Method for producing a light source having a diode laser and a plurality of optical fibers

US9153943B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Stoppel · Mundelsheim, DE
• Werner Herden · Gerlingen, DE
• Hans-Jochen Schwarz · Stuttgart, DE
• Andreas Letsch · Stuttgart, DE

Key dates

• Filing date: Feb 17, 2010
• Grant date: Oct 6, 2015
• Expiry date: Jan 11, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4031
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method is described for producing a light source, in particular a light source for optically exciting a laser device, for example a laser device of a laser ignition system of an internal combustion engine, including a diode laser having a plurality of emitters and a fiber optic device. The fiber optic device includes a plurality of optical fibers, each fiber having a first end and a lateral surface area. The first ends are situated relative to the emitters in such a way that light generated by the emitters is injected into the first ends of the optical fibers. The optical fibers are situated in abutment along their lateral surface areas, at least in the region of the first ends of the optical fibers. The method is characterized by the following steps: arranging a plurality of optical fibers which form a fiber section in a subregion, the fiber section being situated between two opposite pressing surfaces; heating the fiber section; and exerting a force on the heated optical fibers with the aid of the pressing surfaces. The force and the heating initially result in deformation of the heated optical fiber. The exerted force and/or a temperature of the optical fibers is/are selected …