Roke Manor is developing a family of instruments for the automatic measurement of radius of curvature of any polished surface by non-contact means. These instruments can be of use in the optical workshop, and other places where in-situ measurements are required to be made. Simultaneous measurements of external and internal surfaces can be made and information supplied on decentration and tilt. The family of instruments removes the requirement for accurate test surfaces as required by interferometry, and the long working distance objectives of auto-collimators, while maintaining accuracy. The measurements are accomplished by non- contact means and can be made by personnel unskilled in conventional methods, such as interpreting interference fringes.

Date Published: 1 February 1993
PDF: 7 pages
Proc. SPIE 2088, Laser Dimensional Metrology: Recent Advances for Industrial Application, (1 February 1993); doi: 10.1117/12.168062

Published in SPIE Proceedings Vol. 2088:
Laser Dimensional Metrology: Recent Advances for Industrial Application
Michael J. Downs, Editor(s)