Photometric Data Sheet
| Luminaire | Brighty II - Panel Lights, 90 deg | Lamp / LED | Integrated LED module |
|---|---|---|---|
| Luminous flux | 4,000 lm | Input power | 40.0 W |
| Efficacy | 100.0 lm/W | CCT | |
| CRI | >90 | UGR | <19 |
| Beam angle (50% Imax) | 90.0° | Field angle (10% Imax) | 130.2° |
| Voltage | AC220~240V |
| Distribution | Direct, rotationally symmetric | Maximum intensity | 1,973.7 cd |
|---|---|---|---|
| At angle | 0° V | Luminous shape | Circular |
| Luminous size | 1,195 mm dia. | Spacing/height (nominal) | 4.30 |
Polar distribution, rotationally symmetric. 0° is straight down.
| Zone | Lumens | % of total |
|---|---|---|
| 0–30° | 1,557 | 38.9% |
| 0–60° | 3,688 | 92.2% |
| 0–90° (total) | 4,000 | 100.0% |
Flux emitted within each downward cone. 72% of the total falls inside the rated beam angle.
Centre-beam illuminance and beam diameter on a surface directly below.
| γ | cd | γ | cd |
|---|---|---|---|
| 0° | 1,973.7 | 46° | 936.1 |
| 1° | 1,973.6 | 47° | 885.5 |
| 2° | 1,973.6 | 48° | 835.4 |
| 3° | 1,973.4 | 49° | 785.9 |
| 4° | 1,973.1 | 50° | 737.2 |
| 5° | 1,972.6 | 51° | 689.6 |
| 6° | 1,971.8 | 52° | 643.1 |
| 7° | 1,970.6 | 53° | 598.0 |
| 8° | 1,969.1 | 54° | 554.3 |
| 9° | 1,967.0 | 55° | 512.3 |
| 10° | 1,964.3 | 56° | 472.1 |
| 11° | 1,961.0 | 57° | 433.7 |
| 12° | 1,956.9 | 58° | 397.3 |
| 13° | 1,951.9 | 59° | 362.8 |
| 14° | 1,946.0 | 60° | 330.4 |
| 15° | 1,939.0 | 61° | 300.0 |
| 16° | 1,930.9 | 62° | 271.7 |
| 17° | 1,921.5 | 63° | 245.5 |
| 18° | 1,910.8 | 64° | 221.3 |
| 19° | 1,898.7 | 65° | 199.0 |
| 20° | 1,885.1 | 66° | 178.7 |
| 21° | 1,869.9 | 67° | 160.2 |
| 22° | 1,853.1 | 68° | 143.4 |
| 23° | 1,834.5 | 69° | 128.3 |
| 24° | 1,814.1 | 70° | 114.8 |
| 25° | 1,791.9 | 71° | 102.7 |
| 26° | 1,767.8 | 72° | 92.0 |
| 27° | 1,741.8 | 73° | 82.6 |
| 28° | 1,713.8 | 74° | 74.2 |
| 29° | 1,683.9 | 75° | 66.9 |
| 30° | 1,652.0 | 76° | 60.5 |
| 31° | 1,618.2 | 77° | 55.0 |
| 32° | 1,582.5 | 78° | 50.1 |
| 33° | 1,544.9 | 79° | 46.0 |
| 34° | 1,505.5 | 80° | 42.3 |
| 35° | 1,464.4 | 81° | 39.2 |
| 36° | 1,421.7 | 82° | 36.5 |
| 37° | 1,377.5 | 83° | 34.2 |
| 38° | 1,331.8 | 84° | 32.2 |
| 39° | 1,285.0 | 85° | 30.4 |
| 40° | 1,237.0 | 86° | 28.9 |
| 41° | 1,188.1 | 87° | 27.5 |
| 42° | 1,138.5 | 88° | 26.3 |
| 43° | 1,088.2 | 89° | 25.3 |
| 44° | 1,037.6 | 90° | 0.0 |
| 45° | 986.8 |
Candela at each vertical angle, C0-C180 plane.
| Mounting height | centre | 0.5 m | 1.0 m | 1.5 m | 2.0 m | Beam Ø |
|---|---|---|---|---|---|---|
| 2.0 m | 493 | 444 | 314 | 177 | 87 | 4.0 m |
| 2.5 m | 316 | 296 | 238 | 163 | 99 | 5.0 m |
| 3.0 m | 219 | 210 | 181 | 139 | 97 | 6.0 m |
| 3.5 m | 161 | 156 | 140 | 116 | 89 | 7.0 m |
| 4.0 m | 123 | 120 | 111 | 96 | 78 | 8.0 m |
Horizontal illuminance directly below the fitting (centre) and at each radial offset, for a single fitting. Use it to judge spacing for uniform light. Point-source projection, E = I·cosθ / D².