The field angle defines the outer area in the light circle where the lamp radiates up to one tenth (10%) of its maximum luminous intensity. Light intensity in beam angle and field angle You can find the mathematical relationship between beam angle, distance and diameter below: The beam angle has a direct influence on how large the produced light cone appears in the room. Depending on the distance between the lamp and the floor or the illuminated surface, this creates a light cone with a corresponding diameter. The beam angle indicates the angle at which the luminous flux passes out of the LED spotlight. They emit their entire luminous flux in only one specific direction. ![]() ![]() LED spotlights, on the other hand, are directional light sources. Omnidirectional spotlights emit their light evenly distributed in all directions. LED luminaires and illuminants have both omnidirectional and directional light sources.
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