meaning that, even though its lumen rating is high, its candlepower rating is low. How to Convert Lumen to Candlepower and Vice Versa From the above discussion, it is clear that lumen and candlepower measure two different things, and therefore, accurately converting one to another is not possible. However, by applying mathematics, a close-enough approximation can be obtained. For all practical purposes, candlepower equates directly to candela. From its definition, a source of light emitting one candela of luminous intensity uniformly over a solid angle of one steradian is said to be emitting one lumen. The LED (light-emitting diode) was invented by a Russian named Oleg Vladimirovich Losev, in the 1920s. This electronic light source was introduced in the U.S. during the early 1960s. Early versions of LED emitted only low-intensity red light; but now, LED bulbs are available in various colors and wavelengths. At present, LEDs are being used for various purposes. They are highly popular for their durability and efficiency.
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