INVESTIGATION OF THERMAL IMAGING TECHNIQUES
AVCO CORP WILMINGTON MA RESEARCH AND ADVANCED DEVELOPMENT DIV
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Experiments and measurements which can be performed successfully in image furnaces are listed together with the necessary special instrumentation. The restrictions imposed by basic principles of image furnaces upon their operation are discussed, and methods to overcome these restrictions are proposed. Sample holders were designed and built which permit operation in controlled atmospheres with rotation of the sample on, or perpendicular to the optical axis, and which are suitable for the measurement of electrical properties at high temperatures. A fast-action, on-off shutter was designed to be operated by compressed air and vacuum. A new guidance control system was built having greater sensitivity and precision than the previous model. An experimental setup was constructed for the direct measurement of solar reflection coefficients. A 36-inch paraboloidal reflector was fabricated by a new method. A method was developed which makes it possible to calculate the temperature dependence of a property from measurements of the uneven flux distribution f the image at several peak flux values.
- Infrared Detection and Detectors