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Class Information
Number: 349/198
Name: Liquid crystal cells, elements and systems > Liquid crystal optical element > Liquid crystal etalon
Description: Subject matter wherein a liquid crystal material is sandwiched between two at least partially reflective surfaces which are parallel and opposite to each other and perpendicular to incoming light and wherein the liquid crystal state determines whether light constructively or destructively interferes.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7570675 |
Liquid crystal polymer optical filter carrier |
Aug. 4, 2009 |
| 7359028 |
Method of manufacturing liquid crystal display device |
Apr. 15, 2008 |
| 7280181 |
Liquid crystal polymer optical filter carrier |
Oct. 9, 2007 |
| 7259815 |
Two-way trans-reflective display |
Aug. 21, 2007 |
| 7221429 |
Wavelength locker with liquid crystal tunable filter generating transmitted and reflected outputs |
May. 22, 2007 |
| 7167230 |
Liquid crystal variable wavelength filter unit, and driving method thereof |
Jan. 23, 2007 |
| 7142280 |
Extended chiral defect structure apparatus and method |
Nov. 28, 2006 |
| 7002646 |
Tunable thin film optical devices and fabrication methods for tunable thin film optical devices |
Feb. 21, 2006 |
| 6954253 |
Optical multiplexer and cross-switch using etched liquid crystal fabry-perot etalons |
Oct. 11, 2005 |
| 6888661 |
Square filter function tunable optical devices |
May. 3, 2005 |
| 6856443 |
Method for using length dispersion in an etalon to approximate target resonant frequencies |
Feb. 15, 2005 |
| 6842217 |
Fabry-perot etalons and tunable filters made using liquid crystal devices as tuning material |
Jan. 11, 2005 |
| 6816636 |
Tunable optical filter |
Nov. 9, 2004 |
| 6812993 |
Optical multiplexer and cross-switch using etched liquid crystal fabry-perot etalons having enhanced spectral resolution and transmission characteristic |
Nov. 2, 2004 |
| 6791757 |
Optical device for filtering and sensing |
Sep. 14, 2004 |
| 6778251 |
Liquid crystal optical processing systems |
Aug. 17, 2004 |
| 6757046 |
Optical multiplexer and cross-switch using etched liquid crystal Fabry-Perot etalons |
Jun. 29, 2004 |
| 6707518 |
Electro-optic device allowing wavelength tuning |
Mar. 16, 2004 |
| 6639648 |
Optical wavelength tuning method and Fabry-Perot type optical tuner |
Oct. 28, 2003 |
| 6621614 |
Etalons with variable reflectivity |
Sep. 16, 2003 |
| 6545739 |
Tunable wavelength filter using nano-sized droplets of liquid crystal dispersed in a polymer |
Apr. 8, 2003 |
| 6522467 |
Polarization insensitive liquid crystal tunable filter |
Feb. 18, 2003 |
| 6500521 |
Stepped etalon |
Dec. 31, 2002 |
| 6271899 |
Tunable nano-phase polymer dispersed liquid crystal filter |
Aug. 7, 2001 |
| 6154591 |
Tunable optical device |
Nov. 28, 2000 |
| 6144427 |
Polymer dispersed liquid crystal panel |
Nov. 7, 2000 |
| 6141069 |
Liquid crystal phase modulator using a ferroelectric liquid crystal with a rotatable axis and cholesteric circular polarizers |
Oct. 31, 2000 |
| 5781268 |
Polarization-insensitive fabry-perot tunable filter |
Jul. 14, 1998 |
| 5719654 |
Liquid crystal fabry perot filter device having a peak operating wavelength of 10.6 microns |
Feb. 17, 1998 |
| 5620781 |
Erasable display medium |
Apr. 15, 1997 |
| 5381253 |
Chiral smectic liquid crystal optical modulators having variable retardation |
Jan. 10, 1995 |
| 5377026 |
Modulator using the linear electro-optic effect of liquid crystals |
Dec. 27, 1994 |
| 5321539 |
Liquid crystal Fabry-Perot etalon with glass spacer |
Jun. 14, 1994 |
| 5172257 |
Twisted ferroelectric liquid crystal modulator for providing gray scale |
Dec. 15, 1992 |
| 5168383 |
Liquid crystal device with Fabry-Perot etalon |
Dec. 1, 1992 |
| 5150236 |
Tunable liquid crystal etalon filter |
Sep. 22, 1992 |
| 5113275 |
Temperature compensation of liquid-crystal etalon filters |
May. 12, 1992 |
| 5111321 |
Dual-polarization liquid-crystal etalon filter |
May. 5, 1992 |
| 5068749 |
Electronically tunable polarization-independent liquid crystal optical filter |
Nov. 26, 1991 |
| 4917476 |
Thermal imagers using liquid crystal sensing elements |
Apr. 17, 1990 |
| 4790634 |
Bistable liquid crystal in a fabry-perot etalon |
Dec. 13, 1988 |
| 4779959 |
Liquid crystal electro-optic modulator in a fabry-perot interferometer |
Oct. 25, 1988 |
| 4595292 |
Apparatus for detecting coherent radiation and unequal path interferometers |
Jun. 17, 1986 |
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