through an input surface and travels inside the light flux controlling member at an angle θ2 with respect to optical axis L. Then, light is output from a light control output surface () at an angle θ3 with respect to optical axis L. The input surface () and the light control output surface () are formed such that, in a range 0<θ1≦θ1max, the relationship between θ1 and θ2 is reversed from θ1<θ2 to θ1>θ2 when θ1 increases, and the relationship between θ1 and θ3 is reversed from θ1<θ3 to θ1>θ3 when θ1 increases.