dioptric

American  

[dahy-op-trik] / daɪˈɒp trɪk /

Also dioptrical

adjective

1. Optics. pertaining to dioptrics.

   dioptric images.

2. Optics, Ophthalmology. noting or pertaining to refraction or refracted light.

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dioptric British  

/ daɪˈɒptrɪk /

adjective

1. of or concerned with dioptrics

2. of or denoting refraction or refracted light

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dioptric Scientific  

/ dī-ŏp′trĭk /

1. Relating to the refraction of light, especially by a lens. Dioptric lenses are used in Fresnel lenses and camera viewfinders.

2. Compare catadioptric catoptric

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Other Word Forms

• dioptrically adverb

Etymology

Origin of dioptric

From the Greek word dioptrikós, dating back to 1625–35. See diopter, -ic

Example Sentences

It is of the dioptric kind, and is bright, steady, and uniform, ranging over an horizon of eight miles, and visible at the distance of ten miles from a coaster’s deck.

From Smeaton and Lighthouses A Popular Biography, with an Historical Introduction and Sequel by Smeaton, John

The dioptric system, in which the rays of light are transmitted through glass, has been introduced into the floating lights of India by the Messrs Stevenson, C.E., of Edinburgh.

From The Floating Light of the Goodwin Sands by Ballantyne, R. M. (Robert Michael)

The Trinity-House of London followed next in adopting the improved system, and a revolving dioptric light of the first order was erected at the Star Point in Devonshire.

From Smeaton and Lighthouses A Popular Biography, with an Historical Introduction and Sequel by Smeaton, John

In fishes and reptiles, as Owen has remarked, "The range of gradation of dioptric structures is very great."

From The Origin of Species by means of Natural Selection, 6th Edition by Darwin, Charles

It is true that the dioptric apparatus was perfected independently by Fresnel, who had also the satisfaction of being the first to put it into operation.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various