Olympus Berek Compensator for BH2 series

The Olympus Berek Compensator for the BH2 series is a precision optical accessory for quantitative retardation measurement in polarized light microscopy. The Berek compensator uses a tilting calcite plate to introduce a variable, calibrated retardation into the optical path, allowing precise measurement of the optical path difference (OPD) of birefringent specimens. By tilting the calcite plate to the extinction position, the retardation of the specimen can be calculated from the tilt angle using calibration tables, providing quantitative birefringence data for mineral identification, materials characterization, and quality control. Designed specifically for the BH2 series, it ensures proper mechanical fit and optical alignment with BH2 polarized light microscope configurations.