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:
May. 22, 2018
Filed:
Jun. 20, 2014
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Toshihiro Tsumori, Echizen, JP;
Toshihiko Tsukatani, Echizen, JP;
Kazuhiro Wataya, Echizen, JP;
Takehisa Minowa, Echizen, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); C09K 11/77 (2006.01); F21K 9/60 (2016.01);
U.S. Cl.
CPC ...
H01L 33/50 (2013.01); C09K 11/7706 (2013.01); C09K 11/7715 (2013.01); C09K 11/7774 (2013.01); F21K 9/60 (2016.08); H01L 33/502 (2013.01);
Abstract
An outdoor luminaire comprising a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a phosphor layer disposed forward of the LED chip in its emission direction is provided. The phosphor layer comprises a phosphor of the formula: LuAlO:Cewhich is activated with up to 1 mol % of Ce relative to Lu, the phosphor being dispersed in a resin. In scotopic and mesopic vision conditions, the luminaire produces illumination affording brighter lighting, higher visual perception and brightness over a broader area.