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Broer, Eindhoven
Dick D. Broer, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20080203356 | Switchable Narrow Band Reflectors Produced in a Single Curing Step - The invention relates to a method to produce a multiphase polymer-based film by polymerizing monomer in the presence of a non-reactive liquid crystal and a dichroic photoinitiator whereby the polymerization is initiated by the use of linearly polarized light, the initial mixture being cholesteric before polymerization. The invention furthermore relates to the multiphase polymer-based film obtainable by the method according to the invention and products comprising such film. | 08-28-2008 |
Dick J. Broer, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20090027872 | LUMINESCENT OBJECT COMPRISING ALIGNED POLYMERS HAVING A SPECIFIC PRETILT ANGLE - A first aspect of the invention relates to a luminescent object comprising an aligned polymer that contains an oriented photoluminescent material, said aligned polymer having a pretilt angle of 10-90°. The luminescent object according to the present invention may advantageously be employed in luminescent solar concentrator systems as it enables highly efficient transportation of radiation emitted by the photoluminescent material following exposure to incident solar light. Another aspect of the invention concerns a photovoltaic device comprising an electromagnetic radiation collection medium containing the aforementioned luminescent object and a photovoltaic cell capable of converting optical radiation to electrical energy which is optically coupled to the luminescent object. Further aspects of the invention include a fluorescent light activated display and a room lighting system comprising the aforementioned luminescent object. | 01-29-2009 |
| 20090044861 | LUMINESCENT OBJECT AND UTILIZATION THEREOF - A first aspect of the invention relates to a luminescent object comprising: a. a luminescent layer or core containing a photoluminescent material; and b. a wavelength-selective mirror; wherein the luminescent layer or luminescent core is optically coupled to the wavelength-selective mirror, said wavelength-selective mirror being at least 50% transparent to light absorbed by the photoluminescent material and at least 50% reflective to radiation that is emitted by the photoluminescent material. The luminescent object according to the present invention may advantageously be employed in luminescent solar concentrator systems as it enables highly efficient transportation of radiation emitted by the photoluminescent material following exposure to incident solar light. Another aspect of the invention concerns a photovoltaic device comprising an electromagnetic radiation collection medium containing the aforementioned luminescent object and a photovoltaic cell capable of converting optical radiation to electrical energy which is optically coupled to the luminescent object. Further aspects of the invention include a fluorescent light activated display and a room lighting system comprising the aforementioned luminescent object. | 02-19-2009 |
Dirk Broer, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20100028816 | PROCESS FOR PREPARING A POLYMERIC RELIEF STRUCTURE - The invention relates to a process for the preparation of a polymeric relief structure comprising the steps of coating a substrate with a coating composition comprising one or more radiation-sensitive ingredients, locally treating the coated substrate with electromagnetic radiation having a periodic or random radiation-intensity pattern, forming a latent image, and polymerizing and/or crosslinking the resulting coated substrate, wherein the coating composition comprises one or more radical scavengers in an amount sufficient to inhibit/retard substantial polymerization in the non-treated areas of the coated substrate, and low enough to allow polymerization and/or crosslinking in the treated areas in step c, with the proviso that the amount of oxygen present in the coating composition is not equal to the equilibrium amount of oxygen present when the coating composition is in contact with air. | 02-04-2010 |
| 20100045900 | DICHROIC GUEST-HOST POLARIZER - A method for the manufacture of a polarizer is provided. The method comprises providing a liquid crystal composition comprising a liquid crystal host and a viscosity enhancer; providing a thin film of said composition on a substrate; orienting said liquid crystal host to obtain an aligned film in a first liquid crystal mesophase, wherein the liquid crystal host is aligned planar to said substrate; gelating said viscosity enhancer to congeal said film; and obtaining a second liquid crystal state in said congealed film. By the use of a viscosity enhancer in the composition, homeotropic alignment of the liquid crystal host can be suppressed. | 02-25-2010 |
| 20100259261 | MRI RADIO FREQUENCY RECEIVER COMPRISING DIGITAL DOWN CONVERTER - The invention relates to a nuclear magnetic resonance imaging radio frequency—receiver ( | 10-14-2010 |
Dirk J. Broer, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20080278675 | Polarization Gratings in Mesogenic Films - A polarization grating comprising a polarization sensitive photo-alignment layer ( | 11-13-2008 |
| 20100110363 | POLARIZATION GRATINGS IN MESOGENIC FILMS - A polarizer including a polarization grating comprising a polarization sensitive photo-alignment layer and a liquid crystal composition arranged on said photo-alignment layer. An alignment pattern, corresponding to the polarization pattern of a hologram, is recorded in the photo-alignment layer, and the liquid crystal composition is aligned on the photo-alignment layer. | 05-06-2010 |
Jan Dirk Broer, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20110104445 | PROCESS FOR PREPARING A POLYMERIC RELIEF STRUCTURE - The invention relates to a photo-embossing process for the preparation of a polymeric relief structure comprising the steps of: a) coating a substrate with a coating composition comprising one or more radiation-sensitive ingredients and less than 30 wt % polymeric binder material; b) locally treating the coated substrate with electromagnetic radiation having a periodic, non-periodic or random radiation-intensity pattern, forming a latent image, at a temperature below a transition temperature of the coating composition; and c) polymerizing and/or crosslinking the resulting coated substrate, at a temperature above said transition temperature, wherein the transition temperature is a temperature that defines a transition of the coating composition between a state of high viscosity and low viscosity and wherein the coating composition comprises a compound A comprising at least one radiation curable group and a photoinitiator, the coating composition having a transition temperature between 30° C. and 120° C. | 05-05-2011 |