Issued Patents All Time
Showing 126–149 of 149 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6091462 | Split-element liquid crystal tunable optical filter | Kristina M. Johnson | 2000-07-18 |
| 6078374 | Spatially switched achromatic compound retarder | Kristina M. Johnson | 2000-06-20 |
| 6049367 | Polarization manipulating device modulator with retarder stack which preconditions light for modulation and isotropic states | Kristina M. Johnson | 2000-04-11 |
| 6046786 | Switchable achromatic compound retarder | Kristina M. Johnson | 2000-04-04 |
| 5999240 | Optical retarder stack pair for transforming input light into polarization states having saturated color spectra | Kristina M. Johnson | 1999-12-07 |
| 5990996 | Color selective light modulators employing birefringent stacks | — | 1999-11-23 |
| 5953083 | Retarder stacks for polarizing a first color spectrum along a first axis and a second color spectrum along a second axis | — | 1999-09-14 |
| 5929946 | Retarder stack for preconditioning light for a modulator having modulation and isotropic states of polarization | Kristina M. Johnson | 1999-07-27 |
| 5892559 | Chromaticity compensating liquid crystal filter | — | 1999-04-06 |
| 5870159 | Switchable achromatic polarization rotator | — | 1999-02-09 |
| 5822021 | Color shutter liquid crystal display system | Kristina M. Johnson, Jack P. Salerno | 1998-10-13 |
| 5781268 | Polarization-insensitive fabry-perot tunable filter | Jian Liu, Charles Wong, Kristina M. Johnson | 1998-07-14 |
| 5751384 | Color polarizers for polarizing an additive color spectrum along a first axis and it's compliment along a second axis | — | 1998-05-12 |
| 5658490 | Liquid crystal achromatic compound retarder | Kristina M. Johnson | 1997-08-19 |
| 5627666 | Liquid crystal phase modulator using cholesteric circular polarizers | Jay Stockley, Kristina M. Johnson | 1997-05-06 |
| 5619355 | Liquid crystal handedness switch and color filter | Kristina M. Johnson | 1997-04-08 |
| 5574553 | Ladar receiver incorporating an optical amplifier and polarization optical mixer | Paul F. McManamon, Michael S. Salisbury, Steven A. Serati | 1996-11-12 |
| 5552912 | Chiral smectic liquid crystal optical modulators | Kristina M. Johnson | 1996-09-03 |
| 5528393 | Split-element liquid crystal tunable optical filter | Kristina M. Johnson | 1996-06-18 |
| 5493426 | Lateral electrode smectic liquid crystal devices | Kristina M. Johnson, Anat Sneh, Jian Liu | 1996-02-20 |
| 5381253 | Chiral smectic liquid crystal optical modulators having variable retardation | Kristina M. Johnson, Mark O. Freeman | 1995-01-10 |
| 5243455 | Chiral smectic liquid crystal polarization interference filters | Kristina M. Johnson | 1993-09-07 |
| 5231521 | Chiral smectic liquid crystal polarization interference filters | Kristina M. Johnson | 1993-07-27 |
| 5132826 | Ferroelectric liquid crystal tunable filters and color generation | Kristina M. Johnson | 1992-07-21 |