ANSI/IES LS-1-22, Lighting Science: Nomenclature and Definitions for Illuminating Engineering
The IES defines illumination engineering terms in ANSI/IES LS-1-22, is available here online. You can search terms by their first letter using the categories listed in the Categories window, by the first letter of the term in the alphabetical list below, or by typing the term in the search window. You can find the Introduction material for LS-1-22 on these pages:
- Copyright, Disclaimer, and American National Standards Statement
- Foreword, Nomenclature Committee members, Introduction, and Scope
- Spectral Parameters Used in Illumination Engineering
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- vacancy sensor
- vacuum lamp
- valance
- valance lighting
- value
- vapor-tight luminaire
- VASIS
- veiling brightness
- veiling luminance
- veiling reflection
- vertical plane of a searchlight
- very short flashes
- visibility
- visibility level, VL
- visibility (meteorological)
- visibility performance criteria function, VL8
- visibility reference function, VL1
- visible transmittance
- vision
- visual acuity
- visual angle
- Visual Approach Slope Indicator System (VASIS)
- visual comfort probability, VCP
- visual field
- visual perception
- visual performance
- visual photometer
- visual range (of a light or object)
- visual signal
- visual surround
- visual task
- visual task evaluator (VTE)
- visual threshold in point vision
- voltage to luminaire factor