Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/256307
Kind Code:
A1
Abstract:
This lighting device is an LED device component obtained by combining a plurality of phosphor-containing LED devices, wherein the phosphor-containing LED devices include a blue LED element, and a phosphor selected from an SAE-based phosphor, an LAG-based phosphor, and a silicate-based phosphor, and emit light of which the reflected light from PPC paper having an ISO whiteness of 82±3% has a correlated color temperature of 4500 to 7500 K and a color deviation duv of -0.01 to 0.02, wherein the spectral distribution of the emitted light includes: a first peak indicating a maximum intensity at a wavelength of 420 to 480 nm, and a second peak, which is the maximum peak at a wavelength of 481 to 580 nm, of which the ratio of the peak intensity to the intensity of the first peak is 40 to 70%, and of which the full width at half maximum is at least equal to 50; and a valley indicating an intensity of 5 to 17% of the intensity of the first peak, between the first peak and the second peak.
Inventors:
MASHIKO NAOYA (JP)
ISHIGURO EIJI (JP)
KAWAGUCHI TAKERU (JP)
WATANUKI KEIICHI (JP)
MURAMATSU KEIICHI (JP)
ISHIGURO EIJI (JP)
KAWAGUCHI TAKERU (JP)
WATANUKI KEIICHI (JP)
MURAMATSU KEIICHI (JP)
Application Number:
PCT/JP2021/021484
Publication Date:
December 23, 2021
Filing Date:
June 07, 2021
Export Citation:
Assignee:
ASAHI RUBBER INC (JP)
NATIONAL UNIV CORPORATION SAITAMA UNIV (JP)
NATIONAL UNIV CORPORATION SAITAMA UNIV (JP)
International Classes:
F21K9/60; F21S2/00; H01L33/50; F21Y105/16; F21Y115/10
Foreign References:
| JP2019125577A | 2019-07-25 | |||
| JP2014075186A | 2014-04-24 | |||
| JP2019135756A | 2019-08-15 |
Attorney, Agent or Firm:
EGAWA, Masaru (JP)
Download PDF:
Previous Patent: METHOD FOR SEPARATING SODA LIGNIN
Next Patent: FILM FORMATION METHOD AND PLASMA TREATMENT DEVICE
Next Patent: FILM FORMATION METHOD AND PLASMA TREATMENT DEVICE