Illuminance plots

produced from photometry file hmc4m3a.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] 766200  
# [DATE] 12/11/91 
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] HMC40MXX3A  
# [LUMINAIRE] 400W METAL HALID TYPE III HIGH MAST 
# [LAMP] 400W MH CL BT-37  
# [_REFLECTOR] ANODIZED SPUN ALUMINUM 
# [_REFRACTOR] SAG GLASS
# [_SOCET POSITION] HORIZONTAL 
# [_LAMP LUMENS] 32000
# TILT=NONE
# Bulbs: 1,  32000 lm each
# Number of measured angles:  31 vertical,  22 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.000   0.000   0.000
# Ballast factor: 1,  Input power:  400 W


# Source file: hmc4m3a.ies
# Luminaire flux = 26504 lm,
#                   82.8 % of the bulb flux
# between 75 and 90:  2.9 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  93.0 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   410 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   368 cd / 1000 lm,
# maximum spec. lum. intensity   410 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  70.0  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   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209   209
  5.0   218   220   220   217   216   216   213   213   211   208   206   206   204   201   198   196   195   193   191   192   193   192
 15.0   235   233   240   244   248   252   253   255   247   241   229   221   213   197   180   209   155   147   146   148   147   148
 25.0   202   196   202   215   231   240   245   244   243   237   220   210   200   183   169   156   143   133   128   137   146   147
 35.0   147   145   150   177   217   234   258   273   276   282   265   251   240   223   204   185   160   137   119   114   118   117
 45.0   175   164   159   176   197   231   282   316   301   276   217   197   183   210   149   131   117   106 100.0   106   118   124
 50.0   140   141   144   164   168   207   269   298   293   273   224   200   182   164   153   136   119   109   102   111   127   133
 55.0   114   117   145   154   193   237   298   365   373   358   289   249   214   185   166   141   125   119   116   115   127   127
 60.0  82.1  82.9   108   132   189   231   299   373   398   378   294   245   202   171   154   131   122   118   108  91.7   103   104
 62.5  76.0  76.0  89.1   124   183   225   293   372   404   378   277   228   190   165   151   136   132   117  94.3   120  82.1  89.9
 65.0  61.1  68.1  77.3   113   165   212   282   361   410   396   301   244   202   162   144   139   129   108  81.2  62.0  62.4  63.7
 67.5  47.2  50.2  58.9   103   156   214   284   350   368   364   272   227   193   139   117   110  98.2  80.3  60.3  44.1  41.9  45.4
 70.0  36.7  39.3  52.8  92.1   146   210   275   300   316   313   243   200   162  94.3  76.8  62.4  59.4  46.3  32.3  25.8  21.0  22.7
 72.5  27.1  29.3  37.5  68.1   114   160   229   286   282   250   180   147   108  62.4  41.9  32.3  24.4  18.8  17.0  13.5  13.1  14.0
 75.0  14.8  14.8  17.5  32.3  64.2   107   134   201   200   193   128  95.6  72.0  38.4  24.0  16.2  11.3   8.7   7.4   7.8   7.8   7.8
 77.5   5.3   7.8   6.1   7.4  16.6  35.3  80.8   139   160   141  89.9  63.7  48.0  22.3  12.7   7.8   6.6   5.3   4.8   4.4   4.8   4.4
 80.0   2.6   2.2   2.2   3.1   7.0  18.3  35.8  93.0  92.1  81.2  45.8  37.5  24.9  13.1   6.6   4.4   3.1   2.2   2.2   2.6   2.6   3.5
 82.5   0.9   0.9   0.9   1.3   3.1   6.1   8.7  10.5  16.6  18.3  11.3   4.8   6.6   3.1   2.2   0.9   0.9   1.3   0.9   0.9   0.9   0.9
 85.0   0.0   0.4   0.4   0.4   0.9   1.3   2.2   1.8   1.8   1.8   1.8   0.9   0.9   0.4   0.0   0.0   0.0   0.4   0.0   0.4   0.4   0.0
 87.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   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
 95.0   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
105.0   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
115.0   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
125.0   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
135.0   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
145.0   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
155.0   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
165.0   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
175.0   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
180.0   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