Illuminance plots of rr8dlu26-af

(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]LSI 14696
# [DATE]04/27/00
# [MANUFAC]RUUD LIGHTING                                    
# [LUMCAT]RR8DAU26-AF                                                                    
# [LUMINAIRE]8" RECESSED W/CLEAR ALZAK REFLECTOR                          
# [LAMP]2-26W FL
# 
# TILT=NONE
# Bulbs: 1,   3600 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   0.660  (   0.000 )
# Ballast factor: 1,  Input power:   45 W


# Source file: rr8dlu26-af.ies
# Luminaire flux =  1554 lm,
#                   43.2 % of the bulb flux
# between 75 and 90:  0.2 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   0.8 cd/1000lm ,  0.1 % of the luminaire flux
# 90deg and above:  max   0.1?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     3 cd/1000lm,
# maximum spec. lum. intensity   229 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   222
  2.5   223
  5.0   226
  7.5   228
 10.0   228
 12.5   229
 15.0   229
 17.5   229
 20.0   226
 22.5   221
 25.0   216
 27.5   209
 30.0   201
 32.5   190
 35.0   177
 37.5   162
 40.0   147
 42.5   131
 45.0   116
 47.5  98.9
 50.0  82.3
 52.5  66.0
 55.0  46.0
 57.5  26.1
 60.0  11.3
 62.5   5.9
 65.0   4.3
 67.5   3.4
 70.0   2.7
 72.5   2.1
 75.0   1.6
 77.5   1.1
 80.0   0.8
 82.5   0.5
 85.0   0.3
 87.5   0.2
 90.0   0.1

# IESNA91
# [TEST]LSI 14696
# [DATE]04/27/00
# [MANUFAC]RUUD LIGHTING                                    
# [LUMCAT]RR8DAU26-AF                                                                    
# [LUMINAIRE]8" RECESSED W/CLEAR ALZAK REFLECTOR                          
# [LAMP]2-26W FL
# 
# TILT=NONE
# Bulbs: 1,   3600 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening diameter (and height?):   0.660  (   0.000 )
# Ballast factor: 1,  Input power:   45 W


# Source file: rr8dlu26-af.ies
# Luminaire flux =  1554 lm,
#                   43.2 % of the bulb flux
# between 75 and 90:  0.2 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   0.8 cd / 1000 lm ,  0.1 % of the luminaire flux
# 90deg and above:  max   0.1?cd / 1000 lm ,  0.0?% of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max     6 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max     3 cd / 1000 lm,
# maximum spec. lum. intensity   229 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   222
  2.5   223
  5.0   226
  7.5   228
 10.0   228
 12.5   229
 15.0   229
 17.5   229
 20.0   226
 22.5   221
 25.0   216
 27.5   209
 30.0   201
 32.5   190
 35.0   177
 37.5   162
 40.0   147
 42.5   131
 45.0   116
 47.5  98.9
 50.0  82.3
 52.5  66.0
 55.0  46.0
 57.5  26.1
 60.0  11.3
 62.5   5.9
 65.0   4.3
 67.5   3.4
 70.0   2.7
 72.5   2.1
 75.0   1.6
 77.5   1.1
 80.0   0.8
 82.5   0.5
 85.0   0.3
 87.5   0.2
 90.0   0.1