Color photosensor utilizing color filters

Details Color photosensor utilizing color filters Color photosensor utilizing color filters

1987-02-25

1987-10-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350311, G02B 520

Patent

active

047000805

ABSTRACT:
A color photosensor which includes a plurality of closely arranged sensor units. Each sensor includes a color filter provided at a position corresponding to that of a photoreceptor. The color filter comprises at least one of coloring matter layers selected from the following groups (A), (B) and (C):
(A) A red coloring matter layer including, as a main component, perylenetetracarboxylic acid derivatives selected from the following structural formulas (I) and (II): ##STR1## where R.sub.1 denotes hydrogen, an alkyl group or an allyl group; (B) a green coloring matter layer including, as a main component, phthalocyanine coloring matter, a combination of phthalocyanine coloring matter and isoindolenone coloring matter, or a combination of phthalocyanine coloring matter and authraquinone coloring matter; and
(C) a blue coloring matter layer including, as a main component, phthalocyanine coloring matter, or a combination of phthalocyanine coloring matter and quinacridon coloring matter.

REFERENCES:
patent: 4600833 (1986-07-01), Shibata et al.

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