Patent ID: 7525895
Filing Date: 2009-04-28
Classification: G11B

Abstract:
1. An integrated semiconductor device having a semiconductor substrate and one or more predetermined optical elements each of which includes a semiconductor laser disposed on the semiconductor substrate, and a laser beam emitted from the semiconductor laser is converged upon a record surface of a disk-shaped recording medium by an objective lens, said device comprising: a prism adhered to the semiconductor substrate, and having a light reflection surface formed with a light reflection film for reflecting a laser beam emitted from a semiconductor laser and a light transmission surface formed approximately perpendicular to an optical axis of the laser beam emitted from the semiconductor laser for transmitting a laser beam emitted from the semiconductor laser outside an aperture range of the objective lens; a monitor photoreceptor disposed in an area of the semiconductor substrate where the prism is disposed, and receiving the laser beam transmitted through the light transmission surface of the prism; and a signal detection photoreceptor disposed outside the area of the semiconductor substrate where the prism is disposed, for receiving, as return light, a laser beam reflected at the light reflection surface of the prism and converged upon the record surface of the disk-shaped recording medium via the objective lens.