Beam Cone & Spot Diameter
AllSee the illuminance and floor diameter a beam angle, lumen output and mounting height produce.
Beam Angle (°)
lm
m
- Centre Illuminance
- 377 lx
- Edge Illuminance
- 162 lx
- Beam Diameter
- 1.62 m
- Centre Intensity
- 2,358 cd
Values by Height
| Height | Diameter | Centre Lux |
|---|---|---|
| 1.5 m | 0.97 m | 1,048 lx |
| 2 m | 1.3 m | 589 lx |
| 2.5 m | 1.62 m | 377 lx |
| 3 m | 1.95 m | 262 lx |
| 4 m | 2.6 m | 147 lx |
A spot fixture's beam angle and mounting height directly determine the diameter of the illuminated circle on the floor and the illuminance at its centre. This tool uses the same cosⁿ light distribution model as our catalogue's photometric data to calculate centre and edge illuminance and beam diameter — helpful when planning how many fixtures a spot layout needs.