| Patent application number | Description | Published |
|---|
| 20080225391 | Zero-order diffractive filter - A Zero-order diffractive filter comprising a first layer ( | 09-18-2008 |
| 20080259455 | Nano-structured zero-order diffractive filter - A zero order diffractive filter for polarised or unpolarised polychromatic light, comprises a grating line ( | 10-23-2008 |
| 20080278815 | ISOTROPIC ZERO-ORDER DIFFRACTIVE FILTER - The present invention relates to an isotropic zero-order diffractive colour filter, to a method to manufacture an embossing tool and to a method to manufacture such a filter. | 11-13-2008 |
| 20090008925 | SECURITY DEVICE FOR THE IDENTIFICATION OR AUTHENTICATION OF GOODS AND METHOD FOR SECURING GOODS USING SUCH A SECURITY DEVICE - A security device for the identification or authentication of goods is described. It comprises a stochastic pattern comprising structures having an average lateral structure size d and arranged such that an image of at least a part of the security device, when treated through 2D Fourier transformation and calculation of a corresponding Power Spectrum Density, may lead to a peak, in a spatial-frequency domain, having a position in this domain correlated to d and a size distribution value w which, when inverted, is correlated to a size distribution of the structures. The value w according to the invention is smaller than 2/d, so that when directing a coherent light beam on at least part of the structures a ring-shaped scattering speckle pattern is formed, on the basis of which d and w may be calculated to implement identification or authentication of the device. | 01-08-2009 |
| 20090257126 | ZERO-ORDER DIFFRACTIVE PIGMENTS - The present invention relates to pigments comprising or consisting of a layer made of a material with an index of refraction that is higher than the index of refraction of the adjacent material by at least 0.25; whereas said layer has a zero-order diffractive micro-structure; whereas said layer acts as an optical waveguide and whereas said layer has a thickness between 50 nm and 500 nm; to processes for its manufacture and to its use. These pigments show a colour effect upon rotation and/or tilting, and it is believed that this colour effect is based on zero-order diffraction. | 10-15-2009 |
| 20090263071 | Optical environmental sensor and method for the manufacturing of the sensor - A sensor which reacts on influences from an environment. The sensor includes a zero-order diffractive color filter. The zero-order diffractive color filter includes a high-index waveguide layer, a zero-order diffractive grating structure and a layer of an reactive material, wherein the reactive material is in contact with the environment and wherein the reactive material changes its optical properties upon interaction with the environment. The reactive material is embedded in the waveguide layer and/or the reactive material is located at a maximum distance d from the waveguide layer. The distancing is effected by an intra layer having a low index of refraction. | 10-22-2009 |
| 20090310905 | PRINTED CIRCUIT BOARD ELEMENT INCLUDING AN OPTOELECTRONIC COMPONENT AND AN OPTICAL WAVEGUIDE - The invention relates to a printed circuit board element ( | 12-17-2009 |
| 20100143467 | Pharmaceutical tablets with diffractive microstructure and compression tools for producing such tablets | 06-10-2010 |
| 20100315713 | ZERO-ORDER DIFFRACTIVE FILTER AND METHOD FOR MANUFACTURING THEREOF - The present invention discloses a method for manufacturing a zero-order diffractive filter comprising a high-index material having an upper surface and a lower surface. The high-index material is positioned between a first low-index matter and a second low-index matter; the lower surface is adjacent to said first low-index matter and the upper surface is adjacent to the second low-index matter. Moreover, the high-index material has an index of refraction that is higher than the index of refraction of both said first low-index matter and said second low-index matter. The method comprises at least the following procedure: selectively providing, by employing at least one wet-coating technique, at least one of the following at least partially: the high-index material onto said first low-index matter. | 12-16-2010 |
| 20110008399 | USE OF ZERO-ORDER DIFFRACTIVE PIGMENTS - The present invention relates to compositions such as coatings, printing inks or cosmetics, which contain pigments comprising or consisting of a layer made of a material with an index of refraction that is higher than the index of refraction of the adjacent material by at least 0.25; whereas said layer has a zero-order diffractive micro-structure; whereas said layer acts as an optical waveguide and whereas said layer has a thickness between 50 nm and 500 nm; to processes for its manufacture and to its use. These pigments show a colour effect upon rotation and/or tilting, and it is believed that this colour effect is based on zero-order diffraction. | 01-13-2011 |
| 20110091068 | Secure Tracking Of Tablets - A method of tracking and tracing tablets, in particular pharmaceutical tablets, includes reading, i.e. detecting, code structure from the tablet, reading additional information from the package on an information sheet, and then comparing the readings to verify authenticity. The code structure may be two-dimensional or three-dimensional. The detected code may further be compared with information stored in a database. | 04-21-2011 |
