Illuminance plots of Ge8307a

(as computed by ies2tab from that 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 8307
# [MANUFAC] GE Lighting Systems - Hendersonville  NC  USA
# [LUMCAT] (not specific to a single catalog number)
# [LUMINAIRE] GE DECASHIELD 175 (SPM)          
# [LAMP] HPS 70C MED               
# [OTHER] Distribution: S-C-V     
# [MORE] Socket Pos: FIXED                         
# [MORE] Comments: COATED LAMP - FLAT GLASS      -                             
# [MORE] Revision No:  0  Rev Date: 920310  Test Date: 90091809
# [MORE] Reflector: 35-232929-01                    Refractor: FLAT GLASS                    
# TILT=NONE
# Bulbs: 1,   5800 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:   70 W


# NONSENSE SUMMARY RESULTS of ies2tab: output flux is to be under 100 %!
# Source file: /tmp/Ge8307a.IES
# Luminaire flux =  7167 lm,
#                  123.6 % of the bulb flux
# between 75 and 90:  0.9 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  14.5 cd / 1000 lm ,  0.2 % of the luminaire flux
# 90deg and above:  max   0.0 cd / 1000 lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max   320 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max   200 cd / 1000 lm,
# maximum spec. lum. intensity   431 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):

#  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   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145
  5.0   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150   150
 15.0   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145   145
 25.0   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169   169
 35.0   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228   228
 45.0   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373
 55.0   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431   431
 60.0   344   344   344   344   344   344   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   373   344   344   344   344   344   344
 62.5   300   300   300   300   300   300   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   320   300   300   300   300   300   300
 65.0   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257   257
 67.5   200   200   200   200   200   200   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   189   200   200   200   200   200   200
 70.0   143   143   143   143   143   143   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   121   143   143   143   143   143   143
 72.5  86.0  86.0  86.0  86.0  86.0  86.0  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  67.8  86.0  86.0  86.0  86.0  86.0  86.0
 75.0  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1  29.1
 77.5  21.7  21.7  21.7  21.7  21.7  21.7   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8   4.8  21.7  21.7  21.7  21.7  21.7  21.7
 80.0  14.5  14.5  14.5  14.5  14.5  14.5   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  14.5  14.5  14.5  14.5  14.5  14.5
 82.5   7.2   7.2   7.2   7.2   7.2   7.2   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   7.2   7.2   7.2   7.2   7.2   7.2
 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