The principle of lamp selection
In lighting design, lamps and lanterns that meet the requirements of use function and lighting quality, are easy to install and maintain, and have low long-term operating costs should be selected. Specifically, the following aspects should be considered:
(1) Optical characteristics, such as light distribution and glare control;
(2) Economics, such as lighting efficiency, initial investment and long-term operating costs;
(3) Special environmental conditions, such as fire hazard, explosion hazard environment, dust, humidity, vibration and chemical corrosion environment;
(4) The shape of lamps and lanterns should be coordinated with the building;
(5) High lamp efficiency (η): η=ΦL/ΦO, depending on the shape and material of the reflector, the size of the light outlet, the shape and material of the diffuser or grille;
(6) IP rating that meets environmental conditions.