3880528

Information

• Patent Grant
• 3880528

• References
• Source

• Patent Number

  3,880,528

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • H01L31/0232 - Optical elements or arrangements associated with the device
  • G01J1/04 - Optical or mechnical part supplementary adjustable parts
  • G01J1/0411 - using focussing or collimating elements
  • G01J1/0474 - Diffusers
  • G01J1/0271 - Housings; Attachments or accessories for photometers
  • G01J2001/0485 - Cosinus correcting or purposely modifying the angular response of a light sensor

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy
  • 257 - Active solid-state devices