The original colour of any LED crystal is blue. To achieve the white colour, comfortable for eyes, the crystal is covered with yellow luminophore.
The standard solution is to pack the crystal in a separate case and cover it with a thin coating of luminophore.
The CLS principal difference lies in the following: first a large number of low-power crystals is fixed on a PCB of extended size, then it is covered with a coating of transparent compound (4 mm) and a layer of luminophore, mixed with 2 mm silica gel; thus we get ‘remote phosphor’, which better transforms blue into white and produces an even light distribution.
Even crystal distribution supports their comfortable service temperature, which significantly increases Enercom light module service life.