Semiconductor laser device
First Claim
Patent Images
1. A semiconductor laser device comprising:
- a laser diode chip having two terminals;
a photo diode having two terminals;
a metallic main plate mounting said laser diode chip and said photo diode, said main plate being an electric common electrode plate for a first terminal of said laser diode chip and a first terminal of said photo diode, and having at least a fixing end portion;
first, second and third metallic posts electrically respectively connected to said main plate, a second terminal of said laser diode chip and a second terminal of said photo diode, respectively, wherein said first, second and third posts being spaced apart from said main plate; and
a resin case in which said laser diode chip and said photo diode and the space between said main plate and said posts are sealed.
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Accused Products
Abstract
A semiconductor laser device is provided which includes: a metallic main plate to which a laser diode chip is fixed through a sub-mount incorporating a photo diode and which serves as an electric common for these diodes; three metallic posts that are electrically connected by wires to the main plate, laser diode chip and photo diode, respectively, and are spaced apart from the main plate; and a resin case in which the laser diode chip and sub-mount are sealed and to which fixing end portions of the main plate are fixed. The resin case secures the main plate and the three posts in position such a way as to avoid direct contact therebetween.
36 Citations
5 Claims
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1. A semiconductor laser device comprising:
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a laser diode chip having two terminals; a photo diode having two terminals; a metallic main plate mounting said laser diode chip and said photo diode, said main plate being an electric common electrode plate for a first terminal of said laser diode chip and a first terminal of said photo diode, and having at least a fixing end portion; first, second and third metallic posts electrically respectively connected to said main plate, a second terminal of said laser diode chip and a second terminal of said photo diode, respectively, wherein said first, second and third posts being spaced apart from said main plate; and a resin case in which said laser diode chip and said photo diode and the space between said main plate and said posts are sealed. - View Dependent Claims (2, 3, 4, 5)
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Specification