Abstract: The present application concerns a switchable device for the regulation of light transmission, which has a compartmented structure, where the switching state of each of the compartments can be controlled individually.

Abstract: The present application discloses a switchable device, comprising a switching layer and a first conductive layer and a second conductive layer, where the switching layer is positioned between the first and the second conductive layer, and where at least one of the first and the second conductive layers comprises a plurality of isolating sections and a plurality of conductive sections, where the isolating sections and the conductive sections alternate over the area of the conductive layer, and where the switching state of the switchable device is controlled by touch motions.

Abstract: The present application concerns a switchable device for the regulation of light transmission, which has a compartemented structure, where the switching state of each of the compartments can be controlled individually.

Abstract: The present application discloses a switchable device, comprising a switching layer and a first conductive layer and a second conductive layer, where the switching layer is positioned between the first and the second conductive layer, and where at least one of the first and the second conductive layers comprises a plurality of isolating sections and a plurality of conductive sections, where the isolating sections and the conductive sections alternate over the area of the conductive layer, and where the switching state of the switchable device is controlled by touch motions.

Abstract: The application relates to a liquid-crystalline medium comprising at least one dichroic dye having a rylene structure which absorbs red light. The application furthermore relates to a device, preferably a device for the regulation of the passage of energy through a light-transmitting area, which contains the liquid-crystalline medium.

Abstract: A guest-host liquid crystal dye mixture comprising a calamatic, thermotropic liquid crystal as host and a dichroic fluorescent dye as guest, characterized in that the dichroic fluorescent dye is a multichromophoric dye containing at least a group with the general formula Ry-X1—C1, wherein Ry is a chromophore from the rylene family, C1 is a second chromophore and X1 is a spacer that interrupts the conjugation between Ry and C1, the spacer X1 is selected such that it introduces rigidity against bending or folding over an axis perpendicular to the length of the molecule.

Abstract: The application relates to a liquid-crystalline medium comprising at least one dichroic dye having a rylene structure which absorbs red light. The application furthermore relates to a device, preferably a device for the regulation of the passage of energy through a light-transmitting area, which contains the liquid-crystalline medium.

Abstract: A controllable glazing, containing at least a first and a second reflective polarizer and a liquid-crystal-dye layer. The liquid-crystal-dye-layer is arranged between the first and the second reflective polarizer. The alignment of the dichroic dye and the alignment of the liquid crystal of the liquid-crystal-dye-layer are changeable. The first and the second reflective polarizer are denoted for electromagnetic radiation in the wavelength range of ?1 to ?2 and the liquid-crystal-dye-layer is selected such that the electromagnetic radiation transmission through the controllable glazing is controlled in the wavelength range of ?3 to ?4 by dye-absorbance and in the wavelength range ?1 to ?2 by alignment of the liquid crystal and the dye in the liquid-crystal-dye layer. The wavelength range of ?1 to ?2 is within the wavelength range of 750 nm to 2000 nm and the wavelength range of ?3 to ?4 is within the wavelength range of 380 nm to 750 nm.

Abstract: The invention provides a luminescent optical device (10) having an optical waveguide (200). The luminescent optical device (10) further has a photo-luminescent structure (100) on or inside the optical waveguide (200). The photo-luminescent structure (100) comprises a plurality of photo-luminescent domains (110) containing photo-luminescent material (120). The photo-luminescent material (120) is capable of emitting emission light upon excitation by excitation light. The photo-luminescent domains (110) are arranged to emit, upon excitation by excitation light, at least part of the emission light into the optical waveguide layer (200). The luminescent optical device (10) further may comprise a lens structure (300) on the optical waveguide (200).

Abstract: A guest-host liquid crystal dye mixture comprising a calamatic, thermotropic liquid crystal as host and a dichroic fluorescent dye as guest, characterized in that the dichroic fluorescent dye is a multichromophoric dye containing at least a group with the general formula Ry-X1—C1, wherein Ry is a chromophore from the rylene family, C1 is a second chromophore and X1 is a spacer that interrupts the conjugation between Ry and C1, the spacer X1 is selected such that it introduces rigidity against bending or folding over an axis perpendicular to the length of the molecule.

Abstract: A controllable glazing, containing at least a first and a second reflective polarizer and a liquid-crystal-dye layer. The liquid-crystal-dye-layer is arranged between the first and the second reflective polarizer. The alignment of the dichroic dye and the alignment of the liquid crystal of the liquid-crystal-dye-layer are changeable. The first and the second reflective polarizer are denoted for electromagnetic radiation in the wavelength range of ?1 to ?2 and the liquid-crystal-dye-layer is selected such that the electromagnetic radiation transmission through the controllable glazing is controlled in the wavelength range of ?3 to ?4 by dye-absorbance and in the wavelength range ?1 to ?2 by alignment of the liquid crystal and the dye in the liquid-crystal-dye layer. The wavelength range of ?1 to ?2 is within the wavelength range of 750 nm to 2000 nm and the wavelength range of ?3 to ?4 is within the wavelength range of 380 nm to 750 nm.

Abstract: The invention provides a luminescent optical device (10) having an optical waveguide (200). The luminescent optical device (10) further has a photo-luminescent structure (100) on or inside the optical waveguide (200). The photo-luminescent structure (100) comprises a plurality of photo-luminescent domains (110) containing photo-luminescent material (120). The photo-luminescent material (120) is capable of emitting emission light upon excitation by excitation light. The photo-luminescent domains (110) are arranged to emit, upon excitation by excitation light, at least part of the emission light into the optical waveguide layer (200). The luminescent optical device (10) further may comprise a lens structure (300) on the optical waveguide (200).

Abstract: The invention relates to a multifunctional optical sensor, having at least 2 areas which independently react to different input parameters, the sensor comprising a substrate and a polymeric layer comprising polymerized liquid crystal monomers having an ordered morphology, wherein the color, the reflectivity or the birefringence of the sensor changes due to a change of the morphology, wherein said change of the morphology is caused by physical contact with a chemical agent such as a gas or liquid a change of temperature, or passage of time. The invention also relates to a process for the preparation of the sensor and for the use of a film comprising a single substrate, a layer having a cholesteric liquid crystalline structure for application in labels for packaging of perishable goods, food, fine chemicals, bio-medical materials.