How to space ceiling fixtures

An even grid is a useful starting point, but spacing should account for mounting height, beam angle, obstacles and task zones. The ŚwiatłoTo planner handles geometry, not a photometric distribution.

Practical example

A 20 m² room with a 150 lx target needs 3,000 lumens reaching the plane. With UF 0.65 and MF 0.80, the sources need about 5,769 lm. Six 1,000 lm fixtures give an estimated 156 lx.

Limitations

The simplified model does not know fixture intensity curves, individual surface reflectance, obstacles, glare or uniformity. A construction-ready design requires photometric data and suitable software.