Illuminance plots

produced from photometry file ovf4s2d.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] 766653 
# [DATE] 5/21/93  
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] OVF40SXX2D  
# [LUMINAIRE] 400 WATT HPS TYPE II ROADWAY  
# [LAMP] 400W HPS CL E-18  
# [_REFLECTOR] HYDROFORMED ALUMINUM  
# [_REFRACTOR] FLAT GLASS  
# [_SOCKET POSITION] TILTED UP SLIGHTLY FROM HORIZONTAL  
# [_LAMP LUMENS] 50000  
# TILT=NONE
# Bulbs: 1,  50000 lm each
# Number of measured angles:  31 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.400   2.500   0.580
# Ballast factor: 1,  Input power:  400 W


# Source file: ovf4s2d.ies
# Luminaire flux = 37170 lm,
#                   74.3 % of the bulb flux
# between 75 and 90:  3.0 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  43.1 cd / 1000 lm ,  0.5 % 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   367 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   463 cd / 1000 lm,
# maximum spec. lum. intensity   463 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   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163   163
  5.0   173   171   174   172   173   172   167   169   166   165   164   163   161   159   158   156   155   156   155   153   153
 15.0   189   188   189   188   187   184   181   179   175   170   169   167   163   155   147   142   138   135   132   130   129
 25.0   176   177   180   180   180   180   178   174   165   158   156   157   164   165   157   143   130   125   119   113   114
 35.0   158   157   157   162   178   182   179   177   170   164   161   158   152   154   153   143   131   111   101  94.0  92.5
 45.0   142   143   145   146   153   160   172   191   224   259   256   247   239   198   161   129   113  97.7  79.5  71.6  67.8
 50.0   130   131   133   141   137   156   197   263   325   365   368   351   324   252   168   122  98.1  86.6  68.3  60.8  56.0
 55.0   103   105   106   122   124   162   243   340   386   398   401   400   327   202   132  99.6  80.3  70.8  57.1  48.6  47.6
 60.0  72.0  74.5  84.7   101   113   142   236   312   355   381   391   392   262   159   109  80.5  64.2  53.7  45.4  37.0  37.7
 62.5  66.5  63.8  73.7  91.4   109   132   214   303   342   366   367   352   201   128  95.2  74.4  59.7  50.3  39.8  31.3  31.9
 65.0  56.9  54.8  66.5  84.0   101   120   180   276   315   347   353   322   189   111  83.8  69.3  57.2  48.1  37.4  27.7  26.9
 67.5  47.6  48.7  57.1  72.6  92.0   111   150   258   314   375   383   372   166  98.1  76.9  65.5  54.1  48.6  36.5  23.6  22.1
 70.0  37.9  38.6  46.9  58.6  76.4  91.1   123   275   376   456   463   404   110  50.6  32.5  40.4  47.1  44.4  32.9  18.9  16.9
 72.5  26.1  26.9  33.3  42.9  51.1  57.7  92.1   319   398   403   413   278  61.3  27.5  17.1  12.8  20.1  25.7  21.8  14.6  12.5
 75.0  14.5  14.9  19.3  25.4  26.2  27.9  58.0   255   285   230   214   119  43.1  20.4  13.5   8.9   9.1  11.6   9.6   8.6   7.8
 77.5   5.4   5.7   7.8  10.3   8.9  12.1  38.1   124   118  93.9  78.2  47.5  23.7  13.9  10.1   5.8   5.7   5.7   4.8   4.7   4.6
 80.0   1.9   2.0   2.3   3.1   4.1   6.3  20.4  43.1  39.4  32.8  27.8  19.8  13.5   7.8   5.7   3.3   3.3   2.8   2.5   2.5   2.4
 82.5   1.0   1.0   1.2   1.6   2.0   2.9   7.1  11.8  13.2  11.8  10.9   8.7   6.5   3.4   2.5   1.5   1.7   1.3   1.5   1.2   1.2
 85.0   0.4   0.3   0.5   0.6   0.7   1.0   2.4   4.4   4.9   4.4   4.2   3.2   2.1   0.9   0.7   0.3   0.6   0.4   0.6   0.4   0.4
 87.5   0.0   0.0   0.1   0.0   0.1   0.2   0.5   1.3   1.4   1.1   0.9   0.4   0.1   0.0   0.0   0.0   0.1   0.0   0.1   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