Patent ID: 9297945
Filing Date: 2016-03-29
CPC Classification: G02B

Claim Text:
1. A light source device comprising: a plurality of first optical devices which generate red laser light; a plurality of first optical fibers through each of which the red laser light from a corresponding one of the plurality of first optical devices is guided; a plurality of second optical devices which generate green laser light; a plurality of second optical fibers through each of which the green laser light from a corresponding one of the plurality of second optical devices is guided; a plurality of third optical devices which generate blue laser light; a plurality of third optical fibers through each of which the blue laser light from a corresponding one of the plurality of third optical devices is guided; and a fiber bundle combiner which forms a fiber bundle by fixedly holding together end portions of the plurality of first optical fibers, the plurality of second optical fibers, and the plurality of third optical fibers in such a manner that a plurality of optical fiber sets, each comprising three optical fibers one from the plurality of first optical fibers, one from the plurality of second optical fibers, and one from the plurality of third optical fibers, are stacked in layers, wherein the plurality of first optical fibers, the plurality of second optical fibers, and the plurality of third optical fibers emit laser lights from exit end faces thereof so that the laser lights from different ones of the plurality of optical fiber sets are focused at different depth positions, and a GI fiber whose length is different for each of the optical fiber sets is fused to the end portion of each of the plurality of first optical fibers, the plurality of second optical fibers, and the plurality of third optical fibers.