The present invention relates to a microwave interactive susceptor structure for the microwave heating of food products. A method includes receiving from one or more users a plurality jobs. A number of heat-radiating fins are attached or formed on each heat sink. Accordingly, warm-up operation of the vehicle engine is facilitated, while motive power consumed by the vapor compression refrigerator can be reduced. The inventive method uses a displacement device that guides the center of the pattern of movement into the pupil or macula center of the eye, and a determination device that uses the pattern of movement of the scanning movement to determine the pupil center or macula center.