diopter
Noun
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Noun
diopter (plural diopters)
- A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.
- The dioptre adjustment mechanism of a pair of binoculars.
- (obsolete) Any lens system, such as a telescope.
- (obsolete) A theodolite or similar surveyor’s angle measuring device.
- (obsolete) An alidade.
- (obsolete) A surgical speculum.
- (obsolete) An instrument for drawing the skull by projections.
- German: Diopter
- German: Diopter
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.014