Illuminance plots of qh440

(as computed by ies2tab from that IES photometry file)

spacing 5 plot single luminaire plot
In the left half of the left plot, specific illuminance by a continuous row of luminaires spaced 5 heights is shown (right half is for 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:

   
       
# IESNA91
# [TEST] LSI 7447
# [DATE] 05/03/88
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] QH440
# [LUMINAIRE] 16" QUADRATE HORIZONTAL
# [LAMP] 400 WATT MH
# TILT=NONE
# Bulbs: 1,  36000 lm each
# Number of measured angles:  19 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.160   0.830   0.000
# Ballast factor: 1,  Input power:  455 W


# Source file: qh440.ies
# Luminaire flux = 24694 lm,
#                   68.6 % of the bulb flux
# between 75 and 90:  2.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  44.9 cd/1000lm ,  0.5 % of the luminaire flux
# 90deg and above:  max   0.0 cd/1000lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   340 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   256 cd/1000lm,
# maximum spec. lum. intensity   340 cd/1000lm

# 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   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134
  5.0   136   135   135   136   136   136   136   136   136   136   135   134   134   132   131   130   130   129   129   128   130
 10.0   130   132   134   136   136   139   139   139   138   138   138   136   136   134   132   132   130   130   128   127   128
 15.0   123   123   125   129   132   136   137   138   138   138   138   137   134   133   132   132   132   132   129   127   128
 20.0   115   116   120   123   127   130   132   134   134   135   135   135   134   133   133   134   132   132   130   127   127
 25.0   101   110   112   119   122   125   127   134   138   141   142   141   138   134   136   137   133   128   125   120   121
 30.0  88.8  92.3  99.7   111   115   122   130   140   148   154   155   154   146   140   138   138   131   119   111   105   108
 35.0  78.1  78.8  81.6  93.6   107   118   132   148   165   182   187   184   167   155   146   142   132   114   101  96.4  96.9
 40.0  74.0  73.3  76.0  83.4   103   121   146   170   193   215   224   224   211   195   166   152   134   109  94.3  92.3  90.3
 45.0  71.4  71.9  74.0  80.1  99.7   134   174   209   221   239   245   253   273   268   194   147   123   108  99.1  95.8  92.9
 50.0  71.4  74.7  78.8  85.4   103   133   181   237   237   226   232   237   289   303   214   169   130   131   112   109   101
 55.0  59.2  69.9  83.4   109   123   169   193   305   243   211   221   240   330   326   217   183   136   132   105  84.2  76.6
 60.0  47.0  63.1  92.3   130   131   175   195   272   233   197   204   222   275   302   218   157   146   141  97.7  75.5  68.4
 65.0  29.2  33.3  61.2   137   130   186   217   279   207   144   145   168   264   340   243   173   140   123  80.1  58.3  53.6
 70.0  11.4  19.1  27.2  60.5  74.6   121   170   159   123  74.0  95.6   125   237   256   225   150  96.4  91.8  53.6  36.1  34.8
 75.0   4.8   6.1   5.5  17.8  25.9  50.1  54.9  32.0  29.8  16.3  17.0  21.1  38.8   100  98.4   106  61.8  43.5  24.6  17.0  19.6
 80.0   0.0   0.0   0.0   1.5   2.8  17.0  20.3  12.2   9.6   7.6   6.8   7.4  14.2  38.1  44.9  28.7  12.2   8.9   4.3   2.8   3.3
 85.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   0.4   0.7   1.6   5.5   2.8   1.5   0.4   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

# IESNA91
# [TEST] LSI 7447
# [DATE] 05/03/88
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] QH440
# [LUMINAIRE] 16" QUADRATE HORIZONTAL
# [LAMP] 400 WATT MH
# TILT=NONE
# Bulbs: 1,  36000 lm each
# Number of measured angles:  19 vertical,  21 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.160   0.830   0.000
# Ballast factor: 1,  Input power:  455 W


# Source file: qh440.ies
# Luminaire flux = 24694 lm,
#                   68.6 % of the bulb flux
# between 75 and 90:  2.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  44.9 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   340 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   256 cd / 1000 lm,
# maximum spec. lum. intensity   340 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   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134   134
  5.0   136   135   135   136   136   136   136   136   136   136   135   134   134   132   131   130   130   129   129   128   130
 10.0   130   132   134   136   136   139   139   139   138   138   138   136   136   134   132   132   130   130   128   127   128
 15.0   123   123   125   129   132   136   137   138   138   138   138   137   134   133   132   132   132   132   129   127   128
 20.0   115   116   120   123   127   130   132   134   134   135   135   135   134   133   133   134   132   132   130   127   127
 25.0   101   110   112   119   122   125   127   134   138   141   142   141   138   134   136   137   133   128   125   120   121
 30.0  88.8  92.3  99.7   111   115   122   130   140   148   154   155   154   146   140   138   138   131   119   111   105   108
 35.0  78.1  78.8  81.6  93.6   107   118   132   148   165   182   187   184   167   155   146   142   132   114   101  96.4  96.9
 40.0  74.0  73.3  76.0  83.4   103   121   146   170   193   215   224   224   211   195   166   152   134   109  94.3  92.3  90.3
 45.0  71.4  71.9  74.0  80.1  99.7   134   174   209   221   239   245   253   273   268   194   147   123   108  99.1  95.8  92.9
 50.0  71.4  74.7  78.8  85.4   103   133   181   237   237   226   232   237   289   303   214   169   130   131   112   109   101
 55.0  59.2  69.9  83.4   109   123   169   193   305   243   211   221   240   330   326   217   183   136   132   105  84.2  76.6
 60.0  47.0  63.1  92.3   130   131   175   195   272   233   197   204   222   275   302   218   157   146   141  97.7  75.5  68.4
 65.0  29.2  33.3  61.2   137   130   186   217   279   207   144   145   168   264   340   243   173   140   123  80.1  58.3  53.6
 70.0  11.4  19.1  27.2  60.5  74.6   121   170   159   123  74.0  95.6   125   237   256   225   150  96.4  91.8  53.6  36.1  34.8
 75.0   4.8   6.1   5.5  17.8  25.9  50.1  54.9  32.0  29.8  16.3  17.0  21.1  38.8   100  98.4   106  61.8  43.5  24.6  17.0  19.6
 80.0   0.0   0.0   0.0   1.5   2.8  17.0  20.3  12.2   9.6   7.6   6.8   7.4  14.2  38.1  44.9  28.7  12.2   8.9   4.3   2.8   3.3
 85.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   0.4   0.7   1.6   5.5   2.8   1.5   0.4   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