spherical aberration


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Related to spherical aberration: coma aberration
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spherical aberration
Parallel light rays passing through a lens with a spherical surface focus at different points depending on whether they pass through the lens closer to the edge or closer to the center.

spherical aberration

n.
The blurring of an image that occurs when light from the margin of a lens or mirror with a spherical surface comes to a shorter focus than light from the central portion.

spherical aberration

n
(General Physics) physics a defect of optical systems that arises when light striking a mirror or lens near its edge is focused at different points on the axis to the light striking near the centre. The effect occurs when the mirror or lens has spherical surfaces. See also aberration4
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spherical aberration - an optical aberration resulting in a distorted imagespherical aberration - an optical aberration resulting in a distorted image
optical aberration, aberration, distortion - an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
References in periodicals archive ?
During testing, I found it to provide excellent resolution, a nice bright image, very neutral color rendition, and no detectable spherical aberration at the edges of the image.
Evaluation of corneal aberrations showed no difference between the spherical aberration RMS values of the normal group and the control group (p=0.
The beautiful pattern arises from a slight misalignment of the camera lenses, known as spherical aberration.
The eye exhibits positive corneal spherical aberration throughout life.
Adoption of three ED glass elements reduces chromatic aberration, and two aspherical lens elements provide effective compensation for a variety of aberrations, including distortion and spherical aberration.
Viewing on 1x and 6x I noted no internal flare, astigmatism, spherical aberration or curvature of field.
The vision, corneal spherical aberration (SphA) and Coma were recorded before LASIK and at 6 month and 4 year after LASIK.
Apparently the telescope suffers from a classic case of spherical aberration .
After the commercial introduction of spherical aberration corrections in TEMs, the main interest lay in the development and routine application of aberration-corrected wide-field TEM," says Don Kania, CEO of FEI.
The aspherical lenses suppress spherical aberration and distortion effectively while realising downsizA[degrees]ing of the lens unit.
Ball Aerospace built seven Hubble science instruments including the Corrective Optics Space Telescope Axial Replacement (COSTAR) instrument that corrected the spherical aberration of Hubble's primary mirror.
Existing lenses are not thin or flat enough to remove distortions, such as spherical aberration, astigmatism and coma, which prevent the creation of a sharp image.