| Patents for G02F 1 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics (257,845) |
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| 02/20/1991 | CN2071793U Photoelectric coupler by use of liquid crystal to adjuste light |
| 02/20/1991 | CN1049434A Double active-fiber optical amplifier having wide-band signal wavelength |
| 02/19/1991 | US4994796 Electro optical display device with redundant switching means |
| 02/19/1991 | US4994672 Exhibits change in refractive index in responses to changes in its temperature |
| 02/19/1991 | US4994209 Nonlinear optical material |
| 02/19/1991 | US4994204 Light modulating materials comprising a liquid crystal phase dispersed in a birefringent polymeric phase |
| 02/19/1991 | US4993813 Optical amplifier |
| 02/19/1991 | US4993811 Ridge array light valve device |
| 02/19/1991 | US4993810 Electrochromic devices comprising metal salts in an ion conductive material |
| 02/19/1991 | US4993798 Laser arrangement in optical communication system |
| 02/19/1991 | US4993797 Optical fibre lattice signal processors |
| 02/19/1991 | CA1280305C Devices having low loss optical waveguides |
| 02/14/1991 | DE3926691A1 Nlo-aktive polyimide Nlo-active polyimide |
| 02/13/1991 | EP0412921A2 Thin film transistor liquid crystal display device with optical interference color filters |
| 02/13/1991 | EP0412844A1 Liquid crystal display |
| 02/13/1991 | EP0412843A2 Liquid crystal display device of optical writing type |
| 02/13/1991 | EP0412831A1 An active matrix board |
| 02/13/1991 | EP0412757A2 Display device |
| 02/13/1991 | EP0412727A2 Optical communication system |
| 02/13/1991 | EP0412717A2 Optical repeated transmission system |
| 02/13/1991 | EP0412701A2 Thin film transistor and preparation thereof |
| 02/13/1991 | EP0412497A2 Liquid crystal display device substantially free from cross-talk |
| 02/13/1991 | EP0412485A2 Polymeric liquid-crystal composition and polymeric liquid-crystal device |
| 02/13/1991 | EP0412408A2 Electrically conductive polymer and its use as orientation layer in liquid crystal switches and display devices |
| 02/12/1991 | US4993034 Ion exchanging laser glass with group 1a oxide |
| 02/12/1991 | US4992916 Prismatic illuminator for flat panel display |
| 02/12/1991 | US4992858 Laser beam scanning apparatus |
| 02/12/1991 | US4992824 Apparatus and method utilizing an LCD for printing |
| 02/12/1991 | US4992803 Simultaneous laser writing of multiple LALC cells |
| 02/12/1991 | US4992654 Bistable |
| 02/12/1991 | US4992559 Polymerizable thiophene monomers |
| 02/12/1991 | US4992214 Crystalline; with intermolecular hydrogen bonding |
| 02/12/1991 | US4992203 Non-linear optics |
| 02/12/1991 | US4992202 Non-linear optics |
| 02/12/1991 | US4992201 Nematic curvilinearly aligned phase; emulsification of liquid crystals in suspension of latex |
| 02/12/1991 | US4991941 A field sequential |
| 02/12/1991 | US4991940 Gain reflector-liquid crystal display |
| 02/12/1991 | US4991939 Liquid crystal display device |
| 02/12/1991 | US4991938 Quasi-achromatic optical isolators and circulators using prisms with total internal fresnel reflection |
| 02/12/1991 | US4991936 Repeating mosaic pattern of colorants in cross-linked polymeric binder; heat or light exposure |
| 02/12/1991 | US4991931 Method of driving optical wavelength converter module |
| 02/12/1991 | US4991924 Optical switches using cholesteric or chiral nematic liquid crystals and method of using same |
| 02/12/1991 | US4991923 Acousto-optic modulator for optical fibers using Hertzian contact with a grooved transducer substrate |
| 02/12/1991 | US4991921 Pn junction optical modulating device having a buffer layer with small energy gap |
| 02/12/1991 | CA1280239C Vinylidene fluoride polymeric compositions of non-linear optical properties |
| 02/12/1991 | CA1280195C Liquid crystal display |
| 02/12/1991 | CA1280110C LIQUID CRYSTALLINE FERROELECTRIC DERIVATIVES OF BRANCHED ACYCLIC .alpha.-CHLOROCARBOXYLIC ACIDS |
| 02/12/1991 | CA1279990C Display device having different alignment layers |
| 02/07/1991 | WO1991001566A1 Thick-film integrated flat fluorescent lamp |
| 02/07/1991 | WO1991001511A1 Reverse mode microdroplet liquid crystal light shutter displays |
| 02/07/1991 | DE4030240A1 Repetitively Q=switched surgical laser - having solid-state laser module and supplementary frequency-doubling module |
