Nondestructive thermal analysis with portable pyroelectric television camera

Le résumé fourni par la source

Pyroelectric Vidicons have been commercially available for approximately nineteen years. In 1975 I.S.I. Group, Inc. began manufacturing a television camera system incorporating the Pyroelectric Vidicon tube. Until this time most systems had been custom fabricated, for special applications. The early camera systems were large, bulky, and difficult to use. These initial camera designs were updated to make them more user oriented and to generally simplify their operation. The original Thermal Imaging systems were comprised of a camera head (incorporating the PEV tube) , a camera control unit (incorporating all the necessary control electronics) , connected by a camera control cable. These systems found many different applications, but had been restricted to areas where 35 watts could be obtained from 110 Volt, 60Hz AC power. Within the past few years a new camera system has been developed. This camera system is completely portable, battery powered, and light weight. This camera system now permits thermal analysis in areas that are remotely located. These camera systems produce images which are displayed on standard television equipment. The PEV detector requires no cooling, either liquid or thermoelectric. These camera systems respond only to thermal energy radiated by an object and no signal is produced by visible light.

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