This document describes the procedures to be followed and precautions to be observed in performing reproducible measurements of total flux of lamps and luminaires using integrating sphere measurement systems. Two types of integrating sphere systems are presented, one employing a V(λ)-corrected photometer head, and another employing a spectroradiometer as the detector. In addition to the specifics of the two measurement systems, the common qualities and measurement techniques are discussed along with calibration and uncertainty analysis considerations.
Page count: 21 pages
Publisher: Illuminating Engineering Society (2020)
SKU: ANSI/IES LM-78-20
1.0 Introduction and Scope
2.0 Normative References
3.0 Nomenclature and Definitions
4.0 Physical and Environmental Test Conditions
5.0 Integrating Sphere Equipment
6.0 Calibration Standards
7.0 Test Procedures
8.0 Uncertainty Evaluation
9.0 Maintenance of Integrating Spheres
Illuminating Engineering Society. ANSI/IES LM-78-20, Approved Method: Total Luminous Flux Measurement of Lamps Using an Integrating Sphere Photometer. New York: IES; 2020.