Optical filter having filter layer containing infrared...

Details Optical filter having filter layer containing infrared... Optical filter having filter layer containing infrared...

2006-09-19

2006-09-19

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Composite

C252S587000, C252S588000, C359S361000, C359S885000, C359S892000, C430S512000, C430S517000

Reexamination Certificate

active

07108918

ABSTRACT:
An optical filter comprises a transparent support and a filter layer. The filter layer contains a dye and a binder polymer. The dye is in an aggregated form exhibiting an absorption maximum in the wavelength region of 750 to 1,100 nm. The support, the filter layer or an optional layer contains an ultraviolet absorbing agent represented by the formula (I), (II), (III) or the like.

REFERENCES:
patent: 5498345 (1996-03-01), Jollenbeck et al.
patent: 6307671 (2001-10-01), Yabuki
patent: 6515811 (2003-02-01), Ikuhara et al.
patent: 6586057 (2003-07-01), Yabuki
patent: 6680009 (2004-01-01), Harada et al.

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