Illuminance plots of Ge8265a

(as computed by ies2tab from that 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 8265
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE SCM 175                       
# [LAMP] HPS 70 MED                
# [OTHER] Distribution: M-C-III   
# [MORE] Socket Pos: B                             
# [MORE] Comments: FLAT GLASS                    -                             
# [MORE] Revision No:  0  Rev Date: 910925  Test Date: 90082202
# [MORE] Reflector: 35-232112-13                    Refractor: FLAT GLASS                    
# TILT=NONE
# Bulbs: 1,   6000 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:   70 W


# NONSENSE SUMMARY RESULTS of ies2tab: output flux is to be under 100 %!
# Source file: /tmp/Ge8265a.IES
# Luminaire flux =  7031 lm,
#                  117.2 % of the bulb flux
# between 75 and 90:  0.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  15.5 cd / 1000 lm ,  0.0 % 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   540 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   721 cd / 1000 lm,
# maximum spec. lum. intensity   721 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  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   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436   436
  5.0   446   447   449   452   456   459   458   458   458   457   456   456   455   454   454   453   453   452   449   448   447   446   445   444   440   439   437   435   433   432   429   421   416   410   407   405
 15.0   429   438   456   485   508   522   535   540   539   539   539   534   523   518   510   495   488   480   465   457   452   441   436   431   422   417   413   404   400   395   382   369   356   346   334   327
 25.0   360   380   420   434   415   429   472   487   492   503   508   499   480   471   452   415   397   385   362   351   345   333   327   323   315   311   309   304   301   300   296   288   278   265   258   255
 35.0   284   318   387   354   343   340   358   364   376   399   411   406   396   391   372   333   313   305   288   280   275   264   258   253   244   239   236   230   227   225   218   212   211   202   189   182
 45.0   305   315   334   299   259   283   315   326   331   342   347   338   320   311   304   291   284   279   267   261   252   233   224   223   222   221   217   209   205   199   184   171   172   190   185   182
 55.0   147   161   188   281   350   315   349   360   357   350   347   332   303   288   290   293   295   289   277   271   258   233   220   215   207   203   198   190   186   181   168   152   146   140   142   143
 60.0  93.2   103   122   185   246   324   425   433   442   404   388   373   340   340   341   388   411   435   388   345   302   226   208   190   175   169   164   151   146   140   104   100  96.2  90.3  93.7  95.3
 62.5  66.3  73.7  88.5   137   194   328   453   468   483   435   408   382   344   351   357   442   467   491   431   358   284   156   127  97.5  82.8  80.0  77.2  70.5  69.8  69.2  72.3  74.0  71.0  65.5  69.3  71.3
 65.0  39.3  44.7  55.3  89.2   142   332   486   497   508   459   437   414   375   383   391   472   506   540   447   348   249  92.7  69.7  46.5  36.3  35.0  33.7  32.8  33.8  35.0  40.7  47.8  46.0  40.7  45.2  47.3
 67.5  29.5  33.5  41.7  67.7   107   257   556   594   633   592   560   529   463   449   435   517   543   570   452   350   248  89.5  65.7  41.7  30.2  28.2  26.2  23.8  23.3  23.0  31.7  37.2  35.7  32.2  36.7  39.0
 70.0  19.7  22.3  28.0  46.3  72.3   182   603   662   721   686   620   553   430   402   374   422   449   477   363   279   196  68.3  52.7  37.2  28.3  26.7  24.8  20.8  18.3  15.8  22.7  26.5  25.2  23.7  28.3  30.7
 72.5   9.8  11.2  14.3  25.0  37.7   106   444   506   568   557   487   417   269   240   212   253   249   245   154   120  85.2  34.2  29.5  24.8  19.5  18.0  16.3  13.2  11.8  10.5  13.7  15.8  14.7  15.0  20.0  22.5
 75.0   0.0   0.0   0.8   3.5   3.0  31.0   156   185   214   206   177   148  82.8  73.2  63.3  57.2  51.7  46.0  30.5  25.5  20.3  11.8  11.0  10.2   8.3   7.7   7.0   4.3   3.7   3.0   4.8   5.2   4.3   6.5  11.5  14.0
 77.5   0.0   0.0   0.7   2.7   2.3  23.3  16.8  20.0  23.0  18.2  16.3  14.5  10.2   9.3   8.3   7.5   6.8   6.2   5.2   4.0   3.0   2.2   2.2   2.2   1.2   1.2   1.2   0.3   0.2   0.0   3.7   4.0   3.3   5.0   8.7  10.5
 80.0   0.0   0.0   0.3   1.7   1.5  15.5   0.0   0.3   0.8   0.8   0.8   0.8   0.8   0.7   0.3   0.3   0.3   0.3   0.3   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   2.3   2.7   2.2   3.3   5.7   6.8
 82.5   0.0   0.0   0.2   0.8   0.7   7.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.2   1.3   1.0   1.7   2.8   3.3
 85.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   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