Photometric Viewer Features

Photometric Viewer 3.1 Features and Limitations

Photometric Viewer processes photometric files whose filename ends in .IES and are constructed in accordance with the IESNA standard LM-63 "IESNA Standard File Format for Electronic Transfer of Photometric Data". The Viewer will process data from any of these versions of LM-63: 1986, 1991,1995, or 2002 (except for type A floodlights).

The Photometric Viewer displays data and generates reports in three different formats:

Interior
Area
Floodlight

The following kinds of output are available from each of these formats:

Interior:

Summary Data, including:

Efficiency (total, down and up)

CIE Classification

Spacing Criterion

RP-1-93 VDT Conformance

Zonal Lumen Summary
Average Luminance
Coefficient of Utilization Table
Candela Plot and Table
Room Estimator (for determining how many luminaires are needed to achieve a specified level of illuminance.)
Wallwash estimator (for estimating the pattern of direct illuminance on a wall section given a specified distance from the wall and spacing between luminaires.)

Area

Summary Data, including:

Efficiency (total, down and up)

Plane and Cone Diagram, including intensity and direction (H & V) of max candlepower
Iso-illuminance Diagram (at a user-specified mounting height)
Candela Table
TM-15 Outputs

Flood

Summary Data, including:

Efficiency

NEMA/IES Type

Field Angles (10% of max)

Beam Angles (50% of max)

Candela Trace and Table, including intensity and direction (H & V) of max candlepower
Iso-candela Diagram

The Photometric Viewer can also be used to view two photometric files side-by-side for easy comparison.

Limitations

Photometric Viewer does not operate with Type A floodlight data as is typically used within the automotive industry.
The Area and Wallwash Estimators handle only the direct component and do not include reflected light.