Accession Number : AD0287748

Title :   SURVEY OF THERMAL IMAGING METHODS

Descriptive Note : Final rept.,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : SCHADT,CONRAD ; KELLY,R.L.

Report Date : 01 SEP 1958

Pagination or Media Count : 29

Abstract : Methods of detection of thermal images by nonscanning devices with the ultimate goal a portable device which registers an image produced by small differences in temperature of an object were studied. Radiant energy from an object must produce a latent image on a receiver, in terms of optical inhomogeneity, which can be made visible by direct optical methods. The basic requirements for a thermal imaging device are the following: (1) Temperature resolution sufficient to show differences of one degree centigrade in a black object; (2) Sufficient linear and angular resolution to show these temperature differences at a separation of 0.1 mm on a film as large as 4 x 4; and (3) A characteristic response time which allows formation of the image for an infrared exposure of one second or less. Project studies consisted mainly of theoretical investigations of the capabilities and limitations of various nonscanning systems. Those under consideration have been steady-state, triggered, and isothermal systems. (Author)

Descriptors :   *DETECTORS, *INFRARED IMAGES, *INFRARED RADIATION, *METAL FILMS, *OPTICAL EQUIPMENT, *THERMAL RADIATION, ABSORPTION, DETECTION, HEAT OF FORMATION, MATHEMATICAL ANALYSIS, OPTICAL IMAGES, PHOSPHORESCENT MATERIALS, SURFACE TARGETS, TEMPERATURE, TESTS, THIN FILMS (STORAGE DEVICES), WAXES

Distribution Statement : APPROVED FOR PUBLIC RELEASE