What does the term 'collimated beam' refer to in laser safety?

The term 'collimated beam' refers specifically to a beam of light where the rays are parallel and maintain minimal spread over distance. This characteristic of having parallel rays is crucial in laser safety because it allows for the accurate delivery of laser energy over long distances without significant dispersion. A collimated beam can travel further and with greater intensity than a beam that diverges or diffuses, making it essential to understand in contexts where distance and precise targeting are involved. The nature of a collimated beam minimizes the risk of unintended exposure and potential hazards, as the high intensity is concentrated in a small area rather than spread out over a larger space. Understanding this concept is vital for ensuring safety protocols are followed when working with lasers.