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| 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] LSI 12232
# [DATE] 09/11/95
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT18F-26
# [LUMINAIRE] BAFFLE W/REFLECTOR
# [LAMP] 26W FL
# TILT=NONE
# Bulbs: 1, 1800 lm each
# Number of measured angles: 37 vertical, 1 horizontal ones
# Photometric type: 1, Units type: 1
# Luminous opening diameter (and height?): 0.470 ( 0.000 )
# Ballast factor: 1, Input power: 27 W
# Source file: rt18f-26.ies
# Luminaire flux = 860 lm,
# 47.8 % of the bulb flux
# between 75 and 90: 0.1 % of the luminaire flux
# - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above: max 0.6 cd/1000lm , 0.1 % of the luminaire flux
# 90deg and above: max 0.0 cd/1000lm , 0.0 % of the luminaire flux
# CutOff Type: Full_CutOff
# 62.5 deg to <67.5 deg: max 15 cd/1000lm,
# 67.5 deg to <72.5 deg: max 2 cd/1000lm,
# maximum spec. lum. intensity 268 cd/1000lm
# 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):
0.0 252
2.5 253
5.0 257
7.5 263
10.0 266
12.5 268
15.0 268
17.5 263
20.0 254
22.5 244
25.0 234
27.5 223
30.0 212
32.5 199
35.0 186
37.5 171
40.0 154
42.5 137
45.0 121
47.5 105
50.0 88.9
52.5 73.9
55.0 57.8
57.5 42.2
60.0 27.8
62.5 15.0
65.0 6.1
67.5 2.2
70.0 1.1
72.5 1.1
75.0 0.6
77.5 0.6
80.0 0.6
82.5 0.6
85.0 0.6
87.5 0.6
90.0 0.0
# IESNA91
# [TEST] LSI 12232
# [DATE] 09/11/95
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT18F-26
# [LUMINAIRE] BAFFLE W/REFLECTOR
# [LAMP] 26W FL
# TILT=NONE
# Bulbs: 1, 1800 lm each
# Number of measured angles: 37 vertical, 1 horizontal ones
# Photometric type: 1, Units type: 1
# Luminous opening diameter (and height?): 0.470 ( 0.000 )
# Ballast factor: 1, Input power: 27 W
# Source file: rt18f-26.ies
# Luminaire flux = 860 lm,
# 47.8 % of the bulb flux
# between 75 and 90: 0.1 % of the luminaire flux
# - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above: max 0.6 cd / 1000 lm , 0.1 % of the luminaire flux
# 90deg and above: max 0.0 cd / 1000 lm , 0.0 % of the luminaire flux
# CutOff Type: Full_CutOff
# 62.5 deg to <67.5 deg: max 15 cd / 1000 lm,
# 67.5 deg to < 76 deg: max 2 cd / 1000 lm,
# maximum spec. lum. intensity 268 cd / 1000 lm
# 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):
0.0 252
2.5 253
5.0 257
7.5 263
10.0 266
12.5 268
15.0 268
17.5 263
20.0 254
22.5 244
25.0 234
27.5 223
30.0 212
32.5 199
35.0 186
37.5 171
40.0 154
42.5 137
45.0 121
47.5 105
50.0 88.9
52.5 73.9
55.0 57.8
57.5 42.2
60.0 27.8
62.5 15.0
65.0 6.1
67.5 2.2
70.0 1.1
72.5 1.1
75.0 0.6
77.5 0.6
80.0 0.6
82.5 0.6
85.0 0.6
87.5 0.6
90.0 0.0