Issued Patents All Time
Showing 101–125 of 126 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011624 | Geometrically-Desensitized interferometer with adjustable range of measurement depths | — | 2000-01-04 |
| 5999263 | Method and apparatus for performing interferometric measurements with reduced sensitivity to vibration | Leslie L. Deck | 1999-12-07 |
| 5995224 | Full-field geometrically-desensitized interferometer employing diffractive and conventional optics | — | 1999-11-30 |
| 5953125 | Optical gap measuring apparatus and method | — | 1999-09-14 |
| 5838485 | Superheterodyne interferometer and method for compensating the refractive index of air using electronic frequency multiplication | Henry A. Hill | 1998-11-17 |
| 5831733 | Apparatus and methods for measuring gaps while compensating for birefringence effects in the measurement path | — | 1998-11-03 |
| 5751427 | Optical gap measuring apparatus and method | — | 1998-05-12 |
| 5724134 | Calibration standard for optical gap measuring tools | James F. Biegen, Leslie L. Deck, Robert A. Smythe | 1998-03-03 |
| 5671050 | Method and apparatus for profiling surfaces using diffracative optics | — | 1997-09-23 |
| 5663793 | Homodyne interferometric receiver and calibration method having improved accuracy and functionality | — | 1997-09-02 |
| 5644562 | Method and apparatus for measuring and compensating birefringence in rotating disks | — | 1997-07-01 |
| 5600441 | Interferometer and method for measuring the distance of an object surface with respect to the surface of a rotating disk | Leslie L. Deck | 1997-02-04 |
| 5598265 | Method for profiling an object surface using a large equivalent wavelength and system therefor | — | 1997-01-28 |
| 5594543 | Laser diode radar with extended range | Gregg M. Gallatin, Chandra Roychoudhuri | 1997-01-14 |
| 5557399 | Optical gap measuring apparatus and method | — | 1996-09-17 |
| 5526116 | Method and apparatus for profiling surfaces using diffractive optics which impinges the beams at two different incident angles | — | 1996-06-11 |
| 5493394 | Method and apparatus for use in measuring frequency difference between light signals | John A. McGarvey | 1996-02-20 |
| 5488477 | Methods and apparatus for profiling surfaces of transparent objects | — | 1996-01-30 |
| 5473434 | Phase shifting interferometer and method for surface topography measurement | — | 1995-12-05 |
| 5404221 | Extended-range two-color interferometer | — | 1995-04-04 |
| 5398113 | Method and apparatus for surface topography measurement by spatial-frequency analysis of interferograms | — | 1995-03-14 |
| 5371587 | Chirped synthetic wavelength laser radar | John A. McGarvey | 1994-12-06 |
| 5135307 | Laser diode interferometer | Gregg M. Gallatin, George J. Gardopee | 1992-08-04 |
| 5081710 | Laser transmitter | Francis X. D'Amato, deceased, Kotik K. Lee | 1992-01-14 |
| 5020901 | Multimode laser diode system for range measurement | — | 1991-06-04 |