Lighting Science: Measurement of Light – The Science of Photometry

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ANSI/IES LS-4-20(R2023)
Document Type: Lighting Measurement and Testing (LM)****

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SKU: ANSI/IES LS-4-20(R2023) Category:

Product Description

Approved American National StandardPhotometry is the measurement of radiation accounting for human visual response. This document describes the various types of photometry and photometric instrumentation, including laboratory and field equipment and measurement types, and instructions for some types of field measurements.

Page count: 30 pages
Publisher: Illuminating Engineering Society (2023)
SKU: ANSI/IES LS-4-20(R2023)
ISBN-13: 978-0-87995-289-1

Chapters:

  • 1.0 Introduction and Scope
    2.0 Traceability, Accreditation, and Photometric Standards
    3.0 Visual Photometry
    4.0 Physical Photometry
    5.0 Absolute, Relative, and Substitution Photometry
    6.0 Instrument Accuracy
    7.0 Measuring Spectra
    8.0 Measuring Illuminance
    9.0 Measuring Luminous Intensity
    10.0 Measuring Flux
    11.0 Measuring Luminance
    12.0 Measuring Reflectance and Transmittance
    13.0 Lamp Photometry
    14.0 Luminaire Photometry
    15.0 Field Measurements

Citation Format:
Illuminating Engineering Society. ANSI/IES LS-4-20(R2023), Lighting Science: Measurement of Light – The Science of Photometry. New York: IES; 2023.

CONTENTS

  • 1.0 Introduction and Scope
    • 1.1 Introduction
    • 1.2 Scope
  • 2.0 Traceability, Accreditation, and Photometric Standards
    • 2.1 Traceability and Accreditation
    • 2.2 Photometric Standards
  • 3.0 Visual Photometry
  • 4.0 Physical Photometry
    • 4.1 Types of Detectors
    • 4.2 Detector Spectral Response
    • 4.3 Environmental Factors
  • 5.0 Absolute, Relative, and Substitution Photometry
    • 5.1 Absolute Photometry
    • 5.2 Relative Photometry
    • 5.3 Substitution Photometry
  • 6.0 Instrument Accuracy
    • 6.1 Factors for All Instruments
    • 6.2 Illuminance Meter Cosine Response Error, f2
    • 6.3 Luminance Meter Surround Field Error, f2(u)
  • 7.0 Measuring Spectra
    • 7.1 Using Spectroradiometers
  • 8.0 Measuring Illuminance
    • 8.1 Illuminance Meters
    • 8.2 Angular Response
    • 8.3 Spectral Response
  • 9.0 Measuring Luminous Intensity
    • 9.1 Optical Bench Photometry
    • 9.2 Distribution Photometry
  • 10.0 Measuring Flux
    • 10.1 Integrating Sphere
  • 11.0 Measuring Luminance
    • 11.1 Spot Luminance Meters
    • 11.2 Digital Luminance Meters
  • 12.0 Measuring Reflectance and Transmittance
    • 12.1 Reflectometers (and Transmitometers)
    • 12.2 Field Measurement of Reflectance
  • 13.0 Lamp Photometry
    • 13.1 Characterizing Lamps
    • 13.2 Lamp Testing
  • 14.0 Luminaire Photometry
    • 14.1 Far-Field and Near-Field Photometry
    • 14.2 Absolute Luminaire Photometry
    • 14.3 Relative Luminaire Photometry
    • 14.4 Characterizing Luminaires
    • 14.5 Luminaire Photometric Testing
    • 14.6 Derived Photometric Characteristics
  • 15.0 Field Measurements
    • 15.1 Interior Measurements
    • 15.2 Outdoor Measurements