Concept of an Optical Distance and Speed Sensor Using Novel Offsetless Spatial Frequency Filters in the Area of Functional Safety. - Frank Wasinski; Werner Bonath; Ubbo Ricklefs; Josef Börcsök; Michael Schwarz; Eike Hahn (ISIE, 2023)

Study of an OPTO-ASIC for a Functionally Safe Speed Sensor Using the Spatial Frequency Filter Method. - Frank Wasinski; Werner Bonath; Ubbo Ricklefs; Michael Schwarz; Josef Börcsök (DDECS, 2025)