Issued Patents All Time
Showing 76–100 of 126 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012700 | Interferometric optical systems having simultaneously scanned optical path length and focus | Xavier Colonna De Lega, Senthil Balasubramaniam | 2006-03-14 |
| 6989905 | Phase gap analysis for scanning interferometry | — | 2006-01-24 |
| 6909509 | Optical surface profiling systems | — | 2005-06-21 |
| 6836335 | Multi-axis interferometer | Henry A. Hill, Andrew Eric Carlson | 2004-12-28 |
| 6822745 | Optical systems for measuring form and geometric dimensions of precision engineered parts | Xavier Colonna De Lega, David Grigg, James F. Biegen | 2004-11-23 |
| 6778280 | Interferometry system and method employing an angular difference in propagation between orthogonally polarized input beam components | Henry A. Hill | 2004-08-17 |
| 6744522 | Interferometer for measuring the thickness profile of thin transparent substrates | Leslie L. Deck | 2004-06-01 |
| 6714307 | Measurement of complex surface shapes using a spherical wavefront | Xavier Colonna De Lega | 2004-03-30 |
| 6631004 | Single-pass and multi-pass interferometry systems having a dynamic beam-steering assembly for measuring distance, angle, and dispersion | Henry A. Hill | 2003-10-07 |
| 6529279 | Interferometer and method for measuring the refractive index and optical path length effects of air | Henry A. Hill, Frank C. Demarest | 2003-03-04 |
| 6525826 | Interferometer and method for measuring the refractive index and optical path length effects of air | Henry A. Hill, Frank C. Demarest | 2003-02-25 |
| 6525825 | Interferometer and method for measuring the refractive index and optical path length effects of air | Henry A. Hill, Frank C. Demarest | 2003-02-25 |
| 6452682 | Apparatus to transform two nonparallel propagating optical beam components into two orthogonally polarized beam | Henry A. Hill | 2002-09-17 |
| 6417927 | Method and apparatus for accurately compensating both long and short term fluctuations in the refractive index of air in an interferometer | — | 2002-07-09 |
| 6407816 | Interferometer and method for measuring the refractive index and optical path length effects of air | Henry A. Hill, Frank C. Demarest | 2002-06-18 |
| 6327039 | Interferometer and method for measuring the refractive index and optical path length effects of air | Henry A. Hill, Frank C. Demarest | 2001-12-04 |
| 6313918 | Single-pass and multi-pass interferometery systems having a dynamic beam-steering assembly for measuring distance, angle, and dispersion | Henry A. Hill | 2001-11-06 |
| 6252667 | Interferometer having a dynamic beam steering assembly | Henry A. Hill | 2001-06-26 |
| 6249351 | Grazing incidence interferometer and method | — | 2001-06-19 |
| 6236507 | Apparatus to transform two nonparallel propagating optical beam components into two orthogonally polarized beam components | Henry A. Hill | 2001-05-22 |
| 6219144 | Apparatus and method for measuring the refractive index and optical path length effects of air using multiple-pass interferometry | Henry A. Hill, Frank C. Demarest | 2001-04-17 |
| 6208424 | Interferometric apparatus and method for measuring motion along multiple axes | — | 2001-03-27 |
| 6201609 | Interferometers utilizing polarization preserving optical systems | Henry A. Hill | 2001-03-13 |
| 6195168 | Infrared scanning interferometry apparatus and method | Xavier Colonna De Lega, Leslie L. Deck | 2001-02-27 |
| 6163379 | Interferometer with tilted waveplates for reducing ghost reflections | — | 2000-12-19 |