Light weaponry refers to weapons that use light energy, such as lasers, to cause damage. Lasers are a type of directed-energy weapon that emits a beam of light that can be used to target and destroy objects. Lasers have been used in military applications since the 1960s, and are now used in a variety of roles, from targeting and surveillance to anti-aircraft defense. They are also used in civilian applications, such as laser pointers and laser tag.