Accession Number : AD0424950

Title :   MOIRE FRINGE MEASURING SYSTEM FOR FAR INFRARED INTERFEROMETRIC SPECTROMETER,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Loewenstein,E. V.

Report Date : OCT 1963

Pagination or Media Count : 7

Abstract : A morie fringe measuring system is used to monitor the path difference in a far infrared interferometer. The system uses a grating of 10 microns spacing and gives a passage of one fringe for each 5 microns of motion by means of an optical setup originally described by Palmer. A modification of Palmer's system, which utilizes the broad fringes produced with the relatively coarse grating, is described. (Author)

Descriptors :   (*OPTICAL INSTRUMENTS, INTERFEROMETERS), (*INFRARED EQUIPMENT, SPECTRUM ANALYZERS), (*SPECTRUM ANALYZERS, INFRARED EQUIPMENT), OPTICAL EQUIPMENT, OPTICAL PHENOMENA, BIBLIOGRAPHIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE