What type of laser is considered a Class 1 laser?

Class 1 lasers are defined as those that are safe for normal use and do not emit hazardous levels of radiation under all conditions of operation, including any foreseeable misuse. This means that individuals can use these lasers without the need for specific safety measures or protective gear, as the output power is low enough to pose no risk to eyes or skin.

Such lasers are commonly found in a variety of applications, including laser printers and CD/DVD players, where they function safely in everyday environments. The classification plays a significant role in promoting safe laser use by ensuring that devices considered to be Class 1 are inherently safe to operate without further protective measures.

In contrast, the other options describe characteristics not applicable to Class 1 lasers. For example, lasers that emit hazardous levels of radiation or require special training typically fall into higher classifications, indicating increased risk and the need for specific safety protocols.