| 02/07/1991 | DE4023981A1 LCD reproduces at least nine colours - uses analogue input, X-Y axis drivers and serial-parallel converter with cyclic data extraction |
| 02/06/1991 | EP0411975A1 Electro-optic deflector using liquid crystal |
| 02/06/1991 | EP0411942A2 Parametric pulsed laser system |
| 02/06/1991 | EP0411933A2 An active matrix display apparatus |
| 02/06/1991 | EP0411928A2 Display system |
| 02/06/1991 | EP0411726A2 A method of manufacturing flat panel display backplanes |
| 02/06/1991 | EP0411511A2 Supertwisted nematic liquid crystal display device |
| 02/06/1991 | EP0411325A2 Apparatus and method utilizing LCD for printing |
| 02/06/1991 | EP0411141A1 Light shutter array element, driving method thereof, plzt for light shutter array element, and method of preventing variance in the transmission light intensity using said plzt |
| 02/06/1991 | EP0411131A1 Wavelength stabilized source of light |
| 02/06/1991 | EP0411122A1 Ferroelectric liquid crystal composition |
| 02/06/1991 | EP0411103A1 Non-linear optical materials with vicinal donor or acceptor groups |
| 02/06/1991 | EP0411029A1 Electrochromic device and a method to manufacture the same. |
| 02/06/1991 | EP0221112B1 Ferroelectric liquid crystal devices |
| 02/05/1991 | USH884 Method and apparatus for increasing the angular aperture of an acousto-optic device |
| 02/05/1991 | US4991177 Laser beam clean-up using mutually pumped phase conjugation |
| 02/05/1991 | US4990981 Thin film transistor and a liquid crystal display device using same |
| 02/05/1991 | US4990943 Heat dissipation |
| 02/05/1991 | US4990905 Electro-optical |
| 02/05/1991 | US4990761 Plural arc radiation protector |
| 02/05/1991 | US4990480 Dispersing source of boria, alumina, rare earth oxides, drying, calcining; used as catalysts, laser materials |
| 02/05/1991 | US4990460 Fabrication method for thin film field effect transistor array suitable for liquid crystal display |
| 02/05/1991 | US4990287 (Naphtho or benzo)pyran compound |
| 02/05/1991 | US4990286 Zinc oxyfluoride transparent conductor |
| 02/05/1991 | US4989958 Focus adjusting apparatus provided with a focus lens member formed of polymer gel substance having electro-reactive deformability |
| 02/05/1991 | US4989956 Visual display device with fluorescent dye-doped edge-illuminating emitter panel |
| 02/05/1991 | US4989955 Liquid crystal electro-optical element and process for preparation thereof |
| 02/05/1991 | US4989954 Projection type liquid cyrstal display device |
| 02/05/1991 | US4989941 Normal incidence optical switches using ferroelectric liquid crystals |
| 02/05/1991 | US4989933 Guided light diffuser |
| 02/05/1991 | CA1279918C2 Ferroelectric liquid crystal device |
| 02/04/1991 | CA2022335A1 Electrically tunable interference filters and methods for their use |
| 02/01/1991 | WO1991002276A1 Fibre modulators |
| 02/01/1991 | CA2064562A1 Fibre modulators |
| 01/31/1991 | DE4022866A1 Gradations of pixel brightness in liquid crystal matrix display - can be easily produced by dividing timing period into 3 unequal sub-periods and biassing pixel for combination |
| 01/30/1991 | EP0410949A2 Liquid crystal display |
| 01/30/1991 | EP0410531A1 Semiconductor system comprising a directional coupler for the TE and TM component |
| 01/30/1991 | EP0410447A2 Liquid crystalline compounds, liquid crystal compositions containing the same and use thereof |
| 01/30/1991 | EP0410387A2 Liquid crystal display device and method of manufacturing the same |
| 01/30/1991 | EP0410205A2 Anisotropic liquid crystal polymeric films |
| 01/30/1991 | EP0409975A1 Liquid crystal devices using a linear electro-optic effect. |
| 01/30/1991 | EP0409968A1 Write with light optical notching filter |
| 01/30/1991 | EP0409958A1 Nematic liquid crystal device. |
| 01/30/1991 | EP0409921A1 Optical feedback control in the frequency conversion of laser diode radiation. |
| 01/30/1991 | EP0250581B1 Self-aligning phase conjugate laser |
| 01/30/1991 | EP0124622B1 Light valve |
| 01/30/1991 | EP0088126B1 Encapsulated liquid crystal and method |
| 01/30/1991 | CN1048961A Unit for amplifying light signals in optical fibre transmission line |
| 01/29/1991 | US4989198 Beam control device utilizing beam having a specific direction of polarization to control a laser used in an optical memory system |