Whats the Difference between the Lux and Lumens ?
Lumen is the unit of light energy – Lux is the unit of light intensity. Lumen values are required for engineers to decide the design of the luminaire to ensure that the required LUX is available for the Purpose for which the light is used. for example, if you require 100 lux for comfortable reading over 1 sq meter, then you need 100 lumens. If the same 100 lux light is required over 0.25 sq meter area (0.5 x0.5 square), then you require only 25 lumens When the light is kept at a longer distance, the area covered by the light increases in proportion to the square of the distance and lux reduces INVERSLY with the square of the distance. Most of the lights give lights at 360 degree sphere – thus the light produced without reflectors to direct the light to a limited area gives lower lux than the same light with the luminnaire, designed to reflect at least part of the light to where required. One has to remember that the light reflected into the bulb, such as the CFL or the tube-lights gets
