Evaluation of the performance of a novel laser tracker used for coordinate measurements

Sonko Osawa; Toshiyuki Takatsuji; Jiang Hong; Hironori Noguchi; Tomizo Kurosawa

doi:10.1117/12.445613

22 October 2001 Evaluation of the performance of a novel laser tracker used for coordinate measurements

Sonko Osawa, Toshiyuki Takatsuji, Jiang Hong, Hironori Noguchi, Tomizo Kurosawa

Author Affiliations +

Proceedings Volume 4401, Recent Developments in Traceable Dimensional Measurements; (2001) https://doi.org/10.1117/12.445613
Event: Lasers in Metrology and Art Conservation, 2001, Munich, Germany

Abstract

A laser tracking interferometer system (LTS), which can measure 3D coordinates, has been developed in our laboratory. The LTS makes use of the principle of laser trilateration. The principle satisfies Abbe's principles and the coordinates are calculated solely form length measurements. Consequently, measurements directly traceable to length standard can be achieved. The first generation trackers, however, were large, heavy and not so accurate. So, we developed a compact, accurate laser tracker. It has a hemisphere mirror, which is used as a tracking mirror and is driven by an X-Y moving table. The performance of this laser tracker was checked by a high precision coordinate measuring machine. The results of the experiments show that the displacement measuring error of this laser tracker is below 0.6 micrometers , which is much better than any other conventional laser trackers.

Citation Download Citation

Sonko Osawa, Toshiyuki Takatsuji, Jiang Hong, Hironori Noguchi, and Tomizo Kurosawa "Evaluation of the performance of a novel laser tracker used for coordinate measurements", Proc. SPIE 4401, Recent Developments in Traceable Dimensional Measurements, (22 October 2001); https://doi.org/10.1117/12.445613

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