IEVref:731-01-35ID:
Language:enStatus: Standard
Term: beamwidth
Synonym1: beam diameter
[Preferred]
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Definition: distance between two diametrically opposed points where the irradiance is a specified fraction of the beam's peak irradiance

Note 1 to entry: The concept is most commonly applied to beams that are circular or nearly circular in cross-section.

Note 2 to entry: The term "beamwidth" has different meanings in relation to antennae (see IEV 712-02-33) and in the field of ultrasonics (see IEV 802-01-20).


Publication date:2021-04
Source
Replaces:731-01-35:1991-10
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