To improve the spatial resolution of the developed thermal microscope based on the uncooled focal plane arrays,a novel high resolution thermal microscope imaging system with optical plate rotating micro-scanner is designed.

Utilizing optical microscanning technique and sub-pixel imaging processing to achieve sub-pixel imaging system is an important technical method to improve the spatial resolution of optoelectronic imaging system.

In order to improve the spatial resolution of the optical microscanning thermal microscopic system,the zero of microscanning should be determined to complete the oversample reconstruction.

The new display screen which is based on the principle of mechanic rotate scanning is designed.

Simulation results show that comparing with long-side scanning,short-side scanning and sub-area scanning,the rotated scanning of rectangular part can greatly decrease temperature gradient in the begin point and the end point of the first scanning line,especially there is a positive temperature gradient in the end point which can avoid the temperature decreasing of the molten metal.