PAPERS AND PATENTS
Papers
[A copy of any of the following may be obtained simply by e-mailing a request.]
“Measuring Borescope Optical Quality”, Materials Evaluation, 61, 168-172, February 2003.
“Variation of magnification with focus”, Applied Optics, 41, 1282-1290, 1 March 2002.
“Compensating differential albedo in topographic lidar through the use of three or more lidar wavelengths”, co-author with Allen R. Geiger, in Laser Radar Technology and Applications V, G. W. Kamerman, et. al., ed., Proc SPIE, 4035, pp. 85-95 (2000).
“Video cursor characteristics for high-precision three-dimensional endoscopic measurements”, Presented at Air Transport Association Nondestructive Test Forum, Albuquerque, NM, 29 September, 1998.
“Making accurate three-dimensional measurements through a standard borescope”, in Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware II, G. A. Geithman and G. E. Georgeson, eds., Proc. SPIE, 3397, pp. 264-276 (1998).
Issued Patents
“Apparatus and method for making accurate three-dimensional size measurements of inaccessible objects”, U. S. Patent No. 6,009,189 (28 December 1999). [Also see UK Patent No. 2 333 595 (21 March 2001). The U.S. patent has so many printing errors that it is almost unreadable. The UK Application can be downloaded from WIPO (World Intellectual Property Organization) as document WO 98/07001.]
“Eliminating routine alignment calibrations in perspective dimensional measurements”, U. S. Patent No. 6,121,999 (19 September 2000).
“Simple system for endoscopic non-contact three-dimensional measurements”, U. S. Patent No. 6,459,481 (1 October 2002).
“Focusing systems for perspective dimensional measurements and optical metrology”, U. S. Patent No. 6,476,979 (5 November 2002).
“Focusing systems for perspective dimensional measurements and optical metrology”, U. S. Patent No. 6,806,899 B1 (19 October 2004).
[Additional Patents are Pending.]
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Copyright © 2005, David F. Schaack. All Rights Reserved. |