Illuminance plots of cf425

(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 4949
# [DATE] 10/09/85
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] CF425
# [LUMINAIRE] 16" CUTOFF FLOODLIGHT
# [LAMP] 250 WATT MH
# TILT=NONE
# Bulbs: 1,  20500 lm each
# Number of measured angles:  20 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.160   0.830   0.000
# Ballast factor: 1,  Input power:  292 W


# Source file: cf425.ies
# Luminaire flux = 12645 lm,
#                   61.7 % of the bulb flux
# between 75 and 90:  0.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   7.2 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   138 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    88 cd/1000lm,
# maximum spec. lum. intensity   611 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   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113
  5.0   119   117   117   119   117   116   113   113   113   113   112   113   113   113   113   117   117   117   117   117   116
 10.0   130   127   126   126   125   121   117   116   115   115   115   116   117   122   123   127   130   130   129   130   127
 15.0   144   142   140   137   135   126   123   122   121   119   122   122   125   129   133   136   140   142   137   136   133
 20.0   164   160   155   150   145   140   133   127   127   125   121   123   126   133   137   137   139   138   136   132   130
 25.0   208   196   189   177   165   153   145   136   129   123   119   116   121   132   138   140   136   132   130   129   127
 30.0   295   271   256   224   193   169   153   143   134   127   123   118   119   132   136   139   133   132   137   147   144
 35.0   337   327   313   295   249   183   151   141   136   130   123   117   116   126   130   132   137   155   174   185   186
 40.0   393   369   344   307   270   203   143   136   136   130   125   115   111   119   123   136   179   176   155   151   156
 45.0   578   559   524   411   277   192   140   126   135   126   122   112   105   111   108   129   138   133   140   147   147
 47.5   611   579   551   526   338   196   137   123   133   123   118   109   102   108  98.0   108   122   132   135   136   139
 50.0   583   572   527   526   436   220   130   122   133   119   109   101  99.2   101  91.2  98.0   113   125   125   125   127
 55.0   301   334   365   426   426   343   148   116   129   105  91.2  87.0  88.1  88.1  79.7  82.4  96.9   111   102  93.8   111
 60.0   189   192   195   218   266   291   153  93.8   101  72.8  60.2  61.4  75.9  72.8  67.1  70.2  57.2  40.8  40.8  33.6  32.0
 65.0   116   122   120   132   138   116  96.5  78.2  63.3  44.6  38.1  39.3  53.0  51.9  60.2  12.6   5.7  26.7  25.2  18.3  21.4
 70.0  26.7  36.2  54.5  81.2  77.0  88.1  67.1  61.8  51.9  22.5  19.8  16.8  11.0   7.2   8.4   3.0   2.2   6.8   9.9   6.8   6.8
 75.0   6.8   9.9   6.8   6.8   6.8  40.8  23.6  19.8   5.7   0.0   2.2   0.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 80.0   0.0   1.5   2.2   4.5   2.2   2.2   3.4   7.2   0.7   0.0   0.0   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   0.0   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 4949
# [DATE] 10/09/85
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] CF425
# [LUMINAIRE] 16" CUTOFF FLOODLIGHT
# [LAMP] 250 WATT MH
# TILT=NONE
# Bulbs: 1,  20500 lm each
# Number of measured angles:  20 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.160   0.830   0.000
# Ballast factor: 1,  Input power:  292 W


# Source file: cf425.ies
# Luminaire flux = 12645 lm,
#                   61.7 % of the bulb flux
# between 75 and 90:  0.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   7.2 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   138 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    88 cd / 1000 lm,
# maximum spec. lum. intensity   611 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   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113   113
  5.0   119   117   117   119   117   116   113   113   113   113   112   113   113   113   113   117   117   117   117   117   116
 10.0   130   127   126   126   125   121   117   116   115   115   115   116   117   122   123   127   130   130   129   130   127
 15.0   144   142   140   137   135   126   123   122   121   119   122   122   125   129   133   136   140   142   137   136   133
 20.0   164   160   155   150   145   140   133   127   127   125   121   123   126   133   137   137   139   138   136   132   130
 25.0   208   196   189   177   165   153   145   136   129   123   119   116   121   132   138   140   136   132   130   129   127
 30.0   295   271   256   224   193   169   153   143   134   127   123   118   119   132   136   139   133   132   137   147   144
 35.0   337   327   313   295   249   183   151   141   136   130   123   117   116   126   130   132   137   155   174   185   186
 40.0   393   369   344   307   270   203   143   136   136   130   125   115   111   119   123   136   179   176   155   151   156
 45.0   578   559   524   411   277   192   140   126   135   126   122   112   105   111   108   129   138   133   140   147   147
 47.5   611   579   551   526   338   196   137   123   133   123   118   109   102   108  98.0   108   122   132   135   136   139
 50.0   583   572   527   526   436   220   130   122   133   119   109   101  99.2   101  91.2  98.0   113   125   125   125   127
 55.0   301   334   365   426   426   343   148   116   129   105  91.2  87.0  88.1  88.1  79.7  82.4  96.9   111   102  93.8   111
 60.0   189   192   195   218   266   291   153  93.8   101  72.8  60.2  61.4  75.9  72.8  67.1  70.2  57.2  40.8  40.8  33.6  32.0
 65.0   116   122   120   132   138   116  96.5  78.2  63.3  44.6  38.1  39.3  53.0  51.9  60.2  12.6   5.7  26.7  25.2  18.3  21.4
 70.0  26.7  36.2  54.5  81.2  77.0  88.1  67.1  61.8  51.9  22.5  19.8  16.8  11.0   7.2   8.4   3.0   2.2   6.8   9.9   6.8   6.8
 75.0   6.8   9.9   6.8   6.8   6.8  40.8  23.6  19.8   5.7   0.0   2.2   0.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 80.0   0.0   1.5   2.2   4.5   2.2   2.2   3.4   7.2   0.7   0.0   0.0   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   0.0   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