Fokus Tec Gmbh

Other

Bayer Aktiengesellschaft

Focustec Gmbh

Hoffmann, Klaus

Faustig, Stephanie

Michael Rutloh

Thomas Fischer

Joachim Stumpe

Klaus Hoffmann

Uwe Claussen

Dietrich Haarer

Thomas Bieringer

Ralf Ruhmann

Claus D Eisenbach

Karl Fischer

Roland Wuttke

Lutz Laser

The Kerr effect depends very strongly on the temperature and is associated with high operating voltages. The present invention relates to an electrically controllable optical element which comprises a cell (D) filled with a starting mixture (K) and having two substrates () and a conductive layer () applied onto the inner surface of the respective substrate (), wherein the starting mixture (K) comprises a mixture of dipolar, rod-shaped molecules () and semi-mesogenes () as active constituents, and wherein the starting mixture (K) forms a thin layer having a wide-meshed, anisotropic network () produced by photo-polymerization between the structured or/and flat conductive layers (), which are applied onto a substrate (), in a thin-film cell (D). According to the invention, an optically active surface profile (O) is incorporated on the inner surface of a substrate (or) or into the substrate (or) or both substrates (and).

Electrically controllable optical element, in particular thin-film cell having an optically active surface profile, and method for the production thereof

In order to configure or produce an electrically controllable optical element on the basis of the electro-optic Kerr effect with a low threshold and operating voltage, a minimized temperature dependence of the effect and a low response time, the Kerr liquid according to the invention comprises a mixture of rod-shaped molecules and non-rod-shaped molecules as active composites, a thin layer having a pre-stamping, wide-mesh, anisotropic network between structured and/or planar conductive layer applied to a substrate thus configure a thin-film cell in such a way that without electric field the state of the active composite of the Kerr liquid in the working temperature region RT is isotropic and that by electrically continuous adjustment, of the voltage U or by a switching-on or switching-off a change the voltage U, in the optical element a voltage-induced phase shift or a refractive index deviation is generated and the light passes through an electrode gap perpendicular to the electrodes.

Electrically controllable optical element made of an optically isotropic liquid, in particular lens, and method for the production thereof on the basis of liquid composites

Process for intensifying information in photo-addressable side-chain

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Berlin, Germany

Michael Rutloh