Title:
照明方法及び発光装置
Document Type and Number:
Japanese Patent JP6584030
Kind Code:
B2
Abstract:
An object of the present invention is to provide an illumination method with which improvements in the appearance of colors perceived by a human at an illuminance of 5 lx to 150 lx are achieved in terms of visibility, the color appearance of chromatic colors perceived by a human, and a feeling of brightness, a color appearance or an object appearance as perceived by a person, will be as natural, vivid, highly visible, and comfortable as though perceived outdoors in a high-illuminance environment, regardless of scores of various color rendition metric, as well as a light-emitting device for implementing the illumination method. Light emitted from the light-emitting device illuminates an object such that light measured at a position of the object satisfies specific requirements. A feature of the light-emitting device is that light emitted by the light-emitting device in a main radiant direction satisfies specific requirements.
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Inventors:
Hideyoshi Horie
Application Number:
JP2018116709A
Publication Date:
October 02, 2019
Filing Date:
June 20, 2018
Export Citation:
Assignee:
Citizen Electronics Co., Ltd.
International Classes:
F21V9/38; F21K9/60; F21S2/00; H01K5/00; H01L33/00; H05B37/02
Domestic Patent References:
| JP2012506615A | ||||
| JP2012113958A | ||||
| JP2000231905A |
Foreign References:
| WO2011024818A1 |
Attorney, Agent or Firm:
Shinichi Sanuki
Takeshi Niwa
Toshiaki Shimoda
Yu Anzai
Takeshi Niwa
Toshiaki Shimoda
Yu Anzai