Details:

The light with a wavelength of 395 nanometers (nm) lies within the ultraviolet A (UVA) range. Specifically, it is close to the boundary between ultraviolet light and visible light. Under normal circumstances, the human eye cannot directly perceive light of this wavelength because the sensitive range of the human visual system is roughly between 380 and 740 nanometers.

However, under specific conditions, high-energy 395-nanometer ultraviolet light can excite fluorescent substances, causing them to emit fluorescence. This phenomenon is called fluorescence emission or photoluminescence. When certain fluorescent materials absorb 395-nanometer ultraviolet light, they will re-radiate photons with longer wavelengths, and these photons often fall within the blue-violet region of the visible spectrum. Therefore, observers can see the fluorescence with a blue-violet hue.

This characteristic is widely applied in multiple fields, such as biomedical imaging, anti-counterfeiting technology, and material analysis in art and archaeology. Understanding this principle helps to gain a deeper understanding of optical phenomena and their applications.

Package:

1pc Original Sharp GH0393AA2G 395nm 350mW TO-18 5.6mm Laser Diode