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dioptre    
n. 屈光度

屈光度

dioptre
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}]


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  • 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
  • What Is A Diopter? - All About Vision
    What is a diopter? A diopter is an optical unit used to calculate the focusing strength of a pair of glasses or contact lenses And it is the measurement unit for a glasses or contact lens 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? You may have wondered what the
  • Diopters: The unit of measurement for the refractive power of the eye . . .
    Diopters explained simply: What are diopters? How are they measured for short-sightedness and long-sightedness? What do they mean for the correction of defective vision?
  • Understanding Diopters: A Guide to Optical Measurement and . . . - eyeweb
    Dive into the world of diopters with our comprehensive guide! Learn about optical measurement, vision correction, and more Perfect for those seeking clarity on their vision needs
  • Dioptre — Grokipedia
    A dioptre (British English; symbol: D or dpt) is a unit of measurement in optics that quantifies the power of a lens or curved mirror, defined as the reciprocal of the focal length in metres
  • What Is a Diopter and How Does It Measure Vision?
    The diopter is the standard unit of measurement used to quantify the optical power of a lens or curved mirror, which measures its ability to bend or refract light rays This unit is foundational to optics and is used to calculate the focusing strength of corrective lenses like eyeglasses and contact lenses It ensures that the necessary vision correction is accurately translated into a
  • Dioptres – meaning and values - Hylo we care
    The dioptre owes its name to the French eye specialist Ferdinand Monoyer Since there was no unit for the "strength" of lenses in 1872, he simply invented the dioptre himself, and it is still used today to measure refractive error
  • DIOPTRE | definition in the Cambridge English Dictionary
    Medical examination (Definition of dioptre from the Cambridge Advanced Learner's Dictionary Thesaurus © Cambridge University Press)
  • Diopter | Magnification, Refraction, Aberration | Britannica
    Diopter, in optics, unit of magnifying power of a lens or lens system Because the power of a lens is proportional to unity (one) divided by the focal length (see lens), the power of a lens in diopters is numerically equal to 1 m divided by the focal length in metres The algebraic sign of the
  • DIOPTER Definition Meaning - Merriam-Webster
    diopter (an optical instrument), from Middle French dioptre, from Latin dioptra, from Greek, from dia- + opsesthai to be going to see — more at optic





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