Illuminance plots of ge8863

(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 8863
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE MINIMOUNT                     
# [LAMP] MET 100                       
# [OTHER] Distribution: SC 1.9    
# [MORE] Socket Pos: FIXED                         
# [MORE] Comments: MED BASE                      -                             
# [MORE] Revision No:  0  Rev Date: 920617  Test Date: 92052704
# [MORE] Reflector: -                               Refractor: -                             
# 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/ge8863.ies
# Luminaire flux =  8372 lm,
#                   83.7 % 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    23 cd/1000lm,
# 67.5 deg to <72.5 deg:   max     7 cd/1000lm,
# maximum spec. lum. intensity   402 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   157
  5.0   173
 10.0   198
 15.0   213
 20.0   216
 25.0   228
 30.0   265
 35.0   337
 40.0   402
 45.0   380
 50.0   265
 55.0   139
 60.0  60.8
 65.0  23.1
 70.0   6.5
 75.0   0.8
 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