Property
Visible light transmittance v1.0
Active
URL: https://opendictionary-ecstest.test-bim.com/organization/25869347-9422-4528-ac1c-65954fa4061d/dictionary/83b40007-fcbf-4120-9133-34ad346b1a12/property/c303baf7-69c2-44e7-9bcf-f0b2371b9d46
GUID: 9e507901-50e6-44fb-a24b-2e57839c1519
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