Illuminance plots

produced from photometry file gfx9sar.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] 768835
# [DATE] 12/04/01
# [MANUFAC] COOPER LIGHTING  
# [LUMCAT] GFX91SXXAR
# [LUMINAIRE] MEDIUM GALLERIA AREA ROUND
# [LAMP] 1000 WATT HPS CLEAR ED-37
# [_REFLECTOR] PREM SPUN AREA ROUND
# [_REFRACTOR] FLAT GLASS
# [_SOCKETPOS] FIXED VERTICAL
# [_LAMPLUMENS] 135000
# TILT=NONE
# Bulbs: 1, 135000 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   0.000   0.000   0.000
# Ballast factor: 1,  Input power: 1000 W


# Source file: gfx9sar.ies
# Luminaire flux = 95063 lm,
#                   70.4 % of the bulb flux
# between 75 and 90:  2.1 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   7.6 cd / 1000 lm ,  0.3 % 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   226 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   155 cd / 1000 lm,
# maximum spec. lum. intensity   266 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  48.7
  2.5  49.3
  5.0  51.1
  7.5  54.4
 10.0  59.4
 12.5  65.2
 15.0  70.7
 17.5  76.3
 20.0  81.7
 22.5  87.2
 25.0  92.4
 27.5  97.5
 30.0   102
 32.5   104
 35.0   106
 37.5   106
 40.0   109
 42.5   117
 45.0   135
 47.5   164
 50.0   191
 52.5   211
 55.0   244
 57.5   266
 60.0   255
 62.5   226
 65.0   192
 67.5   155
 70.0   120
 72.5  85.0
 75.0  48.5
 77.5  17.6
 80.0   7.6
 82.5   3.4
 85.0   1.2
 87.5   0.2
 90.0   0.0