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
Search:
(clear)
- half scrim
- halo light
- halogen infrared (HIR)
- hand hole
- handheld remote
- hard cyc
- hard light
- hazard or obstruction beacon (aeronautical lighting)
- hazardous location
- headlamp
- headlight
- heat extraction thermal factor
- heavy duty floodlight, HD
- heliotherapy
- Helmholtz-Kohlraush Effect
- hemispherical-conical reflectance
- hemispherical-conical transmittance
- hemispherical-directional reflectance
- hemispherical-directional transmittance
- hemispherical reflectance*
- hemispherical transmittance*
- high-bay lighting
- high hat
- high intensity discharge (HID) lamp
- high-key lighting
- high-mast lighting
- high pressure sodium (HPS) lamp
- horizontal exit
- horizontal plane of a searchlight
- hot-cathode lamp
- house lights
- HSL color space
- HSV color space
- hue-angle bin
- hue angle (h)
- hue of a perceived color
- Hunt Effect
- hybrid LED luminaire
- hydrargyrum medium arc length iodide (HMI) lamp