Patent ID: 6595701
Filing Date: 2003-07-22
Classification: G02B

Abstract:
A laser diode module comprising:a laser diode having an end face from which a laser beam is emitted; a lens for condensing the laser beam from said laser diode at a focal point thereof, said lens having an input-side principal plane and an output-side principal plane; an optical fiber having an end face for receiving the laser beam condensed by said lens and delivering the received laser beam as an output of said module; and support means for supporting said laser diode, said lens and said optical fiber and securing an inlet distance between the end face of said laser diode and the input-side principal plane of said lens and an outlet distance between the output-side principal plane of said lens and the end face of said optical fiber, wherein said support means positions the end face of said optical fiber at a deviation position apart from the focal point of said lens by an allowable distance with respect to the output of said module when a temperature of said laser diode module is room temperature and moves the end face of said optical fiber at a close position relatively closer to the focal point than the deviation position when said temperature of said laser diode module rises from the room temperature.