Photometric Data Sheet
| Luminaire | Half Bulk - Wall Surface, 90 deg | Lamp / LED | Integrated LED module |
|---|---|---|---|
| Luminous flux | 1,440 lm | Input power | 12.0 W |
| Efficacy | 120.0 lm/W | CCT | |
| CRI | >90 | BUG rating (TM-15-11) | B1-U0-G0 |
| Beam angle (50% Imax) | 90.0° | Field angle (10% Imax) | 130.2° |
| Voltage | AC220~240V |
| Distribution | Direct, rotationally symmetric | Maximum intensity | 710.5 cd |
|---|---|---|---|
| At angle | 0° V | Luminous shape | Circular |
| Luminous size | 275 mm dia. | Spacing/height (nominal) | 4.30 |
Polar distribution, rotationally symmetric. 0° is straight down.
| Zone | Lumens | % of total |
|---|---|---|
| 0–30° | 561 | 38.9% |
| 0–60° | 1,328 | 92.2% |
| 0–90° (total) | 1,440 | 100.0% |
Flux emitted within each downward cone. 72% of the total falls inside the rated beam angle.
| Zone | Back lm | Front lm |
|---|---|---|
| Low 0–30° | 280 | 280 |
| Mid 30–60° | 384 | 384 |
| High 60–80° | 50 | 50 |
| Very high 80–90° | 6 | 6 |
| 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° | 710.5 | 46° | 337.0 |
| 1° | 710.5 | 47° | 318.8 |
| 2° | 710.5 | 48° | 300.7 |
| 3° | 710.4 | 49° | 282.9 |
| 4° | 710.3 | 50° | 265.4 |
| 5° | 710.1 | 51° | 248.2 |
| 6° | 709.8 | 52° | 231.5 |
| 7° | 709.4 | 53° | 215.3 |
| 8° | 708.9 | 54° | 199.6 |
| 9° | 708.1 | 55° | 184.4 |
| 10° | 707.2 | 56° | 170.0 |
| 11° | 706.0 | 57° | 156.1 |
| 12° | 704.5 | 58° | 143.0 |
| 13° | 702.7 | 59° | 130.6 |
| 14° | 700.6 | 60° | 118.9 |
| 15° | 698.0 | 61° | 108.0 |
| 16° | 695.1 | 62° | 97.8 |
| 17° | 691.7 | 63° | 88.4 |
| 18° | 687.9 | 64° | 79.7 |
| 19° | 683.5 | 65° | 71.6 |
| 20° | 678.6 | 66° | 64.3 |
| 21° | 673.2 | 67° | 57.7 |
| 22° | 667.1 | 68° | 51.6 |
| 23° | 660.4 | 69° | 46.2 |
| 24° | 653.1 | 70° | 41.3 |
| 25° | 645.1 | 71° | 37.0 |
| 26° | 636.4 | 72° | 33.1 |
| 27° | 627.0 | 73° | 29.7 |
| 28° | 617.0 | 74° | 26.7 |
| 29° | 606.2 | 75° | 24.1 |
| 30° | 594.7 | 76° | 21.8 |
| 31° | 582.5 | 77° | 19.8 |
| 32° | 569.7 | 78° | 18.0 |
| 33° | 556.2 | 79° | 16.5 |
| 34° | 542.0 | 80° | 15.2 |
| 35° | 527.2 | 81° | 14.1 |
| 36° | 511.8 | 82° | 13.2 |
| 37° | 495.9 | 83° | 12.3 |
| 38° | 479.5 | 84° | 11.6 |
| 39° | 462.6 | 85° | 11.0 |
| 40° | 445.3 | 86° | 10.4 |
| 41° | 427.7 | 87° | 9.9 |
| 42° | 409.8 | 88° | 9.5 |
| 43° | 391.8 | 89° | 9.1 |
| 44° | 373.5 | 90° | 0.0 |
| 45° | 355.3 |
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 | 178 | 160 | 113 | 64 | 31 | 4.0 m |
| 2.5 m | 114 | 106 | 86 | 59 | 36 | 5.0 m |
| 3.0 m | 79 | 75 | 65 | 50 | 35 | 6.0 m |
| 3.5 m | 58 | 56 | 50 | 42 | 32 | 7.0 m |
| 4.0 m | 44 | 43 | 40 | 35 | 28 | 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.