The beam angle (also called the beam angle or light beam angle ) refers to the spread of light emitted by a light source. It is the angle at which the light is spread out from the light source. The wider the beam angle, the larger the area illuminated, while a narrower beam angle keeps the light more concentrated, resulting in focused and more intense illumination.
Importance of the beam angle:
- Wide beam angle : A wide beam angle ensures that the light is distributed over a large area. This is often used for general lighting, such as ceiling lights or ceiling fixtures in living rooms or offices.
- Narrow beam angle : A narrower beam angle creates a focused beam of light, ideal for accent lighting or task lighting, such as in spotlights, floodlights, or reading lamps.
How is the beam angle expressed?
The beam angle is usually expressed in degrees (°) . The angle indicates how far the light extends. For example:
- 35° beam angle: This is a narrow angle, suitable for directional lighting such as spotlights.
- 120° Beam Angle: This is a wider angle, ideal for illuminating larger areas or for general lighting.
Example:
- Spotlights : A spotlight often has a beam angle of, for example , 15° to 30° , which allows the light to be concentrated on a small area.
- Recessed lights or ceiling lights : These can have a beam angle of 60° to 120° , so they provide wider illumination that lights up a larger space.
Summary:
The beam angle indicates how wide or narrow a lamp's beam is. A wider beam angle means the light is distributed over a larger area, while a narrower beam angle concentrates the light for targeted illumination. Choosing the right beam angle depends on the application and the desired light distribution in the room.