| 摘要 |
The apparatus comprises a module having a predetermined form, a rotatory douser mounted in the module, an aperture mounted in the interior of the module, a lens installed in the rear part of the aperture, an object beam for radiating in the front part of the module, a beam spirit for gathering reference beam, a charge coupled device for sensing an interference pattern of the reference beam and the object beam, and a signal processer for converting an image sensed in the charge coupled device into an electric signal and storing and subtracting each frame.
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