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:
Jan. 06, 2015
Filed:
Mar. 07, 2013
Applicant:
Fujifilm Corporation, Minato-ku Tokyo, JP;
Inventor:
Osamu Iwasaki, Ashigarakami-gun, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/04 (2006.01); F21V 8/00 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0041 (2013.01); G02B 6/0046 (2013.01); G02B 6/005 (2013.01); G02F 1/133606 (2013.01); G02B 6/0051 (2013.01); G02B 6/0053 (2013.01); G02B 6/088 (2013.01);
Abstract
The light guide plate has at least two layers which are superposed on each other in the direction almost perpendicular to the light exit surface and contain the scattering particles at different particle concentrations, the scattering particles are polydisperse particles including a mixture of particles with different particle sizes, and the combined particle concentrations in each portion of the light guide plate is different by changing the thicknesses of the first layer and the second layer in the direction almost perpendicular to the exit surface.