Translation for 'spherical aberration' from English to Romanian

spherical aberration

aberație {f} sfericăoptică

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spherical

sferic {adj}

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spherical wave

undă {f} sfericăfiz.

chromatic aberration

aberație {f} cromaticăoptică

spheric aberration

aberație {f} sfericăoptică

• In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces.
• James Gregory went into further detail in his book "Optica Promota" (1663), pointing out that a reflecting telescope with a mirror that was shaped like the part of a conic section, would correct spherical aberration as well as the chromatic aberration seen in refractors.
• The basic Ritchey–Chrétien two-surface design is free of third-order coma and spherical aberration.
• In contrast with spherical reflectors, which suffer from a spherical aberration that becomes stronger as the ratio of the beam diameter to the focal distance becomes larger, parabolic reflectors can be made to accommodate beams of any width.
• An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration.

• Lenses that are poorly corrected for spherical aberration will show one kind of disc for out-of-focus points in front of the plane of focus, and a different kind for points behind.
• The outer has a parabolic surface, countering the effects of spherical aberration while allowing a sharp image to be formed.
• The resolution of TEMs is limited primarily by spherical aberration, but a new generation of hardware correctors can reduce spherical aberration to increase the resolution in high-resolution transmission electron microscopy (HRTEM) to below 0.5 angstrom (50 picometres), enabling magnifications above 50 million times.
• Soft focus lenses introduce spherical aberration deliberately into the optical formula for an ethereal effect considered pleasing, and flattering to subjects with less than perfect complexions.
• The spherical aberration problem with the spherical cat's eye can be solved in various ways, one being a spherically symmetrical index gradient within the sphere, such as in the Luneburg lens design.

• The small chip also means that the collimating optics need not to be optimized for coma or astigmatism, but the spherical aberration can be set to zero.
• Some manufacturers market reflector sight models they call "parallax free," but this refers to an optical system that compensates for off axis spherical aberration, an optical error induced by the spherical mirror used in the sight that can cause the reticle position to diverge off the sight's optical axis with change in eye position.
• Spherical mirrors do not reflect parallel rays to rays that converge to or diverge from a single point, or vice versa, due to spherical aberration.
• Several types of aberration affect image quality, including spherical aberration, coma, and chromatic aberration.