In optics, aberration is a property of optical systems, such as lenses, that causes light to be spread out over some region of space rather than focused...

In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces. This phenomenon commonly...

chromatic aberration have different characteristics, and may occur together. Axial CA occurs throughout the image and is specified by optical engineers...

the coma (/ˈkoʊmə/), or comatic aberration, in an optical system refers to aberration inherent to certain optical designs or due to imperfection in...

other optical system, suffers from a number of specific optical aberrations. The optical quality of the eye is limited by optical aberrations, diffraction...

Defocus aberration, in which an image is out of focus Optical aberration, an imperfection in image formation by an optical system Relativistic aberration, the...

third-order aberration, which occurs for objects (or parts of objects) away from the optical axis. This form of aberration occurs even when the optical system...

conditions. Simple lenses are subject to the optical aberrations discussed above. In many cases these aberrations can be compensated for to a great extent...

curvature, named for Joseph Petzval, describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object past the hyperfocal...

(corrector plate) and mirror as primary optical elements, mainly used for wide field imaging without spherical aberration.[citation needed] The late 20th century...