Patent application number | Description | Published |
20090195883 | Optical Element Comprising Cells Sealed by Means of a Layer of Adhesive Material - An optical element comprises a base component ( | 08-06-2009 |
20090262436 | Producing a Transparent Optical Element Comprising a Substance Contained in Cells - The invention concerns a method for producing a transparent optical element ( | 10-22-2009 |
20100039611 | TRANSPARENT OPTICAL COMPONENT HAVING CELLS FILLED WITH OPTICAL MATERIAL - A transparent optical component having cells ( | 02-18-2010 |
20110013136 | ELECTRICALLY CONTROLLABLE OPTICAL COMPONENT COMPRISING AN ARRAY OF CELLS - An electrically controllable optical component ( | 01-20-2011 |
20110013252 | COMPOSITION COMPRISING PHOTOCHROMIC DYES IN AN IONIC SOLVENT - A photochromic composition that is liquid at 20° C. and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described. | 01-20-2011 |
20120176661 | TRANSPARENT ELECTROCHROMIC SYSTEM WITH A PLURALITY OF PAIRS OF SUPPLY ELECTRODES - The invention relates to a transparent electrochromic system ( | 07-12-2012 |
20120207968 | SELECTIVE TINTING METHOD - The invention relates to a selective dyeing method used for dyeing a substrate ( | 08-16-2012 |
20120218483 | VARIABLE POWER OPTICAL ELEMENT - A variable power optical element is divided into cells which contain two liquid crystals mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state. | 08-30-2012 |
20120218512 | METHOD FOR PRODUCING AN ANTI-UV PLASTIC FILM WITH NON-UNIFORM SPATIAL DISTRIBUTION OF THE UV ABSORBER AND PHOTOCHROMIC OPTICAL ELEMENTS COVERED WITH SUCH A PLASTIC FILM - Method for producing a plastic film containing a compound absorbing ultraviolet radiation comprising (a) depositing an alcoholic solution of polyvinyl butyral on a transparent plastic support film, (b) evaporating the solvent from the alcoholic solution of polyvinyl butyral so as to form a polyvinyl butyral layer on the transparent support film, (c) printing the polyvinyl butyral layer with an ink absorbing ultraviolet radiation (UV absorber) in a pattern, (d) heating the transparent plastic support film, coated with the printed polyvinyl butyral layer so as to enable at least part of the UV absorber to pass from the polyvinyl butyral layer to the plastic support film, (e) removing the polyvinyl butyral layer, preferably by washing with a suitable solvent. The application also relates to the film obtained by this method and the use of this film for producing a photochromic element with a spatially non-uniform behaviour. | 08-30-2012 |
20120242954 | PHOTOCHROMIC OPTICAL ARTICLE COMPRISING A SATURATED PHOTOCHROMIC COATING AND A FILM ABSORBING UV RADIATION - The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20° C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighbouring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20° C. or greater is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article. | 09-27-2012 |
20120307340 | TRANSPARENT ELECTROCHROMIC SYSTEMS WITH A PLURALITY OF POLARISATION ELECTRODES - The invention relates to transparent electrochromic systems which each include one pair of supply electrodes and at least one pair of polarisation electrodes. The polarisation electrodes prevent a reaction of mutual neutralisation of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralisation reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarisation electrodes produce an electric field inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas. | 12-06-2012 |