In the left half of the left plot, specific illuminance by a continuous row of luminaires spaced 5 heights is shown (right half is for a single luminaire). | The right plot is for a single luminaire, unrotated. |
Values below the scale are illuminance / 1 lx. This is for (unrealistic) “unit” case that luminaires would have lamps producing 1 klm only, would be point-like and just 1 m over the terrain.
# IESNA91 # [TEST] LTL9486 # [MANUFAC] LITHONIA LIGHTING # [LUMCAT] KADT 250M SR4SC # [LUMINAIRE] AREA LIGHT WITH HIGH PERFORMANCE SR4SC OPTICS, CLEAR FLAT # [MORE] GLASS. # [LAMPCAT] M250/U # [LAMP] ONE 250-WATT CLEAR BT-28 METAL HALIDE, HORIZONTAL POSITION. # [_PRODUCTGROUP] OUTDOOR # [_INFOLINK] www.lithonia.com/visual/ies/ies.asp?vfile= # TILT=NONE # Bulbs: 1, 20000 lm each # Number of measured angles: 29 vertical, 21 horizontal ones # Photometric type: 1, Units type: 1 # Luminous opening width, length and height: 1.250 1.250 0.000 # Ballast factor: 1, Input power: 297 W # Source file: Lithonia_Lighting\Outdoor\Area\KADT\ltl9486A.ies # Luminaire flux = 7191 lm, # 36.0 % of the bulb flux # between 75 and 90: 4.3 % of the luminaire flux # - this part causes just GLARE in case of road lighting and similar purposes # 80deg and above: max 30.0 cd/1000lm , 0.5 % of the luminaire flux # 90deg and above: max 0.0 cd/1000lm , 0.0 % of the luminaire flux # CutOff Type: Full_CutOff # The following table gives luminous intensities which would be produced # using a hypothetic bulb giving a luminous flux of 1000 lm (i.e., cd/klm): # H: 0.0 5.0 15.0 25.0 35.0 45.0 55.0 65.0 75.0 85.0 90.0 95.0 105.0 115.0 125.0 135.0 145.0 155.0 165.0 175.0 180.0 #V: 0.0 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 88.3 5.0 93.3 94.3 94.1 94.2 93.3 94.3 92.4 92.7 92.0 89.6 89.8 88.3 86.8 83.5 79.6 76.4 72.8 69.5 67.7 64.4 66.2 10.0 95.8 98.3 96.6 95.6 96.2 95.8 94.3 94.7 94.3 92.2 91.2 88.5 82.1 72.2 59.1 46.7 38.3 31.5 28.3 25.8 27.1 15.0 100.8 101.2 101.2 99.8 97.4 97.2 97.1 97.4 95.3 93.9 92.8 88.5 77.3 57.8 37.7 24.0 14.8 9.7 9.6 7.8 7.5 20.0 106.9 107.2 104.3 102.8 98.5 97.7 95.6 93.3 89.3 86.2 85.9 78.9 61.2 37.5 19.8 10.4 6.2 4.3 3.3 5.0 5.8 25.0 112.4 111.2 109.5 105.9 101.7 99.9 96.0 91.3 87.4 83.8 79.9 74.8 49.5 22.9 9.8 4.6 3.8 2.5 3.0 3.4 3.4 30.0 121.1 119.5 119.2 113.9 106.4 101.6 98.5 91.3 89.1 84.2 81.4 70.8 41.8 14.4 5.2 3.2 1.1 1.1 1.3 2.3 2.9 35.0 153.1 152.0 143.4 130.3 114.8 107.4 98.8 92.8 88.7 81.2 79.2 67.0 34.5 10.6 4.3 2.5 1.9 0.8 0.6 1.3 0.3 40.0 177.8 176.3 169.1 157.6 134.5 118.9 102.4 93.9 82.8 74.6 71.9 57.5 24.1 8.5 5.2 2.1 0.6 0.0 0.0 0.0 0.0 42.5 177.8 176.7 176.6 167.8 147.9 128.3 108.5 96.9 84.2 73.7 68.1 50.8 19.5 9.2 5.0 1.9 0.0 0.0 0.0 0.0 0.0 45.0 190.7 191.1 183.4 171.1 158.2 141.1 122.4 102.3 88.7 72.7 65.3 49.3 14.8 7.5 5.8 1.9 0.0 0.0 0.0 0.0 0.0 47.5 204.5 204.4 200.4 180.9 160.9 150.1 124.8 108.1 88.1 75.6 66.3 46.8 13.3 6.2 4.0 1.7 0.0 0.0 0.0 0.0 0.0 50.0 217.9 217.3 213.4 199.3 168.7 151.2 126.6 92.2 86.2 80.9 68.4 46.5 10.4 4.5 4.3 1.3 0.0 0.0 0.0 0.0 0.0 52.5 237.8 239.3 234.7 222.2 189.3 154.3 120.3 91.2 77.8 71.2 72.9 50.0 12.9 4.3 2.0 0.6 0.0 0.0 0.0 0.0 0.0 55.0 281.1 281.7 266.0 243.6 213.3 159.5 118.1 90.9 67.0 68.3 68.1 52.8 15.6 4.2 1.0 0.0 0.0 0.0 0.0 0.0 0.0 57.5 310.6 309.5 301.7 271.9 230.7 168.9 121.6 93.9 64.9 61.2 57.7 47.9 16.5 5.3 0.6 0.0 0.0 0.0 0.0 0.0 0.0 60.0 286.9 288.5 291.1 292.1 235.6 163.9 131.8 99.9 65.3 52.6 49.0 39.7 14.3 5.0 0.9 0.0 0.0 0.0 0.0 0.0 0.0 62.5 257.4 257.4 265.5 267.6 227.4 165.6 145.6 112.7 69.1 46.4 43.2 30.8 9.6 3.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 65.0 234.6 234.9 250.8 251.7 192.9 164.1 141.6 114.6 74.9 47.7 42.9 25.1 8.4 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 67.5 227.1 226.1 222.2 231.1 190.7 159.5 135.4 110.5 75.3 49.0 42.5 25.2 4.3 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 70.0 200.8 195.6 193.3 197.3 174.9 156.9 128.9 101.7 64.1 51.4 41.8 21.5 2.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 72.5 154.6 154.1 168.4 157.2 153.8 156.8 121.2 82.1 51.8 44.6 33.7 13.3 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 75.0 101.2 105.5 134.5 137.2 132.2 128.7 102.0 60.0 35.1 33.3 23.3 6.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 77.5 26.3 27.0 40.8 55.0 83.5 76.0 60.0 40.2 22.3 14.6 12.4 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 80.0 7.2 6.7 9.6 11.6 16.3 21.4 30.0 26.6 18.9 7.9 5.3 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 82.5 0.0 0.3 0.6 1.3 3.0 3.8 6.4 10.1 10.6 4.6 1.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 85.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 87.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 90.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
(A similar table including even some other results can be computed at producer's website.)