Illuminance plots

produced from photometry file ovf1s2d.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] 766646 
# [DATE] 5/19/93  
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] OVF15SXX2D 
# [LUMINAIRE] 150 WATT HPS TYPE II ROADWAY  
# [LAMP] 150W HPS CL ED-23.5  
# [_REFLECTOR] HYDROFORMED ALUMINUM  
# [_REFRACTOR] FLAT GLASS 
# [_SOCKET POSITION] TILTED UP SLIGHTLY FROM HORIZONTAL 
# [_LAMP LUMENS]  16000
# TILT=NONE
# Bulbs: 1,  16000 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:  150 W


# Source file: ovf1s2d.ies
# Luminaire flux = 11687 lm,
#                   73.0 % of the bulb flux
# between 75 and 90:  2.9 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  53.5 cd / 1000 lm ,  0.4 % 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   437 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   725 cd / 1000 lm,
# maximum spec. lum. intensity   725 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   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148   148
  5.0   160   160   162   162   158   159   154   153   151   149   149   149   149   147   146   145   144   144   142   141   141
 15.0   210   208   208   204   198   190   181   173   166   161   160   160   153   145   138   134   131   129   127   126   124
 25.0   181   178   186   189   190   189   184   172   157   148   146   148   161   174   168   153   131   118   113   109   109
 35.0   152   148   146   152   175   186   189   184   167   149   145   143   138   142   144   145   138   108  95.3  89.3  87.1
 45.0   133   134   135   136   134   142   176   223   235   213   202   211   217   200   162   115  95.0  82.4  72.6  66.9  63.3
 50.0   123   123   126   125   122   133   203   340   403   311   269   294   305   222   183   108  86.5  72.4  61.1  53.9  52.1
 55.0   106   101   109   113   112   132   222   453   528   397   346   330   358   195   157  98.1  77.0  61.8  51.8  45.8  43.6
 60.0  66.1  66.2  85.1  97.0   105   118   168   360   460   420   371   295   273   143   115  77.6  61.5  52.3  43.8  36.3  35.4
 62.5  54.8  55.9  71.5  87.2   102   112   158   299   437   395   338   240   187   118  90.2  69.8  57.6  49.4  38.8  31.3  30.4
 65.0  50.8  48.8  61.0  79.5  94.2   106   143   251   435   374   304   207   135  99.2  80.6  65.5  54.4  46.9  35.3  26.2  24.8
 67.5  43.3  41.9  51.8  67.8  84.6  98.5   122   228   485   393   323   230   104  93.6  77.0  64.3  52.4  48.1  34.1  19.2  17.4
 70.0  36.4  37.1  43.1  55.3  72.0  87.2   107   215   650   498   391   253  58.0  40.3  29.8  51.1  47.8  47.6  32.3  15.7  12.8
 72.5  30.2  31.1  34.9  53.3  56.0  49.8  62.4   191   725   516   397   220  44.3  21.3  14.1  13.4  23.1  23.8  15.5   9.1   8.0
 75.0  15.8  21.9  17.3  25.6  22.0  15.5  29.9   136   499   268   209   112  30.6  17.9  10.3   8.7   8.9  11.7   8.7   7.9   7.2
 77.5   3.0   5.3   3.4   5.1   6.4   8.7  17.6  65.8   177  94.3  74.4  47.6  17.7  12.9   7.1   5.7   5.6   5.5   4.4   4.8   4.6
 80.0   1.8   2.0   1.9   2.8   3.7   4.9   8.7  35.3  53.5  31.4  25.8  19.5   9.5   6.9   4.7   3.3   3.2   2.7   2.2   2.5   2.4
 82.5   1.0   1.1   0.9   1.6   1.8   2.5   3.7  10.2  17.5  11.2  10.3   8.9   4.2   3.0   2.2   1.6   1.6   1.2   0.9   1.1   1.0
 85.0   0.2   0.4   0.2   0.5   0.5   0.8   1.3   3.6   6.7   4.3   4.0   3.2   1.1   0.7   0.5   0.4   0.5   0.5   0.3   0.4   0.2
 87.5   0.0   0.1   0.1   0.0   0.0   0.0   0.1   0.8   1.5   0.8   0.6   0.3   0.0   0.0   0.1   0.0   0.1   0.1   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
 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