from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Varying slightly from sphericity and having only slight aberration, as a lens.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. aspherical
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. varying slightly from a perfectly spherical shape
They're called aspheric lenses and are great for people (like me) with slight astigmatisms.
Whitehead gave me a very difficult problem – one that had been attacked unsuccessfully for a quarter of a century – namely, to show that knots are "aspheric" (we won't explain here what this means).
My spell checker says "aspheric" isn't a word, but I'll leave it in as GE must know what it's talking about and has presumably checked that.
I installed the European-style blind-spot mirror, which is aspheric, and I do not have a blind spot anymore.
Chiara was His sister, a regal beauty with aspheric eyes, cinematic in presence: Chiara who was always made up elegantly for the parties that she would throw at their flat along the Riviera; Chiara who was married to the hilarious, devil-may-care Andrea; Andrea whose family spent their summers in Nice; Andrea who had approached Chiara on a dare one sultry summer evening.
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LightPath manufactures optical products including precision molded aspheric optics
The lens features six elements in five groups (including three aspheric elements).
The TECNIS IOL is an acrylic wavefront lens with an aspheric design.
The Tamron 17-50/2.8 (I'm guessing you got the aspheric one?) is a great lens and people rave about it on photo forums.
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