A passive dynamic infrared generating technique as well as a related device was presented. The time constant, space resolutions and contrast ratio of the transducer were discussed theoretically and measured experimentally. Dynamic infrared images with space resolution of 6 lp/mm, contrast ratio better than 100:1,and time constant of about 6ms were realized in the experiment. The transducer can work for infrared image evaluation, calibration and dynamic infrared image simulation.