Illuminance plots of za540

(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 14949
# [DATE] 09/11/00
# [MANUFAC]RUUD LIGHTING                                                                
# [LUMCAT]ZA540                                                                          
# [LUMINAIRE]16" DIFFUSE SPUN ALUMINUM EZ-BAY NO LENS                                 
# [LAMP]400W HPS                                             
#                                                           
# TILT=NONE
# Bulbs: 1,  51000 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:  400 W


# Source file: za540.ies
# Luminaire flux = 40856 lm,
#                   80.1 % of the bulb flux
# between 75 and 90:  0.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   3.4 cd/1000lm ,  0.2 % 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    75 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    36 cd/1000lm,
# maximum spec. lum. intensity   292 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   197
  2.5   193
  5.0   185
  7.5   179
 10.0   180
 12.5   186
 15.0   195
 17.5   205
 20.0   217
 22.5   226
 25.0   234
 27.5   242
 30.0   251
 32.5   261
 35.0   272
 37.5   282
 40.0   289
 42.5   292
 45.0   290
 47.5   279
 50.0   253
 52.5   220
 55.0   181
 57.5   141
 60.0   102
 62.5  74.5
 65.0  52.8
 67.5  36.5
 70.0  24.2
 72.5  15.5
 75.0   9.7
 77.5   5.8
 80.0   3.4
 82.5   1.8
 85.0   0.9
 87.5   0.2
 90.0   0.0

# IESNA91
# [TEST]LSI 14949
# [DATE] 09/11/00
# [MANUFAC]RUUD LIGHTING                                                                
# [LUMCAT]ZA540                                                                          
# [LUMINAIRE]16" DIFFUSE SPUN ALUMINUM EZ-BAY NO LENS                                 
# [LAMP]400W HPS                                             
#                                                           
# TILT=NONE
# Bulbs: 1,  51000 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:  400 W


# Source file: za540.ies
# Luminaire flux = 40856 lm,
#                   80.1 % of the bulb flux
# between 75 and 90:  0.6 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   3.4 cd / 1000 lm ,  0.2 % 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    75 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    36 cd / 1000 lm,
# maximum spec. lum. intensity   292 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   197
  2.5   193
  5.0   185
  7.5   179
 10.0   180
 12.5   186
 15.0   195
 17.5   205
 20.0   217
 22.5   226
 25.0   234
 27.5   242
 30.0   251
 32.5   261
 35.0   272
 37.5   282
 40.0   289
 42.5   292
 45.0   290
 47.5   279
 50.0   253
 52.5   220
 55.0   181
 57.5   141
 60.0   102
 62.5  74.5
 65.0  52.8
 67.5  36.5
 70.0  24.2
 72.5  15.5
 75.0   9.7
 77.5   5.8
 80.0   3.4
 82.5   1.8
 85.0   0.9
 87.5   0.2
 90.0   0.0