WAVEFRONT SENSOR FOR OBJECTIVE MEASUREMENT OF AN OPTICAL SYSTEM AND ASSOCIATED METHODS

摘要

A wavefront sensor includes an afocal relay stage for magnifying an incoming wavefront reflected from a source plane. In an exemplary application, a retina of an eye reflects an impinging light beam thereon to form a series of wavefronts. A lenslet array (23) is positioned at a reference plane (22) of the afocal relay stage (21) to receive the magnified wavefront. Further downstream is positioned a means (25) for imaging and demagnifying a focal plane image (249) of the lenslet array (23) at a final image plane (26). This demagnified image then serves as input to an anlyzer, such as a charge-coupled-device (CCD) camera.