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Laser Inspection of Surfaces - Vibration Management ??

Laser Inspection of Surfaces - Vibration Management ??

Laser Inspection of Surfaces - Vibration Management ??

(OP)
Hi All,
    hopefully someone will have experience of something like this !! - I am using a micro epsilon laser/camera displacement sensor to measure surface defects. The laser is accurate down to .25um so picks up quite a lot of the vibration as it is being moved over the surface (movement is achieved through an x-y table arrangement just like a machine table). Up until now this hasn't been a problem as the defects that I have been scanning have been big enough to be detected over the vibrational 'noise', however I am now trying to improve the resolution of the system. Can anyone advise me what is the best way to filter out the noise in the system WITHOUT buying expensive linear motion slides (outside dept budget I'm afraid). It seems to me that using a hi/low or bandpass filter might work well, but if anyone else has any ideas I'm open to suggestion.

Many thanks in advance,

DC.

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