Patent ID: 9502850
Filing Date: 2016-11-22
CPC Classification: H01S

Claim Text:
1. A gas laser device for generating laser light by exciting a laser gas, comprising a housing for enclosing the laser gas, wherein the housing includes a main body having a length, which extends along an optical axis of the laser light, and a frame-like structure with openings formed on both sides thereof, the openings extending along a length of an optical axis of the laser light, and a pair of detachable cover members attached to cover each of the openings, the main body is provided with a pair of first frame members each extending along the optical axis of the laser light, and a pair of second frame members respectively connecting both ends of the first frame members, each of the cover members includes a partially cylindrical member having two opposing ends and an arc-like cross-sectional shape in a plane perpendicular to the optical axis, and each cover member extending along the optical axis, and a pair of side wall members occluding both ends of the partially cylindrical member, each side wall member has a curved portion that curves from one of the opposing ends of the partially cylindrical member to an end of the detachable cover member along a portion of the length of the main body, and the partially cylindrical member has a bellows portion molded into a shape having peaks and valleys each alternating along the optical axis.