3618499

Information

• Patent Grant
• 3618499

• References
• Source

• Patent Number

  3,618,499

• Date Filed

  Not available

• Date Issued

  Tuesday, November 9, 1971
  53 years ago

• CPC

  • G02B7/32 - using active means
  • G03B7/006 - setting of both diaphragm and distance
  • G03B7/14 - setting of both shutter and diaphragm aperture being effected so as to give the optimum compromise between depth of field and shortness of exposure

• US Classifications

  • 396 - Photography
  • 352 - Optics: motion pictures