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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 8422
# [DATE] 04/06/89
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT18A19
# [LUMINAIRE] BAFFLE W/REFLETOR
# [LAMP] 100W A19
# TILT=NONE
# Bulbs: 1, 1750 lm each
# Number of measured angles: 19 vertical, 1 horizontal ones
# Photometric type: 1, Units type: 1
# Luminous openig width, length and height: 0.420 0.420 0.000
# Ballast factor: 1, Input power: 100 W
# Source file: rt18a19.ies
# Luminaire flux = 954 lm,
# 54.5 % of the bulb flux
# between 75 and 90: 0.2 % of the luminaire flux
# - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above: max 1.1 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 2 cd/1000lm,
# 67.5 deg to <72.5 deg: max 2 cd/1000lm,
# maximum spec. lum. intensity 511 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):
0.0 511
5.0 498
10.0 473
15.0 431
20.0 378
25.0 322
30.0 266
35.0 207
40.0 149
45.0 97.7
50.0 53.7
55.0 21.1
60.0 5.7
65.0 2.3
70.0 1.7
75.0 1.7
80.0 1.1
85.0 0.6
90.0 0.0
# IESNA91
# [TEST] LSI 8422
# [DATE] 04/06/89
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT18A19
# [LUMINAIRE] BAFFLE W/REFLETOR
# [LAMP] 100W A19
# TILT=NONE
# Bulbs: 1, 1750 lm each
# Number of measured angles: 19 vertical, 1 horizontal ones
# Photometric type: 1, Units type: 1
# Luminous openig width, length and height: 0.420 0.420 0.000
# Ballast factor: 1, Input power: 100 W
# Source file: rt18a19.ies
# Luminaire flux = 954 lm,
# 54.5 % of the bulb flux
# between 75 and 90: 0.2 % of the luminaire flux
# - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above: max 1.1 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 2 cd / 1000 lm,
# 67.5 deg to < 76 deg: max 2 cd / 1000 lm,
# maximum spec. lum. intensity 511 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):
0.0 511
5.0 498
10.0 473
15.0 431
20.0 378
25.0 322
30.0 266
35.0 207
40.0 149
45.0 97.7
50.0 53.7
55.0 21.1
60.0 5.7
65.0 2.3
70.0 1.7
75.0 1.7
80.0 1.1
85.0 0.6
90.0 0.0