focal length
Noun
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Noun
focal length (plural focal lengths)
- (optics) The distance at which something (e.g. a lens, mirror etc.) is in focus; in air it is the distance along the optical axis from a "principal plane" of the lens to one of the lens's focal points.
- French: distance focale
- German: Brennweite
- Portuguese: distância focal
- Russian: фо́кусное расстоя́ние
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004