A Klieg light is an intense carbon arc lamp especially used in filmmaking . It is named after inventor John Kliegl and his brother Anton Kliegl . Klieg lights usually have a Fresnel lens with a spherical reflector or an ellipsoidal reflector with a lens train containing two plano-convex lenses or a single step lens.
8-431: The carbon-arc source was so bright that it allowed film directors to shoot daytime scenes at night. The ultraviolet rays produced by the light also led to some actors developing an eye inflammation referred to as " Klieg eye ". In the early days of spotlights, the name "Klieg light" became synonymous with any ellipsoidal reflector spotlight (ERS), other carbon-arc sources or any bright source. Initially developed for film,
16-713: Is a stub . You can help Misplaced Pages by expanding it . Actinic conjunctivitis Actinic conjunctivitis is an inflammation of the eye contracted from prolonged exposure to actinic ( ultraviolet ) rays. Symptoms are redness and swelling of the eyes. Most often the condition is caused by prolonged exposure to Klieg lights , therapeutic lamps or acetylene torches. Other names for the condition include Klieg conjunctivitis, eyeburn, arc-flash, welder's conjunctivitis, flash keratoconjunctivitis, actinic ray ophthalmia, X-ray ophthalmia and ultraviolet ray ophthalmia. Conjunctivitis eye condition contracted from exposure to actinic rays. Symptoms are redness and swelling. Conjunctivitis
24-422: Is prevalent among children of the highlands of Ecuador. The finding supports the hypothesis that prolonged exposure to the sun at altitude, in the less dense atmosphere (with the resultant lower UV absorption), is one cause of the condition. The diagnostic process of Actinic conjunctivitis stems from a doctor check-up once symptoms of redness, itching, or infection become evident in one or both eyes. In addition to
32-535: The 1920s. "Kliegl-Leuchte" never caught on and was almost unknown, since the Kliegl Brothers company had limited business in continental Europe. Instead, the generic term was "Jupiterlicht," or literally, Jupiter light , or in French "lampes Jupiter," so named after a Berlin company supplying German and European studios and theater stages. The technical brand name quickly became popular as a generic metaphor for
40-556: The Klieg light was adapted for use as an incandescent stage fixture in 1911. 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. Kliegl Brothers Universal Electric Stage Lighting Company
48-409: The doctor inquiring about your symptoms, the medical appointment can consist of a slit lamp examination to observe the eye closely and in some cases an eye surface swabbing with fluorescein to test for foreign agents in the eye. The wearing of sunglasses and avoiding prolonged sun exposure are the two main ways to prevent actinic conjunctivitis. Once the patient contracts this conjunctivitis, however,
56-429: The movies. 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". This design -related article
64-531: Was founded in 1896 and grew to be the largest stage lighting company in the world. The company closed in the 1990s, though members of the original Kliegl family continue to work professionally in the lighting industry to this day. While the Kliegls were German-born, the "klieg light" generic name for their type of stage and film lights was never popular in Germany, which developed Europe's largest movie industry in
#329670