Title:
OPTICAL FILTER AND ITS APPLICATIONS, AND PORPHYRIN COMPOUND USED IN OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2006/046497
Kind Code:
A1
Abstract:
[MEANS OF SOLVING PROBLEMS] An optical filter characterized by containing at least one kind of tetra-acenaphtoporphyrin compound. The tetra-acenaphtoporphyrin compound has its absorption maximum in a 530nm-570nm wavelength region, and a ratio between an absorption coefficient at 525nm and that at 550nm is preferably at least 1.2. Also, a ratio of light transmittance at 550nm to that at 525nm is preferably up to 85%. [EFFECTS] The optical filter can eliminate unnecessary light mainly existing in a 520nm-700nm region and is excellent in durability. A display unit using this optical filter can improve 'contrast in a bright location', and improve 'color purity of luminescent color'.
Inventors:
MINAMI HIROMI (JP)
OKAMURA TOMOYUKI (JP)
KAGAYAMA AKIFUMI (JP)
SUZUKI RIHOKO (JP)
FUJII KENICHI (JP)
OI RYU (JP)
NISHIMOTO TAIZO (JP)
MOROHASHI MAKOTO (JP)
MISAWA TSUTAMI (JP)
FUKUDA SHIN (JP)
OKAMURA TOMOYUKI (JP)
KAGAYAMA AKIFUMI (JP)
SUZUKI RIHOKO (JP)
FUJII KENICHI (JP)
OI RYU (JP)
NISHIMOTO TAIZO (JP)
MOROHASHI MAKOTO (JP)
MISAWA TSUTAMI (JP)
FUKUDA SHIN (JP)
Application Number:
PCT/JP2005/019475
Publication Date:
May 04, 2006
Filing Date:
October 24, 2005
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
MINAMI HIROMI (JP)
OKAMURA TOMOYUKI (JP)
KAGAYAMA AKIFUMI (JP)
SUZUKI RIHOKO (JP)
FUJII KENICHI (JP)
OI RYU (JP)
NISHIMOTO TAIZO (JP)
MOROHASHI MAKOTO (JP)
MISAWA TSUTAMI (JP)
FUKUDA SHIN (JP)
MINAMI HIROMI (JP)
OKAMURA TOMOYUKI (JP)
KAGAYAMA AKIFUMI (JP)
SUZUKI RIHOKO (JP)
FUJII KENICHI (JP)
OI RYU (JP)
NISHIMOTO TAIZO (JP)
MOROHASHI MAKOTO (JP)
MISAWA TSUTAMI (JP)
FUKUDA SHIN (JP)
International Classes:
C07D487/22; G02B5/00; G02B5/22; G02B5/30
Foreign References:
| JP2004258514A | 2004-09-16 | |||
| JP2002138203A | 2002-05-14 | |||
| JP2005120303A | 2005-05-12 | |||
| JPH09197301A | 1997-07-31 | |||
| JPH02113202A | 1990-04-25 | |||
| JP2003207608A | 2003-07-25 | |||
| JPH05163408A | 1993-06-29 | |||
| JPH10166732A | 1998-06-23 |
Attorney, Agent or Firm:
Suzuki, Shunichiro (Gotanda Yamazaki Bldg. 6F 13-6, Nishigotanda 7-chom, Shinagawa-ku Tokyo 31, JP)
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