Illuminance plots

produced from photometry file hmc4m2a.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] 766201
# [DATE] 12/21/91
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] HMC40MXX2A
# [LUMINAIRE] 400 WATT MH TYPE II HIGH MAST
# [LAMP] 400W 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: hmc4m2a.ies
# Luminaire flux = 26480 lm,
#                   82.8 % of the bulb flux
# between 75 and 90:  2.8 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  99.5 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   409 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   358 cd / 1000 lm,
# maximum spec. lum. intensity   409 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  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   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234   234
  5.0   247   245   246   245   244   244   242   241   239   238   237   236   234   232   231   229   228   227   227   225   225   225
 15.0   221   222   228   236   246   256   267   272   274   270   267   261   253   240   223   208   195   185   184   184   185   185
 25.0   168   166   171   183   207   225   242   255   260   258   251   244   234   212   195   180   166   152   146   152   158   159
 35.0   139   138   136   160   200   224   255   284   308   310   309   300   284   258   224   203   183   154   126   113   107   106
 45.0   111   112   119   147   165   187   238   296   305   286   264   239   212   178   150   131   110  98.2  92.5  95.6   103   105
 50.0  87.3  89.1  96.9   136   139   170   212   273   298   289   272   249   227   179   148   126   110  97.3  94.3 100.0   119   130
 55.0  74.2  71.6  83.4   112   136   188   228   311   368   378   372   337   295   212   167   139   121   113   114   114   134   141
 60.0  60.3  58.9  70.7  89.1   129   169   231   321   389   399   381   343   300   214   163   141   128   131   120  98.2   107   107
 62.5  57.6  55.9  64.2  83.8   127   156   214   316   405   409   378   323   268   193   159   144   137   130   111  83.4  89.1  93.4
 65.0  48.9  47.6  55.0  75.1   121   149   205   310   390   400   389   340   279   232   162   155   145   128  95.2  69.8  70.3  70.7
 67.5  39.3  39.7  48.5  70.3   115   155   206   284   358   357   355   310   259   173   151   141   127   103  77.7  56.3  51.1  54.1
 70.0  30.6  34.1  42.8  64.2   103   154   194   253   334   286   282   271   234   140   112  94.7  86.0  71.6  56.3  38.4  32.3  31.4
 72.5  21.0  20.5  28.8  48.0  72.5   128   160   231   266   275   217   217   171   106  61.6  41.0  34.5  28.8  23.6  17.5  14.4  19.2
 75.0  13.1  13.5  11.8  16.6  30.1  66.3  93.4   158   199   193   169   138   107  58.9  28.8  20.5  14.0  11.3  10.5   7.8   8.3   7.8
 77.5   4.4   3.5   3.5   4.8  10.0  20.5  44.1  96.5   155   139   117   101  76.8  34.1  17.0   9.6   7.8   6.1   4.8   4.4   4.4   4.4
 80.0   1.8   2.2   1.8   2.6   4.8  10.9  20.5  53.3  84.7  99.5  58.5  61.6  43.7  23.1   7.4   4.4   3.1   2.6   1.8   2.6   2.6   2.6
 82.5   0.9   0.9   0.9   1.3   2.6   4.4   7.0  10.9  11.8  12.7  12.7   6.6   5.7   3.1   2.6   1.3   1.3   0.9   0.9   0.9   0.9   0.9
 85.0   0.0   0.4   0.4   0.4   0.9   0.9   1.3   1.8   1.8   2.2   1.8   1.3   0.9   0.4   0.0   0.0   0.0   0.0   0.0   0.4   0.0   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