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focal plane

   Also found in: Dictionary/thesaurus, Medical, Acronyms 0.01 sec.
focal plane [′fō·kəl ‚plān]
(optics)
A plane perpendicular to the axis of an optical system and passing through the focal point of the system.
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It has a focal plane of 36 feet and produces four flashes every 20 seconds, white or red depending on direction - white has a range of 11 nautical miles and red has five miles.
HORSE PLAY by The Racing Post (London, England)
The lens is designed to focus the visible and invisible infrared light rays onto a single focal plane.
Day/night lens by Security Management
The Thousand Oaks-based imaging and electronics developer, a privately held research spinoff of Rockwell International, will provide infrared focal plane arrays for NASA's James Webb Space Telescope.
ROCKWELL AND NASA TEAM UP by Daily News (Los Angeles, CA)
 
 
 
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