Abstract
A large frame and framing camera with a continuous rotating mirror is developed under the coaxial imaging theory and a controlling defocusing range.With the frame size of 30 mm×18 mm,it shows a large relative aperture and higher resolution.Moreover,its big stops are 1/15 for the spatial direction and 1/35 for the scanning direction.The static visual resolution and dynamic visual resolution of the camera are 46 lp/mm and 35 lp/mm,respectively,and it can offer the number of frames of 80 and framing rate from 1×104 frame/s to 5×105 frame/s.Furthermore,the high speed rotation mirror in the camera uses a fiber sensor system to produce and transfer the rotation signals,which eliminates the influence of the electromagnetic disturbance from a high speed rotating electromotor on the rotation signals and ensures the measurement accuracy.The camera has been applied to the detonation and shock wave physics experiments and the experimental processing has been recorded at a framing rate of 2×105 frame/s.Obtained results demonstrate that the camera has larger frames and higher resolution and is suitable for the various experiments of shocking,detonation,projectile attitude and target photography.
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