focal planes

A form of focal plane — Any plane perpendicular to the axis of a lens or mirror.

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Meanings

noun
  1. pluralplural of focal plane
Cite this entry
APA

focal planes. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/focal%20planes

MLA

“focal planes.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/focal%20planes. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “focal planes,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/focal%20planes.

Source: focal planes on Wiktionary, CC BY-SA 4.0.