Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7324424 | Compatible optical pickup having diffractive device to correct chromatism and divergent lens to increase working distance | Tae Kyung Kim, Young-man Ahn, Chong-sam Chung, Jin-Kyung Lee, Jong-bae Kim | 2008-01-29 |
| 7242659 | Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium | Chong-sam Chung, Young-man Ahn, Tae Kyung Kim | 2007-07-10 |
| 7180846 | Phase compensator and compatible optical pickup using the phase compensator | Tae Kyung Kim, Young-man Ahn, Jin-Kyung Lee, Jong-bae Kim, Chong-sam Chung | 2007-02-20 |
| 7131128 | Optical actuator | Seok-jung Kim, Kim Kwang, Chong-sam Chung, Sun-mo Kim, Jin Won Lee | 2006-10-31 |
| 7035186 | Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium | Chong-sam Chung, Young-man Ahn, Tae Kyung Kim | 2006-04-25 |
| 7020051 | Optical pickup capable of detecting and/or compensating for spherical aberration | Tae Kyung Kim, Young-man Ahn, Chong-sam Chung | 2006-03-28 |
| 6346367 | Optical disk and method for manufacturing the same | Young-man Ahn | 2002-02-12 |
| 6009071 | Optical disk having information pits with projections formed therein | Young-man Ahn | 1999-12-28 |