Cassegrain reflector

短语

词形变化

Cassegrain reflectors 复数 Cassegrain reflectors

别名

Cassegrain

释义与例句

n.
  1. 1.

    A combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical system's primary mirror entrance aperture.

词源

Named after Laurent Cassegrain, its probable inventor.

来源：wiktionary