Photometric Data Sheet
| Luminaire | Gloucester - Street Lights, 30 deg | Lamp / LED | Integrated LED module |
|---|---|---|---|
| Luminous flux | 5,523 lm | Input power | 70.0 W |
| Efficacy | 78.9 lm/W | CCT | |
| CRI | >90 | BUG rating (TM-15-11) | B4-U0-G0 |
| Beam angle (50% Imax) | 30.0° | Field angle (10% Imax) | 50.2° |
| Voltage | AC220~240V |
| Distribution | Direct, rotationally symmetric | Maximum intensity | 19,621.7 cd |
|---|---|---|---|
| At angle | 0° V | Luminous shape | Circular |
| Luminous size | 503 mm dia. | Spacing/height (nominal) | 0.94 |
Polar distribution, rotationally symmetric. 0° is straight down.
| Zone | Lumens | % of total |
|---|---|---|
| 0–30° | 5,298 | 95.9% |
| 0–60° | 5,494 | 99.5% |
| 0–90° (total) | 5,523 | 100.0% |
Flux emitted within each downward cone. 56% of the total falls inside the rated beam angle.
| Zone | Back lm | Front lm |
|---|---|---|
| Low 0–30° | 2,649 | 2,649 |
| Mid 30–60° | 98 | 98 |
| High 60–80° | 12 | 12 |
| Very high 80–90° | 2 | 2 |
| Uplight 90–100° / 100–180° | 0 / 0 | |
Backlight, Uplight and Glare classes from the zone lumens, IES TM-15-11 limits. Calculated from this distribution.
Centre-beam illuminance and beam diameter on a surface directly below.
| γ | cd | γ | cd |
|---|---|---|---|
| 0° | 19,621.7 | 46° | 40.0 |
| 1° | 19,598.1 | 47° | 38.0 |
| 2° | 19,502.0 | 48° | 36.1 |
| 3° | 19,313.0 | 49° | 34.5 |
| 4° | 19,019.8 | 50° | 32.9 |
| 5° | 18,616.1 | 51° | 31.4 |
| 6° | 18,100.0 | 52° | 30.0 |
| 7° | 17,474.0 | 53° | 28.6 |
| 8° | 16,743.9 | 54° | 27.3 |
| 9° | 15,919.1 | 55° | 26.0 |
| 10° | 15,012.1 | 56° | 24.8 |
| 11° | 14,037.5 | 57° | 23.6 |
| 12° | 13,012.2 | 58° | 22.4 |
| 13° | 11,953.8 | 59° | 21.3 |
| 14° | 10,880.7 | 60° | 20.2 |
| 15° | 9,810.8 | 61° | 19.2 |
| 16° | 8,761.2 | 62° | 18.2 |
| 17° | 7,747.3 | 63° | 17.2 |
| 18° | 6,782.6 | 64° | 16.3 |
| 19° | 5,878.0 | 65° | 15.4 |
| 20° | 5,042.1 | 66° | 14.5 |
| 21° | 4,280.5 | 67° | 13.7 |
| 22° | 3,596.3 | 68° | 12.9 |
| 23° | 2,990.2 | 69° | 12.2 |
| 24° | 2,460.7 | 70° | 11.4 |
| 25° | 2,004.4 | 71° | 10.8 |
| 26° | 1,616.5 | 72° | 10.1 |
| 27° | 1,291.4 | 73° | 9.5 |
| 28° | 1,022.4 | 74° | 8.9 |
| 29° | 803.0 | 75° | 8.3 |
| 30° | 626.3 | 76° | 7.8 |
| 31° | 485.9 | 77° | 7.3 |
| 32° | 375.9 | 78° | 6.8 |
| 33° | 290.7 | 79° | 6.4 |
| 34° | 225.5 | 80° | 5.9 |
| 35° | 176.3 | 81° | 5.5 |
| 36° | 139.5 | 82° | 5.1 |
| 37° | 112.3 | 83° | 4.8 |
| 38° | 92.2 | 84° | 4.4 |
| 39° | 77.5 | 85° | 4.1 |
| 40° | 66.8 | 86° | 3.8 |
| 41° | 58.9 | 87° | 3.5 |
| 42° | 53.0 | 88° | 3.3 |
| 43° | 48.6 | 89° | 3.0 |
| 44° | 45.1 | 90° | 0.0 |
| 45° | 42.3 |
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 | 4,905 | 2,475 | 256 | 15 | 4 | 1.1 m |
| 2.5 m | 3,139 | 2,070 | 478 | 50 | 6 | 1.3 m |
| 3.0 m | 2,180 | 1,653 | 606 | 114 | 16 | 1.6 m |
| 3.5 m | 1,602 | 1,318 | 640 | 183 | 36 | 1.9 m |
| 4.0 m | 1,226 | 1,061 | 619 | 237 | 64 | 2.1 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.