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On-Machine Testing of Optical Quality

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A commercial compact digital interferometer, directly mounted on an ultraprecision diamond-turning machine, offers an alternative to today’s stylus-based machine-integrated measuring systems and provides fast noncontact testing of optical surfaces.

Thomas Blümel, Fisba Optik GmbH, Berlin, and Markus Bosse and Martin Kurz, IWF, Technical University Berlin

Interferometers often are seen as laboratory instruments, requiring rooms with controlled environments, skilled operators and adequate space. Apart from the fact that this is not necessarily true of all devices on the market, integration of interferometric sensors directly into production lines...Read full article

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