Illuminance plots of ge8175

(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] GE 8175
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE UNIGLOW 400/1000 ENCL         
# [LAMP] HPS 750                       
# [OTHER] Distribution: SC 0.8    
# [MORE] Socket Pos: E                             
# [MORE] Comments: 22IN                          -                             
# [MORE] Revision No:  0  Rev Date: 901119  Test Date: 90043004
# [MORE] Reflector: 35-232071-01                    Refractor: FLAT GLASS                    
# TILT=NONE
# Bulbs: 1,  10000 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   1.500  (   0.000 )
# Ballast factor: 1,  Input power:    0 W


# Source file: ies/ge8175.ies
# Luminaire flux =  8053 lm,
#                   80.5 % of the bulb flux
# between 75 and 90:  0.0 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   0.0 cd/1000lm ,  0.0 % 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     6 cd/1000lm,
# 67.5 deg to <72.5 deg:   max     1 cd/1000lm,
# maximum spec. lum. intensity   767 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   685
  5.0   767
 10.0   738
 15.0   620
 20.0   486
 25.0   392
 30.0   323
 35.0   263
 40.0   217
 45.0   179
 50.0   129
 55.0  80.1
 60.0  29.6
 65.0   6.0
 70.0   0.8
 75.0   0.0
 80.0   0.0
 85.0   0.0
 90.0   0.0
 95.0   0.0
100.0   0.0
105.0   0.0
110.0   0.0
115.0   0.0
120.0   0.0
125.0   0.0
130.0   0.0
135.0   0.0
140.0   0.0
145.0   0.0
150.0   0.0
155.0   0.0
160.0   0.0
165.0   0.0
170.0   0.0
175.0   0.0
180.0   0.0