Illuminance plots of ge8639

(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 8639
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE DECASHIELD 400                
# [LAMP] MET 400C                      
# [OTHER] Distribution:  -C-V     
# [MORE] Socket Pos: 2                             
# [MORE] Comments: -                             -                             
# [MORE] Revision No:  0  Rev Date: 911107  Test Date: 91081906
# [MORE] Reflector: 35-440056-01                    Refractor: FLAT GLASS                    
# TILT=NONE
# Bulbs: 1,  10000 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/ge8639.ies
# Luminaire flux =  7354 lm,
#                   73.5 % of the bulb flux
# between 75 and 90:  2.3 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  19.6 cd/1000lm ,  0.5 % of the luminaire flux
# 90deg and above:  max   0.4?cd/1000lm ,  0.0?% of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   153 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   115 cd/1000lm,
# maximum spec. lum. intensity   241 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   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184   184
  5.0   183   183   183   183   183   184   184   185   185   185   185   185   185   185   185   186   186   186   187   187   187   187   188   188   188   188   188   188   188   188   189   189   189   190   190   190
 15.0   178   179   181   183   185   188   189   190   190   192   192   192   193   194   194   195   196   196   198   198   199   199   200   201   202   203   203   204   204   205   205   206   205   204   204   204
 25.0   174   177   182   189   194   199   201   201   202   204   204   205   206   207   208   210   211   212   214   215   216   218   218   219   220   221   222   223   223   223   224   223   220   215   213   211
 35.0   165   167   172   181   192   205   211   213   214   217   219   220   224   225   226   229   231   232   234   235   236   237   238   239   240   240   240   240   241   240   237   227   215   206   201   198
 45.0   143   144   146   151   157   169   177   179   181   184   185   186   189   190   191   192   193   194   196   197   198   200   202   202   204   205   205   204   203   202   196   188   185   184   181   180
 55.0   114   116   121   132   137   143   147   148   150   155   157   159   164   166   167   169   170   171   174   175   176   178   179   179   179   179   178   174   172   170   165   160   158   153   149   147
 60.0  98.9   102   108   117   122   125   135   136   138   143   146   149   154   154   154   154   155   156   159   160   161   163   164   164   166   165   165   162   161   160   146   140   137   133   129   126
 62.5  91.4  94.8   102   110   114   116   124   126   128   133   135   138   142   142   143   143   143   143   146   148   149   151   152   152   153   153   152   149   148   146   136   130   127   123   118   116
 65.0  84.0  87.7  95.2   102   106   107   112   114   115   119   121   123   126   126   126   125   125   126   128   129   131   134   135   135   136   135   135   132   130   129   126   121   117   113   108   106
 67.5  71.3  74.2  79.8  85.7  88.8  89.8  97.7  99.0   100   102   103   104   105   104   104   103   103   103   105   106   107   110   112   113   115   114   114   112   111   109   104   100  96.8  93.0  89.2  87.3
 70.0  58.6  60.6  64.5  69.0  71.5  72.3  77.4  78.4  79.3  79.1  79.0  78.8  78.4  77.6  76.7  75.3  75.1  74.9  76.0  77.0  78.1  80.7  82.2  83.7  86.5  86.8  87.0  86.3  86.2  86.1  82.7  79.4  76.4  73.2  70.4  69.0
 72.5  45.8  47.0  49.2  52.2  54.2  54.8  56.0  56.4  56.7  56.2  55.6  55.0  54.1  53.5  52.9  51.8  51.8  51.8  52.5  53.2  53.9  55.3  56.1  56.9  58.8  59.0  59.2  59.7  60.4  61.1  61.0  58.8  56.0  53.4  51.6  50.7
 75.0  33.1  33.4  33.8  35.5  36.9  37.3  36.9  36.6  36.4  36.2  36.0  35.9  35.5  34.9  34.3  33.8  33.6  33.4  34.3  34.6  35.0  35.9  36.5  37.1  37.8  37.7  37.6  37.6  37.8  38.0  39.2  38.3  35.7  33.6  32.9  32.6
 77.5  25.0  25.2  25.5  26.8  27.9  28.2  21.9  21.8  21.7  21.7  21.6  21.5  21.2  20.8  20.3  19.8  19.7  19.6  19.6  19.8  20.1  20.5  21.0  21.5  21.7  21.7  21.7  21.7  22.0  22.2  29.4  28.8  26.8  25.2  24.6  24.3
 80.0  16.9  17.0  17.2  18.1  18.9  19.0  11.4  11.3  11.2  11.0  10.8  10.5  10.5  10.2   9.8   9.3   9.3   9.3   9.3   9.4   9.6   9.8   9.9  10.0  10.3  10.2  10.0  10.5  10.5  10.5  19.6  19.2  17.8  16.8  16.4  16.2
 82.5   8.8   8.8   9.0   9.4   9.9   9.8   4.4   4.3   4.2   4.0   4.0   4.0   3.7   3.7   3.7   3.3   3.3   3.3   3.0   3.0   3.0   3.0   3.0   3.0   3.0   3.2   3.5   3.5   3.5   3.5   9.8   9.6   8.9   8.4   8.2   8.1
 85.0   0.7   0.7   0.7   0.7   0.9   0.7   0.9   0.8   0.7   0.2   0.5   0.7   0.5   0.3   0.2   0.5   0.3   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.2   0.0   0.0   0.0   0.0   0.0   0.0
 87.5   0.6   0.6   0.6   0.6   0.6   0.6   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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   0.4   0.4   0.4   0.4   0.4   0.4   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0