Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339741 | Multi-color wide angle infrared optical systems and methods | Yaujen Wang | 2008-03-04 |
| 5862726 | Method for the manufacture of a three-mirror optical system | Kenneth G. Preston | 1999-01-26 |
| 5414555 | Method for the manufacture of a three-mirror optical system and the optical system resulting therefrom | Kenneth G. Preston | 1995-05-09 |
| 4888759 | Laser optical memory system having beam combining and separating apparatus for combining and separating reading and writing laser beams | Robert L. Hazel | 1989-12-19 |
| 4622659 | Focus detection and control apparatus for maintaining accurate focusing in an optical memory system by detecting reflected beam diameter variations at spaced predetermined locations | Robert L. Hazel | 1986-11-11 |
| 4621353 | Optical memory system providing improved focusing control and improved beam combining and separating apparatus | Robert L. Hazel | 1986-11-04 |
| 4562568 | Beam combining and separating apparatus useful for combining and separating reading and writing laser beams in an optical storage system | Robert L. Hazel | 1985-12-31 |
| 4559622 | Optical memory system providing improved focus detection and control by detecting reflected beam diameter variations at spaced predetermined locations in the system | Robert L. Hazel | 1985-12-17 |