Accession Number : AD0164407
Title : Birefringent Optical Correlator.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Hileman,Ronald E. ; Campbell,James T.
Report Date : 30 JAN 1973
Pagination or Media Count : 5
Abstract : The patent describes a birefringent optical correlator having a light source, a pair of ultrasonic delay lines and a photosensitive device. The birefringent optical correlator does not contain apertures or polarizers between the delay lines and therefore passes the entire image therethrough. A polarizer is located before the first delay line and after the second delay line in order to separate the modulated or diffracted light. Thus, the birefringent optical correlator requires substantially little source light intensity and mechanical alignment.
Descriptors : *Correlators, *Patents, Optical equipment, Acoustic delay lines, Acoustic materials, Acoustooptics, Optical materials
Subject Categories : Optics
Distribution Statement : APPROVED FOR PUBLIC RELEASE