4" and 6" Test Lenses for Fizeau Interferometers: Because their wavefront deformation is insignificant, these lenses ensure a safe and exact calibration of interferometers. Manufactured with precision, they induce extremely small measuring errors and their field correction provides for a high metrologic confidence level. No readjustment is required after a lens replacement because all lenses have a small unified mass. With the help of a standardized mount, interferometers can easily be retrofitted.

Due to these properties, our test lenses are especially qualified for the high-precision testing of optical surfaces, for the precise inspection of wavefronts in an optical system and to support surface evaluation procedures according to ISO 10110-5.