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SOLID STATE MULTI-COLOR SENSOR

  • US 3,717,724 A
  • Filed: 02/02/1971
  • Issued: 02/20/1973
  • Est. Priority Date: 02/02/1971
  • Status: Expired due to Term
First Claim
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1. A sensor responsive to an optical image of a given spectrum of illumination projected thereon, for producing electrical signals representative of that image in accordance with predetermined, corresponding wavelength regions of the spectrum, comprising:

  • a multi-layer semiconductor sandwich structure, each layer thereof comprising semiconducting material exhibiting selective absorption of a corresponding one of the predetermined wavelength regions of the spectrum, means defining and providing elemental image responsive areas in each of said layers, and electrically conductive means providing selective electrical connection to said elemental areas of each said layers for deriving an electrical signal from each said layer representing the intensity of illumination incident thereon in accordance with the image and for the corresponding wavelength region of the spectrum.

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