PATENT COVER GRAPHIC


United States Patent 4,040,096
August 2, 1977

Flying Spot Scanner With Runout Correction
Gary K. Starkweather

Filed October 28, 1975
Image of US PATENT 4,040,096

Abstract of the Disclosure

A flying spot scanning system is provided by utilizing reflected light from a multifaceted rotating polygon which is then directed to the scanned medium. A light source illuminates a portion of the mirrored sides of the polygon during each scanning cycle, to provide a desired sequence of spot scanning. In each scanning cycle, information is transmitted to the scanned medium by modulating the light from the light source in accordance with a video signal. An optical convolution of elements is selected in combination with the light source to assure a uniform spot size throughout the scan width on the scanned medium. One of these elements is a cylindrical lens placed in the optical path between the polygon and the scanned medium for allowing a wide variance in runout tolerance of the scanning system.
Figure descriptions: cover graphic

  • a side perspective view of the utilization of the cylindrical correction lens which is an integral part of the flying spot scanning system in accordance with the invention.

 Citations [54]:
  
1,406,445 02/1922 Culver 3,574,469 04/1971 Emerson 2,258,311 10/1941 Adams 3,675,016 07/1972 Blaisdell 2,898,176 08/1959 McNaney 3,750,189 07/1973 Fleischer 2,976,362 03/1961 Stamps 3,005,916 10/1961 Lentze
National Museum of American History
HomeSearchChip TalkChip FunPatentsPeoplePicturesCreditsCopyrightComments