Inventor
SCHWAB FRED J
US3 patents
Patents
3 patentsUS7408728B2Aug 5, 2008
System and method for focal length stabilization using active temperature control
QUALITY VISION INTERNATIONAL I15 citations87
US7602563B2Oct 13, 2009
System and method for focal length stabilization using active temperature control
QUALITY VISION INTERNATIONAL I8 citations78
US7538960B2May 26, 2009
Air bearing guided zoom lens for metrological measurements
QUALITY VISION INTERNATIONAL I4 citations58