Journal Article10.1364/OPN.23.6.000030
Freeform Optical Surfaces: A Revolution in Imaging Optical Design
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TL;DR: The theory of aberrations, techniques in optical system optimization, computation speed, precision fabrication of surfaces without symmetry, and extensions to the range of the surface slopes allowed in optical testing are described in this paper.
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Abstract: A revolutionary optical surface is the result of developments in the theory of aberrations, techniques in optical system optimization, computation speed, precision fabrication of surfaces without symmetry, and extensions to the range of the surface slopes allowed in optical testing.
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