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:
Nov. 29, 2016
Filed:
Oct. 23, 2013
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
MITSUBISHI RAYON CO., LTD., Tokyo, JP;
Abstract
Provided is a plate-type light guide () in which two opposing main surfaces are set as light emitting surfaces (A,B) and at least one side-edge surface is set as a light incidence surface (). In such a light guide, a light emitting mechanism () is provided in at least one region of at least one main surface; the haze value is 3% or lower in the region where the light emitting mechanism is provided; when a perfect diffuse light enters through at least one light incidence surface (), a maximum emission angle (θA, θB), at which maximizes the intensity of emitted light () from the main surface is in a range from −60 degrees to +60 degrees with respect to a normal line to the main surface; and the utilization efficiency of emitted light is 15% or greater.