| 摘要 |
A moire contouring imaging device for small field moire imaging in which both the illumination and viewing optical beam paths pass through a common primary lens and optical grating. The use of such common optical elements improves optical stability and accuracy since magnification and focal length and other mismatching between discrete optical elements in the viewing and illumination paths are avoided. The device is assembled in a rugged elongated housing. The device further incorporates mechanisms for either translating the grating to generate a moire phase shift, or translating the folding mirror of the system to provide a moire field shift.
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