OPTICAL DEVICE FOR PHASE DETECTION TESTING OPTICAL SYSTEMS,ESPECIALLY OPHTHALMIC LENSES

摘要

A beam radiator (13) provides the light source (14). A receiving sation (15) accepts the optical system (10) to be tested. A receiver (17) intercepts the observed image upstream of the grating (16). - A separator (26) between the light source and receiving station forms a semi-reflective surface (27) on the axis (A) of the optical beam path. The receiver (17) is at the side of the separator. A data processor (18) and calibrator use a beam tracking program and take into account both the theoretical and practical abberations arising from the separator.