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:
Aug. 03, 2021
Filed:
Aug. 07, 2020
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventor:
Masaki Koyama, Hino, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/38 (2018.01); F21V 7/00 (2006.01); G02F 1/29 (2006.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
F21V 9/38 (2018.02); F21V 7/0008 (2013.01); G02F 1/292 (2013.01); F21Y 2115/30 (2016.08);
Abstract
A lighting apparatus includes: a laser light source emitting laser light; a liquid crystal device that transmits the laser light from the laser light source and diffracts the laser light; a phosphor unit that receives laser light from the liquid crystal device, converts a wavelength of the laser light to emit illumination light, the phosphor unit including a first phosphor of a first color and a second phosphor of a second color differing from the first color. The liquid crystal device controls an angle of the laser light and selects one of the first phosphor or the second phosphor.