Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155544 | Foucault method for testing an optical surface | Donald E. Vandenberg, Thomas W. Dey, William D. Humbel | 1992-10-13 |
| 5020905 | Application of the Foucault knife-edge test to a segmented optic | Thomas W. Dey, Edward M. Granger, Donald E. Vandenberg, William D. Humbel | 1991-06-04 |
| 4993831 | Closed loop Foucault knife-edge test | Donald E. Vandenberg, William D. Humbel, Thomas W. Dey | 1991-02-19 |
| 4979819 | Foucault knife-edge test for quantitatively determining a wavefront aberration over the entire surface of an optical imaging device | William D. Humbel, Donald E. Vandenberg, Thomas W. Dey | 1990-12-25 |
| 4969737 | Expanded foucault knife-edge test for quantitatively testing an optical imaging device | William D. Humbel, Donald E. Vandenberg, Thomas W. Dey | 1990-11-13 |