Gives 750 terms in French, English, Russian, Spanish, German, Italian, Dutch, Polish, Swedish with their definitions in French, English, German and Russian subdivided into the following sections: radiation, quantities and units (60); vision, colour rendering (69); colorimetry (57); emission, optical properties of materials (110); radiometric, photometric and colorimetric measurements, physical detectors (67); actinic effects of optical radiation (27); light sources (73); components of lamps and auxiliary apparatus (37); lighting technology, daylighting (106); luminaires and their components (62); visual signalling (82). Terms are ordered by topics, indices in the above languages give the terms in alphabetic order. An annex contains letter symbols for quantities and units and symbolic notations.