PrismMaster^®

Precision Goniometer for Angular Measurements of Optical Prisms and Polygons

The PrismMaster^® product variant is the core of the product group. The outstanding feature of this variant is the air bearing of the test sample table. The ultra-precision air bearing used has negligibly small radial and axial errors of less than 50 nm, permitting extremely precise, stable measurement values. In addition, the high run out axial accuracy of the air bearing leads to a significant increase of precision during measurement of pyramidal error.

The devices are equipped with incremental angular measurement systems that have an angular resolution of 0.36 arcseconds and an absolute accuracy of less than 0.5 arcseconds.

The electronic autocollimators used by PrismMaster^® are characterized by extremely high resolution (0.01 arcsec) and accuracy (0.05 arcsec).

The test sample table is turned manually, with an additional fine adjustment enabling fast and precise positioning of the table.

These instruments are very flexible and are preferably used in the laboratory or quality assurance for single measurements.

PrismMaster^® goniometers are also offered in an ultra-precision class under the designation HR line. PrismMaster^® HR goniometers achieve the highest accuracy in the world for angular
measurements, with less than 0.2 arcseconds accuracy over 360 degrees.