Abstract

The paper describes an instrument for taking thermal photographs utilizing infrared radiation passively emitted by objects at ambient temperature. The instrument consists of an 8-in. radiometer utilizing thermistor infrared detectors and an imaging attachment. A glow modulator forms a thermal photograph on Polaroid or conventional film.

Quantitative analysis of thermal photographs is described, and several examples of thermal photographs are given.

© 1959 Optical Society of America

High-Speed Infrared Radiometers*

Robert W. Astheimer and Eric M. Wormser
J. Opt. Soc. Am. 49(2) 179-183 (1959)

Brightness of Fine Detail in Ground Photography

P. D. Carman and H. Brown
J. Opt. Soc. Am. 49(6) 629-636 (1959)

Doped Silicon and Germanium Photoconductors as Targets for Infrared Television Camera Tubes

R. W. Redington and P. J. van Heerden
J. Opt. Soc. Am. 49(10) 997-1001 (1959)

Optimum Half-Shade Angle in Polarizing Instruments

Shinya Inoué and Charles J. Koester
J. Opt. Soc. Am. 49(6) 556-559 (1959)

Spectral Emissivity of Solids in the Infrared at Low Temperatures

Dwight Weber
J. Opt. Soc. Am. 49(8) 815-820 (1959)