In the electromagnetic spectrum, ultraviolet (UV) light is typically divided into three categories: UV-A, UV-B, and UV-C. The maximum wavelength of UV light depends on the specific category.
UV-A light has longer wavelengths and is closer to the visible light spectrum. It ranges from approximately 315 nanometers (nm) to 400 nm. Therefore, if 405 nm is considered as UV, it would fall within the UV-A range.
UV-B light has shorter wavelengths than UV-A and ranges from approximately 280 nm to 315 nm.
UV-C light has the shortest wavelengths and ranges from approximately 100 nm to 280 nm. However, UV-C light is largely absorbed by the Earth's atmosphere and does not reach the surface.
To summarize, if 405 nm is considered UV, it would fall within the UV-A range, which is generally defined as having wavelengths between 315 nm and 400 nm.