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focal length
(redirected from focal lengths)

    Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
focal length
n. Abbr. f
The distance from the surface of a lens or mirror to its focal point. Also called focal distance, focus.
focal length, distance
n
(Physics / General Physics) the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens
focal length  (fkl)
The distance between the optical center of a lens or mirror to its focal point.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.focal lengthfocal length - the distance from a lens to its focus
focal distance
distance - the property created by the space between two objects or points


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Longer focal lengths compress information, while wide-angle lenses can create a richly layered sense of depth.
Shaping perspective with a wide-angle lens by Douglis, Philip N. / Communication World
Made up of 8 pieces instead of the first generation's 11, the design reduces complexity and the number of components, replaces separate LEDs on the pillar with an acrylic light pipe that can be tuned for different focal lengths, and will be capable of combining LEDs to produce amber light as well as red for a combined stop/turn function.
LEDs for the rest of us by Automotive Design & Production
It took both [visual and scientific evidence] to make a compelling argument" For instance, Falco used the sizes of objects and people in the paintings to calculate diameters, focal lengths, and other characteristics of lenses and mirrors that might have been used to project those forms.
Reflections on art: scientists debate whether the old masters used ... by Weiss, Peter Ulrich / Science News
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