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diopter

n. 屈光度

屈光度

WordNet (r) 3.0 (2006) (WordNet)

diopter
n 1: a unit of measurement of the refractive power of a lens
which is equal to the reciprocal of the focal length
measured in meters; used by oculists [synonym: {diopter},
{dioptre}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Diopter \Di*op"ter\, Dioptra \Di*op"tra\, n. [L. dioptra, fr.
Gr. ?. See 2d {Dioptric}.]
An optical instrument, invented by Hipparchus, for taking
altitudes, leveling, etc.
[1913 Webster]

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英文字典中文字典相关资料:

What Is A Diopter? - All About Vision
What is a diopter? A diopter is a unit used to calculate the focusing strength of a pair of glasses or contact lenses And it is the measurement unit for an optical prescription If you know the power of a lens in diopters, taking the inverse will give you the focal length — the distance where light is focused What does a diopter mean?
Dioptre - Wikipedia
A dioptre (British spelling) or diopter (American spelling), symbol dpt or D, is a unit of measurement with dimension of reciprocal length, equivalent to one reciprocal metre, 1 dpt = 1 m −1
Magnification vs. Diopter: Understanding the Difference
So just to recap, this is how you’ll be able to differentiate the two: If the lens makes the object appear 4 feet closer, that’s a simple lens But if it appears 4 feet closer six times, it’s definitely a compound lens A diopter is also a measurement and an optical power of a lens
What Is a Diopter? - Warby Parker
A diopter is the unit of measurement used for an eye prescription The focusing strength of your glasses or contacts is measured in diopters In other words, diopters measure how powerful your prescription is

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