The Summary tab provides the cover page for the IES Road Report. Three sections are shown in this tab: the IES file description calculated characteristics and the Luminaire Classification System (LCS) tabulation for the photometric file.
Banner
You may append a custom banner to your report by clicking in this graphic box. Once in the Banner dialog, you may paste a banner image from the Windows clipboard (use Ctrl-V) or import a graphics image from anywhere on your computer or network. The graphic image must be in BMP, WMF or JPG format.
Luminaire Image
You may associate a luminaire image with this report by clicking in this graphic box. Once in the Luminaire Image dialog, you may paste a graphic image from the Windows clipboard (use Ctrl-V) or import a graphics image from anywhere on your computer or network. The graphic image must be in BMP, WMF or JPG format.
Note: If the photometric file was obtained from the Instabase, the luminaire image from the Instabase is used.
Descriptive Information
This section extracts all descriptive information above the TILT=NONE line in the photometric file. The type of information displayed and completeness of the description is at the manufacturers discretion.
Photometric files using the IESNA 95 or 2002 format will have keywords at the beginning of each line. Keywords are bracketed words used in photometric files to label data. Any number of defined keywords may be used to describe a file.
The descriptive information displayed in this section is not editable here. You must open the photometric file with the Edit Tool to make any changes to its contents.
Photometric Characteristics
The photometric characteristics displayed in the Summary tab are calculated directly by Photometric Toolbox or extracted directly from the photometric file.
Light distribution classifications: Light distribution classifications are based on the isocandela diagram superimposed on a rectangular grid on the roadway. The grid includes a series Longitudinal Roadway Lines (LRL) and a series of Transverse Roadway Lines (TRL), both shown in multiples of mounting height. LRLs run along the roadway and provide IES classification information. TRLs run across the roadway and measure the Longitudinal (vertical) classification.
IES Classification - This classification describes the lateral light distribution with regards to the lighted area width in terms of the mounting height (MH) ratio. The location of the half maximum candela trace within the longitudinal distribution range (Short, Medium or Long) is used. The boundaries for each classification in terms of Longitudinal Roadway Lines (LRL) are shown.
Type I - Half maximum candela trace falls between 1 MH LRL House side and 1 MH LRL Street side.
Type II - Half maximum candela trace on the Street side is beyond the 1 MH LRL but not beyond the 1.75 MH LRL.
Type III - Half maximum candela trace on the Street side is beyond the 1.75 MH LRL but not beyond the 2.75 MH LRL.
Type IV - Half maximum candela trace on the Street side is beyond the 2.75 MH LRL.
Type V - Distribution is totally symmetrical
Type VS - Zonal lumens for each of the eight horizontal octants (0-45, 45-90, 90-135, 135-80, 180-225, 225-270, 270-315, 315-360) are within +-10% of the average zonal lumens of all octants
Longitudinal Classification - This classification describes the vertical light distribution along the roadway. The classification is calculated by determining the location of the maximum candela point in terms of the mounting height ratio. The boundaries for each classification in terms of Transverse Roadway Lines (TRL) are shown.
Note: IES and Longitudinal Classification are NOT calculated (= N.A.) for files where; Maximum Candela Vertical Angle >= 90 degrees, Maximum Candela Horizontal Angle falls on the House Side (exception Type V or VS), CIE Type = Indirect or asymmetric distributions where 'type' is not the same in the 0-90 and 270-360 quadrants.
Cutoff Classification (deprecated) - The Cutoff classifications are based on the candela values measure at 80 degrees above nadir (vertical) and higher, in any horizontal angle. The luminaire cutoff classification has been deprecated by the IESNA in 2007; it is superseded by the Luminaire Classification System (LCS). The value is not applicable for absolute photometry.
Lumens Per Lamp - The manufacturers rated lumen output per lamp. The value is not applicable for absolute photometry.
Total Lamp Lumens - Lumen Per Lamp * Number Of Lamps. This value is not applicable for absolute photometry.
Luminaire Lumens - Total Lumens exiting the luminaire (this is a calculated metric).
Downward Total Efficiency - The ratio of total downward lumens (0 to 90 degrees vertical) to the total lumens.
Luminaire Efficacy Rating (LER) - A rating is a measure of a luminaire's energy efficiency. LER is a measure of the luminaire's rated lumen output divided by its input power. LER has only been validated for the following indoor distribution luminaires described by NEMA; fluorescent, commercial downlights and HID Industrial luminaires. The luminaire product category is not reported by PTB, only the LER value, as the product information is not extractable from the IES file.
