Patent ID: 7817700

Claim:
A manufacturing method for manufacturing a laser light source device, comprising: providing a first laser element that has a first emitter emitting light and a first formation face on which the first emitter is formed, a second laser element that has a second emitter emitting light and a second formation face on which the second emitter is formed, and a reflection member having at least one face that is a reflection face; disposing the first laser element and the second laser element so that the first formation face is opposed to the second formation face; disposing the reflection member in an optical path of the light emitted from the first laser element; adjusting a relative angle between the first formation face and the reflection face while causing the first laser element to emit the light and producing a laser oscillation between the first laser element and the reflection member; adjusting a relative angle of the second formation face relative to the first formation face by using the reflection member, while maintaining a positional relationship at which the laser oscillation is produced between the first laser element and the reflection member; and adjusting a relative rotation angle between the first laser element and the second laser element and a relative position between the first laser element and the second laser element, on a plane orthogonal to an optical path of the light emitted from the first laser element and on a plane orthogonal to an optical path of the light emitted from the second laser element, while producing laser oscillation by both the light emitted from the first laser element and the light emitted from the second laser element, so that the light emitted from the first emitter is incident into the second emitter and so that the light emitted from the second emitter is incident into the first emitter.