Illuminance plots of ge280

(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 280
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE M400A SAG GLASS               
# [LAMP] MET 400                       
# [OTHER] Distribution: M-C-II    
# [MORE] Socket Pos: 3C                            
# [MORE] Comments: 420607-02                     -                             
# [MORE] Revision No:  0  Rev Date: 970409  Test Date: 97010602
# [MORE] Reflector: 431561-01                       Refractor: 639 SAG 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/ge280.ies
# Luminaire flux =   719 lm,
#                   71.9 % of the bulb flux
# between 75 and 90:  1.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  15.0 cd/1000lm ,  0.3 % 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   430 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   888 cd/1000lm,
# maximum spec. lum. intensity   888 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   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137   137
  5.0   138   140   142   146   152   156   156   156   156   158   158   158   158   158   158   156   156   156   154   154   153   152   151   150   147   146   146   144   144   143   140   137   134   134   132   131
 15.0   141   138   147   156   172   182   184   184   184   186   186   186   188   188   186   184   182   180   176   174   171   165   162   160   155   153   152   151   150   150   150   148   144   139   136   134
 25.0   130   130   144   176   220   248   244   242   236   223   217   213   206   202   206   214   218   217   215   214   207   193   186   182   174   170   172   176   178   180   188   188   186   174   154   144
 35.0   124   126   134   158   184   236   268   278   278   280   280   266   240   226   224   222   220   210   188   178   173   163   158   158   160   160   158   155   153   151   144   138   132   129   119   114
 45.0  83.0  86.0  98.0   119   192   254   264   268   274   288   294   290   283   279   260   224   205   200   191   186   187   188   189   187   184   182   180   174   172   166   150   132   125   124   133   138
 55.0  44.0  45.0  60.0  70.0  94.0   122   150   160   186   238   264   284   322   342   323   284   265   246   208   189   186   179   176   169   155   148   148   149   149   149   150   140  99.0  96.0  85.0  80.0
 60.0  30.0  30.0  44.0  55.0  85.0   130   120   124   128   180   217   254   318   324   330   296   270   244   218   211   204   184   172   161   146   146   146   154   153   152   131   124  92.0  86.0  74.0  68.0
 62.5  23.0  23.0  36.0  48.0  80.0   134   131   138   146   192   230   268   322   307   292   233   225   217   232   221   210   173   154   136   135   137   139   146   143   140   122   116  88.0  81.0  68.0  62.0
 65.0  16.0  16.0  28.0  40.0  76.0   137   144   140   136   168   230   294   430   396   360   230   232   232   298   290   280   192   158   126   110   112   116   124   120   116   112   108  84.0  76.0  62.0  55.0
 67.5  13.0  13.0  22.0  31.0  58.0   105  98.0  98.0  99.0   158   282   406   740   650   560   283   266   248   372   382   392   238   171   104  74.0  76.0  78.0  85.0  86.0  87.0  88.0  86.0  68.0  64.0  54.0  49.0
 70.0  10.0  10.0  16.0  22.0  40.0  73.0  62.0  59.0  56.0   108   247   386   888   812   736   342   286   229   398   446   495   315   201  87.0  37.0  38.0  38.0  42.0  43.0  44.0  64.0  64.0  52.0  52.0  45.0  42.0
 72.5   6.0   6.0  10.0  13.0  22.0  41.0  20.0  23.0  26.0  58.0   133   208   484   470   456   236   190   144   256   314   372   291   180  68.0  26.0  24.0  22.0  18.0  19.0  20.0  40.0  42.0  36.0  40.0  36.0  34.0
 75.0   3.0   3.0   4.0   4.0   5.0   9.0  10.0  12.0  13.0  22.0  40.0  56.0   126   138   149  84.0  68.0  54.0  90.0   118   147   150  94.0  39.0  19.0  18.0  15.0  13.0  14.0  14.0  16.0  20.0  20.0  29.0  28.0  28.0
 77.5   2.0   2.0   3.0   3.0   4.0   7.0   7.0   8.0   8.0   9.0  12.0  14.0  24.0  28.0  31.0  24.0  21.0  18.0  24.0  29.0  34.0  35.0  26.0  17.0  12.0  11.0  10.0   8.0   9.0  10.0  12.0  15.0  15.0  22.0  21.0  20.0
 80.0   2.0   2.0   2.0   2.0   2.0   5.0   4.0   4.0   4.0   4.0   5.0   6.0   8.0   9.0  10.0   8.0   8.0   8.0   8.0   8.0   9.0   8.0   8.0   7.0   6.0   5.0   4.0   4.0   5.0   6.0   8.0  10.0  10.0  15.0  14.0  14.0
 82.5   1.0   1.0   1.0   1.0   1.0   3.0   2.0   2.0   2.0   2.0   2.0   2.0   4.0   5.0   6.0   4.0   4.0   3.0   3.0   4.0   4.0   3.0   2.0   2.0   2.0   2.0   2.0   2.0   2.0   2.0   4.0   6.0   6.0   8.0   8.0   8.0
 85.0   0.0   0.0   0.0   0.0   0.0   1.0   1.0   1.0   1.0   2.0   2.0   2.0   2.0   3.0   3.0   3.0   3.0   2.0   2.0   2.0   2.0   2.0   2.0   1.0   1.0   1.0   1.0   1.0   0.0   0.0   0.0   1.0   1.0   1.0   1.0   1.0
 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   1.0   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   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