Led lights beam angle
Every light source from an LED to a simple wax candle has got a beam angle. but do you really know their exact definition and scope?
Beam Angle &Field Angle &LED Lens
Beam angle refers to the angle between the two planes of light where the intensity is at least 50% of the maximum intensity at center beam.
Field angle refers to the angle between the two planes of light where the intensity is 10% (or less) of the maximum intensity at center beam. This is sometimes referred to a ghosting or spill, it is not considered usable light. The type of lens used in the fixture will usually determine the amount of field angle or spill.
The beam angle is determined by the type of lens used in your LED fixture.
Beam Angle Classification
Led Work Light and Led Light Bar Beam Pattern