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In the electronics industry, LED UV curing ultraviolet lamps used for conformal coating of circuit boards (PCBs) have radiation, but generally they are harmless to the human body. The details are as follows:

Principle of Radiation: LED UV curing ultraviolet lamps emit ultraviolet rays, allowing the photoinitiators in UV glue to absorb light energy and generate free radicals, which then trigger polymerization reactions to achieve glue curing. This ultraviolet radiation belongs to non-ionizing radiation with low energy and generally does not cause ionization of substances or damage to atomic structures.

Impact on the Human Body: Under normal use conditions, as long as the light source is not directly and continuously exposed for a long time, the radiation of LED UV curing ultraviolet lamps is safe for the human body. However, if appropriate protective measures are not taken and the ultraviolet lamp is stared at for a long time or the skin is exposed to radiation, it may cause harm to the eyes and skin. For example, it may cause keratoconjunctivitis of the eyes, leading to symptoms such as eye pain, photophobia, and tearing. It may also cause redness and sunburn on the skin. When using LED UV curing ultraviolet lamps, operating procedures should be strictly followed and protective glasses and gloves and other protective equipment should be worn to ensure safety.