In the new born period i.e birth to one month jaundice can pose a serious problem, because high level of the billirubin can permanently damage the brain. This indirect billirubin, which is not water soluble, can be decomposed brain to a harmless metabolic, which is water soluble, does not cross blood brain barrier and is rapidly excreted in the bile and urine and so does not accumulate. This is achieved by exposing the infant to bright light (app. 4.5 micro watts/sq.cm/nm) in the range of 420 to 480nm wave length. This is used for treatment of Hyperbillirubiaemia in Neonates, which provides the light source in range of 420-480 nm wave length. Double surface Phototherapy Unit is the combination of over head phototherapy unit and under Surface Phototherapy unit.