| Patent Number |
Title Of Patent |
Date Issued |
| 7136409 |
Semiconductor laser device and optical pickup device |
November 14, 2006 |
| In this semiconductor laser device, a polarization hologram transmits an outgoing beam directed from a semiconductor laser chip to an optical disk as a forward beam without diffracting the beam, and diffracts a backward beam of the laser beam, which is a return beam of the forward beam t |
| 7106682 |
Optical pickup |
September 12, 2006 |
| An optical pickup can be provided, the optical pickup being capable of recording and playback of a plurality of optical disks having different specs by using light beams of different wavelengths, and further being suitable for integrating the semiconductor lasers and light receiving |
| 6983005 |
Holographic laser and optical pickup |
January 3, 2006 |
| It is an object of the invention to provide a holographic laser and an optical pickup, with which it is possible to read from and write to a plurality of types of optical disks with different read wavelengths, and to achieve a more compact apparatus. The holographic laser includes for |
| 6868055 |
Optical pickup |
March 15, 2005 |
| An optical pickup can be provided, the optical pickup being capable of recording and playback of a plurality of optical disks having different specs by using light beams of different wavelengths, and further being suitable for integrating the semiconductor lasers and light receiving |
| 6847665 |
Semiconductor laser device and method for producing the same |
January 25, 2005 |
| Not only a semiconductor laser element and a photodetector but also a capacitor connected to the photodetector is housed in a package to thereby reduce the distance from the capacitor to the photodetector so that power source noise is efficiently suppressed by the capacitor and a power s |
| 5557116 |
Semiconductor laser device and resin layer |
September 17, 1996 |
| A semiconductor laser device includes a base, a semiconductor laser chip and a resin layer enclosing the laser chip. The base may have a monitor photodiode mounted thereon in the vicinity of the laser chip. The resin layer enclosing the laser chip or both of the laser chip and the monito |
