Illuminance plots

produced from photometry file cfb1s77.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] 765160
# [DATE] 1/18/88
# [MANUFAC] COOPER LIGHTING
# [LUMCAT] CFB15SXX77
# [LUMINAIRE] 150W HPS 7H X 7V FLOODLIGHT
# [LAMP] 150W HPS CL E-23.5
# [_REFLECTOR] SEMI-SPECULAR ALUMINUM
# [_REFRACTOR] CLEAR FLAT GLASS
# [_SOCKET POSITION] HORIZONTAL
# [_LAMP LUMENS] 16000
# TILT=NONE
# Bulbs: 1,  16000 lm each
# Number of measured angles:  37 vertical,  15 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.300   1.240   0.600
# Ballast factor: 1,  Input power:  188 W


# Source file: cfb1s77.ies
# Luminaire flux =  9662 lm,
#                   60.4 % of the bulb flux
# between 75 and 90:  1.5 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   8.2 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   118 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   100 cd / 1000 lm,
# maximum spec. lum. intensity   281 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  20.0  40.0  50.0  60.0  70.0  80.0  90.0 100.0 110.0 120.0 130.0 140.0 160.0 180.0
#V:  
  0.0   241   241   241   241   241   241   241   241   241   241   241   241   241   241   241
  2.5   244   243   243   243   243   242   241   241   241   240   240   240   240   239   240
  5.0   245   244   246   247   247   247   245   245   244   243   241   241   239   238   237
  7.5   244   245   250   252   253   253   255   251   249   247   246   243   240   236   235
 10.0   239   243   254   257   262   263   262   257   257   254   249   245   240   228   224
 12.5   230   238   255   262   269   270   269   267   263   258   252   246   237   219   212
 15.0   220   231   253   264   273   277   276   273   268   261   254   244   233   206   197
 17.5   205   222   250   263   275   281   280   277   270   263   255   240   221   191   181
 20.0   194   207   245   260   273   281   280   276   269   262   250   234   209   175   165
 22.5   173   186   237   255   265   274   277   273   265   258   244   224   195   162   149
 25.0   157   167   210   246   257   267   272   266   257   249   234   209   180   149   143
 27.5   147   154   189   222   249   259   266   261   250   243   223   182   166   144   139
 30.0   140   149   173   198   239   252   264   264   250   239   209   164   148   141   135
 32.5   134   144   164   176   229   254   268   267   255   245   190   147   138   137   131
 35.0   127   139   160   161   216   251   266   269   255   247   185   133   130   131   124
 37.5   120   133   153   159   204   247   260   260   248   241   180   127   121   129   121
 40.0   114   125   150   171   193   236   246   246   236   231   175   130   110   125   118
 42.5   107   121   148   172   184   223   231   233   224   220   170   133   108   120   113
 45.0  96.3   114   146   169   171   208   216   216   210   202   160   132   109   114   107
 47.5  88.4   106   141   164   163   185   189   189   195   189   153   131   112   100  93.6
 50.0  76.1   111   136   158   154   170   176   175   175   173   143   128   115  87.0  81.1
 52.5  63.7  71.8   131   147   145   157   165   165   164   159   133   121   115  74.6  67.8
 55.0  53.7  59.6   126   137   133   146   155   155   154   141   121   116   109  63.9  49.6
 57.5  45.6  50.6   106   125   125   131   138   138   143   132   114   110  94.9  50.1  39.2
 60.0  39.7  42.8  88.8   114   118   121   127   127   126   123   108  92.7  70.5  42.8  34.4
 62.5  42.1  44.6  72.1  89.8   109   111   118   118   116   109  98.6  74.1  52.6  39.0  32.4
 65.0  41.9  46.7  52.4  74.3  95.9  99.5   109   109   108   101  87.9  55.3  38.5  36.3  32.4
 67.5  36.9  46.3  51.4  60.1  85.2  92.0  97.4  97.2  99.5  93.8  70.3  37.2  33.3  34.4  32.4
 70.0  30.4  41.5  51.4  49.4  70.3  75.9  33.8  27.6  27.2  82.9  50.3  26.3  31.3  32.9  31.1
 72.5  18.6  37.2  46.3  48.3  19.5  16.1  16.8  16.6  17.0  14.9  18.6  24.0  29.0  29.7  25.4
 75.0  12.3  31.3  38.1  24.5  10.4  10.0  12.9  11.1  12.7  10.6  13.8  20.9  25.6  25.4  20.9
 77.5   8.4  16.1  19.9   7.7   7.5   7.5   8.6   8.4   7.9   7.3   8.4   8.6  14.5  17.0  14.9
 80.0   5.2   6.1   5.4   4.6   5.2   5.2   6.1   6.1   5.4   4.1   4.6   5.2   6.6   8.2   6.1
 82.5   3.9   5.0   2.9   2.9   2.9   2.9   4.1   4.1   3.6   2.8   2.9   3.2   3.9   4.3   3.6
 85.0   2.1   2.9   1.8   1.8   1.8   2.1   1.8   2.1   2.3   1.8   1.8   2.1   1.8   2.1   2.3
 87.5   1.1   1.1   1.1   1.4   1.1   1.1   1.1   1.1   1.1   0.9   0.9   1.1   1.1   1.1   1.4
 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