beam spread

beam spread

[′bēm ‚spred]
(engineering)
The angle of divergence from the central axis of an electromagnetic or acoustic beam as it travels through a material.

beam spread

The angle between two directions (on opposite sides of the axis of a light beam, and in the same plane as the beam axis) in which the light intensity equals a stated percent of a maximum reference intensity.
References in periodicals archive ?
Retrofitting a sign box is very challenging, most of the time retrofitters or sign manufacturers must use 2 LED tubes one on each side because LED tubes only project a 180 degree beam spread.
With several lumen packages, beam spread, color temperature and finish options, and the choice between multi-optic versus single-optic COB products--we offer more than 300 variations of personalization standard.
The double-flanged style reduces pallet rack beam spread by lying on top of 1.
Calculators such as "Light Calc" and "BeamCalc" compute everything from throw distance, illuminance levels and LPD, to CRI, CCT and beam spread.
Two offset LED assemblies within the fixture allow this lamp to provide a 100-degree horizontal beam spread and 140-degree vertical beam spread.
Also, its beam spread and color made it perceptively our top choice in this category of lights.
It also maintains many of the features of the original F8-100, including an adjustable beam spread (16-70 degrees) and Zylight's patented focusing system for spot and flood operations.
The rise time is 1 nanosecond; the laser beam spread is 9 x 25[degrees]; and the duty cycle (DC) is 0.
The floodlights provide a Nema 6 x 7 beam spread for broad light distribution.
T HE FRONT grille features Chevy's famous ' bow- tie' theme; the front lights are big clearlens projection units with an excellent beam spread, though high- intensity discharge ( HID) lamps are missing in action, though the feature that is now standard in this segment.
This LED fixture contains seven 3 watt LEDs and produces 1,750 lumens, creating a light beam capable of reaching 675 feet in length without the wide beam spread normally produced by LED spotlights.