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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
They have the form, fit and function to directly replace traditional halogen MR16 lamps and the unique optical design allows these lamps to deliver a highly efficient flood 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 1.625-inch step beams.
* 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.
For this reason the usage of 50 [micro]m target is proposed, for which the simulation showed that the relation [E.sub.[gamma],brems] + [E.sub.e+] = [E.sub.Beam] is fulfilled with a resolution better than the initial beam spread (1%).
The rise time is 1 nanosecond; the laser beam spread is 9 x 25[degrees]; and the duty cycle (DC) is 0.1 percent.
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.