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Beam Angle

Also known as beam spread, the beam angle is a value that describes the downward light cone emitted by a lighting fixture with a reflector.

Also known as beam spread, the beam angle is a value that describes the downward light cone emitted by a lighting fixture with a reflector. The beam angle is measured between the downward direction, where the lamp provides maximum lighting intensity, and the direction in which intensity drops to 50%. In other words, a lamp with a large beam angle spread its lighting into a wider cone.

Key Terms

beam angle
beam spread
definition
downward light cone
intensity
lamp
lighting fixture
reflector
usage
value

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Synonymns

Beam Angle
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Last modified on December 1 2019
Content adapted from Wikipedia
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