Illuminance plots of ge8887

(as computed by ies2tab from that IES photometry file)

spacing 5 plot single luminaire plot
In the left half of the left plot, specific illuminance by a continuous row of luminaires spaced 5 heights is shown (right half is for 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:

   
       
# IESNA91
# [TEST] GE 8887
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE DIMENSION (DMA)               
# [LAMP] HPS 200-400                   
# [OTHER] Distribution: M-C-III   
# [MORE] Socket Pos: A                             
# [MORE] Comments: -                             -                             
# [MORE] Revision No:  0  Rev Date: 930412  Test Date: 91070802
# [MORE] Reflector: 440088-01                       Refractor: CLEAR FLAT GLASS              
# TILT=NONE
# Bulbs: 1,   1000 lm each
# Number of measured angles:  20 vertical,  36 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   1.500  (   0.000 )
# Ballast factor: 1,  Input power:    1 W


# Source file: ies/ge8887.ies
# Luminaire flux =   777 lm,
#                   77.7 % of the bulb flux
# between 75 and 90:  4.0 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  64.0 cd/1000lm ,  0.7 % of the luminaire flux
# 90deg and above:  max   0.0 cd/1000lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   270 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   259 cd/1000lm,
# maximum spec. lum. intensity   272 cd/1000lm

# 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  52.5  55.0  57.5  62.5  65.0  67.5  72.5  75.0  77.5  82.5  85.0  87.5  92.5  95.0  97.5 102.5 105.0 107.5 112.5 115.0 117.5 122.5 125.0 127.5 135.0 145.0 155.0 165.0 175.0 180.0
#V:  
  0.0   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182
  5.0   184   182   182   181   180   180   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   182   180   180   180   180   179   177   177   176   176
 15.0   182   182   180   178   178   180   181   181   181   182   182   182   182   182   182   182   182   182   181   181   180   179   178   178   176   176   176   174   174   174   173   174   170   168   164   162
 25.0   164   165   171   176   176   174   172   172   173   175   176   177   179   180   181   182   183   183   184   184   184   182   182   182   180   180   179   177   176   175   173   171   170   168   160   156
 35.0   146   148   166   179   184   182   182   182   181   179   178   178   178   178   178   177   177   176   175   174   173   171   170   170   168   168   168   170   170   170   172   174   172   172   178   181
 45.0   154   163   165   182   200   210   202   200   196   187   183   180   175   172   171   169   168   168   169   169   168   165   164   162   158   156   157   158   159   161   168   174   170   164   174   179
 55.0   152   165   168   187   209   224   231   233   234   237   238   230   216   208   202   192   186   183   176   173   169   162   158   154   148   144   144   144   144   146   152   159   154   137   124   118
 60.0   123   130   143   150   174   213   254   258   263   265   264   263   248   239   230   220   216   212   196   188   180   162   154   146   134   131   128   126   125   124   124   127   121   106  92.0  85.0
 62.5   108   113   130   131   156   208   248   256   264   270   266   262   244   240   235   230   228   226   212   203   194   170   158   146   130   126   121   115   114   112   110   111   104  91.0  76.0  68.0
 65.0  94.0  96.0   118   112   138   202   240   244   249   248   242   235   218   214   210   215   217   219   214   208   200   174   160   146   126   120   114   106   104   101  96.0  95.0  88.0  76.0  60.0  52.0
 67.5  76.0  78.0  95.0  92.0   118   184   215   222   228   236   233   230   216   210   204   207   210   212   212   205   198   171   156   142   120   113   106  98.0  94.0  90.0  81.0  78.0  70.0  61.0  50.0  44.0
 70.0  57.0  59.0  72.0  73.0  98.0   165   219   232   246   259   258   257   240   234   228   228   227   226   217   206   194   165   150   136   112   105  98.0  88.0  85.0  82.0  66.0  60.0  52.0  46.0  39.0  36.0
 72.5  38.0  40.0  50.0  54.0  78.0   146   222   239   256   272   272   271   256   249   242   236   232   228   213   200   187   152   137   122  99.0  92.0  85.0  77.0  74.0  71.0  51.0  42.0  34.0  30.0  28.0  27.0
 75.0  20.0  22.0  27.0  34.0  58.0   128   189   202   216   232   232   231   209   196   184   168   161   154   136   124   114  89.0  81.0  72.0  61.0  57.0  54.0  50.0  46.0  44.0  36.0  24.0  16.0  15.0  18.0  20.0
 77.5  15.0  16.0  20.0  26.0  44.0  96.0   111   114   118   118   115   112  96.0  90.0  84.0  78.0  76.0  74.0  65.0  58.0  52.0  37.0  32.0  26.0  18.0  16.0  14.0  14.0  13.0  12.0  27.0  18.0  12.0  12.0  14.0  15.0
 80.0  10.0  11.0  14.0  17.0  29.0  64.0  32.0  36.0  40.0  44.0  43.0  42.0  37.0  34.0  32.0  30.0  29.0  28.0  25.0  22.0  20.0  16.0  14.0  12.0  10.0   9.0   8.0   8.0   8.0   7.0  18.0  12.0   8.0   8.0   9.0  10.0
 82.5   5.0   6.0   7.0   8.0  14.0  32.0   8.0   9.0  10.0  12.0  12.0  12.0  10.0  10.0   9.0   8.0   8.0   8.0   7.0   6.0   6.0   6.0   5.0   4.0   4.0   4.0   3.0   4.0   4.0   3.0   9.0   6.0   4.0   4.0   4.0   4.0
 85.0   0.0   0.0   0.0   0.0   0.0   0.0   2.0   2.0   2.0   2.0   2.0   2.0   2.0   2.0   2.0   1.0   2.0   2.0   2.0   2.0   1.0   1.0   1.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0