PROBLEM TO BE SOLVED: To provide a weather/light resistance testing machine capable of accurately measuring optical deterioration and thermal deterioration separately.;SOLUTION: (1) The weatherable optical testing machine has a sample surface temperature precise control means equipped with the partial blower (A) wherein a hot air passage having a heater and a cooling air passage having a cooler are arranged to a discharge port and the wind going toward the upper part of a test tank from the lower part thereof is sent to the surface of the sample, an air-conditioning valve (B) for selectively sending a wind to the hot air passage and a cool air passage and a temperature sensor (C) for controlling the surface temperature of the sample provided to a sample holder and (2) the surface temperature of the sample, the temperature of a black sensor and the temperature in the tank are individually controlled to precisely recognize the optical deterioration and thermal deterioration of the sample.;COPYRIGHT: (C)2005,JPO&NCIPI
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