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Improvement of thermal properties imaging system of skin by changing ambient radiation temperature in stepwise fashion

Proposes a system to make images on skin thermal properties such as emissivity, thermal inertia and emissivity-corrected thermography. The properties are estimated to measure the time course of temperature during changing ambient temperature in stepwise fashion. Discharge from huge capacitances to an electrical heater which is controlled by their temperature can heat the ambient radiation from 20 to 40/spl deg/C within 0.2 sec. The time course of temperature on the skin surface is almost linear against square root of time, which fits the theory. We can conclude that the system is practically applicable.