Accession Number : AD0907498

Title :   Nonsilver High Resolution Media/Recorder.

Descriptive Note : Final rept. 15 Jul 70-15 Aug 72,

Corporate Author : HUGHES RESEARCH LABS MALIBU CA

Personal Author(s) : Sullivan, Paul A.

Report Date : JAN 1973

Pagination or Media Count : 316

Abstract : A direct electron beam recorder for nucleation film has been built and tested. This recorder overcomes many of the disadvantages of CRT on film recorders by providing a high resolution black-on-white image that is available for viewing one second after recording. Immediate viewing of the film record eliminates the need for a CRT display and its refresh-storage for viewing images from line-scan reconnaissance sensors. Nucleation film is developed by the selective condensation of zinc vapor on nucleation sites produced by electron exposure. It is developed in vacuum, adjacent to the recording electron beam. The image has a contrast of 8:1 for an expoosure of 2 x 10 to the 11th power electrons/sq cm. The resolution of the film is 500 lp/mm (determined with ultraviolet light exposure). To record line-scan reconnaissance video at 100 to 1500 lines/s requires this electron beam recorder/display to operate with film speeds of typically 0.5 cm/s. This contrasts with a previous nucleation film EBR that recorded high resolution television images at 60 fields/s on 35-mm wide film transported at 43 cm/s. The present recorder/display has an image viewing area 6-cm wide by 22-cm high where the 70-mm wide film moves from top to bottom.

Descriptors :   *RECORDING SYSTEMS), (*ELECTRON BEAMS, (*NUCLEATION, RECORDING SYSTEMS), PHOTOGRAPHIC RECORDING SYSTEMS, PHOTOGRAPHIC FILM, VAPOR PLATING, ZINC, REAL TIME, IMAGES, DISPLAY SYSTEMS, BROADBAND, INFRARED RADIATION, VIDEO SIGNALS, PHOTOGRAPHIC RECONNAISSANCE, AERIAL RECONNAISSANCE, AIRBORNE, INFRARED SCANNING, INFRARED DETECTORS, SOURCES.

Subject Categories : Recording and Playback Devices
      Photography
      Military Intelligence

Distribution Statement : APPROVED FOR PUBLIC RELEASE