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DIN Standards Committee Lighting Technology

Abstract

DIN 5031‑8 specifies basic radiometric terms and constants in the field of optics and for use in lighting technology. It lists key terms (e.g., wavelength, optical radiation, photon) and specifies the designation of the spectral power distribution as well as types of light and standard illuminants. In addition, the document includes important laws of optical radiation (e.g., Rayleigh–Jeans, Stefan–Boltzmann, Kirchhoff) and a compilation of relevant physical constants.

Begin

2026-04-23

Planned document number

DIN 5031-8

Project number

05800927

Responsible national committee

NA 058-00-01 GA - Joint working committee FNL/FNF: Quantities, symbols and units as well as classifications and data models  

previous edition(s)

Physics of radiation in the field of optics and illuminating engineering; definitions and constants of radiation physics
1982-03