Illuminance plots of rt21f

(as computed by ies2tab from that IES photometry file)

spacing 5 plot single luminaire plot
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.

illuminance scale

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.

ies2tab text output:

   
       
# IESNA91
# [TEST] LSI 8412
# [DATE] 04/05/89
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT21F
# [LUMINAIRE] SCOOP WALL WASH
# [LAMP] 13W FL
# TILT=NONE
# Bulbs: 1,    900 lm each
# Number of measured angles:  19 vertical,   9 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.420   0.200   0.000
# Ballast factor: 1,  Input power:   18 W


# Source file: rt21f.ies
# Luminaire flux =    71 lm,
#                    7.9 % of the bulb flux
# between 75 and 90:  2.0 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   5.6 cd/1000lm ,  0.6 % 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    19 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    13 cd/1000lm,
# maximum spec. lum. intensity    72 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):

#  H:   0.0  22.5  45.0  67.5  90.0 112.5 135.0 157.5 180.0
#V:  
  0.0  31.1  31.1  31.1  31.1  31.1  31.1  31.1  31.1  31.1
  5.0  38.9  37.8  34.4  31.1  28.9  30.0  26.7  25.6  24.4
 10.0  45.6  43.3  40.0  32.2  27.8  26.7  21.1  17.8  15.6
 15.0  50.0  48.9  46.7  32.2  26.7  22.2  16.7  10.0  11.1
 20.0  56.7  57.8  54.4  33.3  24.4  14.4  10.0  10.0   8.9
 25.0  65.6  65.6  58.9  33.3  20.0  13.3   7.8   7.8   6.7
 30.0  70.0  67.8  62.2  32.2  18.9   6.7   4.4   5.6   4.4
 35.0  72.2  68.9  61.1  28.9  16.7   5.6   3.3   5.6   5.6
 40.0  67.8  63.3  52.2  23.3  13.3   4.4   3.3   2.2   4.4
 45.0  62.2  56.7  44.4  16.7  11.1   3.3   1.1   3.3   1.1
 50.0  51.1  46.7  34.4  12.2  10.0   2.2   1.1   2.2   1.1
 55.0  38.9  36.7  24.4  10.0   5.6   1.1   0.0   1.1   0.0
 60.0  27.8  25.6  16.7   7.8   4.4   0.0   0.0   1.1   1.1
 65.0  17.8  18.9   7.8   3.3   1.1   2.2   2.2   0.0   0.0
 70.0  13.3  11.1   4.4   2.2   1.1   0.0   0.0   0.0   0.0
 75.0   7.8   8.9   2.2   0.0   0.0   1.1   1.1   0.0   1.1
 80.0   5.6   4.4   3.3   2.2   1.1   0.0   1.1   0.0   0.0
 85.0   5.6   3.3   3.3   1.1   0.0   1.1   2.2   0.0   0.0
 90.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0

# IESNA91
# [TEST] LSI 8412
# [DATE] 04/05/89
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] RT21F
# [LUMINAIRE] SCOOP WALL WASH
# [LAMP] 13W FL
# TILT=NONE
# Bulbs: 1,    900 lm each
# Number of measured angles:  19 vertical,   9 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.420   0.200   0.000
# Ballast factor: 1,  Input power:   18 W


# Source file: rt21f.ies
# Luminaire flux =    71 lm,
#                    7.9 % of the bulb flux
# between 75 and 90:  2.0 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   5.6 cd / 1000 lm ,  0.6 % 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    19 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    13 cd / 1000 lm,
# maximum spec. lum. intensity    72 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):

#  H:   0.0  22.5  45.0  67.5  90.0 112.5 135.0 157.5 180.0
#V:  
  0.0  31.1  31.1  31.1  31.1  31.1  31.1  31.1  31.1  31.1
  5.0  38.9  37.8  34.4  31.1  28.9  30.0  26.7  25.6  24.4
 10.0  45.6  43.3  40.0  32.2  27.8  26.7  21.1  17.8  15.6
 15.0  50.0  48.9  46.7  32.2  26.7  22.2  16.7  10.0  11.1
 20.0  56.7  57.8  54.4  33.3  24.4  14.4  10.0  10.0   8.9
 25.0  65.6  65.6  58.9  33.3  20.0  13.3   7.8   7.8   6.7
 30.0  70.0  67.8  62.2  32.2  18.9   6.7   4.4   5.6   4.4
 35.0  72.2  68.9  61.1  28.9  16.7   5.6   3.3   5.6   5.6
 40.0  67.8  63.3  52.2  23.3  13.3   4.4   3.3   2.2   4.4
 45.0  62.2  56.7  44.4  16.7  11.1   3.3   1.1   3.3   1.1
 50.0  51.1  46.7  34.4  12.2  10.0   2.2   1.1   2.2   1.1
 55.0  38.9  36.7  24.4  10.0   5.6   1.1   0.0   1.1   0.0
 60.0  27.8  25.6  16.7   7.8   4.4   0.0   0.0   1.1   1.1
 65.0  17.8  18.9   7.8   3.3   1.1   2.2   2.2   0.0   0.0
 70.0  13.3  11.1   4.4   2.2   1.1   0.0   0.0   0.0   0.0
 75.0   7.8   8.9   2.2   0.0   0.0   1.1   1.1   0.0   1.1
 80.0   5.6   4.4   3.3   2.2   1.1   0.0   1.1   0.0   0.0
 85.0   5.6   3.3   3.3   1.1   0.0   1.1   2.2   0.0   0.0
 90.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0