| 6097689 |
Optical pickup system incorporated therein a polarizing film and a pair of 1/4 wavelength plates |
— |
2000-08-01 |
| 6021105 |
Knife edge method for use in an optical pickup system |
— |
2000-02-01 |
| 5995473 |
Optical pickup system capable of selectively reading a multiple number of optical disks |
— |
1999-11-30 |
| 5953294 |
Optical pickup apparatus |
— |
1999-09-14 |
| 5939710 |
Optical pickup system incorporating therein a beam splitter having a phase layer |
— |
1999-08-17 |
| 5940360 |
Optical pickup device for reproducing discs of two types with different densities by double beam focuses of different sizes |
— |
1999-08-17 |
| 5917800 |
Optical pickup device for reproducing discs of two types with different densities by double beam focuses of different sizes |
— |
1999-06-29 |
| 5905254 |
Compact sized optical pickup system |
— |
1999-05-18 |
| 5901132 |
Pickup head having two laser light sources for separately reading an optical disk with two recording layers |
— |
1999-05-04 |
| 5883874 |
Optical pickup system for selectively reading a multiple number of optical disks |
— |
1999-03-16 |
| 5809000 |
Optical pickup system for reading optical disks of different thicknesses |
— |
1998-09-15 |
| 5787058 |
Optical pickup apparatus utilizing a polygonal prism |
— |
1998-07-28 |
| 5787066 |
Both-sided optical disc player capable of transferring a both-sided disc up and down about an optical pickup |
— |
1998-07-28 |
| 5777971 |
Optical head with a micro fresnel lens integrated on a beam splitter |
— |
1998-07-07 |
| 5768244 |
Optical pickup system having an integrated twin focusing beam splitter |
— |
1998-06-16 |
| 5764621 |
Optical disc with a plurality of recording layers |
— |
1998-06-09 |
| 5708641 |
Multiple focus optical pickup system |
Ki Tae Kim |
1998-01-13 |
| 5708643 |
Multiple focus optical pickup system for alternatively reading a multiple number of optical disks |
Ki Tae Kim |
1998-01-13 |
| 5671206 |
Optical pickup device |
— |
1997-09-23 |
| 5646929 |
Optical pickup device |
— |
1997-07-08 |
| 5636190 |
Optical pickup system for use with an optical disk having multiple reflection hologram film |
— |
1997-06-03 |