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Avoiding glare

Mar 23, 2021

Avoiding glare

Glare is caused by the contrast between bright and dark areas or objects. For example, if one luminaire is installed in a room, the occupant may think that glare is a problem. However, if 6 lamps are installed, they may not consider glare as a problem. This is because the darker environment becomes brighter and the contrast decreases.

Glare can be minimized by:

1. Reduce the contrast. For example, paint the background wall white.

2. Add additional lighting equipment-illuminate the darker areas, which will minimize the contrast between the darker and brighter areas.

3. Reduce light (lumens) output-additional lamps may be needed to compensate for the loss of light.

4. The location of the luminaires-if the luminaires are evenly distributed on the area to be illuminated.

5. Aiming-If the direction of the lamp is aligned with the normal viewing angle of the occupant, the contrast will be reduced.

6. Protective cover for lighting equipment-add a protective cover/baffle or make natural objects (hedges, flowers, etc.) stand between the lighting equipment and the occupants.

7. Establish a distance-if the light fixture is moved away (for example, use on a higher pole).

8. Change the color of the light source-for example, generally, warm white light (such as 3K) is considered to cause less glare (but the effect is also worse) than cool white light (such as 5K).