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词汇 afocal
释义

Definition of afocal in English:

afocal

adjective eɪˈfəʊkl
Optics
  • Of a lens or other optical system: that transfers an image without bringing it to a focus, i.e. so that rays entering parallel emerge parallel; relating to or constituting such a system.

Origin

Late 19th century; earliest use found in Proceedings of the Royal Society of London. From a- + focal.

Definition of afocal in US English:

afocal

adjectiveeɪˈfəʊkl
Optics
  • Of a lens or other optical system: that transfers an image without bringing it to a focus, i.e. so that rays entering parallel emerge parallel; relating to or constituting such a system.

Origin

Late 19th century; earliest use found in Proceedings of the Royal Society of London. From a- + focal.

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