For more than 30 years, OEG GmbH has been developing and manufacturing high-precision optical measuring instruments in Germany. One of the product lines is used to measure optical parameters such as focal length, back focal length, radius of curvature of lenses, centering, lens thickness, modulation transfer function (MTF), field curvature, astigmatism, distortion and chromatic aberration of optics. In addition to the standard products for the above applications, numerous other special solutions have been developed. These include a SWIR autocollimator, a motorized, software-controlled alignment autocollimator, cylindrical lens measuring devices or wedge angle sensors. Basically, OEG GmbH also sees itself as a specialist for autocollimation applications in connection with BV.systems.