focal plane

English

Noun

focal plane (plural focal planes)

  1. (optics) Any plane perpendicular to the axis of a lens or mirror.
  2. (optics) Such a plane, in a camera, microscope etc, in which the real image is in focus.
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.