At the end of the years 1940, wearied not to find a luminary adapted to his activity of general mechanics, Jean-Louis Domecq draws one of them. After some trials and errors, the final drawing is fixed in April 1950. It perfectly corresponds to the requirement specifications fixed : simple, robust and articulated in order to adapt to all working stations.

Extremely from this beautiful invention, he will spend the years 1951 1952 to industrialize the production. In 1953, he creates a compagny dedicated to the marketing of his lamp and whose his initial will form the name : Ji eL Dé.

Since this date, this lamp called Standard by customers, never ceased being product produced and will move by all small keys according to the standards and will adapt sometimes to the needs for some specific applications. Deceased in 1983, he will thus not see, in the 1990's, his successors to take out the Standard of his purely industrial context. Floor lamp, reading light, apply mural, all avoided of glittering colors, the Standard beacame Loft.

Accompagnied by her daughter, the Signal, and the Augustin suspension, the Jieldé lamps are recognized as being icons of the french industrial art. they are always manufactured in Lyon (France) with the same old gestures, all are numbered in order to remain single.