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Method for calibrating wave front error of computer generated hologram for examination of optical surface, involves setting computer generated hologram, where plane wave is emitted from Fizeau-interferometer towards reference mirror
Method for calibrating wave front error of computer generated hologram for examination of optical surface, involves setting computer generated hologram, where plane wave is emitted from Fizeau-interferometer towards reference mirror
The calibrating method involves setting a computer generated hologram (CGH) (3), which defines an adjusted portion of the intensity of the light coming from a Fizeau-interferometer (1) as calibrating light in a value different from null, where the CGH concerning the Fizeau-interferometer and a testing optical surface (21) are adjusted. A plane wave is emitted from the Fizeau-interferometer towards a reference mirror (4), where the plane wave traverses the CGH twice. An independent claim is included for an arrangement for calibrating wave front error of a computer generated hologram for examination of an optical surface.
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