LED Beam Angle - 30 Degree 60 Degree or 120 Degree? If you are replacing existing halogen downlights, and spacing cannot be changed a beam width of 60 degrees is more than acceptable on 2400mm ceilings. If you are installing LED Lighting during a new house build or renovation, the rule of thumb is that on taller ceilings you use a narrower beam, (30 degrees) and on a lower ceiling or bulkhead use a wider beam (60 or 100 degrees). The beam should cross at about 1100mm above floor level, for even light distribution. On a globe with a 60 degree beam this would mean an optimum spacing of 1200mm. Definition of Light Bulb Beam Angle The beam angle is the degree of width that light emits from a light source. In specific terms this is the angle between the opposing points on the beam axis where the intensity drops to 50% of its maximum. LED lamps come with a variety of descriptions for the beam angle. A wide beam angle ‘floods’ an area with light and is called a flood light where as a narrow beam angle is a ‘spot’ of light, hence spot light. LED lamp beam angles are not used consistently by light bulb manufacturers. Not all lamps use the same terms.
Posted on: Thu, 22 Aug 2013 03:55:13 +0000
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