A Wide Angle-of-View Thermal Imaging System Utilizing the Rotation of Optical Path

A wide angle-of-view far infrared (FIR) system based on the method of optical path rotation is presented. The system integrated one FIR camera and one rotating Gold-sprayed mirror controlled by one stepping motor. The FIR camera takes image sequence from the rotating mirror in the real-time monitor. Meanwhile, the speed of pixel movement on the FIR imaging plane is analyzed to obtain the rapidest data acquisition without motion blur. Besides, the view range of the proposed system is considered. Then, the prototype has been designed according to the results of simulation. The experiment data has verified the theory of motion blur. This thermal imaging technique is complexless, noninvasive and feasible for many fields involving the automatic temperature acquisition module.