Acceptance Angle

The maximum angle to the axis (centre line) of an optical fibre at which a light ray will enter the core and be propagated. Light striking the optical fibre at an angle greater than the Acceptance Angle will be lost.

Acceptance angle

[solar concentrator] Acceptance angle is the maximum angle at which incoming sunlight can be captured by a solar concentrator. Its value depends on the concentration of the optic and the refractive index in which the receiver is immersed. Maximizing the acceptance angle of a concentrator is desirable in practical systems and it may be achie...
Found on http://en.wikipedia.org/wiki/Acceptance_angle_(solar_concentrator)

acceptance angle

half the vertex angle of that cone within which optical power may be coupled into bound modes of an optical fibre NOTE 1 - Acceptance angle is a function of position on the entrance face of the core when the refractive index is a function of radius in the core. In that case, it is: where n (r) is the refractive index and n2 i...
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-03-84

Acceptance Angle

See angle of view.
Found on http://www.superglossary.com/Glossary/Entertainment/Photography/
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