Illuminance plots

produced from photometry file ovf2s3d.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] 766642
# [DATE] 5/18/93  
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] OVF25SXX3D  
# [LUMINAIRE] 250 WATT HPS TYPE III ROADWAY  
# [LAMP] 250W HPS CL E-18  
# [_REFLECTOR] HYDROFORMED ALUMINUM  
# [_REFRACTOR] FLAT GLASS  
# [_SOCKET POSITION] TILTED UP SLLIGHTLY FROM HORIZONTAL  
# [_LAMP LUMENS] 27500 
# TILT=NONE
# Bulbs: 1,  27500 lm each
# Number of measured angles:  31 vertical,  21 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:  250 W


# Source file: ovf2s3d.ies
# Luminaire flux = 21353 lm,
#                   77.6 % of the bulb flux
# between 75 and 90:  4.3 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  94.5 cd / 1000 lm ,  0.6 % 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   394 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   489 cd / 1000 lm,
# maximum spec. lum. intensity   489 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  55.0  65.0  75.0  85.0  90.0  95.0 105.0 115.0 125.0 135.0 145.0 155.0 165.0 175.0 180.0
#V:  
  0.0   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149   149
  5.0   158   159   158   159   156   155   152   151   151   150   149   149   147   147   146   146   146   146   146   146   146
 15.0   208   201   203   199   194   185   178   172   165   159   157   155   149   144   140   137   135   133   131   131   130
 25.0   215   214   210   205   202   197   191   175   159   154   155   159   170   169   161   151   133   122   117   113   114
 35.0   181   178   180   186   200   206   203   188   170   154   151   150   153   156   149   138   135   111  98.0  90.7  91.6
 45.0   168   165   163   167   177   186   194   208   223   224   233   239   244   203   153   117  98.1  90.9  73.1  67.2  64.0
 50.0   155   154   155   161   158   174   227   297   350   302   294   341   337   231   164   107  89.1  75.5  61.6  54.7  51.9
 55.0   134   129   134   142   142   191   300   410   444   355   341   377   335   192   130  92.8  77.6  63.0  51.3  44.6  42.1
 60.0  88.7  88.4   103   123   134   175   284   399   399   346   325   300   226   132   102  81.5  66.5  53.0  41.9  36.3  35.8
 62.5  79.8  73.6  87.3   110   128   167   273   394   391   335   292   249   175   121  93.9  76.7  62.4  49.1  38.4  30.8  30.0
 65.0  66.4  62.9  75.7  98.5   117   150   253   368   374   307   254   199   135   103  84.4  71.1  58.4  46.5  35.1  25.1  24.1
 67.5  57.9  54.9  65.4  87.2   107   131   200   316   358   305   258   195   123  96.8  82.1  68.5  55.5  46.5  33.0  19.1  17.2
 70.0  49.0  50.8  55.1  72.7  96.3   114   168   310   387   331   304   195  84.8  70.8  61.5  62.2  51.8  46.4  31.3  12.2  11.2
 72.5  38.5  41.7  44.3  55.9  76.0  91.9   150   386   489   360   301   168  45.5  28.8  22.2  20.9  24.6  28.4  22.0  10.8  10.3
 75.0  31.0  28.9  26.9  32.8  41.8  50.4   131   415   436   271   193   109  34.4  25.1  20.1  14.7  13.0  14.9  12.7   8.9   9.6
 77.5  14.3  13.7  10.3  12.0  14.4  17.7  92.2   288   210   103   101  50.2  22.0  19.1  17.2  10.3   8.3   7.6   7.1   6.5   6.4
 80.0   3.5   3.6   3.7   3.7   5.5   8.5  28.5  94.5  68.7  30.7  34.4  20.9  13.5  11.1  10.1   6.0   4.7   3.7   3.4   3.5   3.5
 82.5   1.6   1.6   1.7   1.9   2.8   4.1   7.1  22.8  20.1  10.9  13.1   9.0   6.3   5.1   4.7   2.9   2.5   2.1   1.6   1.7   1.7
 85.0   0.6   0.7   0.7   0.9   1.0   1.5   2.5   6.8   7.1   4.6   5.5   3.2   1.9   1.6   1.7   1.1   1.1   0.9   0.6   0.8   0.6
 87.5   0.0   0.1   0.1   0.1   0.0   0.0   0.6   1.4   1.5   1.3   1.1   0.1   0.1   0.0   0.1   0.1   0.1   0.2   0.0   0.1   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
 95.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
105.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
115.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
125.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
135.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
145.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
155.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
165.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
175.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
180.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0