Pertaining to, produced by, or involving, both the reflection and refraction of light; as, a catadioptric light.
An optical system containing both reflective and refractive elements.
Telescope design using a combination of mirrors and lenses. More compact than reflectors of similar apertures. Common types include Schmidt-Cassegrain, Maksutov-Cassegrain, Schmidt-Newtonian, Maksutov-Newtonian, etc.