Illuminance plots

produced from photometry file ovh1s2d.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] 767374 
# [DATE] 7/24/95
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] OVH15SXX2D
# [LUMINAIRE] 150 WATT HPS TYPE II ROADWAY
# [LAMP] 150W HPS CL ED-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,  21 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:  150 W


# Source file: ovh1s2d.ies
# Luminaire flux = 11706 lm,
#                   73.2 % of the bulb flux
# between 75 and 90:  1.8 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  24.0 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   806 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max  1023 cd / 1000 lm,
# maximum spec. lum. intensity  1023 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  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   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139   139
  2.5   154   152   154   151   152   149   148   144   144   142   140   141   138   132   137   130   134   134   133   133   132
  5.0   170   171   169   168   165   159   155   151   147   144   142   141   138   130   135   127   131   129   129   127   128
  7.5   199   202   197   194   184   177   167   161   152   147   146   142   140   132   134   126   129   126   126   124   125
 10.0   253   249   245   234   214   197   180   168   156   148   143   142   141   131   133   125   127   125   121   120   119
 12.5   297   293   296   278   260   229   200   176   162   152   143   145   140   131   132   129   126   122   118   116   115
 15.0   324   324   327   309   295   265   223   186   167   153   144   147   139   130   133   129   126   118   115   111   112
 17.5   335   341   340   329   315   293   243   197   169   155   147   146   138   128   130   130   128   116   111   106   108
 20.0   338   342   343   338   326   305   259   213   174   159   152   146   138   125   126   128   127   114   106   103   102
 22.5   333   335   337   336   335   310   278   226   183   163   157   150   138   124   122   122   125   112   101  99.0  98.0
 25.0   310   319   317   327   333   315   282   242   198   171   160   153   138   122   119   115   120   110  97.0  94.3  94.6
 27.5   271   283   283   308   320   311   283   269   214   175   164   153   137   122   116   109   112   105  92.3  90.6  91.9
 30.0   217   223   235   271   295   294   287   284   230   178   167   152   137   120   114   105   104  98.4  86.9  87.6  87.9
 32.5   180   177   190   218   266   276   305   296   269   193   175   159   137   118   112   102  96.7  89.6  82.4  82.4  83.1
 35.0   156   150   164   178   217   268   319   342   362   226   192   167   131   115   108  97.3  90.3  82.1  77.8  75.7  77.1
 37.5   138   136   146   160   191   271   338   455   429   251   199   166   129   114   105  93.9  85.9  77.4  73.7  71.0  71.6
 40.0   126   126   128   146   190   284   372   479   414   266   205   163   131   113   103  92.6  82.8  75.4  69.6  67.6  66.9
 42.5   118   117   119   140   198   278   358   394   354   241   189   167   131   113   102  90.6  79.4  71.6  64.6  63.2  62.2
 45.0   111   110   113   135   190   233   262   326   324   232   199   180   136   114   101  89.3  78.8  69.6  62.5  60.8  60.2
 47.5   100   101   103   124   167   189   199   264   317   258   223   189   140   112  98.4  86.2  76.8  67.3  59.8  58.1  58.1
 50.0  93.9  95.0  95.3   113   146   167   172   240   316   297   251   194   143   110  98.4  85.5  74.4  65.6  59.5  60.2  60.2
 52.5  89.3  89.6  88.2   104   131   150   163   215   331   332   260   195   141   108  96.7  83.8  70.6  62.2  59.1  65.9  66.3
 55.0  86.5  87.6  82.4  96.0   122   143   170   193   362   350   263   207   139   107  96.0  82.1  69.3  60.2  60.8  77.4  79.1
 57.5  81.1  85.9  76.1  86.9   110   142   178   187   403   362   256   206   136   106  94.6  79.8  66.9  56.1  59.1  84.8  89.9
 60.0  75.7  82.4  70.6  80.1   102   155   175   189   451   452   267   192   134   102  88.9  78.4  63.9  53.1  55.4  83.8  91.9
 62.5  67.6  77.8  66.9  74.4  96.7   168   163   193   654   497   209   168   128  96.7  85.2  74.0  59.1  49.0  48.7  88.2   105
 65.0  58.1  66.9  60.5  66.6  81.4   140   179   231   806   453   191   153   120  90.6  78.4  67.6  54.4  43.6  42.6   102   139
 67.5  49.4  50.7  50.4  57.8  67.6  97.7   186   285   866   468   159   109  87.6  67.9  60.8  56.1  42.9  33.4  33.4   100   151
 70.0  38.5  38.2  40.9  49.7  56.8  72.0   138   313   988   509   111  55.8  40.3  21.3  15.6  18.6  19.9  18.3  20.3  66.3   108
 72.5  23.0  23.0  27.4  33.4  41.3  44.6  54.1   279  1023   323  84.1  43.6  34.5  16.3   8.8   9.1   7.1   3.7   9.4  31.8  48.0
 75.0   9.4   9.4  11.1  13.2  14.9  11.8  24.7   168   452   139  53.8  32.8  31.1  12.8   4.8   5.8   4.8   2.0   5.8  13.5  18.3
 77.5   4.1   3.1   3.4   3.4   3.4   7.1  17.9  42.3   115  50.4  27.1  17.3  19.9   6.1   2.7   3.7   3.1   1.4   3.1   5.8   6.8
 80.0   2.0   2.0   1.7   1.4   2.0   3.1   6.4   9.4  24.0  16.3  10.8   6.1   8.4   2.0   1.4   2.0   1.4   0.7   1.7   2.4   3.4
 82.5   0.7   0.7   0.7   0.7   0.7   2.0   2.0   3.4   6.4   5.1   3.7   1.7   3.1   1.0   0.7   0.7   0.7   0.3   0.7   1.0   1.4
 85.0   0.0   0.0   0.0   0.0   0.0   0.3   0.7   1.0   1.7   1.4   1.0   0.3   0.7   0.0   0.0   0.0   0.0   0.0   0.0   0.3   0.7
 87.5   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
 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