LASER DIODE MODULE AND MOUNTING SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a small-sized laser diode module which can efficiently radiate heat from a laser diode and consumes small power. SOLUTION: The external surface 15 of a bottom plate 2 of a package 7 is formed as a mounting surface of a printed board 20, a base 6 is fixed to the inner wall face 9 side of an upper plate 8 of the package 7, and the laser diode 3 is fixed to the base 6. A heat radiation means 4 is provided on the external surface 16 side of the upper plate 8 of the package 7. The heat radiation means 4 comprises a plurality of radiation fins 5 disposed at regular intervals. Heat can be efficiently radiated by radiating heat from the laser diode 3 through the base 6, upper plate 8, and heat radiation means 4.