Illuminance plots of ge8848

(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 8848
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE HIGH MAST/ASM                 
# [LAMP] HPS 200-400                   
# [OTHER] Distribution: M-C-II    
# [MORE] Socket Pos: FIXED                         
# [MORE] Comments: 90 DEG 10IN SHLD:HS&ST SIDE   -                             
# [MORE] Revision No:  0  Rev Date: 920710  Test Date: 92040304
# [MORE] Reflector: -                               Refractor: -                             
# 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/ge8848.ies
# Luminaire flux =   601 lm,
#                   60.1 % of the bulb flux
# between 75 and 90:  4.1 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  69.0 cd/1000lm ,  0.4 % 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   671 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   826 cd/1000lm,
# maximum spec. lum. intensity   834 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   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134
  5.0   134   134   135   136   135   135   134   134   134   135   135   136   137   138   138   137   137   137   138   138   138   137   137   136   135   134   134   134   134   134   133   131   132   132   132   132
 15.0   146   145   142   145   154   161   163   164   166   169   171   173   177   179   180   180   181   181   182   182   180   175   173   171   166   164   161   156   153   151   145   134   121   116   114   113
 25.0   102   108   120   139   157   180   196   202   205   212   215   210   201   196   193   188   185   183   180   178   176   173   171   172   172   173   172   171   170   165   151   139   126   110   100  95.0
 35.0  66.0  73.0  87.0   103   122   152   168   174   174   174   174   172   168   166   166   166   166   164   162   160   159   158   157   157   157   157   156   156   155   154   152   157   147   126   105  94.0
 45.0  53.0  45.0  28.0  36.0  57.0  89.0   155   177   186   205   214   208   196   190   187   180   177   174   166   163   158   147   142   135   122   115   102  76.0  63.0  59.0  46.0  46.0  61.0  48.0  32.0  24.0
 55.0   4.0   3.0   3.0   3.0   8.0  46.0   173   215   253   328   366   365   362   361   321   240   200   186   158   144   138   125   119   115   108   104  89.0  60.0  45.0  40.0  27.0  29.0  28.0  28.0  30.0  31.0
 60.0   2.0   2.0   2.0   2.0   4.0  44.0   199   269   339   474   528   582   625   559   493   303   253   203   152   138   125   115   115   115   115   106  97.0  63.0  48.0  32.0  21.0  19.0  18.0  17.0  20.0  22.0
 62.5   1.0   1.0   2.0   2.0   2.0  44.0   221   294   367   523   577   631   671   608   546   349   288   228   161   142   124   114   114   114   114   105  96.0  62.0  46.0  29.0  18.0  14.0  13.0  12.0  16.0  18.0
 65.0   0.0   0.0   1.0   2.0   1.0  43.0   197   265   334   491   548   604   638   609   580   420   346   272   170   147   125   114   114   114   115   104  93.0  58.0  43.0  27.0  15.0   9.0   8.0   6.0  11.0  14.0
 67.5   0.0   0.0   0.0   2.0   0.0  40.0   146   202   258   419   496   573   634   640   647   542   448   354   183   154   126   114   114   114   110   100  89.0  57.0  42.0  26.0  14.0   8.0   7.0   5.0   8.0  10.0
 70.0   0.0   0.0   0.0   2.0   0.0  38.0   110   152   193   397   510   622   754   790   826   763   612   461   193   158   124   113   111   109   105  94.0  83.0  53.0  38.0  24.0  14.0   6.0   6.0   4.0   6.0   7.0
 72.5   0.0   0.0   0.0   2.0   0.0  36.0  86.0   112   139   345   478   612   766   800   834   764   610   455   155   121  87.0  79.0  78.0  78.0  76.0  68.0  59.0  40.0  30.0  20.0  13.0   4.0   4.0   2.0   4.0   5.0
 75.0   0.0   0.0   0.0   1.0   0.0  33.0  52.0  62.0  73.0   200   297   394   511   542   572   543   450   358   126  95.0  65.0  55.0  52.0  50.0  45.0  40.0  35.0  23.0  17.0  11.0  12.0   2.0   3.0   1.0   2.0   2.0
 77.5   0.0   0.0   0.0   0.0   0.0  24.0  12.0  17.0  22.0  70.0   110   150   203   213   223   209   170   130  37.0  24.0  11.0   6.0   6.0   6.0   5.0   6.0   6.0   6.0   7.0   8.0   9.0   2.0   2.0   0.0   2.0   3.0
 80.0   0.0   0.0   0.0   0.0   0.0  16.0   1.0   3.0   5.0  18.0  30.0  41.0  60.0  64.0  69.0  66.0  54.0  43.0  15.0  10.0   4.0   3.0   2.0   2.0   2.0   2.0   3.0   3.0   4.0   5.0   6.0   1.0   2.0   0.0   1.0   2.0
 82.5   0.0   0.0   0.0   0.0   0.0   8.0   1.0   1.0   1.0   4.0   6.0   9.0  14.0  15.0  16.0  14.0  12.0   9.0   4.0   2.0   1.0   1.0   1.0   1.0   1.0   1.0   1.0   1.0   2.0   2.0   4.0   0.0   1.0   0.0   0.0   0.0
 85.0   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   1.0   1.0   1.0   1.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.0   0.0   0.0   1.0   1.0   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