| 9146093 |
Non-harmonic cyclic error compensation in interferometric encoder systems |
— |
2015-09-29 |
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Cyclic error compensation in interferometric encoder systems |
— |
2014-12-16 |
| 7616322 |
Cyclic error compensation in interferometry systems |
Henry A. Hill, Alan H. Field |
2009-11-10 |
| 7576868 |
Cyclic error compensation in interferometry systems |
— |
2009-08-18 |
| 7542147 |
Data age compensation with avalanche photodiode |
— |
2009-06-02 |
| 7428685 |
Cyclic error compensation in interferometry systems |
Henry A. Hill |
2008-09-23 |
| 6975406 |
Glitch filter for distance measuring interferometry |
— |
2005-12-13 |
| 6597459 |
Data age adjustments |
— |
2003-07-22 |
| 6529279 |
Interferometer and method for measuring the refractive index and optical path length effects of air |
Peter De Groot, Henry A. Hill |
2003-03-04 |
| 6525826 |
Interferometer and method for measuring the refractive index and optical path length effects of air |
Peter De Groot, Henry A. Hill |
2003-02-25 |
| 6525825 |
Interferometer and method for measuring the refractive index and optical path length effects of air |
Peter De Groot, Henry A. Hill |
2003-02-25 |
| 6407816 |
Interferometer and method for measuring the refractive index and optical path length effects of air |
Peter De Groot, Henry A. Hill |
2002-06-18 |
| 6327039 |
Interferometer and method for measuring the refractive index and optical path length effects of air |
Peter De Groot, Henry A. Hill |
2001-12-04 |
| 6219144 |
Apparatus and method for measuring the refractive index and optical path length effects of air using multiple-pass interferometry |
Henry A. Hill, Peter De Groot |
2001-04-17 |
| 5767972 |
Method and apparatus for providing data age compensation in an interferometer |
— |
1998-06-16 |
| 4427296 |
Electro-optical measuring system |
Richard A. Iderosa |
1984-01-24 |
| 4332475 |
Edge timing in an optical measuring apparatus |
— |
1982-06-01 |