Color
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ANSI/IES LS-5-21
Document Type: Lighting Science (LS)
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Product Description
The understanding of the color properties of light and their applications is finding an unprecedented relevance in the lighting industry. As a result, lighting professionals are faced with an increased need for accurate quantitative and qualitative descriptions of the color-related performance of all light sources. This document covers the basics of color science, including color vision fundamentals and an overview of colorimetry. It also describes color terminology, color properties of light sources, and the use of color in applied lighting, which includes discussions of common color metrics. It focuses on practical use, rather than acting as a historical record.
Page count: 58 pages
Publisher: Illuminating Engineering Society (2021)
SKU: ANSI/IES LS-5-21
ISBN-13: 978-0-87995-396-6
Chapters:
- 1.0 Introduction and Scope
2.0 Basic Concepts
3.0 Human Color Vision
4.0 Colorimetry
5.0 Color Appearance of White Light
6.0 Color Rendition
7.0 Color Measurement
8.0 Light Sources
9.0 Color Systems
10.0 Use of Colored Light
11.0 Color Standards, Specifications, and Product Labeling
12.0 Color Vision Deficiencies
Citation Format:
Illuminating Engineering Society. ANSI/IES LS-5-21, Lighting Science: Color. New York: IES; 2021.
CONTENTS
- 1.0 Introduction and Scope
- 1.1 Introduction
- 1.2 Scope
- 2.0 Basic Concepts
- 2.1 Light
- 2.2 Color
2.2.1 Optical Radiation
2.2.2 Objects - 2.3 Color Terms
- 3.0 Human Color Vision
- 3.1 The Human Eye
- 3.2 Opponent Process Theory
- 3.3 Univariance
- 3.4 Metamerism
- 3.5 Field of View
- 3.6 Chromatic Adaptation and Color Constancy
- 3.7 Color Appearance Phenomena
3.7.1 The Helmholtz-Kohlrausch Effect
3.7.2 The Hunt Effect
3.7.3 The Stevens Effect - 4.0 Colorimetry
- 4.1 Purpose
- 4.2 Tristimulus Functions
- 4.3 Standard Illuminants
- 4.4 Light Source Characterization
4.4.1 Chromaticity
4.4.2 CIE 1931 (x, y) Chromaticity Diagram
4.4.3 Uniform Chromaticity Scale (UCS) Diagrams - 4.5 Characterization of Object Colors
4.5.1 CIE 1976 L*a*b*
4.5.2 CIE 1976 L*u*v*
4.5.3 CAM02-UCS
4.5.4 Color Difference
4.5.5 Advanced Color Appearance Models - 5.0 Color Appearance of White Light
- 5.1 Color Temperature and Correlated Color Temperature (CCT)
- 5.2 Duv
- 5.3 Nominal Designations
- 5.4 Chromaticity Difference
- 5.5 Chromaticity Design Considerations
- 6.0 Color Rendition
- 6.1 Introduction
- 6.2 Concepts of Color Rendition
- 6.3 Standardized Methods for Evaluating Light Source Color Rendition
6.3.1 CIE 13.3-1995
6.3.2 ANSI/IES TM-30-18 and CIE 224:2017 - 6.4 Other Methods for Evaluating Light Source Color Rendition
- 6.5 Performance Criteria and Specifications
- 7.0 Color Measurement
- 7.1 Measuring Color Properties of Light Sources
- 7.2 Measuring Color Properties of Objects
- 7.3 Instrument Selection and Use
- 7.4 Data Formats
- 7.5 Measurement over Time
- 8.0 Light Sources
- 8.1 Color and Efficiency in Light Sources
- 8.2 Color Capability of Light Sources
8.2.1 Daylight
8.2.2 Light Emitting Diode (LED)
8.2.3 Organic Light Emitting Diode (OLED)
8.2.4 High Intensity Discharge
8.2.5 Fluorescent
8.2.6 Induction
8.2.7 Cold Cathode
8.2.8 Plasma
8.2.9 Incandescent and Tungsten-Halogen - 8.3 Summary of Light Source Color Characteristics
- 9.0 Color Systems
- 9.1 Introduction
- 9.2 Color Characterization and Specification Systems for Materials or Objects
9.2.1 Indexing Using Color Mixing
9.2.2 Indexing Using Color Perception
9.2.3 Safety Colors