3885878

Information

• Patent Grant
• 3885878

• References
• Source

• Patent Number

  3,885,878

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1975
  49 years ago

• CPC

  • G01J3/02 - Details
  • G01J3/0218 - using optical fibers
  • G01J3/50 - using electric radiation detectors
  • G01J3/465 - taking into account the colour perception of the eye; using tristimulus detection
  • G01J3/51 - using colour filters
  • G01J3/513 - having fixed filter-detector pairs
  • G01J2003/467 - Colour computing
  • G01N2021/4742 - comprising optical fibres
  • G01N2021/4754 - Diffuse illumination

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy