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18 September 2007 Some properties of Mertz type aspheric surfaces
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The aspheric reflecting surface types studied by L. Mertz for correcting certain aberrations of a spherical primary telescope mirror are examined and some properties of these surfaces are presented. For the one-surface aspheric that corrects spherical aberration of all orders, a 6th order equation for the surface shape is derived. For the set of two aspheric surfaces correcting spherical aberration and coma of all orders, a set of differential equations have been developed to describe the surface shapes. The off-axis imaging performance is derived from the on-axis imaging properties and compared with ray trace results.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Torben B. Andersen "Some properties of Mertz type aspheric surfaces", Proc. SPIE 6667, Current Developments in Lens Design and Optical Engineering VIII, 66670A (18 September 2007);

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