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US 4,736,231 AGranted
Semiconductor laser device having a semiconductor substrate, a laser chip thereon and spaced photo-detecting portions
AssigneeSony Corporation
InventorsMasaaki Ayabe, Sumio Santa, Osamu Matsuda
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Abstract
A semiconductor laser device is disclosed herein in which a semiconductor laser chip is mounted on a surface of a semiconductor substrate at one region and a plurality of photo-detecting portions for receiving laser light emitted from the semiconductor laser chip are provided on the surface of the semiconductor substrate at another region separated from the semiconductor laser chip.
Claims12
A semiconductor laser device comprising:
- a semiconductor substrate;
- a semiconductor laser chip mounted on a surface of said semiconductor substrate at one region;
- and
- a plurality of photo-detecting portions for receiving laser light emitted from said semiconductor laser chip provided on the surface of said semiconductor substrate at another region separated from said semiconductor laser chip;
- said plurality of photo-detecting portions including first and second photo-detecting portions, each provided in regions divided by a predetermined line extending from said laser chip for receiving laser light from said laser chip.
2 more elements
A semiconductor laser device comprising:
- a semiconductor substrate:
- a semiconductor laser chip mounted on a surface of said semiconductor substrate at one region;
- and
- a plurality of photo-detecting portions for receiving laser light emitted from said semiconductor laser chip provided on the surface of said semiconductor substrate at another region separated from said semiconductor laser chip;
- wherein said device is elongated, said region at which said chip is mounted is adjacent one end of said device and said region at which said photo-detecting portions are provided is at the other end of said device;
- and
- wherein said photo-detecting portions include a central, a left and a right photo-detector portion, and photo-detecting portions are symmetrical about a first longitudinal central line extending through said central photo-detecting portion.
4 more elements
A semiconductor laser device comprising:
- a semiconductor substrate;
- a semiconductor laser chip mounted on a surface of said semiconductor substrate at one region;
- and
- a plurality of photo-detecting portions for receiving laser light emitted from said semiconductor laser chip provided on the surface of said semiconductor substrate at another region separated from said semiconductor laser chip;
- wherein said device is elongated, said region at which said chip is mounted is adjacent one end of said device and said region at which said photo-detecting portions are provided is at the other end of said device, said device further includes left and right photo-detecting portions of the same size and shape, which are laterally spaced from each other and which are symmetric about a first longitudinal central line extending between said left and right portions in the space therebetween.
2 more elements
A semiconductor laser device comprising:
- a semiconductor substrate;
- a semiconductor laser chip mounted on a surface of said semiconductor substrate at one region;
- and
- a plurality of photo-detecting portions for receiving laser light emitted from said semiconductor laser chip provided on the surface of said semiconductor substrate at another region separated from said semiconductor laser chip;
- wherein said device is elongated, said region at which said chip is mounted is adjacent one end of said device and said region at which said photo-detecting portions are provided is at the other end of said device;
- and
- wherein said photo-detecting portions include a pair of rectangularly shaped photo-detecting portions, each laterally arranged on said substrate with one photo-detecting portion adjacent the end of said substrate, the other photo-detecting portion intermediate the chip and said one photo-detecting portion and said photo-detecting portions being longitudinally spaced from each other.
4 more elements
Dependencies are inferred from the claim text.