How to compare the brilliance of LEDs and other sources of light?
All LED manufacturers producing quality products provide the luminous flux (measured in lumen) of each product. If this detail of the product is not indicated, then the manufacturer is either a bit forgetful or…. Luminous flux is a detail of the light emitted on the entire surface of the light bulb. In the case of traditional light bulbs this is 360°. The beam angle of the LEDs, on the other hand, varies tremendously. In case of a 120° beam angle LED light bulb the luminous flux can be multiplied with at least two, only to get the roughly comparable data. Full comparison would only be possible with measuring the candela (cd) rate of both lights, which is the light emission from a certain angle, but that is not available with traditional lights. (Lumen / Lux Converter) One of the reasons LEDs are highly energy-saving sources of light is their good concentration of sources. A 120° angle bulb does not enlighten the areas behind the bulb, thus saving wasted energy with traditional light bu
