Illuminance plots of ge8987

(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 8987
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE DECASHIELD 1000               
# [LAMP] MET 1000                      
# [OTHER] Distribution: FWT CUTOFF
# [MORE] Socket Pos: FIXED                         
# [MORE] Comments: -                             -                             
# [MORE] Revision No:  0  Rev Date: 930121  Test Date: 92110204
# [MORE] Reflector: 440208-01 FWRD THRW             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/ge8987.ies
# Luminaire flux =   700 lm,
#                   70.0 % of the bulb flux
# between 75 and 90:  8.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max 171.0 cd/1000lm ,  2.1 % of the luminaire flux
# 90deg and above:  max   0.0 cd/1000lm ,  0.0 % of the luminaire flux
# CutOff Type: Fully_Shielded 

# 62.5 deg to <67.5 deg:   max   537 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   480 cd/1000lm,
# maximum spec. lum. intensity   537 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  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0  97.0
  5.0   103   104   104   104   104   102   102   102   102   101   101   101   100   100   100  98.0  98.0  98.0  97.0  97.0  97.0  96.0  96.0  96.0  95.0  95.0  95.0  94.0  94.0  94.0  94.0  92.0  92.0  91.0  90.0  90.0
 15.0   126   126   125   124   125   122   118   117   116   113   112   111   109   108   107   105   104   103   102   101   100  97.0  96.0  96.0  94.0  94.0  94.0  93.0  93.0  93.0  93.0  94.0  93.0  93.0  93.0  93.0
 25.0   169   170   168   171   165   154   140   135   130   121   116   113   108   105   103  98.0  96.0  95.0  93.0  92.0  91.0  89.0  88.0  88.0  90.0  90.0  91.0  94.0  95.0  96.0  98.0  98.0  96.0  92.0  92.0  92.0
 35.0   258   258   262   265   234   184   158   149   143   130   124   120   112   108   105  99.0  96.0  94.0  92.0  90.0  89.0  87.0  86.0  86.0  87.0  87.0  88.0  88.0  89.0  89.0  90.0  90.0  90.0  90.0  90.0  90.0
 45.0   281   284   314   328   298   229   189   176   170   158   152   143   125   116   110   100  94.0  91.0  84.0  81.0  80.0  79.0  78.0  79.0  80.0  81.0  81.0  82.0  82.0  82.0  82.0  56.0  23.0  12.0   7.0   4.0
 55.0   392   399   458   495   336   230   216   211   202   183   174   159   129   114   106  90.0  82.0  78.0  72.0  68.0  68.0  69.0  69.0  70.0  73.0  74.0  68.0  57.0  51.0  42.0  14.0   6.0   4.0   2.0   2.0   2.0
 60.0   452   460   498   482   339   260   242   230   219   200   180   160   130   115   100  82.0  74.0  66.0  58.0  58.0  58.0  62.0  63.0  64.0  66.0  54.0  43.0  26.0  19.0  12.0   8.0   3.0   2.0   1.0   1.0   1.0
 62.5   482   490   518   476   340   274   250   238   226   189   174   158   141   121   101  74.0  68.0  61.0  52.0  52.0  52.0  56.0  57.0  58.0  51.0  38.0  26.0  12.0   9.0   6.0   5.0   2.0   1.0   0.0   0.0   0.0
 65.0   512   520   537   470   342   289   256   236   216   194   174   154   132   116   100  64.0  58.0  50.0  45.0  47.0  49.0  50.0  50.0  48.0  23.0  18.0  14.0   6.0   4.0   4.0   2.0   0.0   0.0   0.0   0.0   0.0
 67.5   448   452   480   438   320   290   252   229   206   179   170   160   122   109  96.0  52.0  46.0  40.0  38.0  41.0  44.0  44.0  36.0  28.0   8.0   7.0   6.0   4.0   3.0   2.0   2.0   0.0   0.0   0.0   0.0   0.0
 70.0   384   384   422   406   298   290   240   214   189   163   161   159   125   100  76.0  48.0  42.0  35.0  30.0  34.0  37.0  40.0  28.0  15.0   6.0   5.0   4.0   2.0   2.0   2.0   1.0   0.0   0.0   0.0   0.0   0.0
 72.5   320   316   364   374   276   291   254   219   184   150   146   142   115  87.0  59.0  37.0  32.0  26.0  22.0  23.0  24.0  23.0  17.0  11.0   5.0   4.0   2.0   1.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 75.0   257   249   307   342   254   292   312   268   222   142   133   123  78.0  62.0  46.0  24.0  20.0  16.0  12.0  14.0  14.0  11.0  10.0   9.0   2.0   2.0   1.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 77.5   192   186   230   256   190   219   214   223   232   162   132   102  54.0  43.0  32.0  18.0  15.0  12.0   8.0   8.0   8.0   6.0   4.0   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
 80.0   128   124   154   171   127   146   104   117   130   118   108  98.0  54.0  42.0  31.0  14.0  11.0   8.0   5.0   4.0   4.0   4.0   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
 82.5  64.0  62.0  77.0  86.0  64.0  74.0  24.0  29.0  34.0  42.0  42.0  42.0  33.0  25.0  17.0   7.0   6.0   4.0   2.0   2.0   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   0.0
 85.0   0.0   0.0   0.0   0.0   0.0   1.0   2.0   2.0   2.0   2.0   4.0   4.0   3.0   2.0   2.0   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   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