achromatic lens

American  

noun

Optics.

1. a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light.

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Etymology

Origin of achromatic lens

Probably earlier than 1860–65

Example Sentences

See Examples For:

achromatic lens

For average photography, the camera fitted with Kodak Ball Bearing shutter and tested meniscus achromatic lens is amply efficient, for it will make excellent pictures under ordinary conditions.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

One is painted with the most brilliant hues of Romanticism, and glows with the essence of the Romantic spirit--Aspiration; the other looks at life through an achromatic lens, and is a catalogue of Realities.

From Essays on Russian Novelists by Phelps, William Lyon

The eye-piece consists of a single achromatic lens, whose focal length is about two inches.

From Experimental Determination of the Velocity of Light Made at the U.S. Naval Academy, Annapolis by Michelson, Albert A.

It is fitted with the No. 0 Ball Bearing shutter, speed 1/50 of a second, with cable release, as described on page 6, and offers the choice of rapid rectilinear or meniscus achromatic lens.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

A similar argument may be applied to find at what point an achromatic lens becomes sensibly superior to a single one.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various