摘要
采用共轴理论和控制离焦相结合的方法,设计了大画幅等待式转镜分幅相机,该相机的画幅尺寸达到了30mm×18mm,同时还具备了相对孔径大和分辨率高的特点,对底片的相对孔径为空间方向1/15和扫描方向1/35,动态目视分辨率达到了35lp/mm,总画幅数80幅,摄影频率1×104～5×105 frame/s。采用2×105 frame/s的拍摄频率对某爆轰过程进行了试验记录,得到了高分辨率的图像。结果表明:相机的画幅尺寸大、空间分辨率高,适用于冲击、爆轰和弹体姿态等试验过程和目标的拍摄。
A large-frame continuous rotating mirror framing camera is developed by using the coaxial imaging theory and controlling defocusing range.It has the frame size of 30 mm×18 mm,dynamic visual resolution of 35 lp/mm,relative aperture of 1/15 in spatial direction and 1/35 in scanning direction,frame number of 80,and framing rate from 1×104 to 5×105 frame/s.The camera runs conveniently under a new control system.High-resolution images about a detonation experiment are obtained with this camera under the framing rate of 2×105 frame/s.It is proved that this camera can be used for imaging in such experiments as shock wave,detonation and gesture of bowb.
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第7期156-161,共6页
Laser & Optoelectronics Progress
关键词
光学设计
高速摄影
高速相机
共轴设计
爆轰试验
optical design
high-speed photography
high-speed camera
coaxial imaging design
detonation experiment
