Illuminance plots of za620

(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 14945
# [DATE]09/11/00
# [MANUFAC]RUUD LIGHTING                                                               
# [LUMCAT]ZA620                                                                          
# [LUMINAIRE]16" DIFFUSE SPUN ALUMINUM EZ-BAY NO LENS                                 
# [LAMP]200W PSMH                                                    
#                                                   
# TILT=NONE
# Bulbs: 1,  20000 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.370   1.370   0.000
# Ballast factor: 1,  Input power:  200 W


# Source file: za620.ies
# Luminaire flux = 16330 lm,
#                   81.6 % of the bulb flux
# between 75 and 90:  0.2 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   1.2 cd/1000lm ,  0.0 % 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    26 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    12 cd/1000lm,
# maximum spec. lum. intensity   371 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):

  0.0   333
  2.5   327
  5.0   314
  7.5   305
 10.0   304
 12.5   310
 15.0   322
 17.5   335
 20.0   349
 22.5   359
 25.0   365
 27.5   367
 30.0   369
 32.5   371
 35.0   370
 37.5   363
 40.0   344
 42.5   312
 45.0   272
 47.5   227
 50.0   153
 52.5   101
 55.0  71.7
 57.5  51.8
 60.0  36.9
 62.5  26.2
 65.0  18.1
 67.5  12.4
 70.0   8.3
 72.5   5.3
 75.0   3.4
 77.5   2.0
 80.0   1.2
 82.5   0.6
 85.0   0.3
 87.5   0.1
 90.0   0.0

# IESNA91
# [TEST]LSI 14945
# [DATE]09/11/00
# [MANUFAC]RUUD LIGHTING                                                               
# [LUMCAT]ZA620                                                                          
# [LUMINAIRE]16" DIFFUSE SPUN ALUMINUM EZ-BAY NO LENS                                 
# [LAMP]200W PSMH                                                    
#                                                   
# TILT=NONE
# Bulbs: 1,  20000 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.370   1.370   0.000
# Ballast factor: 1,  Input power:  200 W


# Source file: za620.ies
# Luminaire flux = 16330 lm,
#                   81.6 % of the bulb flux
# between 75 and 90:  0.2 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   1.2 cd / 1000 lm ,  0.0 % 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    26 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    12 cd / 1000 lm,
# maximum spec. lum. intensity   371 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):

  0.0   333
  2.5   327
  5.0   314
  7.5   305
 10.0   304
 12.5   310
 15.0   322
 17.5   335
 20.0   349
 22.5   359
 25.0   365
 27.5   367
 30.0   369
 32.5   371
 35.0   370
 37.5   363
 40.0   344
 42.5   312
 45.0   272
 47.5   227
 50.0   153
 52.5   101
 55.0  71.7
 57.5  51.8
 60.0  36.9
 62.5  26.2
 65.0  18.1
 67.5  12.4
 70.0   8.3
 72.5   5.3
 75.0   3.4
 77.5   2.0
 80.0   1.2
 82.5   0.6
 85.0   0.3
 87.5   0.1
 90.0   0.0