A Novel Method for Straightness Measurements Using a Reflection Confocal Optical System
Published June 02, 1998 by ISATA - Dusseldorf Trade Fair in United Kingdom
Event: ISATA 1998
Straightness measurement is a very important technique in the field of Mechanical Engineering. A particular application would be very high accuracy machining on a diamond turning lathe. In this paper, a novel optical method for measuring straightness of motion using reflection confocal optics is proposed and its mathematical analysis is outlined. The advantages of this method are (i) the lateral displacements in the direction of the two axes perpendicular to the optical axis can be measured, (ii) the rotation angles around all three axes can be measured, and (iii) reflection optical systems are more compact in length than transmission optical systems.