| Primary value | 500 - 750 lux |
| Applies to | Conference rooms · Meeting rooms · Board rooms |
| Exceptions | Video conferencing → Higher front lighting required |
| Measured as | Average maintained illuminance on the table surface. |
| Source | NBC 2016 — Part 8, Section 1, Table 1 ✓ Verified |
Conference rooms need brighter light than general offices because participants read documents, write notes, and interact face-to-face — all activities that benefit from clear visibility.
Modern conference rooms use dimmable LED ceiling fixtures providing 500-700 lux with the option to dim for projection sessions.