Property
Visible light transmittance v1.0
Active
URL: https://opendictionary-ecstest.test-bim.com/organization/25869347-9422-4528-ac1c-65954fa4061d/dictionary/4c7cdaf6-c405-44bf-9080-8359697e1668/property/804a2d56-f9fc-404d-bb3b-72cd3b53e8b9
GUID: 95676e8e-e9ab-4453-9ce7-55fe76acf9ad
Definition
The exact mathematical percentage of incident electromagnetic radiation within the human visual spectrum (380–740 nm) that successfully passes through a transparent or translucent barrier.
Description
The primary architectural metric for calculating natural daylight autonomy, reducing reliance on artificial lighting grids, and optimizing occupant visual comfort.
Example
70
Technical definition
Data type
Float
Unit
Percent (%)
Quantity Kind
Reflectance
Usage
Property groups (1)
References
Reference documents (1)
- EN 410 Glass Light and Solar Transmission v1.0