Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675401 | Illuminating arrangement including a zoom objective incorporating two axicons | Gerald Richter | 1997-10-07 |
| 5646715 | Illuminating arrangement for an optical system having a reticle masking unit | — | 1997-07-08 |