optical aberration


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Related to optical aberration: spherical aberration

optical aberration

n.
The failure of light rays from a point source to form a perfect image after passing through an optical system.
References in periodicals archive ?
The addition of the fourth lens changed the overall structure, which increased optical aberration and lowered overall optical system performance.
The more-advanced instruments are being designed to include built-in corrections for the primary mirror's optical aberration.
The aim of this study was to assess the optical aberration results of hydrophobic acrylic AMO Sensar AR40E and hydrophobic acrylic Alcon AcrySof SA60AT intraocular lenses after implantation in cases with bilateral cataract.
If, instead, due to poor collimation, your eyepiece is aimed away from the center, the image will be blurred by an optical aberration called coma.
Suiter, in his seminal book Star Testing Astronomical Telescopes (Willmann-Bell), indicates that there is no absolute CFZ, and derives an expression relating focuser movement to the resulting number of acceptable wavelengths of optical aberration:
While examining it closely, S&T assistant editor Sean Walker noticed that the brighter stars exhibit a uniform triangular distortion reminiscent of a common optical aberration in many reflecting telescopes.
It provides a correction of the most common optical aberrations at large amplitude and with high precision.
CER systems are generally less robust than CCR due to high precision required in lens positioning, potential optical aberrations and quite severe limitations on field of view.
The Contemporary uses one FLD and three SLD glass elements to minimise chromatic and other optical aberrations. www.sigma-imaging-uk.com
Pre-op counselling, understanding patient's personality profile, visual requirement in their day to day life, expectation of individual patients etc is essential., Monofocal patients never face situations of optical aberrations, need for enhancement etc.
"We can look at your very specific eye errors and can make, at a low cost, an entirely customized set of optics that would allow you to get to something called 'supervision.' Most people see 20/20, but they could generally see better than 20/20 if all of their optical aberrations were corrected."
The distortions in the image of this "guide star" tell the team the nature of the optical aberrations along either pathway.