Illuminance plots of se2510

(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 11595
# [DATE] 10/14/93
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] SE2510
# [LUMINAIRE] 12" SQUARE SECURITY / CEILING CUTOFF
# [LAMP]100W HPS
# TILT=NONE
# Bulbs: 1,   9500 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.000   1.000   0.333
# Ballast factor: 1,  Input power:  115 W


# Source file: se2510.ies
# Luminaire flux =  6454 lm,
#                   67.9 % of the bulb flux
# between 75 and 90:  0.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   2.0 cd/1000lm ,  0.2 % of the luminaire flux
# 90deg and above:  max   0.4?cd/1000lm ,  0.0?% of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max    44 cd/1000lm,
# 67.5 deg to <72.5 deg:   max    13 cd/1000lm,
# maximum spec. lum. intensity   340 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   200
  2.5   190
  5.0   169
  7.5   151
 10.0   140
 12.5   135
 15.0   135
 17.5   138
 20.0   147
 22.5   159
 25.0   171
 27.5   189
 30.0   211
 32.5   239
 35.0   279
 37.5   321
 40.0   340
 42.5   326
 45.0   289
 47.5   239
 50.0   190
 52.5   153
 55.0   130
 57.5   105
 60.0  73.7
 62.5  44.3
 65.0  23.8
 67.5  12.9
 70.0   8.6
 72.5   6.0
 75.0   4.2
 77.5   2.8
 80.0   2.0
 82.5   1.4
 85.0   0.8
 87.5   0.5
 90.0   0.4

# IESNA91
# [TEST] LSI 11595
# [DATE] 10/14/93
# [MANUFAC] RUUD LIGHTING
# [LUMCAT] SE2510
# [LUMINAIRE] 12" SQUARE SECURITY / CEILING CUTOFF
# [LAMP]100W HPS
# TILT=NONE
# Bulbs: 1,   9500 lm each
# Number of measured angles:  37 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous openig width, length and height:   1.000   1.000   0.333
# Ballast factor: 1,  Input power:  115 W


# Source file: se2510.ies
# Luminaire flux =  6454 lm,
#                   67.9 % of the bulb flux
# between 75 and 90:  0.4 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max   2.0 cd / 1000 lm ,  0.2 % of the luminaire flux
# 90deg and above:  max   0.4?cd / 1000 lm ,  0.0?% of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max    44 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    13 cd / 1000 lm,
# maximum spec. lum. intensity   340 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   200
  2.5   190
  5.0   169
  7.5   151
 10.0   140
 12.5   135
 15.0   135
 17.5   138
 20.0   147
 22.5   159
 25.0   171
 27.5   189
 30.0   211
 32.5   239
 35.0   279
 37.5   321
 40.0   340
 42.5   326
 45.0   289
 47.5   239
 50.0   190
 52.5   153
 55.0   130
 57.5   105
 60.0  73.7
 62.5  44.3
 65.0  23.8
 67.5  12.9
 70.0   8.6
 72.5   6.0
 75.0   4.2
 77.5   2.8
 80.0   2.0
 82.5   1.4
 85.0   0.8
 87.5   0.5
 90.0   0.4