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. 24, 2020
Filed:
Jun. 23, 2016
Applicant:
Dexerials Corporation, Tokyo, JP;
Inventor:
Naoki Hanashima, Tokyo, JP;
Assignee:
DEXERIALS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G03B 21/14 (2006.01); G02B 3/04 (2006.01); F21V 5/04 (2006.01); G02B 27/09 (2006.01); H04N 9/31 (2006.01);
U.S. Cl.
CPC ...
G03B 21/14 (2013.01); F21V 5/04 (2013.01); G02B 3/04 (2013.01); G02B 5/02 (2013.01); G02B 27/0955 (2013.01); H04N 9/3152 (2013.01);
Abstract
There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve flat diffusion angle distribution characteristics while reducing a high-order diffraction component, the diffuser plate including: a single lens group positioned on a surface of a transparent substrate, in which curvature radii of respective single lenses composing the single lens group are varied as a whole, and peak positions of the respective single lenses are located irregularly, and a lens surface shape of at least one of the single lenses in the single lens group satisfies Equation 1 and Equation 2.