| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical filter which has steep light absorptions in respective wavelength regions of 200-450 nm, 450-750 nm, and 750-1,100 nm, and which is suitable for an image display device. SOLUTION: The optical filter is characterized in that it includes at least a kind of cyanine compound represented by general formula (I). COPYRIGHT: (C)2009,JPO&INPIT
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