Illuminance plots

produced from photometry file rcl1sac.ies

spacing 5 plot spacing 6 plot single luminaire plot
In left plots, specific illuminances by a continuous row of luminaires spaced 5 and 6 heights are shown in their left halves (right half concerns 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:

   
       
# IESNA:LM-63-1995
# [TEST] 763902
# [DATE] 5/16/86
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] RCL15SXXAC
# [LUMINAIRE] 150W HPS AREA CUTOFF  
# [LAMP] 150W HPS CL E-23.5
# [_REFLECTOR] HYDROFORMED ALUMINUM
# [_REFRACTOR] FLAT GLASS
# [_SOCKET POSITION] HORIZONTAL
# [_LAMP LUMENS] 16000
# TILT=NONE
# Bulbs: 1,  16000 lm each
# Number of measured angles:  37 vertical,  24 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.250   2.000   0.670
# Ballast factor: 1,  Input power:  150 W


# Source file: rcl1sac.ies
# Luminaire flux = 11638 lm,
#                   72.7 % of the bulb flux
# between 75 and 90:  3.8 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  68.4 cd / 1000 lm ,  0.7 % 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   389 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   380 cd / 1000 lm,
# maximum spec. lum. intensity   389 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  60.0  65.0  70.0  75.0  80.0  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   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196   196
  2.5   204   203   202   202   201   201   200   200   200   199   199   198   198   197   196   195   194   192   191   189   188   188   187   188
  5.0   215   213   212   212   211   210   208   207   207   206   205   203   202   200   198   195   191   187   183   179   176   174   173   173
  7.5   224   222   222   221   220   220   219   219   219   217   216   214   212   209   206   200   192   185   176   169   162   158   155   155
 10.0   232   230   230   230   231   232   232   232   231   229   227   224   220   216   213   204   195   185   173   162   152   144   140   139
 12.5   239   237   237   239   242   244   243   241   240   237   234   230   226   221   217   207   195   184   171   155   138   124   117   116
 15.0   247   245   246   249   253   254   252   250   248   244   240   235   230   224   218   207   195   182   164   142   123   107  99.5  98.3
 17.5   256   255   255   259   263   263   260   258   254   248   243   237   230   224   218   205   192   176   155   132   112  96.6  89.0  88.1
 20.0   266   264   263   268   271   271   266   262   257   250   244   237   231   224   217   204   189   169   145   122   105  90.9  82.6  81.4
 22.5   274   272   271   276   277   275   268   263   257   251   244   237   230   223   216   203   186   161   135   114  99.9  87.2  78.1  77.1
 25.0   278   276   276   280   280   275   267   261   256   250   243   235   228   221   213   199   180   153   127   108  96.3  84.4  74.6  73.4
 27.5   279   277   278   281   280   273   263   258   252   245   238   231   223   215   208   193   172   145   121   104  92.7  82.3  71.6  70.3
 30.0   278   276   278   278   276   268   258   252   245   238   231   223   216   207   200   184   164   139   117   102  89.6  80.1  69.1  67.3
 32.5   274   272   274   273   271   263   252   244   237   230   222   214   206   198   190   174   154   133   114  99.5  87.2  77.8  67.1  65.4
 35.0   271   269   270   267   265   259   245   237   230   221   213   205   196   187   178   162   145   127   112  97.2  85.1  76.0  64.9  62.6
 37.5   268   266   265   261   261   256   240   231   222   213   204   194   184   174   165   149   137   124   110  95.2  82.8  73.4  62.0  59.9
 40.0   263   261   259   255   260   256   236   225   215   204   193   183   172   161   152   139   132   121   108  92.9  80.6  70.4  59.6  57.1
 42.5   254   253   253   251   261   256   233   220   208   196   184   172   160   149   141   134   129   119   106  90.9  78.6  67.7  56.5  53.4
 45.0   239   239   246   248   265   258   234   219   205   190   175   161   148   141   136   130   125   116   103  89.5  76.8  64.8  51.6  47.9
 47.5   217   220   237   246   266   261   237   222   205   186   167   152   144   138   134   128   122   114   102  88.1  74.8  60.8  45.8  42.7
 50.0   195   200   224   241   263   264   247   230   208   185   165   150   141   136   131   125   119   112   100  86.3  72.9  55.9  41.9  40.5
 52.5   176   181   208   225   255   268   263   245   218   191   167   150   139   133   129   123   116   109  98.7  84.6  71.1  51.1  40.4  39.3
 55.0   160   167   192   205   243   276   288   270   237   199   167   148   136   130   126   119   113   106  96.4  82.4  66.0  43.8  38.7  37.8
 57.5   150   157   179   191   234   287   322   299   251   201   165   144   133   127   123   115   109   102  92.9  68.4  42.4  37.1  35.6  35.0
 60.0   143   150   171   182   225   304   357   320   257   198   161   140   129   123   119   106  88.3  75.7  59.7  39.3  35.9  34.6  33.2  32.6
 62.5   138   146   166   173   218   324   381   328   254   193   155   134   123   111  95.3  63.1  44.1  37.3  35.1  34.1  32.1  31.3  30.1  30.1
 65.0   134   142   162   165   212   339   389   325   245   183   146   118  91.8  67.6  48.2  28.3  24.4  26.3  29.6  29.2  27.6  27.2  26.4  26.4
 67.5   128   138   157   157   204   341   380   310   229   161   108  70.6  44.4  30.1  23.6  19.8  19.3  21.2  23.8  23.5  22.6  22.1  21.9  21.8
 70.0   123   132   150   148   191   323   354   275   182   107  60.5  35.9  25.2  20.8  18.1  15.7  15.4  16.4  18.1  18.1  17.4  17.2  17.1  16.9
 72.5   115   124   140   136   168   285   290   204   119  65.9  39.6  26.4  19.6  15.9  14.3  12.0  11.5  12.3  13.1  12.9  12.6  12.3  12.4  12.6
 75.0   100   109   128   119   139   213   195   134  82.6  48.7  29.9  20.1  14.8  11.8  10.3   8.3   7.8   8.1   8.4   8.4   8.1   8.0   8.0   8.0
 77.5  84.4  92.6   107  89.0  91.2   122   121  89.2  56.6  34.1  21.0  13.9  10.0   7.7   6.4   4.8   4.3   4.1   4.4   4.1   4.0   3.8   3.5   3.7
 80.0  51.6  55.8  57.9  40.1  35.3  60.6  68.4  50.8  33.2  20.6  12.8   8.1   5.4   3.5   2.8   1.6   0.9   0.9   0.8   0.6   0.3   0.3   0.3   0.3
 82.5  15.7  15.7  13.5  10.3  15.4  28.7  30.9  23.0  15.4   9.5   5.4   2.9   1.4   0.8   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 85.0   2.4   2.3   2.1   2.4   5.4   9.8   9.5   6.9   4.1   2.0   0.8   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 87.5   0.0   0.0   0.0   0.0   0.1   0.9   0.9   0.4   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   0.0   0.0   0.0