Title:
NEAR-INFRARED CUT FILTER GLASS AND PROCESS FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2012/018026
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a near-infrared cut filter glass which has few bubble defects and exhibits high weather resistance. The near-infrared cut filter glass consists of a fluorophosphate-based glass which comprises, in cation percent, 25 to 55% of P5+, 1 to 25% of Al3+, 1 to 50% of R+ (wherein R+ represents the total amount of Li+, Na+ and K+), 1 to 50% of R2+ (wherein R2+ represents the total amount of Mg2+, Ca2+, Sr2+, Ba2+ and Zn2+), 1 to 10% of Cu2+ and 0 to 3% of Sb3+, and comprises, in anion percent, 35 to 95% of O2- and 5 to 65% of F- and which has a β-OH value of 0.001 to 0.1mm-1.
Inventors:
KONDO YUKI (JP)
OHKAWA HIROYUKI (JP)
OHARA SEIKI (JP)
OHKAWA HIROYUKI (JP)
OHARA SEIKI (JP)
Application Number:
PCT/JP2011/067702
Publication Date:
February 09, 2012
Filing Date:
August 02, 2011
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
KONDO YUKI (JP)
OHKAWA HIROYUKI (JP)
OHARA SEIKI (JP)
KONDO YUKI (JP)
OHKAWA HIROYUKI (JP)
OHARA SEIKI (JP)
International Classes:
C03C3/247; G02B5/22
Foreign References:
| JP2004083290A | 2004-03-18 | |||
| JP2001048583A | 2001-02-20 | |||
| JPH10114529A | 1998-05-06 | |||
| JP2001080933A | 2001-03-27 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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Claims: