Illuminance plots of ns226

(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 9520
# [DATE] 05/17/90
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] NS226
# [LUMINAIRE] MICRO FLOOD / 7V x 7H
# [LAMP] (2) 13 WATT FL
# TILT=NONE
# Bulbs: 2,    900 lm each
# Number of measured angles:  20 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.750   0.460   0.000
# Ballast factor: 1,  Input power:   36 W


# Source file: ns226.ies
# Luminaire flux =   457 lm,
#                   25.4 % of the bulb flux
# between 75 and 90:  0.8 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   2.2 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    28 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    17 cd/1000lm,
# maximum spec. lum. intensity   112 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   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   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108
  2.5   112   112   112   112   112   112   112   112   112   112   112   111   111   111   111   111   111   111   111   111   110
  5.0   112   111   111   111   111   111   111   111   111   111   111   111   111   111   111   110   110   109   109   109   108
 10.0   108   107   107   107   107   108   109   109   109   109   109   109   109   108   107   106   105   104   104   104   101
 15.0   103   102   102   102   102   103   104   105   106   106   105   105   104   103   101   100  99.4  99.4  98.9  98.9  96.7
 20.0   101  99.4  98.9  98.9  97.8  97.8  97.8  98.3  99.4  99.4  99.4  98.9  98.3  96.1  95.0  94.4  95.0  96.1  96.7  97.2  95.0
 25.0   102   100  99.4  98.3  95.6  93.3  91.7  91.7  37.2  92.8  92.8  92.2  90.6  89.4  88.9  90.6  92.8  95.0  97.2  98.3  95.6
 30.0   102   100  99.4  98.3  94.4  90.0  86.1  84.4  84.4  84.4  84.4  83.9  82.2  81.7  83.3  86.7  91.7  94.4  96.1  97.2  93.3
 35.0  97.8  95.0  95.0  93.9  91.7  86.7  80.6  76.7  75.6  75.6  75.0  75.0  73.3  74.4  77.8  83.3  87.8  90.6  91.1  91.1  86.7
 40.0  88.3  85.0  85.6  85.6  84.4  81.1  75.0  68.9  66.1  65.6  65.6  65.0  64.4  66.7  72.8  77.8  80.6  81.7  81.1  80.6  75.6
 45.0  78.3  75.0  75.0  75.0  74.4  72.2  68.3  61.7  56.7  55.6  55.0  55.0  55.0  59.4  65.0  68.9  70.0  70.0  70.0  70.0  65.6
 50.0  67.8  63.9  65.0  65.6  63.9  61.7  58.9  53.3  47.2  45.0  44.4  44.4  46.1  51.1  56.7  58.3  59.4  60.0  58.3  57.2  52.2
 55.0  51.7  47.8  49.4  51.1  52.8  51.7  48.3  43.9  37.8  34.4  33.9  33.9  36.7  42.2  46.1  48.3  47.2  45.0  43.3  42.2  37.2
 60.0  35.0  31.1  32.8  35.0  37.8  40.0  38.3  33.9  28.3  24.4  23.9  23.9  27.8  32.8  36.1  35.6  32.8  30.0  27.8  27.2  25.0
 65.0  25.0  22.8  22.8  22.8  23.3  25.6  27.8  24.4  19.4  15.6  15.6  15.6  18.9  23.3  25.0  22.2  20.0  20.6  21.1  21.1  18.3
 70.0  16.7  13.9  14.4  15.0  15.6  15.0  15.6  15.6  11.7   8.9   8.9   9.4  12.2  14.4  13.3  13.3  13.9  12.8  11.7  11.1   8.9
 75.0   6.1   5.0   5.0   6.1   6.7   7.8   7.8   7.8   6.1   4.4   4.4   4.4   6.1   6.7   6.7   6.1   5.0   3.9   3.3   2.8   1.7
 80.0   0.6   0.6   0.6   0.6   1.1   1.7   2.2   2.2   1.7   1.7   1.7   1.7   1.7   2.2   1.7   1.1   0.6   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   0.0   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

# IESNA91
# [TEST] LSI 9520
# [DATE] 05/17/90
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] NS226
# [LUMINAIRE] MICRO FLOOD / 7V x 7H
# [LAMP] (2) 13 WATT FL
# TILT=NONE
# Bulbs: 2,    900 lm each
# Number of measured angles:  20 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.750   0.460   0.000
# Ballast factor: 1,  Input power:   36 W


# Source file: ns226.ies
# Luminaire flux =   457 lm,
#                   25.4 % of the bulb flux
# between 75 and 90:  0.8 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   2.2 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    28 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    17 cd / 1000 lm,
# maximum spec. lum. intensity   112 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   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   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108
  2.5   112   112   112   112   112   112   112   112   112   112   112   111   111   111   111   111   111   111   111   111   110
  5.0   112   111   111   111   111   111   111   111   111   111   111   111   111   111   111   110   110   109   109   109   108
 10.0   108   107   107   107   107   108   109   109   109   109   109   109   109   108   107   106   105   104   104   104   101
 15.0   103   102   102   102   102   103   104   105   106   106   105   105   104   103   101   100  99.4  99.4  98.9  98.9  96.7
 20.0   101  99.4  98.9  98.9  97.8  97.8  97.8  98.3  99.4  99.4  99.4  98.9  98.3  96.1  95.0  94.4  95.0  96.1  96.7  97.2  95.0
 25.0   102   100  99.4  98.3  95.6  93.3  91.7  91.7  37.2  92.8  92.8  92.2  90.6  89.4  88.9  90.6  92.8  95.0  97.2  98.3  95.6
 30.0   102   100  99.4  98.3  94.4  90.0  86.1  84.4  84.4  84.4  84.4  83.9  82.2  81.7  83.3  86.7  91.7  94.4  96.1  97.2  93.3
 35.0  97.8  95.0  95.0  93.9  91.7  86.7  80.6  76.7  75.6  75.6  75.0  75.0  73.3  74.4  77.8  83.3  87.8  90.6  91.1  91.1  86.7
 40.0  88.3  85.0  85.6  85.6  84.4  81.1  75.0  68.9  66.1  65.6  65.6  65.0  64.4  66.7  72.8  77.8  80.6  81.7  81.1  80.6  75.6
 45.0  78.3  75.0  75.0  75.0  74.4  72.2  68.3  61.7  56.7  55.6  55.0  55.0  55.0  59.4  65.0  68.9  70.0  70.0  70.0  70.0  65.6
 50.0  67.8  63.9  65.0  65.6  63.9  61.7  58.9  53.3  47.2  45.0  44.4  44.4  46.1  51.1  56.7  58.3  59.4  60.0  58.3  57.2  52.2
 55.0  51.7  47.8  49.4  51.1  52.8  51.7  48.3  43.9  37.8  34.4  33.9  33.9  36.7  42.2  46.1  48.3  47.2  45.0  43.3  42.2  37.2
 60.0  35.0  31.1  32.8  35.0  37.8  40.0  38.3  33.9  28.3  24.4  23.9  23.9  27.8  32.8  36.1  35.6  32.8  30.0  27.8  27.2  25.0
 65.0  25.0  22.8  22.8  22.8  23.3  25.6  27.8  24.4  19.4  15.6  15.6  15.6  18.9  23.3  25.0  22.2  20.0  20.6  21.1  21.1  18.3
 70.0  16.7  13.9  14.4  15.0  15.6  15.0  15.6  15.6  11.7   8.9   8.9   9.4  12.2  14.4  13.3  13.3  13.9  12.8  11.7  11.1   8.9
 75.0   6.1   5.0   5.0   6.1   6.7   7.8   7.8   7.8   6.1   4.4   4.4   4.4   6.1   6.7   6.7   6.1   5.0   3.9   3.3   2.8   1.7
 80.0   0.6   0.6   0.6   0.6   1.1   1.7   2.2   2.2   1.7   1.7   1.7   1.7   1.7   2.2   1.7   1.1   0.6   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   0.0   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