Illuminance plots

produced from photometry file zxd9s1d.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] 765558
# [DATE] 11/25/90
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] ZXD91SXX1D
# [LUMINAIRE] 1000W HPS TYPE I AREA
# [LAMP] 1000W HPS CL ED-37
# [_REFLECTOR] HYDROFORMED ALUMINUM
# [_REFRACTOR] FLAT GLASS
# [_SOCKET POSITION] HORIZONTAL 
# [_LAMP LUMENS] 110000
# TILT=NONE 
# Bulbs: 1, 140000 lm each
# Number of measured angles:  31 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   2.250   2.250   1.200
# Ballast factor: 1,  Input power: 1000 W


# Source file: zxd9s1d.ies
# Luminaire flux = 99173 lm,
#                   70.8 % of the bulb flux
# between 75 and 90:  6.3 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  60.8 cd / 1000 lm ,  1.3 % of the luminaire flux
# 90deg and above:  max   0.5 cd / 1000 lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   201 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   201 cd / 1000 lm,
# maximum spec. lum. intensity   285 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   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130
  5.0   130   131   131   130   129   127   128   127   128   128   128   129   129   130   130   130   131   132   134   135   135
 15.0   131   132   133   135   137   137   138   139   139   139   139   140   140   139   140   141   141   139   136   136   136
 25.0   123   125   131   141   150   153   150   150   151   152   153   153   151   151   152   150   145   135   126   123   124
 35.0   108   109   120   130   140   145   148   154   167   179   180   173   163   150   146   144   140   130   118   108   109
 42.5   102   105   117   130   142   158   165   201   256   283   285   277   247   194   161   157   142   135   119   109   109
 45.0   106   109   116   133   147   165   186   210   235   232   231   240   242   204   176   166   147   139   121   116   116
 50.0   113   112   119   130   151   185   197   197   205   204   203   203   209   199   187   183   151   134   123   119   120
 55.0  93.7   102   110   127   146   168   197   185   186   201   204   192   184   187   193   171   149   125   117   107   104
 60.0  81.3  86.0  95.3   108   135   161   180   181   187   209   214   209   182   177   172   154   138   116   107  95.5   100
 62.5  74.0  80.0  82.5   100   127   157   171   174   183   198   198   201   179   170   166   149   125   103  99.6  94.8  98.4
 65.0  67.0  73.8  71.0  89.3   111   142   160   170   162   167   167   163   159   162   151   140   110  90.0  86.2  90.4  94.6
 67.5  60.0  62.8  62.2  78.7  98.5   128   145   154   172   199   201   201   178   150   139   123  94.8  72.1  70.2  85.5  90.8
 70.0  49.0  51.4  54.9  67.5  85.2   113   130   150   160   181   194   177   169   151   124   107  82.2  62.1  56.0  75.5  82.6
 72.5  37.7  39.3  43.7  63.4  77.2  98.9   115   126   132   145   145   146   132   122   112  96.4  76.2  56.1  46.2  57.2  68.9
 75.0  23.9  26.0  31.7  53.7  82.1  93.8   113   124   131   140   141   139   129   119   107  92.3  74.0  50.6  35.4  34.9  38.1
 77.5  13.3  13.9  17.3  32.5  48.6  80.6  90.8   106   107   119   128   116   114   106  88.4  77.5  60.8  36.2  24.2  19.8  19.0
 80.0   7.5   6.9  10.5  16.9  24.3  37.7  48.9  54.4  49.4  57.7  56.0  56.5  60.8  59.9  54.6  42.2  23.6  20.1  13.2   9.5   9.7
 82.5   3.2   4.1   5.6   7.0   7.9  10.8  14.7  16.4  15.0  14.2  13.4  17.8  11.5  19.5  13.1  14.3   8.0   7.3   7.1   4.9   4.1
 85.0   1.4   1.4   2.5   1.8   3.2   3.2   4.1   4.5   5.9   5.1   5.0   3.8   4.4   4.0   3.8   4.1   3.4   2.8   4.0   2.3   1.8
 87.5   0.2   0.2   0.2   0.2   0.2   0.6   0.3   0.5   0.5   0.5   1.0   0.6   0.9   0.8   0.8   1.0   1.0   1.2   1.2   0.7   0.7
 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   0.2
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   0.2   0.0   0.5
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   0.1   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
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