Klieg light

The carbon-arc source was so bright that it allowed film directors to shoot daytime scenes at night.

[3] Although not completely certain, the title of the first ellipsoidal reflector spotlight often goes to the 1933 Klieglight, which was first used to light an outdoor pageant in New York.

Century Lighting introduced their Lekolite, developed by Levy & Kook, hence the name "Leko", in the same year.

The company closed in the 1990s, though members of the original Kliegl family continue to work professionally in the lighting industry to this day.

[4] For example, renowned German-American cinema theorist and sociologist Siegfried Kracauer used the title "Die Jupiterlampen brennen weiter" for his 1926 critique of Sergey Eisenstein's film Battleship Potemkin; this classic text, often used in cinema studies, has been translated into English as "The Klieg Lights Stay On" but in French as "Les lampes Jupiter restent allumées".