MetaGlossary.com: Beam Spread

Definitions for "Beam Spread" Add To Word List

Keywords: Candlepower, Reflector, Angle, Width, Plane

Related Terms: Beam , Coherent Light, Daylight, Diffuse , Incident, Laser Beam, Polarimeter, Reflector, Refract, Refraction, Spotlight, Total Internal Reflection, Diffraction Grating, Index Of Refraction, Ambient Light, Angle Of Reflection, Angle Of Refraction, Birefringence, Flood, Incident Light, Light Source, Baffle, Refractive Index, Directional Light, Airy Disc, Critical Angle, Polarized Light, Point Light, Law Of Reflection, Becke Line, Snell's Law, Diffused Light, Direct Lighting, Lighting Ratio, Snoot, Spot Light, Indirect Lighting, Floodlight, Beam Angle, Reflected Light, Ambient, Shade, Diffuse Lighting, Grism, Point Light Source, Retroreflector, Strehl Ratio, Collimated Light, Beam Divergence

Submit a better definition with this meaning

The width of the light beam from a reflector, the edge defined by the point at which light intensity is 50% of the maximum

http://www.smithvictor.com/reference/glossary.asp?s1=Glossary

Helpful?

The angle of a beam from a light source to the main area lighted; more specifically, the angle between the two vectors in which the light output is equal to a stated percent (usually 10%) of the maximum candlepower of the source.

http://www.morningstar-light.com/id87.html

Helpful?

The angle (in the plane through the beam axis) over which the luminous intensity drops to a stated percentage of its peak intensity.

http://www.thelightbulb.co.uk/glossary.php

Helpful?

The angle between the two directions in the plane in which the intensity is equal to a given percentage (usually 10 percent) of the maximum beam intensity.

http://cfa-www.harvard.edu/iau/nelpag/INFO09.html

Helpful?

The divergence of the sound beam as it travels through a medium. Specifically, the solid angle that contains the main lobe of the beam in the far field.

http://www.ndt-ed.org/GeneralResources/Glossary/letter/b.htm

Helpful?

A measure of the spread of light from a reflectorized light source. The beam spread may be narrow (narrow spot), wide (wide flood), or something in-between (narrow flood).

http://www.bobvila.com/GlossaryTerms/List/Word-B-Page-024.html

Helpful?

The total angle of the directed beam to where the intensity of the beam falls to 50% or 10% of the maximum candlepower value as indicated.

http://www.atrlighting.com/html/glossary.html

Helpful?

Microscale eddies, smaller than or about the same size as the beam width, which increase the cross-sectional area of the beam and decrease the intensity of its energy.

http://www.fas.org/spp/military/docops/afwa/metsat-glossary.htm

Helpful?

The diameter of the pattern of light produced by a lamp or lamp and luminaire together.

http://randallwhitehead.com/enlightenment/glossary.php

Helpful?

Lighting term: the area that a given lantern covers. It is usually expressed as the angle that the beam subtends at the focal plane: the smaller the angle, the narrower the beam.

http://www.actingresume.com/terminologypages/b.htm

Helpful?

The width of a light beam, expressed in degrees. The beam of light from a reflector-type lamp (PAR, R, ER, or MR) can be thought of as a cone. The beam spread is the angular width of the cone. Common beam spreads are known as spot, narrow, narrow flood, and flood.

http://www.lrc.rpi.edu/education/learning/glossary.asp

Helpful?

The width of the light aiming out of a bulb.

http://fun-n-profit.com/lighting_glossary.html

Helpful?

In any plane, the angle between the two directions in the plane in which the candlepower is equal to a stated percent of the maximum candlepower in the beam.

http://www.bulbman.com/index.php?main_page=infopages&pages_id=15

Helpful?

A measure of the angle of the light beam from a lamp with a reflector. This might be narrow spot, narrow flood, or wide flood.

http://glossary-of-terms.net/glossary-of-light-bulb-terms.html

Helpful?

The angle enclosed by two lines which intersect the candlepower distribution curve at the points where the candlepower is equal to ten percent of its maximum.

http://sitelighting.com/Glossary.cfm+Alpha+B

Helpful?

Privacy Statement | Terms of Use