Title:
NEAR-INFRARED ABSORBING FILTER
Document Type and Number:
WIPO Patent Application WO/2005/031405
Kind Code:
A1
Abstract:
Disclosed is a near-infrared absorbing filter which is excellent in heat resistance, light resistance and wet heat resistance, and does not cause much change in hue. The near-infrared absorbing filter comprises a resin layer which contains a metal-containing indoaniline compound represented by the following general formula (I). (I) (In the formula (I), M represents a metal atom; ring A represents a nitrogen-containing aromatic ring; ring B represents a benzene ring or a pyridine ring; R represents an alkyl group which may be substituted, an alkenyl group which may be substituted, an aryl group which may be substituted or the like; R1 and R2 independently represent a monovalent group; h and k independently represent an integer of 0-4; R3 and R4 independently represent a hydrogen atom, an alkyl group which may have a substituent or an aryl group which may have a substituent; z represents a monovalent or divalent anion; m represents 2 or 3; and n represents 1 or 2.)
Inventors:
OZAWA TETSUO (JP)
TAKAHASHI YUKIKO (JP)
TAKAHASHI YUKIKO (JP)
Application Number:
PCT/JP2004/014187
Publication Date:
April 07, 2005
Filing Date:
September 28, 2004
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
OZAWA TETSUO (JP)
TAKAHASHI YUKIKO (JP)
OZAWA TETSUO (JP)
TAKAHASHI YUKIKO (JP)
International Classes:
G02B5/22; (IPC1-7): G02B5/22; C09K3/00; G09F9/00
Foreign References:
| JPH0527113A | 1993-02-05 | |||
| JPH04332688A | 1992-11-19 | |||
| JP2002131530A | 2002-05-09 | |||
| JPH11101912A | 1999-04-13 | |||
| JPH08337586A | 1996-12-24 | |||
| JP2004102062A | 2004-04-02 |
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
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