Merck Patent Gmbh

Casper Laurens Van Oosten

Ties De Jong

Felix Schlosser

Felix Fritz Rudolf Schlosser

Peer Kirsch

Michael Junge

Andreas Beyer

Ursula Patwal

Susann Beck

Bernd Fiebranz

Rainer Neeff

Stephen Cumming

The invention relates to a switchable optical device () having a layer structure comprising at least one switchable layer () and at least one optical layer (). The at least one switchable layer () comprises a liquid-crystalline material and at least one dye. The at least one optical layer () has at least one reflection band () which includes at least a first part of the visible spectrum and has at least one transmission band () which includes at least a second part of the visible spectrum. The absorption spectrum of the at least one switchable layer () is adjusted by means of the at least one dye such that the light transmission through the switchable optical device () for incident light in the visible light spectrum for at least one of the states of the switchable layer () is set to a predetermined transmission spectrum.

Optical device comprising a switchable layer and at least one optical layer

Device for controlling transmission of radiation, comprises a first substrate comprising a first conductive layer; a second substrate comprising a second conductive layer; an active layer positioned between the first and second conductive layers for controlling the transmission of radiation by altering its light transmissivity dependent on a voltage applied to the first and second conductive layers; a first contact providing a first electrical connection to the first conductive layer; a first portion of an adhesive or solder for attaching a first proximal end of the first contact to the first conductive layer; a second contact providing a second electrical connection to the second conductive layer; and a second portion of adhesive or solder for attaching a second proximal end of the second contact to the first or second conductive layer.

Device for controlling transmission of radiation

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.

Device for the regulation of light transmission

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.

An optical device, having an active matrix, containing polymer dispersed liquid crystals, guest-host liquid crystals, suspended particles and/or polymer stabilized cholesteric liquid crystals, the active high transmissive mode has at least 40% of incoming light transmitted through the optical device and in low transmissive mode less than 40% of incoming light transmitted through the optical device, the active matrix is switchable between high transmissive mode and low transmissive mode. The optical device containing a fail-safe mechanism, which is capable to switch the active matrix from a low transmissive mode in a high transmissive mode without the power of an applied grid. The optical device has a fail-safe mechanism comprising at least one battery and a controller.

Fail safe mechanism for switchable window

The invention pertains to an optical device comprising at least one glass or polymer area, whereby an active matrix is located in contact with the at least one glass or polymer area, the optical device comprises a power supply system located between a first auxiliary plane and a second auxiliary-plane parallel to a glass or polymer area, and a distance L from a third auxiliary-plane or a fourth auxiliary-plane approximately perpendicular to the glass or polymer area. The invention pertains also to a power supply system for such an optical device.

Optical device with power supply system

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.

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Eindhoven, Netherlands

Casper Laurens Van Oosten