Birefringence measuring device using imaging technique, by parallel detection of multiple measuring points using e.g. CCD line or chip

摘要

The device consists of a light source, polarization filter, lamba/4 plate, reflector and detector. The detector (22) may be a CCD line or flat CCD chip. A polarization filter for generating linearly polarized light is arranged between a detector (22) and light source (23) unit and a window (20). The direction of the polarization filter is rotatable.