adjective Optics.
- pertaining to or produced by both reflection and refraction.
adjective
- involving a combination of reflecting and refracting componentsa catadioptric telescope
- Relating to both the reflection and refraction of light, especially by a combination of mirrors and lenses or by a prism. Catadioptric systems are used in Fresnel lenses, optical calibration equipment, and some telescopes. Compare catoptric dioptric.