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:
Aug. 02, 2016
Filed:
Jan. 26, 2015
Enplas Corporation, Saitama, JP;
Hiroshi Takatori, Saitama, JP;
Masao Yamaguchi, Saitama, JP;
Enplas Corporation, Saitama, JP;
Abstract
A surface light source device () includes substrate (), a plurality of light emitting devices () disposed at constant intervals on substrate (), and light diffusion plate () disposed substantially parallel to substrate () over the plurality of light emitting devices (). Light emitting device () includes light emitting element () and light flux controlling member (). A luminous intensity of light from light emitting device () is gradually increased as an angle relative to optical axis (LA) becomes larger in an angular range from a direction along optical axis (LA) of light emitting device () to a direction of emission of light with the highest luminous intensity from light emitting device (). Surface light source device () satisfies three Equations of H/P≦0.2, L/P>1, and I/I>6.