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 (JP)
MURAKAMI TAKAAKI (JP)
MURAKAMI TAKAAKI (JP)
Application Number:
PCT/JP2013/081639
Publication Date:
June 05, 2014
Filing Date:
November 25, 2013
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
G02B5/28; G02B5/26; G03B11/00; H01L27/14
Domestic Patent References:
| WO2013042738A1 | 2013-03-28 | |||
| WO2013183557A1 | 2013-12-12 |
Foreign References:
| JP2006012371A | 2006-01-12 | |||
| JP2008158036A | 2008-07-10 | |||
| JP2008092532A | 2008-04-17 | |||
| JP2008508545A | 2008-03-21 | |||
| JP2007183525A | 2007-07-19 | |||
| JP2013156460A | 2013-08-15 | |||
| JP2013178338A | 2013-09-09 |
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, p. c. (JP)
Patent business corporation cherry tree international patent firm (JP)
Patent business corporation cherry tree international patent firm (JP)
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