Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/110737
Kind Code:
A1
Abstract:
[Problem] The present invention addresses the problem of providing a high-durability illumination device in which a wavelength conversion sheet is used, the illumination device being used in a liquid crystal display or the like. The problem is solved by: the illumination device having a point-light source, a wavelength conversion sheet, and a light-amount-reducing member positioned between the point-light source and a wavelength conversion layer; the light-amount reducing member reducing the peak luminance of light irradiated from the point-light source by 10-80% over the light incidence surface of the wavelength conversion sheet, and setting the absorption rate of light having a wavelength of 450 mm measured using an integrating sphere to be 5% or less.
Inventors:
TOYAMA HIROFUMI (JP)
SATAKE RYO (JP)
YONEMOTO TAKASHI (JP)
OBA TATSUYA (JP)
CHIKUSHI NATSURU (JP)
SATAKE RYO (JP)
YONEMOTO TAKASHI (JP)
OBA TATSUYA (JP)
CHIKUSHI NATSURU (JP)
Application Number:
PCT/JP2016/087770
Publication Date:
June 29, 2017
Filing Date:
December 19, 2016
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
F21K9/64; F21S2/00; F21V9/08; F21V9/16; F21V29/502; G02B5/20; H01L33/50; F21Y115/10
Foreign References:
| JP2011089121A | 2011-05-06 | |||
| JP2009140829A | 2009-06-25 | |||
| JPH03208205A | 1991-09-11 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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