Illuminance plots of ge8925

(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 8925
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE DIMENSION (DMY)               
# [LAMP] MET 175-250 / MER 175-250     
# [OTHER] Distribution: VTV       
# [MORE] Socket Pos: FIXED                         
# [MORE] Comments: VERTICAL LAMP                 YOKE MTG                      
# [MORE] Revision No:  0  Rev Date: 930412  Test Date: 92121506
# [MORE] Reflector: 232655-03                       Refractor: CLEAR FLAT GLASS              
# TILT=NONE
# Bulbs: 1,   1000 lm each
# Number of measured angles:  20 vertical,  36 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   1.500  (   0.000 )
# Ballast factor: 1,  Input power:    1 W


# Source file: ies/ge8925.ies
# Luminaire flux =   772 lm,
#                   77.2 % of the bulb flux
# between 75 and 90:  2.5 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  21.0 cd/1000lm ,  0.5 % 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   210 cd/1000lm,
# 67.5 deg to <72.5 deg:   max   152 cd/1000lm,
# maximum spec. lum. intensity   262 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):

#  H:   0.0   5.0  15.0  25.0  35.0  45.0  52.5  55.0  57.5  62.5  65.0  67.5  72.5  75.0  77.5  82.5  85.0  87.5  92.5  95.0  97.5 102.5 105.0 107.5 112.5 115.0 117.5 122.5 125.0 127.5 135.0 145.0 155.0 165.0 175.0 180.0
#V:  
  0.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0  30.0
  5.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0  40.0
 15.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0
 25.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0  91.0
 35.0   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124   124
 45.0   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217   217
 55.0   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262   262
 60.0   220   220   220   220   220   220   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   237   220   220   220   220   220   220
 62.5   200   200   200   200   200   200   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   210   200   200   200   200   200   200
 65.0   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179   179
 67.5   144   144   144   144   144   144   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   152   144   144   144   144   144   144
 70.0   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110   110
 72.5  76.0  76.0  76.0  76.0  76.0  76.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  69.0  76.0  76.0  76.0  76.0  76.0  76.0
 75.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0  42.0
 77.5  32.0  32.0  32.0  32.0  32.0  32.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  23.0  32.0  32.0  32.0  32.0  32.0  32.0
 80.0  21.0  21.0  21.0  21.0  21.0  21.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  11.0  21.0  21.0  21.0  21.0  21.0  21.0
 82.5  10.0  10.0  10.0  10.0  10.0  10.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0   4.0  10.0  10.0  10.0  10.0  10.0  10.0
 85.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 87.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 90.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0