Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701288 | Optical pickup device with light spot size adjustment for different density disks | — | 1997-12-23 |
| 5699340 | Method for correcting aberration due to optical disk tilt and apparatus therefor | Chul-woo Lee, Kyung-hwa Rhim, Chong-sam Chung | 1997-12-16 |
| 5665957 | Lens device comprising light blocking means and an optical pickup apparatus using the lens device | Chul-woo Lee, Dong-Ho Shin, Kyung-hwa Rim, Chong-sam Chung, Kun-ho Cho +2 more | 1997-09-09 |
| 5594714 | Focus error detection with two symmetrically splitted reflected beams | Chul-woo Lee, Kyung-hwa Rim, Chong-sam Chung | 1997-01-14 |