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:
Sep. 13, 2022
Filed:
Mar. 22, 2019
Applicant:
Nitto Denko Corporation, Osaka, JP;
Inventor:
Kari Rinko, Helsinki, FI;
Assignee:
NITTO DENKO CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 (2006.01); F21V 8/00 (2006.01); G02B 5/02 (2006.01); G09F 13/18 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0036 (2013.01); G02B 5/0247 (2013.01); G02B 6/0023 (2013.01); G02B 6/0031 (2013.01); G02B 6/0043 (2013.01); G02B 6/0055 (2013.01); G02B 6/0063 (2013.01); G02B 6/002 (2013.01); G02B 6/4243 (2013.01); G02B 6/4259 (2013.01); G09F 2013/1804 (2013.01);
Abstract
With a simple configuration, an optical device having an in-coupling function to a lightguide is provided. The optical device includes a light guiding layer; and in-coupling optics provided integrally with the light guiding layer to couple light from a light source to an incident edge of the light guiding layer. The in-coupling optics include an optical element that is convex toward the incident edge and an air cavity provided between the optical element and the incident edge.