LER = [luminaire efficiency (EFF) x total lumens (or luminaire lumens if absolute photometry) (TL) x ballast factor (BF)] divided by [luminaire watts input] ]
LER Notes:
Upward Waste Light Ratio - The ratio of the lumens at 90-degrees vertical and above to the total lumens emitting from the luminaire. Basically, the ratio of light that never makes to the ground, ergo, wasted! Like LCS, UWLR is not calculated for photometric files where the upper hemisphere of the report appears to be 'chopped off'' (see Technical Details in the LCS section).
Maximum Candela <90 Degrees Vertical - The maximum recorded candela value below 90 degrees vertical in the photometric file. Note: This may not be the maximum candela value in the entire exploration if there is substantial uplight.
Maximum Candela Angle <90 Degrees Vertical - The location of the maximum candela value below 90 degrees vertical in terms of horizontal and vertical angles. For example, 60H, 40V indicates that the maximum candela value occurs in the 60 degree horizontal angle at 40 degrees above nadir (vertical).
Maximum Candela at 90 Degrees Vertical - The maximum candela value reported for all horizontal angles at the 90 degree vertical angle.
Maximum Candela from 80 to <90 Degrees Vertical - The maximum candela value reported for all horizontal angles from 80 degrees vertical up to, but not including, 90 degrees vertical.
Total Luminaire Watts - The luminaire wattage extracted from the photometric file. It may be modified by using the Edit tool.
Ballast Factor - The ballast factor extracted from the photometric file. It may be modified by using the Edit tool.
Luminaire Classification System (LCS)
The IESNA Luminaire Classification System (LCS) defines the distribution of light into 10 solid angles. The LCS metrics are an indicator of optical distribution and are intended to be used in conjunction with the IES and Longitudinal Classifications to provide a thorough analysis of the light distribution. While the application of the LCS metrics are to be addressed in individual IESNA Recommended practices, the intended use is to provide data that allows evaluation of light trespass and sky glow.
The LCS metrics within each zone are reported in lumen totals as well as percent lamp lumens and percent luminaire lumens.
FL - Forward light low secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 0 and 30 degrees vertical in front of the luminaire. The light emitted from nadir up to 0.6 mounting heights in front of the luminaire.
FM - Forward light mid secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 30 and 60 degrees vertical in front of the luminaire. The light emitted from 0.6 mounting heights up to 1.7 mounting heights in front of the luminaire.
FH – Forward light high secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 60 and 80 degrees vertical in front of the luminaire. The light emitted from 1.7 mounting heights up to 5.7 mounting heights in front of the luminaire.
FVH – Forward light very high secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 80 and 90 degrees vertical in front of the luminaire. The light emitted beyond 5.7 mounting heights in front of the luminaire.
BL - Back light low secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 0 and 30 degrees vertical behind the luminaire. The light emitted from nadir up to 0.6 mounting heights behind the luminaire.
BM - Back light mid secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 30 and 60 degrees vertical behind the luminaire. The light emitted from 0.6 mounting heights up to 1.7 mounting heights behind the luminaire.
BH – Back light high secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 60 and 80 degrees vertical behind the luminaire. The light emitted from 1.7 mounting heights up to 5.7 mounting heights behind the luminaire.
BVH – Back light very high secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 80 and 90 degrees vertical behind the luminaire. The light emitted beyond 5.7 mounting heights behind the luminaire.
UL - Uplight low secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 90 and 100 degrees 360 degrees around the luminaire. The light emitted at or slightly above 90 degrees will impact sky glow when observed from large distances.
UH – Uplight high secondary angle - Lumens, Percent Lamp Lumens and Percent Luminaire Lumens between 100 and 180 degrees 360 degrees around the luminaire. The light emitted at angles above 100 degrees will impact sky glow directly overhead.
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LCS Rating (or BUG Rating) - BUG Rating (backlight, Uplight and Glare) is used to evaluate a luminaires optical performance related to light trespass, sky glow and high angle brightness control (or lack there of!). These ratings are based on zonal lumen limits for each of the zones described above. Please see IESNA TM-15-11 Luminaire Classification System for Outdoor Luminaires for more information.
Technical Details
