Title:
LIGHTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2015/129116
Kind Code:
A1
Abstract:
This lighting apparatus is provided with a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a fluorescent material-containing resin layer disposed on the front of the blue LED chip in the light emission direction. The fluorescent material-containing resin layer is obtained by mixing and dispersing a LuAg fluorescent material, which is represented by the formula Lu3Al5O12:Ce3+ and in which the Ce activation rate is 2 mol.% or lower relative to Lu, and a double fluoride fluorescent material represented by the formula A2(B1-xMnx)F6 (in the formula, A is at least one type of element selected from among the group consisting of Li, Na, K and Cs, B is at least one type of element selected from among the group consisting of Si, Ti, Nb, Ge and Sn, and x is an integer that falls within the range 0.001 ≤ x ≤ 0.1) in a resin. The present invention is capable of achieving a higher sense of brightness, high visibility and a sense of brightness across a wide range under scotopic conditions or mesopic conditions with an emitted light color close to black body radiation.
Inventors:
WATAYA KAZUHIRO (JP)
TSUMORI TOSHIHIRO (JP)
TSUKATANI TOSHIHIKO (JP)
MINOWA TAKEHISA (JP)
TSUMORI TOSHIHIRO (JP)
TSUKATANI TOSHIHIKO (JP)
MINOWA TAKEHISA (JP)
Application Number:
PCT/JP2014/081576
Publication Date:
September 03, 2015
Filing Date:
November 28, 2014
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
F21S2/00; C09K11/00; C09K11/08; C09K11/61; C09K11/66; C09K11/67; C09K11/80; F21S8/08; F21Y101/02
Foreign References:
| JP2011233511A | 2011-11-17 | |||
| JP2012062444A | 2012-03-29 | |||
| JP2013502711A | 2013-01-24 | |||
| JP2005008844A | 2005-01-13 |
Other References:
See also references of EP 3115677A4
Attorney, Agent or Firm:
KOJIMA Takashi et al. (JP)
Takashi Kojima (JP)
Takashi Kojima (JP)
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