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 10375786 B1

PDFFull Text
Date of Patent:
Aug. 06, 2019

Filed:

Jan. 18, 2019

White light source system

Applicants:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Toshiba Materials Co., Ltd., Yokohama-Shi, JP;

Inventors:

Masahiko Yamakawa, Yokohama, JP;

Noriaki Yagi, Yokohama, JP;

Kumpei Kobayashi, Yokohama, JP;

Assignees:

Kabushiki Kaisha Toshiba, Minato-Ku, JP;

Toshiba Materials Co., Ltd., Yokohama-Shi, JP;

Attorney:

Burr & Brown, PLLC

Primary Examiner:

Minh D A

Int. Cl.
CPC ...
F21V 9/00 (2018.01); H05B 37/02 (2006.01); H05B 33/08 (2006.01); F21S 2/00 (2016.01); H01L 33/00 (2010.01); H01L 33/50 (2010.01); H01L 25/075 (2006.01); H01L 33/56 (2010.01); H01L 33/54 (2010.01); F21Y 113/13 (2016.01); F21W 131/405 (2006.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); F21S 2/00 (2013.01); H01L 25/0753 (2013.01); H01L 33/00 (2013.01); H01L 33/50 (2013.01); H01L 33/504 (2013.01); H01L 33/54 (2013.01); H01L 33/56 (2013.01); H05B 33/0857 (2013.01); H05B 37/02 (2013.01); H05B 37/0281 (2013.01); F21W 2131/405 (2013.01); F21Y 2113/13 (2016.08); F21Y 2115/10 (2016.08); H01L 33/507 (2013.01);
Abstract

According to one embodiment, there is provided a white light source system. P(λ), B(λ) and V(λ) satisfy an equation (1) below in a wavelength range of 380 nm to 780 nm. The white light source system satisfies an expression (2) below in a wavelength range of 400 nm to 495 nm: where P(λ) is a light emission spectrum of white light, B(λ) is a light emission spectrum of blackbody radiation of a color temperature correspond to a color temperature of the white light, and V(λ) is a spectrum of a spectral luminous efficiency.

Find Patent Forward Citations

Yamakawa, Masahiko. (2019). White light source system (U.S. Patent No. 10375786). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10375786

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…