optical aberration


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Related to optical aberration: spherical aberration

optical aberration

[′äp·tə·kəl ‚ab·ə′rā·shən]
(optics)
Deviation from perfect image formation by an optical system; examples are spherical aberration, coma, astigmatism, curvature of field, distortion, and chromatic aberration. Also known as aberration.
References in periodicals archive ?
This section presents the overall design process of a CE optical system; optical system design methods can be divided into the following steps: (1) determining the optical uses of the system, (2) setting design indicators, (3) selecting initial structure, (4) correcting optical aberrations, and (5) testing and inspecting performance.
Using iris hooks in small pupils and inducing iatrogenic Mydriasis leads to alarming reflections and optical aberrations.
Optical aberrations that are introduced by the objective lens in the sample arm can degrade the resolution of the imaging system.
Optical aberrations are inherently included in the ray-tracing process but diffraction limit is ignored.
27 -- Harvard's School of Engineering and Applied Sciences (SEAS) has come up with a flat silicon-based lens that can focus light without any distortion or optical aberrations, such as those found with even the best made curved glass lenses.
The FK14.5-60 wide-angle cine zoom and the FK30-300 telephoto cine zoom are both precision-matched lenses that incorporate "breakthrough" Canon optical designs which optimise and enhance multipleimaging attributes, while minimising optical aberrations and distortions.
It is typically recommended to people with optical aberrations on the cornea.
The system uses an adaptive optics system to automatically measure the optical aberrations in the eye with a wavefront sensor and rapidly compensates for these aberrations with a wavefront corrector, increasing lateral resolution by an order of magnitude.
Research has shown that at typical interior light levels, lighting is sufficiently high so that the decrease in optical aberrations of the eye caused by a smaller pupil usually more than compensates for the small loss in retinal light quantity.
The specimen can be tilted to provide different surfaces for examination, and the software includes compensation for optical aberrations.
A flat surface, when tilted, appears non-flat as a consequence of optical aberrations. For our PSI, viewing a 40-mm long region of a flat surface and using a typical zoom setting, the primary effect of distortions is to make the surface appear convex or concave depending on which direction the surface is tilted.
Tilt is a major contributor to optical aberrations; hence, a sealed airsandwich has limited altitude specifications.