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Approved Method: Photometric Testing of Entertainment Lighting Luminaires Using Incandescent Filament Lamps or High Intensity Discharge Lamps

Photometric Testing of Entertainment Lighting Luminaires Using Incandescent Filament Lamps or High Intensity Discharge Lamps

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ANSI/IES LM-73-18
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-73-18 Category: Tag:

Product Description

Approved American National StandardThis document describes a standard procedure by which entertainment lighting luminaires, specifically designed for use in the theater, TV environment, film studios, or on-location shoots, can be measured. Entertainment lighting luminaires usually have much narrower beam spreads than other luminaires. Therefore, different test methods and forms of presentation may be used. It should be noted that laser systems and scenic projectors are not covered by this document.

Page count: 14 pages
Publisher: Illuminating Engineering Society (2018)
SKU: ANSI/IES LM-73-18
ISBN-13: 978-0-87995-199-0

Chapters:

  • 1.0 Selecting Luminaires
    2.0 Basic Laboratory Conditions
    3.0 Preparation of Equipment for Test
    4.0 Testing by Goniophotometry
    5.0 Test Requirements for Specific Types of Luminaires
    6.0 Computation of Test Results and Test Report

 
Citation Format:
Illuminating Engineering Society. ANSI/IES LM-73-18, Approved Method: Photometric Testing of Entertainment Lighting Luminaires Using Incandescent Filament Lamps or High Intensity Discharge Lamps. New York: IES; 2018.

CONTENTS

  • 1.0 Selecting Luminaires
  • 2.0 Basic Laboratory Conditions
  • 2.1 Stray Light
  • 2.2 Ambient Temperatures
  • 2.3 Test Lamp Selection and Seasoning
  • 2.4 Test Lamp Operation
  • 2.5 Test Distance
  • 2.6 Electrical Requirements
    2.6.1 Lamp Regulation
    2.6.2 Wave Form

  • 2.7 Electrical Instrumentation
    2.7.1 Uncertainties
    2.7.2 Impedance Limitation

  • 2.8 Detectors
  • 3.0 Preparation of Equipment for Test
  • 3.1 Lamp Orientation
    3.1.1 Filament Lamps
    3.1.2 Discharge Lamps

  • 3.2 Focusing
  • 3.3 Cleaning of Optical Parts
  • 4.0 Testing by Goniophotometry
  • 4.1 General
  • 4.2 Polar Axis Coordinates (Type B)
  • 4.3 Positioning the Luminaire
  • 4.4 Moving Cell or Mirror Photometer (Type C)
  • 4.5 Calibration Procedure and Methods (General)
    4.5.1 Relative Calibration Method for Lamp and Goniophotometer
    4.5.2 Absolute Calibration Method

  • 4.6 Selection of Angles for Photometric Measurements
  • 4.7 Detector Size
  • 5.0 Test Requirements for Specific Types of Luminaires
  • 5.1 Fresnel-Lensed Types, Plano-Convex Types, Focusing Scoops, Ellipsoidal Spotlights, and Variable Ellipsoidal Follow Spots
  • 5.2 Ellipsoidal Reflector Luminaires
  • 5.3 Asymmetric Luminaires
  • 5.4 Soft Light Floods
  • 5.5 Multiple-Lamp Luminaires
  • 6.0 Computation of Test Results and Test Report
  • 6.1 Photometric Data Processing
  • 6.2 Test Report
  • Annex A — Measurement Errors Due to the Deviation in System Response from V(λ)
  • Annex B – Calculations of Illuminance Values for Type B Coordinate System
  • Annex C — Calculation of Lumens
  • Annex D – Glossary