Noncontact optical distance and speed sensor using novel offsetless spatial frequency filters

Malte Nickel; Frank Wasinski; Jochen Frey; Ubbo Ricklefs

doi:10.1117/12.2520593

11 April 2019 Noncontact optical distance and speed sensor using novel offsetless spatial frequency filters

Malte Nickel, Frank Wasinski, Jochen Frey, Ubbo Ricklefs

Proceedings Volume 11028, Optical Sensors 2019; 110281M (2019) https://doi.org/10.1117/12.2520593
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

Optical spatial frequency (correlation) filtering techniques identify a class of noncontact vectorial velocity sensors. Detectors according to this optical measuring method are characterized by a fast measurement with a small dead time and low measurement uncertainty. For the purpose of measurement, the sensors determine the relative displacement of any randomly structured surface with respect to the sensor. The use of newer filter structures can reduce the measurement uncertainty.

Citation Download Citation

Malte Nickel, Frank Wasinski, Jochen Frey, and Ubbo Ricklefs "Noncontact optical distance and speed sensor using novel offsetless spatial frequency filters", Proc. SPIE 11028, Optical Sensors 2019, 110281M (11 April 2019); https://doi.org/10.1117/12.2520593

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