spherochromatism

spherochromatism

[¦sfir·ō′krō·mə‚tiz·əm]
(optics)
The variation of chromatic aberration with color of light.
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References in periodicals archive ?
The "SVA" designation indicates an advanced optical design made with a super-low-dispersion ED glass center element and a Lanthanum rare-earth rear element to correct for spherochromatism.
Under the critical and telling star test, the Nighthawk showed only a touch of spherical aberration, most likely from the spherochromatism that almost every fast refractor exhibits to some degree.