aspherical

American  

[ey-sfer-i-kuhl] / eɪˈsfɛr ɪ kəl /

Also aspheric

adjective

Optics.

1. (of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.

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Etymology

Origin of aspherical

First recorded in 1920–25; a- ⁶ + spherical

Example Sentences

Larger fibers with optimized freeform and aspherical lens designs or a combination of lenses printed directly onto the fiber could help improve the output power.

From Science Daily • Dec. 13, 2023

Sigma 24-70mm f/2.8 DG DN Art zoom lens $899 $1,099 19% off Sigma’s latest 24-70mm f/2.8 lens for mirrorless systems features three aspherical elements, a stepping motor for fast autofocus, and an 11-bladed aperture.

From The Verge • Dec. 9, 2021

Researchers do not yet know whether the likely aspherical explosion of the supernova preceding HE 1327-2326 was a rarity or a common occurrence.

From Scientific American • May 31, 2019

“Now we have some motivation to look at aspherical supernovae,” he says.

From Scientific American • May 31, 2019

As it eats, the phalarope moves its beak in a rapid tweezing motion, transforming food-laden droplets of water into aspherical shapes that are propelled up into its mouth.

From The New Yorker • Dec. 21, 2015