Illuminance plots

produced from photometry file Hydrel-4650-4008Ua.ies

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:

   
       
# IESNA:LM-63-1995
# [TEST] LRL 400-8U
# [MANUFAC] HYDREL LTG
# [LUMCAT] 4650 100S TSP
# [LUMINAIRE] Accent Light. Die-Cast Aluminum. 
# [MORE] 3002-0 BRIGHT DIPPED SPECULAR CLEAR ANODIZED SPUN REFLECTOR - TSP
# [MORE] 8.5" DIA CLEAR FLAT LENS.   TOTAL WATTS = 130
# [LAMP] CLEAR HIGH PRESSURE SODIUM T-10 PG-12 BASE.
# [LAMPCAT] 1  -  100W HPS WHITE SON
# [_LAMPLUM] 5200 
# [_INFOLINK] www.lithonia.com/visual/ies/ies.asp?vfile=
# TILT=NONE
# Bulbs: 1,   5200 lm each
# Number of measured angles:  20 vertical,   1 horizontal ones
# Photometric type: 1,  Units type: 1
# Luminous opening width, length and height:   0.000   0.000   0.000
# Ballast factor: 1,  Input power:  130 W


# Source file: Hydrel\4650\4008Ua.ies
# Luminaire flux =  2319 lm,
#                   44.6 % 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   1.3 cd/1000lm ,  0.2 % of the luminaire flux
# 90deg and above:  max   0.0 cd/1000lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 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):

  0.0 794.2
  5.0 907.7
 15.0 755.8
 25.0 124.0
 35.0  50.8
 45.0  50.4
 55.0  13.7
 60.0   5.6
 62.5   4.2
 65.0   2.9
 67.5   2.9
 70.0   2.7
 72.5   3.1
 75.0   3.3
 77.5   2.3
 80.0   1.3
 82.5   1.2
 85.0   0.8
 87.5   0.4
 90.0   0.0

 

(A similar table including even some other results can be computed at producer's website.)