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Imaging device having improved blue response

  • US 4,051,374 A
  • Filed: 06/04/1976
  • Issued: 09/27/1977
  • Est. Priority Date: 06/04/1976
  • Status: Expired due to Term
First Claim
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1. In a silicon imaging device of the type adapted to convert a visible light image directed into a face thereof to electrical signal form and having a sensitivity characteristic that generally increases with wavelength over the visible spectral range, the improvement comprising:

  • a dye-bearing layer superposed over said face, the dye thereof being of a type that fluoresces by absorbing short wavelength visible light and in response thereto emits longer wavelength visible light which is within the operative range of said imaging device, said layer being substantially transparent to green and red light whereby short visible wavelength response is effectively upgraded without degrading green or red response.

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