LIGHT GUIDING DEVICE, LASER MODULE, AND METHOD FOR MANUFACTURING LIGHT GUIDING DEVICE

The present invention provides a laser module (1, 1A, 1B) that allows a decrease in efficiency of coupling between a group of laser diodes (LD) and an optical fiber (OF), which decrease may be caused in a case where a resin (R1, R2) for fixing collimating lenses (C1 through Cn) has expanded, to be reduced as compared with a conventional laser module. A traveling direction of each laser beam constituting a second beam bundle at a portion where the second beam bundle has not been converged by a converging lens (L) is offset from a reference direction so as to compensate for a change in the traveling direction caused by water absorption and expansion of the resin (R1, R2) used for fixing a corresponding collimating lens (Ci).