Engineering optics
Optical measurement and investigation techniques are especially suitable for in-process application because of non-contact opreation and high working speed. We develop methods for the detection of shape-aberrations, waviness, roughness and local defects adaptable to mechanical and optical productions. Our aim is to advance the development upto the design of sensor prototypes integrable directly into industrial processes. Depending on the measurement task and conditions different functional principles will be employed.
The interaction of incident light beam and microstructured/rough interfaces/surfaces can be described by adequate scalar, vectorial or rigorous calculation models. Modularly extendable MatLab routines and commercial simulation softwares will be improved and adapted to the specified calculation tasks. By this way it is possible to work out measurement strategies, generate database and improve the optical construction in order to achive a high-speed measurement evaluation forour light scattering technique.
Angle resolved scattering methods (ARS), i.e. detection of scattering intensities in in-plane/out-of-plane as well as reflected/transmitted directions, provide experimental analysis of any light scattering setups in a wide application area. We assure availability of a board range of investigation facilities including high-resolution 3D photogoniometer, high resolution goniometer and translation stages, luminance cameras with large dynamic range upto 1.10000000, different lasers in a power range of 1-50 mW (wavelength in red and green regions), wide range of optomechanical components by OWIS, LINOS and FMT as well as cleanroom conditions for probe preparation and cleaning. Developments in the fields of roughness analysis, characterization of coatings, detection of shape-aberrations and waviness, analysis of microstructures, examination of gratings as well as detection of local defects will be implemented especially in mechanical and automotive engineering, glas production, tool design and in manufacturing of optical components.
Prototypes of optical sensor constructions will be developed that provide in-process controls of predefined process parameters. Since optical measurement and test methods ensure non-contact inspections and high operation speed they are applied aspecially in automated production procedures. Different functional principles will be utilized depending on the measurement conditions and the kind of relevant quantities.
- WeraDeflex for the waviness analysis of ground cylindrical surfaces
- DeMek for the detection of shape-aberrations and waviness of plane and cylindrical surfaces
- VoluScat for the quantification of volumetric inhomogenities
contact: Mr. Dr. A. Hertzsch phone: 03641 282589 back