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Color measuring spectrophotometer

  • US 3,935,436 A
  • Filed: 04/24/1973
  • Issued: 01/27/1976
  • Est. Priority Date: 04/24/1973
  • Status: Expired due to Term
First Claim
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1. A digital, abridged spectrophotometer comprising:

  • a detecting head with a housing defining a roughly spherical, reflective internal surface, a light source mounted for illuminating said internal surface, a viewing port for receiving a sample image to be analyzed, a plurality of photo-responsive devices each mounted for receiving light over the whole of said sort, a plurality of light filters each removing incident light except from a different band and each mounted so that output light is incident on one of said photoresponsive devices, anddigital computer means for determining the electrical conditions of said photo-responsive devices and calculating color values.

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