One of the mysteries of the English language finally explained.
Denoting an optical system which involves both the reflecting and refracting of light, in order to reduce aberration.
- ‘More recently, it often shows up in fairly complex catadioptric systems as a simple, inexpensive substitute for an aspheric mirror.’
- ‘Despite some improvements in narrowing the laser bandwidth, the lack of a glass material in addition to CaF 2 to compensate for chromatic aberrations makes a catadioptric design the only possible choice for the projection optics.’
- ‘One alternative for 126 nm is to eliminate refractive or catadioptric designs and instead use an all-reflective approach.’
- ‘Most 157-nm lithography system designs are catadioptric, i.e., incorporating both mirrors and lenses in the optics to minimize the chromatic aberrations.’
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