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Measurement of Luminance of UV Tanning Appliances WARNING: Intense light. Do not stare at the emitter. Annex AA gives brief guidance on this measurement of the appliance, operated at the rated…

Laser Products Designed to Function as Conventional Lamps The following text refers to IEC 60825-1: 2014 "Safety of Laser Products. part 1: Equipment Classification and…

Method for determination of Cyanosis Observation Index of a Light Source The following text refers to AS/NZS 1680.2.5 Interior Lighting Part 2.5: Hospital and Medical Tasks. One should…

Measurement of Spectral Radiance Spectral radiance in a given direction, at a given point of a real or imaginary surface is defined by the equation: Symbol: Ll Unit: W∙m-2∙sr-1∙nm-1 Where dΦ(λ)…

Measurement of Spectral Radiant Intensity Symbol: I Unit: W∙sr-1∙nm-1 Spectral radiant Intensity in a given direction is defined by the equation: Where dΦ(λ) is the spectral radiant power…

Measurement of Spectral Irradiance Where dΦ(λ) is the radiant power in a wavelength interval dλ, incident on an element of a surface (from the hemipshere above that surface), by the area dA of…