Illuminance plots

produced from photometry file hmx4snm.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] 766062     
# [DATE] 6/14/91  
# [MANUFAC] COOPER LIGHTING   
# [LUMCAT] HMX40SXXNM 
# [LUMINAIRE] 400W HPS TYPE V HIGH MAST 
# [LAMP] 400W HPS CL E-18  
# [_REFLECTOR] ANODIZED SPUN ALUMINUM
# [_REFRACTOR] NONE	 
# [_SOCKET POSITION] VERTICAL BASE UP
# [_LAMP LUMENS] 50000  
# TILT=NONE
# Bulbs: 1,  50000 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:  400 W


# Source file: hmx4snm.ies
# Luminaire flux = 37499 lm,
#                   75.0 % of the bulb flux
# between 75 and 90: 14.5 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  88.8 cd / 1000 lm ,  5.0 % 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   267 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   274 cd / 1000 lm,
# maximum spec. lum. intensity   274 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  31.9
  5.0  35.6
 15.0  27.1
 25.0  41.2
 35.0  57.1
 45.0  82.9
 50.0   107
 55.0   147
 60.0   207
 62.5   244
 65.0   267
 67.5   274
 70.0   257
 72.5   224
 75.0   181
 77.5   133
 80.0  88.8
 82.5  54.8
 85.0  29.0
 87.5   8.9
 90.0   0.2
 95.0   0.0
105.0   0.0
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