Focal Plane (of a light)

From International Dictionary of Marine Aids to Navigation
Revision as of 02:58, 3 February 2024 by Minsuids (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

2-2-170

The horizontal plane through the focus of the optical apparatus of the light.

Ch2 Fig10.jpg


Note: In lighthouse practice in some countries the term "focal plane" is used with the above meaning, although this is quite a different meaning from that of 2-2-165.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Languages

English

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM

Retrieved from "http://www.iala.int/wiki/dictionary/index.php?title=Focal_Plane_(of_a_light)&oldid=9505"