For a calculation with your own individual values you can use the online calculator. The table gives you an overview of the diameter of the light circle with different beam angles and a ceiling height of 8 feet. Meaning of a beam angle of 15°, 60° or 120° degrees The actual beam angle of that lamp would therefore be smaller. A GU10 lamp with a 120° beam angle would probably be screened with a small opening of the lamp glass. The state of the luminaire or the lamp glass where the GU10 lamp is used is also important. Here not only the beam angle of the illuminant plays a role. GU10 LED illuminants are also available with different beam angles. The angle should be selected according to the application as described above. These are offered with many different beam angles. LED spots are available in different variants, for example for ceiling installation or surface mounting.

The beam angle calculator helps you to determine the correct angle. Also here the beam angle depends on the diameter of the object and the distance to the light source.

Here, the beam angle must be selected individually, depending on the size of the area to be emphasized.ĭecorative lighting is often used to highlight certain objects in a room. This can be a sitting area or a colored wall. For corridors and pathways within a room, a beam angle of 90° is more recommended.Īccent lighting is used to highlight certain areas in a room. In the living area there are mainly these three lighting applications:Ī beam angle of 120° is a good choice for the basic lighting of a room. The beam angle should be chosen according to the location or use-case before purchasing the LED lamp. These include LED spots or LED spotlights and GU10 illuminates. The beam angle is primarily interesting for directional light sources. The beam angle should therefore always be chosen in conjunction with the desired brightness according to the surface to be illuminated. For this reason, the illuminated surface appears larger but also much darker. The spotlight with a beam angle of 60° must illuminate a much larger area with the same light output as the 15° spotlight. However, if both spotlights have different beam angles, about 15° and 60°, this puts the perceived brightness into perspective. If we compare two LED spots with an identical light output of 600 lumens, according to the data sheet they seem to have the same brightness. The brightness of LED lamps is given in lumens. There is also a direct correlation between the beam angle and the brightness of an LED lamp. But if the spotlight is taken back from the wall, the light circuit becomes larger and larger. If an LED spotlight is not far away from a wall for example, only a small dotted light circle will be visible.

An important factor here is also the distance between the light source and the illuminated object. The beam angle determines how large the generated light circle appears on the illuminated object. Even outside the field angle it is not completely dark, small parts of the luminous intensity are still emitted here as scattered light. 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. The mathematical relationship between beam angle, distance and diameter can be found 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. Conclusion: The optical impression is important.Meaning of a beam angle of 15°, 60° or 120° degrees.

Led light table measurement