Design and Control of Optical Path Switching Device in Image-spectrum Coordination Detection System

The existing image-non-imaging-spectrum system directly divides the incident light into two beams of medium wave band and long wave band. These two bands are used for imaging and spectra measuring respectively, and then carrying out target tracking and recognition. When the detection distance is relatively close and the area of the target in the image is relatively large, image information is enough to complete the target tracking and recognition, and it is unnecessary to measure the spectra at the same time. In view of the characteristics of the existing image-spectrum integrated system, this paper plans to study an intelligent optical path switching device to replace the spectroscope of the existing image-spectrum integrated system. This device can automatically switch optical path of the system to the straight-through or spectroscopic state, so that the system can be manually or automatically set the detection modes, image or image-spectrum mode. Such a system can be compatible with the functions of existing image-spectrum integrated system, making the system functions more flexible and powerful. In this paper, the structure and spectroscope of the optical path switching device are designed. And the control of up-down motion of the spectroscope is simulated.