Definitions for "Visible Light Transmittance"
The fraction of solar radiation in the visible light spectrum that passes through the fenestration.
The ratio of the amount of total visible solar energy (380-780 nanometers) that is allowed to pass through a glazing system to the amount of visible solar energy falling on the glazing system. Value is usually expressed as a percent. Glare is influenced by visible light through a glazing system.
The percentage of visible light (390 to 770 nanometers) within the solar spectrum that is transmitted through glass.