With the continuous development of LED, the wavelength characteristics of LED lens source are also studied in depth, and the characteristics of wavelength have also been significantly applied. Here's a brief look at the characteristics of several different wavelength light sources.
UV: the UV LED wavelength ranges from 311nm to 400nm, the wave width is 20nm to 30nm, and the light power is several MW to several hundred mw. UVA can treat skin diseases, such as psoriasis, can also be used for beauty, sterilization and so on.
Infrared: LED infrared chip suitable for manufacturing near red light device, can choose 780nm ~ 1200nm range IR LED, for anti-inflammatory, analgesia, promote metabolism.
Blue light: LED light source in the range of 425nm ~ 475nm, can be used for the treatment of neonatal jaundice, etc.. The LED light source of 446nm ~ 477nm can promote the secretion of pineal amine hormone - melatonin, which regulates the biological cycle of human body, and is beneficial to enhance the vitality of human brain. For example, if the blue LED is wrapped in blanket like babies, it can protect the eyes without using an eye patch in the treatment of neonatal jaundice.
Red light: in the range of 615nm ~ 700nm, red LED can be used as light source, pure light color, red light through photochemical action, can promote cell synthesis, promote wound healing, treatment of a variety of diseases.
Mixed light and white light: white light or several different wavelengths of LED in the same package to mix light, such as yellow green light, violet light and blue green mixed light, etc., can meet the needs of different treatment. White light irradiation with different color temperatures can be used as a treatment for insomnia.
At present, the application of medicine is more convenient, and the use of LED as light source for blue light, red light, near infrared, ultraviolet, multi-color mixed light phototherapy has achieved obvious clinical effect. The developed countries in Europe and America, Japan and other developed countries have introduced all kinds of phototherapy equipment using LED light source, and many achievements have been made in this field in china. There will be more LED products to serve our healthy life in the future.

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