Patent ID: 7876804

Claim:
A laser oscillator comprising: an oscillator housing; a pair of optical bases including a first optical base on which a high-reflection mirror is arranged and a second optical base on which a partial-reflection mirror is arranged, the optical bases being arranged on both sides of the oscillator housing, respectively, and mutually connected in parallel to each other by three supporting rods extending along an optical axis of an optical resonator composed of the high-reflection mirror and the partial-reflection mirror; a pair of bellows that connect gaps between the optical bases and the oscillator housing; a leaf spring that maintains the optical bases hanging from the oscillator housing; a guide light source that emits a guide light for aligning optical components in an optical path from the partial reflecting mirror from which a laser light is emitted to a processing head that illuminates a target object with the laser light and adjusting a processing point on the target object; and an optical-component supporting unit that includes optical components that guide the laser light in a direction perpendicular to the optical axis, wherein the guide light source is arranged on the second optical base.