focal length

English

The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror

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.

Translations

distance

Chinese:
Mandarin: 焦距 (zh) (jiāojù)
Czech: ohnisková vzdálenost f
Danish: brændvidde
Dutch: brandpuntsafstand (nl) m
Finnish: polttoväli (fi)
French: distance focale (fr) f
German: Brennweite (de) f
Hungarian: fókusztávolság (hu)
Indonesian: jarak pumpun, jarak fokus
Irish: fad fócasach m

Japanese: 焦点距離 (ja) (しょうてんきょり, shōten kyori)
Maori: roa o te ngahunga, roa ngahunga
Norwegian:
Bokmål: brennvidde m or f

Nynorsk: brennvidd f, brennvidde f
Polish: ogniskowa (pl) f
Portuguese: distância focal f
Romanian: distanță focală (ro) f
Russian: фо́кусное расстоя́ние (ru) n (fókusnoje rasstojánije)
Swedish: brännvidd c
Tagalog: tingubing haba

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