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Cool Daylight ≈85 6200 EX-D, ED 865, 867 Cool Daylight ≈85 6500, 6700 ECW, EDK, EDC 872, 874 Cool Daylight ≈85 7200, 7400 EDF, EDX 880 Skywhite ≈85 8000 900-series deluxe rare-earth phosphors tubes Numeric color code Color Approximate CRI Color temperature (K) 930 Warm white ≈95 3000 941 Cool white ≈95 4100 950 Natural Daylight ≈98
Sylvania Lighting (formerly Feilo Sylvania [1]), Havells-Sylvania, and SLI (Sylvania Lighting International), is an international designer and manufacturer of lighting products, trading as Sylvania. It has plants throughout Europe, Asia, North Africa and Central and South America, and is one of the few lighting companies that produces both ...
The Sylvania Smithfield plant later became Channel Master. The rights to the Sylvania name in many countries are held by the U.S. subsidiary of the German company Osram. The Sylvania brand name is owned worldwide, apart from Australia, Canada, Mexico, Thailand, New Zealand, Puerto Rico and the USA, by Havells Sylvania, headquartered in London.
Illuminants A, B, and C were introduced in 1931, with the intention of respectively representing average incandescent light, direct sunlight, and average daylight. Illuminants D (1967) represent variations of daylight, illuminant E is the equal-energy illuminant, while illuminants F (2004) represent fluorescent lamps of various composition.
Continuous daylight autonomy, is similar to daylight autonomy but partial credit is attributed to time steps when the daylight illuminance lies below the minimum illuminance level. [43] For example, if the target illuminance is 400 lux and the calculated value is 200 lux, daylight autonomy would give zero credit, while continuous daylight ...
Daylight harvesting systems use daylight to offset the amount of electric lighting needed to properly light a space, in order to reduce energy consumption. This is accomplished using lighting control systems that are able to dim or switch electric lighting in response to changing daylight availability.
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