Patent ID: 11962120
Assignee: FURUKAWA ELECTRIC CO., LTD.
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A semiconductor laser module comprising:
a mounted-base member having a mounted-base face;
a plurality of semiconductor laser elements installed on the mounted-base face of the mounted-base member;
a plurality of lenses that collimate laser light emitted from the plurality of semiconductor laser elements;
a condensing lens that condenses the laser light;
an optical fiber to which the condensed laser light is optically coupled; and
an aperture provided between the condensing lens that condenses the laser light and the plurality of lenses that collimate the laser light emitted from the plurality of semiconductor laser elements, and configured to restrict light in a slow axis direction of the laser light, wherein the aperture comprises a member defining a space through which the laser light passes, the space having a U-shape or a rectangular shape in a direction perpendicular to a traveling direction of the laser light such that the aperture causes the laser light guided to the condensing lens to have a constant width in the slow axis direction regardless of a position of the laser light in a fast axis direction.