| Original language | English |
|---|---|
| Patent number | US6907182 B2 |
| IPC | G02B6/00, G02B6/42 |
| Priority date | 23/11/01 |
| Publication status | Published - 14 Jun 2005 |
| Externally published | Yes |
| Publication type | H1 Granted patent |
| Original language | English |
|---|---|
| Patent number | US6907182 B2 |
| IPC | G02B6/00, G02B6/42 |
| Priority date | 23/11/01 |
| Publication status | Published - 14 Jun 2005 |
| Externally published | Yes |
| Publication type | H1 Granted patent |