Illuminance plots

produced from photometry file gal4src.ies

spacing 5 plot spacing 6 plot single luminaire plot
In left plots, specific illuminances by a continuous row of luminaires spaced 5 and 6 heights are shown in their left halves (right half concerns 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:

   
       
# IESNA: LM-63-1995
# [TEST] 45543
# [DATE] 5/28/74
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] GAL40SXXRC
# [LUMINAIRE] 400W HPS RECTANGULAR CUTOFF PROFILE FLOODLIGHT
# [LAMP] 400W HPS CL E-18
# [_REFLECTOR] HYDROFORMED ALUMINUM
# [_REFRACTOR] CLEAR FLAT GLASS
# [_SOCKET POSITION] HORIZONTAL
# [_LAMP LUMENS] 50000
# TILT=NONE
# Bulbs: 1,  50000 lm each
# Number of measured angles:  19 vertical,  19 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.000   0.000   0.000
# Ballast factor: 1,  Input power:  400 W


# Source file: gal4src.ies
# Luminaire flux = 24628 lm,
#                   49.3 % of the bulb flux
# between 75 and 90:  1.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  11.3 cd / 1000 lm ,  0.2 % 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   127 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   107 cd / 1000 lm,
# maximum spec. lum. intensity   544 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  10.0  20.0  30.0  40.0  50.0  60.0  70.0  80.0  90.0 100.0 110.0 120.0 130.0 140.0 150.0 160.0 170.0 180.0
#V:  
  0.0   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108   108
  5.0   271   271   265   254   238   219   197   171   143   114   102  90.3  79.6  70.1  62.3  59.9  59.7  59.7  60.0
 10.0   461   461   448   425   388   343   292   237   180   122  93.4  66.4  55.5  53.6  52.2  51.6  51.1  51.1  51.6
 15.0   526   534   543   544   526   449   366   280   195   112  73.3  50.2  46.7  44.3  42.9  44.7  48.1  50.2  51.8
 20.0   509   516   515   512   503   499   414   302   192  87.3  51.8  40.2  35.4  34.4  39.5  45.9  50.9  55.0  57.7
 25.0   538   537   508   473   448   438   439   315   187  68.7  39.7  31.2  24.1  26.1  33.7  36.5  33.4  29.9  29.1
 30.0   525   521   495   445   401   374   378   320   184  60.1  33.8  24.9  18.1  16.5  18.3  16.5  10.2   7.1   5.9
 35.0   449   437   425   401   350   311   304   295   180  56.6  30.9  22.0  14.0   9.5   7.9   4.0   0.0   0.0   0.0
 40.0   371   356   364   365   306   255   226   220   157  53.9  28.4  19.6  10.7   6.9   4.1   0.0   0.0   0.0   0.0
 45.0   292   274   269   310   261   202   168   150   126  48.6  24.7  16.7   7.8   5.3   0.0   0.0   0.0   0.0   0.0
 50.0   212   209   195   210   188   151   128   112   101  42.7  21.0  13.1   6.4   4.1   0.0   0.0   0.0   0.0   0.0
 55.0   167   166   161   150   134   117   101  87.7  78.2  31.4  16.0   9.2   5.1   3.2   0.0   0.0   0.0   0.0   0.0
 60.0   146   145   140   131   113  96.0  80.7  63.1  51.5  20.5  11.1   6.5   4.3   0.0   0.0   0.0   0.0   0.0   0.0
 65.0   127   126   122   116  99.7  76.5  56.5  37.9  25.8  14.0   8.3   4.9   3.6   0.0   0.0   0.0   0.0   0.0   0.0
 70.0  92.5   107   102  94.9  69.4  47.8  39.2  27.6  18.2  11.0   6.3   3.9   3.2   0.0   0.0   0.0   0.0   0.0   0.0
 75.0  35.5  53.5  45.5  44.1  27.7  29.1  28.4  20.7  12.7   7.0   4.4   3.3   2.8   0.0   0.0   0.0   0.0   0.0   0.0
 80.0   0.0   7.5   7.4   7.0   8.2  11.1  11.3   7.9   5.7   4.1   3.3   2.8   2.5   0.0   0.0   0.0   0.0   0.0   0.0
 85.0   0.0   2.7   2.7   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
 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