How to choose the right diffusion angle?


The angle of opening, the angle of radiation of lights

The scattering angle quantifies the visual intensity of luminous flux. The measurement of the angle of aperture of a light beam - expressed in degrees (in the form "°" or "D") - is made from the point where the light source produces its maximum luminous intensity. That is the center, up to a loss of 50%.
Thus, the smaller the scattering angle obtained via a reflector, the more intense and directional the scattered light will be. While a wide diffusion angle will produce a softer and diffused light.
Broadcast angles and applications
  •       Less than 30 ° - accent lighting used mainly in professional applications in shops, art exhibitions, museums, etc.
  •      Between 30 ° and 45 ° - Directional lighting, the most common, for the enhancement of a particular object or area. This is the standard accent lighting.
  •         Between 45 ° and 60 ° - directional lighting that provides a light intensity that is not too directive or too broad.
  •       Greater than 60 ° - General lighting for diffusion of light on the floor and walls without ceiling lighting, therefore without loss of brightness.

lights beam angles

Examples
Cooked. Accent lighting is required above the work surfaces by positioning spotlights with 35 ° to 40 ° diffusion angles.
Stay. Wide diffusion spotlights, from 90 ° to 120 °, are a good compromise to create uniform general lighting throughout the room.

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