Accession Number : ADD013949

Title :   Thermodynamics Infrared Imaging Sensor.

Descriptive Note : Patent, Filed 4 Mar 85, patented 29 Nov 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Metcalf, Travis W ; Moran, Steven E

Report Date : 29 Nov 1988

Pagination or Media Count : 11

Abstract : An infrared imaging system is presented wherein a visual image of a scene being viewed is obtained from the thermal energy radiated from said scene. The thermal energy radiated is focused onto a plurality of means for absorbing energy from the infrared radiation, specifically a two-dimensional array of gas cells with the front end being a rigid infrared transparent window, the sides being rigid, and rear ends being flexible membranes. Infrared radiation absorbed by the cells causes changes in the thermodynamic pressure within each cell and consequent expansion of the flexible membrane on the rear end of each cylindrical cell. The deflection of these flexible membranes is monitored and measured by either a laser interferometer system or a solid state pressure sensing system. Measurement of this deflection represents the amount of infrared radiation received at each of the plurality of gas cells. Patents. Pat. Cl. 250-332. (jes)

Descriptors :   *INFRARED DETECTORS, ARRAYS, CELLS, CYLINDRICAL BODIES, DEFLECTION, ENERGY ABSORBERS, FLEXIBLE MATERIALS, GAS CELLS, INFRARED EQUIPMENT, INFRARED IMAGES, INFRARED RADIATION, INFRARED WINDOWS, LASERS, MEMBRANES, OPTICAL IMAGES, OPTICAL INTERFEROMETERS, PATENTS, PRESSURE, RIGIDITY, THERMAL RADIATION, THERMODYNAMICS, TRANSPARENCE, TWO DIMENSIONAL, VISION

Subject Categories : Miscellaneous Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE