Patent application number | Description | Published |
20090052009 | NON-LINEAR OPTICAL DEVICE SENSITIVE TO GREEN LASER - A non-linear optical device comprising a polymer configured to be photorefractive upon irradiation by a green laser. The polymer comprises a repeating unit including a moiety selected from the group consisting of the structures (M-1), (M-2) and (M-3), as defined herein. | 02-26-2009 |
20090197186 | OPTICAL DEVICES RESPONSIVE TO BLUE LASER AND METHOD OF MODULATING LIGHT - An optical device comprising a photorefractive composition configured to be photorefractive upon irradiation by a blue laser. The photorefractive composition comprises a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulas (Ia), (Ib) and (Ic), as defined herein. | 08-06-2009 |
20090246716 | HIGH REFRACTIVE INDEX SOL-GEL COMPOSITION AND METHOD OF MAKING PHOTO-PATTERNED STRUCTURES ON A SUBSTRATE - Described herein are sol-gel compositions, sol-gel composition precursors, and methods of fabricating photo-patterned structures on a substrate. The sol-gel compositions possess a combination of high refractive index and low optical loss, even without incorporating metal oxides or metal alkoxides. The sol-gel compositions are further useful in waveguide fabrication applications, especially at the telecommunication wavelength range of 1300-1600 nm. Furthermore, the fabrication of patterned structures using the sol-gel compositions described herein can be achieved in a variety of substrates, including, for example, silicon-on-silica substrates and molybdenum-on-glass substrates. | 10-01-2009 |
20100060975 | SYSTEMS AND METHODS FOR IMPROVING THE PERFORMANCE OF A PHOTOREFRACTIVE DEVICE - A photorefractive device ( | 03-11-2010 |
20100096603 | OPTICAL DEVICES RESPONSIVE TO NEAR INFRARED LASER AND METHODS OF MODULATING LIGHT - A photorefractive composition that is photorefractive upon irradiation by a near infrared (NIR) laser. The photorefractive composition comprises a sensitizer and a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic), as defined herein. The photorefractive composition can be used in optical devices. | 04-22-2010 |
20100099789 | METHOD FOR MODULATING LIGHT OF PHOTOREFRACTIVE COMPOSITION - A method for forming a grating in a photorefractive composition comprising the steps of: providing a photorefractive composition containing a sensitizer and a polymer, wherein the polymer includes a first repeating unit which includes a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic) as defined herein; and irradiating the photorefractive composition with a near infrared (NIR) laser, wherein the composition provides long grating holding time and the grating signal can be read out without external bias voltage. | 04-22-2010 |
20100152338 | NONLINEAR OPTICAL MATERIAL COMPOSITION AND METHOD OF MANUFACTURE - Embodiments of the present disclosure provide non-linear optical compounds and compositions comprising a silole-derivative. In an embodiment, the silole derivative comprises a chromophore including a structure represented by Formula (A): wherein each Of R | 06-17-2010 |
20110013124 | LYOTROPIC CHROMOPHORIC COMPOUNDS, LIQUID CRYSTAL SYSTEMS AND OPTICALLY ANISOTROPIC FILMS - Lyotropic chromophoric compounds comprised of a naphthalimide derivative, a perylene-3,4-dicarboxylic imide derivative, or a perylenetetracarboxylic diimide derivative are described. The compounds can be used to form liquid crystal systems possessing high quality optical properties. The resulting liquid crystal systems are readily applied onto a substrate to obtain optically isotropic or anisotropic, at least partially crystalline films applicable in various fields. | 01-20-2011 |
20110207049 | ASYMMETRIC PHOTO-PATTERNABLE SOL-GEL PRECURSORS AND THEIR METHODS OF PREPARATION - Described herein are photo-patternable sol-gel precursors and their methods of preparation. The sol-gel precursors are thermally stable and form compositions that have high refractive indices and low optical loss values. The precursors can be used to make sol-gel compositions that are ideally suited toward optical waveguide applications in the realm of telecommunications wavelengths. | 08-25-2011 |
20110262845 | METHOD FOR MODULATING LIGHT OF PHOTOREFRACTIVE COMPOSITION WITHOUT EXTERNAL BIAS VOLTAGE - A method for modulating light, comprising the steps of providing a photorefractive composition containing a sensitizer and a polymer, wherein the sensitizer includes at least one selected from the group consisting of anthraquinone, -nitro-9-fluorenone and 2,7-dinitro-9-fluorenone and irradiating the photorefractive composition with a laser. The photorefractive composition provides a grating without using an external bias voltage. | 10-27-2011 |
20110317102 | LYOTROPIC LIQUID CRYSTAL SYSTEMS BASED ON AROMATIC TETRACARBOXYLIC BISBENZOIMIDAZOLE DERIVATIVES AND METHODS FOR MAKING - Compounds derived from aromatic tetracarboxyl bisbenzoimidazoles are disclosed. These compounds are capable of forming liquid crystal systems that can produce optically isotropic or anisotropic films with desirable optical properties. Formulae (I) or (II), or a salt thereof; wherein y is an integer in the range from 0 to about 4. | 12-29-2011 |
20120058418 | THREE-DIMENSIONAL HOLOGRAPHIC DISPLAY DEVICE - A three-dimensional holographic display device includes a holographic display medium constituted by a photorefractive organic composition, and an optical system for recording and reproducing a holographic image using the holographic display medium. The photorefractive organic composition includes a photorefractive organic polymer having a tri-alkyl amino side-chain group. | 03-08-2012 |
20120275007 | OPTICAL DEVICES FOR MODULATING LIGHT OF PHOTOREFRACTIVE COMPOSITIONS WITH THERMAL CONTROL - Described herein are optical devices comprising a photorefractive layer and at least two inert layers, such that the photorefractive layer is sandwiched between the two inert layers. The photorefractive layer may include a photorefractive composition that is photorefractive upon irradiation by a laser beam. In some embodiments, the photorefractive composition is formulated such that a grating that is irradiated into the photorefractive composition can be read out of the photorefractive composition without applying an external bias voltage. Furthermore, a grating that is written into the composition may be controlled using thermal treatment. | 11-01-2012 |
20130074927 | HIGHLY-FLUORESCENT AND PHOTO-STABLE CHROMOPHORES FOR ENHANCED SOLAR HARVESTING EFFICIENCY - The invention provides highly fluorescent materials comprising a single (n=0) or a series (n=1, 2, etc.) of benzo heterocyclic systems. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices. | 03-28-2013 |
20130089946 | WAVELENGTH CONVERSION FILM HAVING PRESSURE SENSITIVE ADHESIVE LAYER TO ENHANCE SOLAR HARVESTING EFFICIENCY - Described herein are wavelength conversion films that are easy-to-apply to solar cells, solar panels, or photovoltaic devices using an adhesive layer. The wavelength conversion films include a wavelength conversion layer with a photostable chromophore and are useful for improving the solar harvesting efficiency of solar cells, solar panels, and photovoltaic devices. | 04-11-2013 |
20130128339 | PHOTOREFRACTIVE COMPOSITION RESPONSIVE TO MULTIPLE LASER WAVELENGTHS ACROSS THE VISIBLE LIGHT SPECTRUM - Described herein are compositions that are photorefractive upon irradiation by multiple laser wavelengths across the visible light spectrum. Embodiments of the photorefractive composition comprise a polymer, a chromophore, and a sensitizer, wherein the polymer comprises a repeating unit including at least a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic), as defined herein. The photorefractive composition can be used in optical devices. | 05-23-2013 |
20130139868 | WAVELENGTH CONVERSION MATERIAL AS ENCAPSULATE FOR SOLAR MODULE SYSTEMS TO ENHANCE SOLAR HARVESTING EFFICIENCY - This invention relates to an encapsulation structure comprising a luminescent wavelength conversion material for at least one solar cell or photovoltaic device which acts to enhance the solar harvesting efficiency of the solar cell device. The luminescent wavelength conversion material comprises at least one chromophore and an optically transparent polymer matrix. Application of the encapsulation structure, as disclosed herein, to solar harvesting devices, including solar cells, solar panels, and photovoltaic devices, improves the solar harvesting efficiency of the device by widening the spectrum of incoming sunlight that can be effectively converted into electricity by the device. | 06-06-2013 |
20130163086 | SYSTEMS AND METHODS FOR IMPROVING THE PERFORMANCE OF A PHOTOREFRACTIVE DEVICE BY UTILIZING ELECTROLYTES - A photorefractive device ( | 06-27-2013 |
20130170016 | PHOTOREFRACTIVE DEVICE CONTAINING A CHROMOPHORE-DOPED POLYMER LAYER AND ITS MANUFACTURING METHOD - A photorefractive device ( | 07-04-2013 |
20130284265 | WAVELENGTH CONVERSION PERYLENE DIESTER CHROMOPHORES AND LUMINESCENT FILMS - This invention is related to novel perylene diester derivatives represented by the general formula (I) or general formula (II) as described herein. The derivatives are useful in various applications, such as luminescent dyes for optical light collection systems, fluorescence-based solar collectors, fluorescence-activated displays, and/or single-molecule spectroscopy. The invention also relates to a luminescent medium, such as a luminescent film, that can significantly enhance the solar harvesting efficiency of thin film CdS/CdTe or CIGS solar cells. The luminescent medium comprises an optically transparent polymer matrix and at least one luminescent dye that comprises a perylene diester derivative. Over 16% of an efficiency enhancement to a CdS/CdTe solar cell and over 12% of an efficiency enhancement to a CIGS solar cell can be achieved. | 10-31-2013 |
20130321897 | PHOTOREFRACTIVE DEVICES HAVING SOL-GEL BUFFER LAYERS AND METHODS OF MANUFACTURING - A photorefractive device ( | 12-05-2013 |
20130341573 | PHOTOREFRACTIVE COMPOSITION COMPRISING ELECTROLYTES IN A PHOTOREFRACTIVE LAYER AND METHOD OF MAKING THEREOF - A photorefractive composition and a photorefractive device comprising the composition are disclosed. The composition is configured to be photorefractive upon irradiation by a laser having a wavelength in the visible light spectrum and comprises a polymer, a non linear optical chromophore, a plasticizer, and an electrolyte. In an embodiment, the percentage of polymer recurring units that comprise a charge transport moiety is less than 30%. In an embodiment, the electrolyte comprises one or more of ammonium salts, heterocyclic ammonium salts, and phosphonium salts. In an embodiment, the polymer is selected from the group consisting of polycarbonate, polyurea, polyurethane, poly(meth)acrylate, polyester, polyimide, and combinations thereof. Preferably, the composition has a diffraction efficiency of about 25% or greater upon irradiation with a visible light laser. | 12-26-2013 |
20130341574 | PHOTOREFRACTIVE COMPOSITION AND DEVICE COMPRISING THE COMPOSITION - A photorefractive composition and a photorefractive device comprising the composition are disclosed. The composition is configured to be photorefractive upon irradiation by a laser having a wavelength in the visible light spectrum and comprises a polymer, a non linear optical chromophore, and a plasticizer. In an embodiment, the percentage of polymer recurring units that comprise a charge transport moiety is less than 30%. In an embodiment, the polymer is selected from the group consisting of polycarbonate, polyurea, polyurethane, poly(meth)acrylate, polyester, polyimide, and combinations thereof. Preferably, the composition has a diffraction efficiency of about 30% or greater upon irradiation with a visible light laser. | 12-26-2013 |
20140311566 | MICROSTRUCTURED WAVELENGTH CONVERSION FILMS FOR ENHANCED SOLAR HARVESTING EFFICIENCY - Described herein are microstructured wavelength conversion films for enhanced solar harvesting efficiency of photovoltaic devices or solar cells. The microstructured wavelength conversion film comprises a luminescent medium that is provided with a microstructured surface, where the luminescent medium and the microstructured surface can be combined into a single layer or made up of two or more separate layers. A photovoltaic module which utilizes the medium to improve the performance of photovoltaic devices or solar cells is also provided, along with a method of improving a solar cell or photovoltaic device by utilizing the microstructured wavelength conversion film. | 10-23-2014 |
20150041042 | PRESSURE SENSITIVE ADHESIVE TYPE OF WAVELENGTH CONVERSION TAPE FOR ENHANCING SOLAR HARVESTING EFFICIENCY - Described herein are pressure sensitive adhesive type of wavelength conversion tapes that are easy-to-apply to a solar harvesting device using an adhesive layer. The pressure sensitive adhesive type of wavelength conversion tape comprises a pressure sensitive adhesive layer, wherein the pressure sensitive adhesive layer comprises one, or multiple, luminescent dyes that convert photons of a particular wavelength to a different more desirable wavelength. The adhesive layer is designed to adhere to the light incident surface of a solar harvesting device such as a solar cell, solar panel, or photovoltaic device, to improve the efficiency of the device. | 02-12-2015 |
20150041052 | WAVELENGTH CONVERSION LAYER ON A GLASS PLATE TO ENHANCE SOLAR HARVESTING EFFICIENCY - Described herein are wavelength converting devices comprising a glass plate and a wavelength conversion layer over a glass plate that can be applied to solar cells, solar panels, or photovoltaic devices to enhance solar harvesting efficiency of those devices. The wavelength conversion layer of the wavelength converting device comprises a polymer matrix and one, or multiple, luminescent dyes that convert photons of a particular wavelength to a more desirable wavelength. | 02-12-2015 |