Rolic Ag

Rolic Technologies Ag

Mohammed Ibn-Elhaj

Hubert Seiberle

Sabrina Chappellet

Frederic Lincker

Qian Tang

Satish Palika

Eva Veenstra

Jean-Francois Eckert

David Pires

Izabela Bury S Pires

Martin Schadt

Guy Marck

Klaus Schmitt

Franco Moia

Carsten Benecke

Martin Stalder

Jean-François Eckert

Julien Martz

Masato Hoshino

Patricia Scandiucci De Freitas

Manuel Koechlin

Valsa Kannookadan

Wolfgang Wernet

Frédéric Lincker

Sylvain Jaquet

Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification.

Azimuthally modulated scattering device

The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films.

Cyanostilbenes

The invention relates to conducting and semi-conducting photoreactive compounds, represented by the general formula (I), to the use of these compounds for the preparation of oriented and/or orientation layers; and to their use in the construction of unstructured and structured optical, electro optical or optoelectronic elements and multi-layer systems.

Conducting and semi-conducting alignment materials

The present invention relates to a method for the replication of a patterned surface relief microstructure, comprising the steps of generation of a first layer with a patterned surface relief microstructure, generation of a master, by copying the microstructure of the first layer into a second layer, thereby involving at least one dry or wet etching step, characterized by an additional step, in which the microstructure of the master is brought into contact with a replica material, such that the microstructure of the master is reproduced in the replica. The invention further relates to the elements made as a replica according to the method. The surface relief microstructures are suitable to display images with a positive-negative and/or color image flip. The elements according to the invention are particularly useful for securing documents and articles against counterfeiting and falsification.

Surface relief microstructures, related devices and method of making them

The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).

Photoaligning materials

The present invention relates to photoreactive compounds that are particularly useful in materials for the alignment of liquid crystals.

Photoreactive compounds

The present invention relates to polymer, homo- or copolymer or oligomer, which, when irradiated with polarised light orients perpendicular to the polarization direction of polarized actinic light, for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer (I), compositions thereof, and its use for optical and electro optical devices, such as, liquid crystal devices (LCDs), especially for planar orientation of liquid crystals.

The invention relates to photo-alignment layers for planar alignment of liquid crystals. Photo-alignment layers according to the invention exhibit a characteristic wavelength dependency of the dichroism in the uv wavelength range. The invention further relates to methods for providing such photo-alignment layers as well as liquid crystal devices containing them.

Photo-alignment layers with strong uv-dichroism

Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.

Topologically structured polymer coating

The present invention relates to a new optical component comprising an anisotropic diffuser () with patterned anisotropy; and means () for providing a colorshift observable upon changing viewing angle () and/or changing angle of incident light (). It also relates to methods for making such an optical component and uses of such optical components as security elements with a very high level of security.

Anisotropic optical device with varying local imagewise and method for making same

Photoreactive dendrimers comprising a core portion, branching units and terminal groups, wherein at least one terminal group and/or branching unit is a photoreactive group and wherein the photo reactive groups include preferably cinnamates, coumarins, benzylidenephthalimidines, benzylideneacetophenones, diphenylacetylenes stilbazoles, uracyl, quinolinone, maleinimides, or cinnamylidene acetic acid derivatives and are able to undergo photocyclization, in particular [2+2]-photocyclization.

Growing community of inventors

Allschwil, Switzerland

Mohammed Ibn-Elhaj