PROBLEM TO BE SOLVED: To provide laser equipment that can be used in an atmospheric environment and an underwater environment that are affected by steam or the like, and enables efficient work to be performed remotely.SOLUTION: Laser equipment includes: a laser head body; an optical fiber connected to the laser head body; a first collimator lens disposed inside the laser head body; a lens housing including a second collimator lens provided to the tip of the laser head body; and an expansion/contraction cover having an expansion/contraction mechanism and an expansion/contraction part provided to the tip of the laser head body.
