Accession Number : ADD005796

Title :   Complex Photodichroic Spatial Filter.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Bocker,Richard P

Report Date : 29 Aug 1978

Pagination or Media Count : 13

Abstract : A complex spatial filter is provided by the combination of two dichroic crystal plates, one quarter waveplate, and two linear polarizers. The complex spatial filter consists of real and imaginary parts, both of which can have either a positive or negative sign and the structure is capable of eraseably recording varying degrees of absorbency which exhibit polarization discrimination in a desired format that can then be used to process the Fourier transform of a light beam containing desired information. (Author)

Descriptors :   *Patents, *Optical filters, *Polarizing filters, *Dichroism, *Color centers, Wave analyzers, Laser beams, Fourier transformation, Potassium chloride, Polarizers

Subject Categories : Crystallography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE