Optical Profilometer Training

SOP 4: Move to Focus Position

The instrument is now protected from driving the stage down further than where the Z-stop has been set. The user and the software are prevented from moving below the Z-Stop.

Focus Aid graphic
From the measure tab, go to Focus Aid.

Please watch the following Focus Aid video (:26).

  • Move up in Z in MEDIUM speed until the bright spot is centered in the bull's-eye.
  • Slow down (with the twist motor control) as you get close to center and attempt to get the fringes visible.
  • The brightness of the spot is dependent on the sample. The rougher and more scattering the sample, the more dim this spot will be. It is possible not to have one. In that case, go back to normal view and attempt to focus on the sample surface by eye.