Title:
発光装置及び照明装置
Document Type and Number:
Japanese Patent JP6677323
Kind Code:
B2
Abstract:
A light emitting device (1) includes: three or more light emitting units (10, 20, 30) that individually include blue light emitting element, a wavelength range of the blue light emitting element accommodated in respective packages being different from each other. The light emitting device mixes output lights from the light emitting units (10, 20, 30) to output white light of a predetermined chromaticity. In an xy chromaticity diagram, the chromaticity of the output light from each of light emitting units (10, 20, 30) is located at a distance from the predetermined chromaticity. The difference between the chromaticity of the output light from each of the light emitting units (10, 20, 30) and the predetermined chromaticity is not greater than 0.04.
Inventors:
Takaya Ueno
Murofushi Hitoshi
Murofushi Hitoshi
Application Number:
JP2018564863A
Publication Date:
April 08, 2020
Filing Date:
October 30, 2017
Export Citation:
Assignee:
Sanken Electric Co., Ltd.
International Classes:
F21V9/38; F21V9/32; F21V19/00; H01L33/50
Domestic Patent References:
| JP2016219519A | ||||
| JP2008034188A | ||||
| JP2011003594A | ||||
| JP2012518293A | ||||
| JP2011192738A |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu