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 (ā-sfîr′ĭk, ā-sfĕr′-) also a·spher·i·cal (-ĭ-kəl)
Varying slightly from sphericity and having only slight aberration, as a lens.


(eɪˈsfɛr ɪ kəl, eɪˈsfɪər-)

also a•spher′ic,

(of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.aspherical - varying slightly from a perfectly spherical shape
optics - the branch of physics that studies the physical properties of light
rounded - curving and somewhat round in shape rather than jagged; "low rounded hills"; "rounded shoulders"
References in periodicals archive ?
This high image quality is made possible thanks to its advanced optical design featuring four aspherical lens elements, two of which are high precision AA (advanced aspherical) lenses.
For example, Leeuwenhoek's single glass spherical lens enabled him to watch red blood flow through capillaries; centuries later, Ernst Abbe's research into stereo microscopes and aspherical lenses improved magnification so scientists could see and study individual cells.
The glass is ground and polished to create an aspherical lens.
ISP manufactures in-house precision optical components including spherical, aspherical and diffractive coated infrared lenses.
Methods: One hundred thirty four eyes of 67 patients who underwent LASIK guided by aspherical ablation were included in this study.
Aspherical elements and Super-Low Dispersion glass reduce
The lens consists of 9 seperate elements, including an aspherical element, for extreme clarity, while Adobe DNG RAW support gives you the power to make every shot a masterpiece.
Like many contact lenses from the company/clearday Beyond'uses the company's patented Aquagrip technology and a multi-band aspherical design.
aspherical lenses allowing photographers to preview the effects of adjusting
The new lens system comA[degrees]prising of nine elements in seven groups uses three aspherical lenses.
The lens is comprised of 12 all-glass elements in 10 groups including 3 aspherical elements and 1 ED element.