Illuminance plots

produced from photometry file ovx2s2df.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] 763837
# [DATE] 3/12/86 
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] OVX25SXX2DF 
# [LUMINAIRE] 250 WATT  HPS TYPE II ROADWAY
# [LAMP] 250W HPS CL E-18   
# [_REFLECTOR] HYDROFORMED ALUMINUM  
# [_REFRACTOR] FLAT GLASS 
# [_SOCKET POSITION] TILTED DOWN SLIGHTLY FROM HORIZONTAL
# [_LAMP LUMENS] 27500
# TILT=NONE
# Bulbs: 1,  27500 lm each
# Number of measured angles:  51 vertical,  24 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:  250 W


# Source file: ovx2s2df.ies
# Luminaire flux = 20498 lm,
#                   74.5 % of the bulb flux
# between 75 and 90:  1.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  15.6 cd / 1000 lm ,  0.2 % 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   541 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   658 cd / 1000 lm,
# maximum spec. lum. intensity   658 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   4.9  14.9  24.9  34.9  44.9  54.9  59.9  64.9  69.9  74.9  79.9  84.9  89.9  94.9 104.9 114.9 124.9 134.9 144.9 154.9 164.9 174.9 180.0
#V:  
  0.0   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281   281
  2.5   289   290   290   290   288   287   287   287   287   286   285   284   282   281   280   279   277   275   274   273   272   271   270   271
  5.0   303   304   303   302   299   296   294   292   291   289   286   284   281   279   277   272   268   264   260   257   255   254   252   252
  7.5   315   315   315   313   309   305   301   299   297   294   289   285   282   278   274   267   259   252   247   242   238   236   235   235
 10.0   326   326   326   324   320   314   309   306   302   298   293   288   283   277   272   261   251   242   234   225   219   214   211   212
 12.5   339   339   339   336   330   324   318   314   309   304   297   291   284   277   270   256   242   229   217   204   191   183   178   178
 15.0   353   353   354   350   343   335   327   322   316   309   301   293   285   276   268   250   233   214   196   177   161   151   145   146
 17.5   365   366   366   362   356   347   337   330   323   315   306   297   288   278   268   245   222   198   174   151   134   124   120   120
 20.0   375   377   376   371   366   358   347   341   333   325   314   304   293   281   268   240   210   181   153   131   116   108   105   105
 22.5   381   383   382   381   376   368   359   353   347   337   325   314   300   284   267   231   196   163   135   117   105  98.0  95.6  95.8
 25.0   375   376   376   380   378   373   371   368   364   357   346   332   314   291   267   222   182   146   122   108  98.1  91.9  88.9  89.2
 27.5   354   357   356   367   369   376   383   385   388   386   375   356   329   296   263   211   167   132   112   102  94.2  87.2  83.5  83.9
 30.0   328   331   331   343   353   375   395   406   415   419   407   379   338   292   253   193   145   120   107  98.2  91.3  84.0  79.5  79.7
 32.5   301   303   305   314   332   366   410   429   446   453   433   388   331   275   228   160   125   112   104  95.9  89.2  82.5  77.3  77.5
 35.0   275   275   278   285   306   350   422   450   470   470   432   366   292   229   186   137   117   109   101  94.4  88.1  82.7  77.6  77.8
 37.5   244   242   249   253   274   329   419   449   463   446   386   304   235   191   163   129   114   108  99.7  92.8  87.5  84.1  80.1  80.5
 40.0   207   205   212   221   239   298   380   404   405   371   312   253   207   176   154   124   114   109  98.8  90.9  87.0  86.1  86.0  87.2
 42.5   157   158   171   188   205   250   313   327   322   303   267   226   192   167   148   124   118   111  98.1  88.8  86.2  88.7  96.7  99.0
 45.0   110   109   129   153   172   198   241   256   262   255   235   210   186   166   149   127   124   112  97.0  87.1  84.6  91.4   112   117
 47.5  82.8  83.6  99.1   120   140   159   192   211   223   228   225   212   192   171   153   133   131   113  95.9  84.7  81.9  92.7   127   135
 50.0  73.5  73.9  84.4  99.9   118   138   163   183   205   224   234   229   210   184   161   141   135   113  93.3  81.3  77.6  89.9   134   145
 52.5  67.4  68.5  77.1  88.3   103   122   147   170   200   232   256   260   238   204   174   149   135   110  88.6  75.5  69.9  80.8   124   135
 55.0  63.7  65.4  73.2  81.4  91.9   109   137   163   204   250   287   298   275   232   191   153   129   101  78.1  64.3  55.8  60.9  97.9   108
 57.5  61.9  64.2  71.4  77.7  85.1   101   131   160   211   270   317   338   318   266   208   140  98.1  68.7  52.0  41.7  34.6  36.6  59.7  66.7
 60.0  61.7  64.8  71.9  75.5  81.0  97.1   126   158   217   291   356   390   371   295   198  92.4  49.4  28.7  19.7  16.5  14.4  16.2  25.7  29.6
 62.5  61.9  65.5  72.9  75.3  78.4  95.5   124   155   222   324   412   450   424   319   180  56.8  27.6  14.9   8.6   6.2   6.3   7.9  11.7  13.8
 65.0  60.5  64.2  72.5  75.1  76.5  94.4   120   149   226   358   484   541   517   377   185  41.3  18.5   9.5   5.1   3.3   3.1   3.6   5.3   6.4
 67.5  56.0  59.6  69.4  72.4  73.6  92.5   114   133   204   392   586   658   601   413   177  28.9  12.1   5.7   2.5   1.3   1.0   1.3   2.0   2.5
 70.0  48.7  52.0  63.8  66.6  69.2  88.0  87.5  86.6   167   412   613   635   533   334   128  18.7   7.2   2.8   0.8   0.3   0.1   0.1   0.3   0.5
 72.5  39.5  43.1  56.7  58.9  62.4  68.1  44.4  55.2   131   328   445   402   290   160  59.2  11.0   3.8   0.9   0.2   0.0   0.0   0.0   0.0   0.0
 75.0  25.1  30.7  47.6  49.0  45.1  26.9  27.3  36.2  76.9   163   184   146  96.0  53.6  22.9   6.0   1.3   0.1   0.0   0.0   0.0   0.0   0.0   0.0
 77.5  11.9  18.5  30.9  27.7  14.9  11.8  15.8  18.9  31.1  51.2  54.1  41.3  28.5  17.1   9.2   2.4   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 80.0   7.6   9.0  14.1   7.8   5.3   5.6   7.9   9.0  11.5  15.1  15.6  12.9   9.4   6.2   3.7   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 82.5   4.9   4.7   5.6   2.8   1.9   2.3   3.5   4.0   4.5   5.2   5.2   4.4   3.3   1.9   0.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 85.0   1.9   1.6   1.3   0.9   0.4   0.6   1.1   1.3   1.5   1.7   1.5   0.9   0.3   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 87.5   0.5   0.3   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   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
 92.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0
 97.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
100.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
102.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0
107.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
110.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
112.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0
117.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
120.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
122.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0