Glare of lighting terms

Glare is a visual phenomenon that causes uncomfortable sensations or diminishes the ability to observe details or objects due to inconsistencies in the brightness distribution or range of brightness in the field of view, or extreme contrasts.

Direct glare is the glare generated by the illuminant in the field of view, particularly in the direction of the line of sight.

Uncomfortable glare produces a discomfort that does not necessarily reduce the visibility of the visual object.

The uniform glare value is a psychological parameter that measures the subjective response caused by the light emitted by the lighting device in the visual environment to the discomfort caused by the human eye, and the value thereof can be calculated according to the CIE uniform glare value formula.

Glare value It is a psychological parameter that measures the subjective reaction of outdoor stadiums and other outdoor venue lighting devices to the discomfort caused by human eyes. The value can be calculated according to the CIE glare value formula.

Reflection glare The glare caused by reflection in the field of vision, especially the glare produced by seeing the reflection image in the direction of the line of sight.

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