Bluelight phototherapy is an essential non-invasive interventional therapy method commonly used in jaundice infants or physiological hyperbilirubinemia in the neonatal period. The use of phototherapy helps mobilize unconjugated bilirubin through the process of isomerization into a more water-soluble form of lumirubin that excrete through feces and urine. The source of phototherapy has evolved from conventional fluorescent, LED lights, halogens, and halogen fiberoptic blankets. Research related to the development of phototherapy technology, engineering, and its implementation is continuing because phototherapy is still very varied in health care facilities. The American Academy of Pediatrics (AAP) recommends that conventional phototherapy devices provide a blue-green light spectrum of 8 to 10 µW/cm2/nm at 430-490 nm wavelengths. In comparison, intensive phototherapy (double phototherapy) is given as much of the baby’s surface area as possible through blue-green light spectrum rays of at least 30 mW/cm2/nm at the same wavelength. We are currently developing a prototype phototherapy blanket using LED lights with wavelengths of 460 - 470nm and an area of 50cm x 45cm x 2cm consisting of 18 LED strips each 50cm long. We use parallel-series-parallel circuit schemes to distribute energy evenly throughout the blanket area. LED-Blanket blue light phototherapy is expected to be more practical because it does not require additional tools, is effective, helping to introduce and strengthen the bond of mother and baby, provides breast milk exclusively optimally, and reduces the cost of treatment.

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