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Title:
NEAR-INFRARED RAY CUT FILTER
Document Type and Number:
WIPO Patent Application WO/2014/084167
Kind Code:
A1
Abstract:
This near-infrared ray cut filter has the following spectral transmittance characteristics according to the incidence angle of light. When the incidence angle of light is 0°, at least a part of the wavelength range from 450 nm to less than 550 nm has a portion in which the difference in transmittance from the average transmittance in the wavelength range of 450-700 nm is 1.65% or greater. When the incidence angle of light is 40°, at least a part of the wavelength range from 450 nm to less than 550 nm has a portion in which the difference in transmittance from the average transmittance in the wavelength range of 450-700 nm is 3.5% or greater. Also, when the incidence angle of light is 40°, in all of the wavelength range from 450 nm to less than 550 nm, the difference in transmittance from the average transmittance in the wavelength range of 450-700 nm is no greater than 7.0%.

Inventors:
YOSHIHARA Akihiko (LIMITED 5-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
MURAKAMI Takaaki (LIMITED 5-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
Application Number:
JP2013/081639
Publication Date:
June 05, 2014
Filing Date:
November 25, 2013
Export Citation:
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Assignee:
ASAHI GLASS COMPANY, LIMITED (5-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 05, 〒1008405, JP)
International Classes:
G02B5/28; G02B5/26; G03B11/00; H01L27/14
Domestic Patent References:
WO2013042738A12013-03-28
WO2013183557A12013-12-12
Foreign References:
JP2006012371A2006-01-12
JP2008158036A2008-07-10
JP2008092532A2008-04-17
JP2008508545A2008-03-21
JP2007183525A2007-07-19
JP2013156460A2013-08-15
JP2013178338A2013-09-09
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (PMO Kanda Tsukasa-machi, 8-1 Kanda Tsukasa-machi 2-chome, Chiyoda-k, Tokyo 48, 〒1010048, JP)
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