Patent Number: 7,101,094

Title: Laser apparatus having protection member at light-emission end of multimode optical fiber

Abstract: In a laser apparatus, a plurality of semiconductor laser elements respectively emit laser beams; a multimode optical fiber has a light-entrance end and a light-emission end; an optical condensing system collects the laser beams emitted from the plurality of semiconductor laser elements, and couples the collected laser beams to the light-entrance end of the multimode optical fiber; and a protection member is arranged at the light-emission end of the multimode optical fiber, protects the light-emission end from the atmosphere, and has a light-emission window located at at least a predetermined distance from the light-emission end.

Inventors: Nagano; Kazuhiko (Kaisei-machi, JP), Okazaki; Yoji (Kaisei-machi, JP), Kuramachi; Teruhiko (Kaisei-machi, JP), Yamanaka; Fusao (Kaisei-machi, JP)

Assignee: Fuji Photo Film Co., Ltd.

International Classification: G02B 6/36 (20060101)

Expiration Date: 9/05/02018