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US 4,677,289 AGranted
Color sensor
AssigneeKabushiki Kaisha Toshiba
InventorsHidetoshi Nozaki, Toshikazu Adachi
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Abstract
A color sensor comprises a cell group comprised of a plurality of photovoltaic cells having a different photosensing wavelength area and being electrically, series-connected, a connection circuit electrically connected across both terminals of the cell group to provide an electrically closed circuit, and a sensing circuit adapted to sense a voltage across both terminals of the respective photovoltaic cell and to evaluate a color component of light incident on the color sensor.
Claims17
A color sensor comprising:
- a plurality of photovoltaic cells each having a different photosensing wavelength area, and electrically connected together in a series configuration;
- connecting means electrically connected across both end terminals of said series-connected photovoltaic cells to provide an electrically closed circuit;
- and
- sensing means for sensing a voltage generated across the respective photovoltaic cells, and for evaluating colors of light incident on the color sensor.
1 more element
Dependencies are inferred from the claim text.