Design Considerations for COB Series LED-based Spotlights

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Design Considerations for COB Series LED-based Spotlights

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This application note details the design advantages of COB LEDs with a small light emitting surface (LES), which is a key feature of Nichia’s COB LEDs, and cautions/suggestions when designing them into spotlights while also covering the basic advantages of COB LEDs and the structure of a typical LED spotlight. In recent years, as the number of LED-based products has increased, so too has the level of popularity that LEDs have gained as the chosen light source in a wider range of applications due to their advantages (e.g. low power consumption, long lifetime, etc.). This has encouraged many luminaire designers/manufacturers to use LEDs instead of conventional light sources (e.g. incandescent and fluorescent lamps) and enabled LED luminaires to be used everywhere in homes and offices. Spotlights are one of these luminaires facing this transition: from high-intensity discharge (HID) or halogen spotlights to LED spotlights. There is another noticeable shift in the LED spotlight industry: from SMD LED array modules to assemblies populated with a COB LED.

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