Illuminance plots

produced from photometry file hmx9scm.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] 766069     
# [DATE] 6/18/91  
# [MANUFAC] COOPER LIGHTING   
# [LUMCAT] HMX91SXXCM  
# [LUMINAIRE] 1000W HPS TYPE V HIGH MAST  
# [LAMP] 1000W HPS CL BT-56  
# [_REFLECTOR] ANODIZED SPUN ALUMINUM  
# [_REFRACTOR] FLAT GLASS 
# [_SOCKET POSITION] VERTICAL BASE UP 
# [_LAMP LUMENS] 140000 
# TILT=NONE
# Bulbs: 1, 140000 lm each
# Number of measured angles:  31 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   2.330  (   2.000 )
# Ballast factor: 1,  Input power: 1000 W


# Source file: hmx9scm.ies
# Luminaire flux = 93680 lm,
#                   66.9 % of the bulb flux
# between 75 and 90:  4.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  23.5 cd / 1000 lm ,  1.3 % of the luminaire flux
# 90deg and above:  max   0.2 cd / 1000 lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   177 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   134 cd / 1000 lm,
# maximum spec. lum. intensity   204 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  67.5
  5.0  71.4
 15.0  49.7
 25.0  58.8
 35.0   113
 45.0   180
 50.0   203
 55.0   204
 60.0   189
 62.5   177
 65.0   158
 67.5   134
 70.0   111
 72.5  83.8
 75.0  58.3
 77.5  37.9
 80.0  23.5
 82.5  13.0
 85.0   5.4
 87.5   1.4
 90.0   0.0
 95.0   0.0
105.0   0.2
115.0   0.0
125.0   0.0
135.0   0.0
145.0   0.0
155.0   0.0
165.0   0.0
175.0   0.0
180.0   0.0