This is the Skot lamp. It was originally developed by Denmark's LK (Lauritz Knudsen), an electrical products manufacturer, in the early 1900s for use on ships.
A century later, Louis Poulsen produces the Skot for landlubber use. The die-cast aluminum frame holds an injection-molded polycarbonate diffuser. A half-shaded version is available for lighting walkways without providing glare. It's available in painted aluminum or powder-coated silver.
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