Illuminance plots

produced from photometry file hmx9mcm.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] 766065     
# [DATE] 6/17/91  
# [MANUFAC] COOPER LIGHTING   
# [LUMCAT] HMX91MXXCM  
# [LUMINAIRE] 1000W MH TYPE V HIGH MAST  
# [LAMP] 1000W MH CL BT-56  
# [_REFLECTOR] ANODIZED SPUN ALUMINUM  
# [_REFRACTOR] FLAT GLASS 
# [_SOCKET POSITION] VERTICAL BASE UP 
# [_LAMP LUMENS] 110000  
# TILT=NONE
# Bulbs: 1, 110000 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: hmx9mcm.ies
# Luminaire flux = 72549 lm,
#                   66.0 % of the bulb flux
# between 75 and 90:  2.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  11.8 cd / 1000 lm ,  0.6 % 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   248 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   151 cd / 1000 lm,
# maximum spec. lum. intensity   265 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  75.4
  5.0  78.9
 15.0  54.3
 25.0  61.3
 35.0  78.2
 45.0   122
 50.0   179
 55.0   241
 60.0   265
 62.5   248
 65.0   208
 67.5   151
 70.0  98.9
 72.5  62.8
 75.0  37.2
 77.5  21.3
 80.0  11.8
 82.5   5.5
 85.0   2.0
 87.5   0.1
 90.0   0.0
 95.0   0.0
105.0   0.1
115.0   0.2
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