Dynamic speckle photography of the gear tooth has been achieved by combining a pulsed ruby laser with the external synchronizing trigger signal.

红宝石脉冲激光器和外同步触发信号结合实现了齿轮轮齿动态散斑图的记录。

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Rotating aperture cone shearing white-light speckle photography for measuring dynamic derivatives of displacements is proposed in this paper.

利用旋转孔径技术和锥镜剪切技术进行白光散斑剪切照相，检测动态位移导数场。

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