Document Type and Number:
Japanese Patent JPS5199021
Kind Code:
A
Abstract:
A color filter-determining apparatus, which indicates the color component to be balanced, has two measuring circuits, each of which contains a pair of photoelectric transducers. One of the photoelectric transducers in each measuring circuit is sensitive to the same primary color and the other transducers are sensitive to different primary colors. The measuring circuits comprise resistance measuring bridges, which are complemented by resistors and diagonally supplied by separate power sources and also diagonally connected to inputs of operational amplifiers, such as sum-and-difference amplifiers.
Inventors:
JIIGUFURIIDO BARUBIIRI
FURANTSU OOBERUTEEGERU
FURANTSU OOBERUTEEGERU
Application Number:
JP11777775A
Publication Date:
September 01, 1976
Filing Date:
October 01, 1975
Export Citation:
Assignee:
DURST AG
International Classes:
G01J3/51; G03B27/73; (IPC1-7): G01J3/46; G03B33/00