logo

For the Inventor, By the Inventor

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.:

US 11274801 B1

PDFFull Text
Date of Patent:
Mar. 15, 2022

Filed:

Jan. 27, 2021

Illumination device using coherent light source

Applicant:

Dai Nippon Printing Co., Ltd., Tokyo, JP;

Inventors:

Makio Kurashige, Tokyo, JP;

Shumpei Nishio, Tokyo, JP;

Assignee:

DAI NIPPON PRINTING CO., LTD., Tokyo, JP;

Attorney:

Michael Best & Friedrich LLP

Primary Examiner:

Karabi Guharay

Int. Cl.
CPC ...
G02B 5/00 (2006.01); G02B 5/32 (2006.01); F21S 41/16 (2018.01); F21S 41/00 (2018.01); B60Q 1/14 (2006.01); G02B 26/10 (2006.01); H01S 5/00 (2006.01); F21S 41/30 (2018.01); F21S 41/675 (2018.01); F21S 41/20 (2018.01); F21V 23/00 (2015.01); H01S 5/40 (2006.01); H01S 5/062 (2006.01); H01S 5/02251 (2021.01); B60Q 1/04 (2006.01); G02B 27/14 (2006.01); G02B 27/30 (2006.01);
U.S. Cl.
CPC ...
F21S 41/16 (2018.01); B60Q 1/14 (2013.01); F21S 41/00 (2018.01); F21S 41/285 (2018.01); F21S 41/30 (2018.01); F21S 41/675 (2018.01); F21V 23/003 (2013.01); G02B 5/32 (2013.01); G02B 26/10 (2013.01); H01S 5/005 (2013.01); H01S 5/0071 (2013.01); B60Q 1/04 (2013.01); G02B 27/141 (2013.01); G02B 27/149 (2013.01); G02B 27/30 (2013.01); H01S 5/02251 (2021.01); H01S 5/06216 (2013.01); H01S 5/4087 (2013.01);
Abstract

The invention provides a structurally simple illumination device capable of safely illuminating the desired area with coherent light. An illumination device () includes a laser light source () (coherent light source), a light diffuser (), and a light scanning device (). The laser light source () emits laser beam L (coherent light). The light diffuser () diffuses the laser beam L emitted from the laser light source (). The light scanning device () guides the laser beam L to one of the illumination subareas constituting part of an illumination area, thereby scanning the laser beam L radiated from the light diffuser () across the illumination area.

Find Patent Forward Citations

Loading…