| Prism | Cone | Semicircle bal | Semi ellipsoid |
Uniformity | 78% | 81% | 90% | 91% |
Luminous flux (W/m2) | 1829.1 | 2799.6 | 3120.4 | 3505.5 |
Failure width (mm) | 2 | 2 | 2 | 2 |