Abstract: This laser processing device includes an imaging portion accommodated in a housing of a head unit that accommodates a scanning portion. The imaging portion acquires a target object image including at least a portion of a machining region, by imaging a machining target through protective glass. The imaging portion is disposed in such a way that an imaging axis for acquiring the target object image intersects a vertical axis of the protective glass in a position a prescribed first distance from the protective glass.

Abstract: In the present invention, a head connector comprises an optical axis adjustment unit that adjusts the optical axis of a laser beam emitted from a tip of an optical fiber cable, and a spread angle adjustment unit that adjusts the spread angle of emitted light. The optical axis adjustment unit comprises an operation unit configured to be operable from a lateral-surface side of the head connector, and a movement unit that moves a fiber holder within a plane orthogonal to the optical axis of the emitted light in response to an operation of the operation unit. The spread angle adjustment unit comprises an operation unit provided to an insertion unit to be inserted into a laser head, and a movement unit that moves a lens in response to the operation of the operation unit.