Illuminance plots

produced from photometry file rcl4mac.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] 763722
# [DATE] 11/15/85
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] RCL40MXXAC
# [LUMINAIRE] 400W MH AREA CUTOFF 
# [LAMP] 400W MH CL E-37 
# [_REFLECTOR] HYDROFORMED ALUMINUM
# [_REFRACTOR] FLAT GLASS
# [_SOCKET POSITION] HORIZONTAL
# [_LAMP LUMENS] 27880
# TILT=NONE
# Bulbs: 1,  27880 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:  400 W


# Source file: rcl4mac.ies
# Luminaire flux = 20704 lm,
#                   74.3 % of the bulb flux
# between 75 and 90:  2.7 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  38.8 cd / 1000 lm ,  0.5 % 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   314 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   290 cd / 1000 lm,
# maximum spec. lum. intensity   314 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   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206   206
  2.5   203   205   205   206   206   206   206   207   207   207   207   207   207   207   207   206   206   205   205   205   205   205   204   204
  5.0   207   210   210   210   210   210   210   210   210   210   210   210   209   209   209   208   205   203   202   200   198   197   196   196
  7.5   210   212   213   213   214   215   215   215   215   215   215   214   214   213   213   210   206   202   197   194   190   187   185   185
 10.0   213   215   215   217   218   220   221   222   222   222   221   221   220   219   217   212   206   200   194   188   182   178   174   174
 12.5   215   217   218   220   223   226   229   229   229   229   228   227   225   224   221   215   207   199   191   182   174   167   162   162
 15.0   219   221   222   225   229   233   236   236   236   235   234   233   230   228   225   218   209   199   189   176   162   150   143   142
 17.5   222   224   226   230   236   240   243   243   243   242   241   239   236   233   230   222   212   201   185   164   146   134   127   127
 20.0   226   228   230   234   241   246   249   249   249   248   246   243   239   236   232   223   213   200   178   153   134   122   115   115
 22.5   230   233   235   239   246   251   253   253   251   249   246   243   238   234   230   220   210   194   169   142   124   112   107   106
 25.0   236   238   240   244   249   254   254   253   251   247   243   239   234   229   224   213   202   185   158   132   117   108   102   101
 27.5   243   246   246   248   251   255   254   251   248   243   237   232   226   221   215   204   191   173   147   126   113   102  95.2  94.7
 30.0   251   254   253   251   252   255   253   249   243   237   230   223   217   212   205   193   178   162   139   121   108  97.2  90.3  89.3
 32.5   259   262   259   253   254   256   251   245   237   229   222   215   207   201   193   179   166   153   133   118   104  93.4  87.0  86.2
 35.0   266   268   263   255   255   258   250   241   231   223   214   205   196   188   179   166   156   145   130   115   102  90.7  85.1  83.9
 37.5   269   271   265   255   259   262   249   238   226   215   204   193   183   174   166   155   147   140   127   113  99.2  88.5  82.3  81.1
 40.0   267   270   263   255   263   267   250   236   221   207   194   181   171   162   155   145   140   136   125   110  96.0  84.5  76.0  74.8
 42.5   257   259   256   255   267   271   251   235   217   200   185   172   161   153   146   138   135   132   123   107  92.6  78.9  69.6  68.8
 45.0   239   242   245   252   268   273   253   234   215   196   179   166   155   146   141   135   131   128   119   104  88.6  74.2  65.7  65.4
 47.5   221   224   229   244   263   274   255   236   216   196   178   164   153   146   140   131   126   123   116   101  85.2  70.5  63.7  62.9
 50.0   205   208   212   227   253   273   259   243   224   202   183   167   154   145   138   127   120   117   112  97.9  82.6  69.0  63.5  63.1
 52.5   192   195   197   211   245   273   268   255   234   213   190   169   154   145   135   124   114   112   107  94.8  80.2  68.1  63.1  63.6
 55.0   184   186   186   201   239   274   282   268   249   225   194   169   154   141   133   117   108   105   102  90.9  77.7  67.5  61.3  62.1
 57.5   181   182   181   194   232   279   296   284   263   232   199   170   153   141   131   107   101  99.4  97.0  86.8  73.5  64.1  58.9  57.9
 60.0   179   180   177   186   225   284   308   297   270   237   199   169   149   130   114  96.9  90.2  89.4  88.2  78.3  65.1  58.0  55.2  54.3
 62.5   177   177   173   178   217   283   314   302   274   232   192   156   127   106  91.3  75.5  69.7  71.6  71.7  61.1  53.9  51.2  51.0  50.3
 65.0   173   173   167   169   208   276   308   297   260   214   165   124  93.7  74.8  63.1  49.5  46.4  49.8  51.2  48.6  45.9  45.8  46.1  45.7
 67.5   166   166   160   156   191   258   290   274   233   180   128  88.3  63.1  47.0  38.0  30.6  31.5  35.8  39.6  40.1  39.5  40.4  41.6  41.1
 70.0   155   153   146   140   164   228   252   229   187   136  91.2  59.1  41.0  31.5  26.9  23.1  24.4  28.1  31.7  32.7  32.8  34.0  35.6  35.4
 72.5   132   131   125   119   136   179   189   169   136  96.3  64.3  42.7  30.1  23.8  20.9  18.2  18.8  21.8  24.3  25.5  25.9  26.8  28.5  28.8
 75.0   100  99.5  95.0  86.8  92.6   118   126   115  92.9  66.6  44.9  30.2  22.0  17.9  15.7  13.6  13.9  15.7  17.6  18.5  18.9  19.8  20.6  20.9
 77.5  48.0  46.7  44.7  39.1  43.4  66.1  77.1  70.8  56.7  41.1  27.7  19.3  14.6  12.3  10.8   9.3   9.3  10.4  11.6  12.3  12.7  13.2  13.6  13.9
 80.0  12.8  12.6  12.1  13.4  19.8  34.1  38.8  35.2  27.5  20.3  14.2  10.8   8.5   7.3   6.5   5.5   5.5   6.0   6.6   7.2   7.5   7.7   8.1   8.2
 82.5   4.4   4.2   4.4   5.5   8.3  13.2  14.3  12.4  10.0   7.7   6.0   4.7   3.8   3.2   2.8   2.4   2.3   2.4   2.8   3.0   3.1   3.3   3.3   3.4
 85.0   1.3   1.2   1.2   1.6   2.3   3.2   3.6   3.3   2.7   2.1   1.4   1.1   0.7   0.5   0.4   0.4   0.3   0.4   0.4   0.4   0.4   0.3   0.2   0.3
 87.5   0.0   0.0   0.0   0.1   0.3   0.4   0.5   0.5   0.3   0.2   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