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Title:
OPTICAL FILTER, MULTIPLEX-OPTICAL FILTER, AND LIGHT-EMITTING DEVICE AND ILLUMINATION SYSTEM USING SUCH FILTERS
Document Type and Number:
WIPO Patent Application WO/2019/225423
Kind Code:
A1
Abstract:
This optical filter (10) is provided with a colloidal crystal layer (12) comprising: a plurality of particles (14) containing an inorganic material and/or a resin material; and a binder (16) disposed between the plurality of particles (14). The optical filter (10) reflects part of light within a wavelength range of at least 300 nm and less than 800 nm. The multiplex-optical filter (20, 20A, 20B, 20C, 20D, 20E, 20F) is provided with multiple units of the optical filter (10). A light-emitting device (30) is provided with the optical filters (10) and a light source (31). Part of primary light (L1) given off by the light source (31) transmits through the optical filter (10).

Inventors:
SHIGITANI RYOSUKE
FUJII SHUNPEI
Application Number:
PCT/JP2019/019257
Publication Date:
November 28, 2019
Filing Date:
May 15, 2019
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02B5/26; F21S2/00; F21V7/28; F21V9/20; F21V9/32; G02B5/20
Domestic Patent References:
WO2016186158A12016-11-24
Foreign References:
JP2017003843A2017-01-05
JP2006292821A2006-10-26
JP2007029775A2007-02-08
JP2017091866A2017-05-25
JP2014086394A2014-05-12
JP2006287024A2006-10-19
JPS6183502A1986-04-28
US20150316694A12015-11-05
US20120293858A12012-11-22
US20110108779A12011-05-12
JP2010060617A2010-03-18
JP2018100776A2018-06-28
JP2018213637A2018-11-14
Other References:
See also references of EP 3805823A4
Attorney, Agent or Firm:
ITO Masakazu et al. (JP)
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