We want you to be completely satisfied!

Via the live chat integrated in the shop, the free telephone hotline, by fax or email, we are happy to answer your questions personally and take orders.

Luminous flux

Luminous flux, or simply brightness, is denoted by the unit lumen (lm). Thus, an ordinary 100W incandescent bulb has about 1000 lumens, a T8 58W fluorescent lamp 5200 lumens. The unit lumen has become more important with the spread of LED and energy-saving lamps, since it is not possible to infer lumens from watts as with incandescent lamps. In general, the higher the lumen value, the brighter the lamp.