×

Color sensor employing optical fiber bundles with varied diameters

  • US 5,229,841 A
  • Filed: 07/10/1991
  • Issued: 07/20/1993
  • Est. Priority Date: 07/10/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A color sensing system for the recognition of a colored object comprising:

  • a plurality of electronic light emitters, each emitting light in a predetermined narrow-band range of wavelengths;

    a receiving randomized optical fiber bundle having a first and second end for conducting a reflected light from a colored object;

    said first end directed at said colored object;

    an electronic light receiver means coupled to said second end of said receiving randomized optical fiber bundle for converting said reflected light into an electrical signal; and

    a plurality of light transmitting randomized optical fiber bundles, each bundle coupled to a respective one of said light emitters and having a cross-sectional area approximately inversely proportional to the product of a light power level of said respective light emitter multiplied by the spectral response of said electronic light receiver, said emitting light conducted through said transmitting randomized optical fiber bundle and illuminating said colored object causing light to be reflected therefrom where said transmitting randomized optical fiber bundle is substantially constant in effective cross-sectional area over its length; and

    an electronic processing means connected to said electronic light receiver means for making a color recognition determination based on said electrical signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×