| 释义 |
Schmidt system
Schmidt systemn. An optical system consisting of a concave spherical mirror with a transparent lens, resembling a plate of glass, located at its center of curvature, used in reflecting telescopes to offset spherical aberration and coma.
[After Bernhard Voldemar Schmidt (1879-1935), Estonian-born German optical scientist.]Schmidt system
Schmidt system[′shmit ‚sis·təm] (optics) An optical system designed to eliminate spherical aberration and coma, which, in its original form, consists of a spherical mirror, a Schmidt correction plate near the focus of the mirror, and usually a curved reflecting plate at the focus of the mirror; used in astronomical telescopes with unusually wide fields of view and in spectroscopes, and to project a television image from a cathode-ray tube onto a screen. Also known as projection optics; Schmidt camera; Schmidt objective; Schmidt optics. |