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Proceedings Paper

Double tailoring of freeform surfaces for off-axis aplanatic systems
Author(s): Angelika Hofmann; Julia Unterhinninghofen; Harald Ries; Stefan Kaiser
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Paper Abstract

The optical design of freeform surfaces is particularly demanding due to the inherently large number of degrees of freedom. Therefore the technique of tailoring optical freeform surfaces (mirrors or lenses), which is based on solving the underlying differential equations, is routinely used in nonimaging optics to efficiently achieve predefined light distributions. Tailoring can also be employed for imaging optics: an optical freeform surface can be tailored such that one condition is exactly fulfilled - i.e. spherical aberration at a specific point is corrected. Recently, we extended this method such that two freeform surfaces can be tailored at the same time (double tailoring). This gives the freedom to impose a second condition, which is also exactly fulfilled. Thereby, this method allows for instance to simultaneously correct spherical aberration and satisfy additional conditions, i.e. the sine condition. As an example for a tailored off-axis aplanatic system we show a head-up display (HUD) consisting of two simultaneously tailored freeform mirrors

Paper Details

Date Published: 18 December 2012
PDF: 8 pages
Proc. SPIE 8550, Optical Systems Design 2012, 855014 (18 December 2012); doi: 10.1117/12.981186
Show Author Affiliations
Angelika Hofmann, OEC AG (Germany)
Julia Unterhinninghofen, OEC AG (Germany)
Harald Ries, OEC AG (Germany)
Stefan Kaiser, OEC AG (Germany)

Published in SPIE Proceedings Vol. 8550:
Optical Systems Design 2012
Laurent Mazuray; Daniel G. Smith; Jean-Luc M. Tissot; Tina E. Kidger; Frank Wyrowski; Stuart David; Rolf Wartmann; Jeffrey M. Raynor; Andrew P. Wood; Pablo Benítez; Andreas Erdmann; Marta C. de la Fuente, Editor(s)

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