Accession Number : ADD006650

Title :   ROACH Generator.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Shreve,James S

Report Date : 01 Feb 1979

Pagination or Media Count : 15

Abstract : A method and apparatus for generating holograms and similar phase/amplitude filters of the type referred to as ROACH, without using a computer. A light beam having the phase/amplitude information to be recorded is generated with an optical processor and an optical-electronic interface determines the phase and amplitude of the beam at a matrix of points in a plane and generates electrical signals corresponding thereto. The signals are used to control the intensities of different guns of a color CRT, and a frame of color film is exposed with the pattern displayed on the CRT. The developed frame comprises the hologram or spatial filter. (Author)

Descriptors :   *Patent applications, *Holography, *Optical processing, Spatial filtering, Optical filters, Phase modulation, Amplitude modulation, Fourier transformation, Display systems, Color television tubes, Photographic recording systems, Color photography

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE