Design of a Computer Generated Hologram (CGH) for Null-Testing
Abstract
This document presents the design and application of a Computer-Generated Hologram (CGH) for the null-testing of an aspherical lens. A simplified system was considered, consisting of a point source, the CGH in form of an ideal diffractive lens, and the asphere. We then optimized the CGH to compensate the aberrations introduced by the lens. By introducing the optimized CGH into the optical path, the aberrations are corrected such that the system produces a diffraction limited spot at the output.
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