Commander, GB
Lawrence Commander, Reading GB
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20100231846 | Substrates - The present invention relates to improvements in security devices that can be used in varying shapes and sizes for various authenticating or security applications, particularly an optically variable security device utilising liquid crystal materials. The security device comprises a liquid crystal layer ( | 09-16-2010 |
20100270379 | Security Devices - The present invention relates to improvements in security devices that can be used in varying shapes and sizes for various authenticating or security applications, and in particular to an optically variable security device utilising colourshift materials. The security device ( | 10-28-2010 |
Lawrence George Commander, Reading GB
Patent application number | Description | Published |
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20080258457 | Method of manufacturing a security device - A method of manufacturing a security device comprises: | 10-23-2008 |
20090034082 | Optically Variable Devices - A security device comprises a substrate ( | 02-05-2009 |
20090243279 | Security device for security substrates - The invention relates to a security device for security substrates, such as paper, used for making security documents, such as bank notes, having anti-counterfeitable features. The security device comprising a carrier ( | 10-01-2009 |
20110122499 | Optically variable devices - A security device comprises a substrate having an array of microlenses on one side and one or more corresponding arrays of microimages on the other side. The microimages are located at a distance from the microlenses substantially equal to the focal length of the microlenses. The substrate is sufficiently transparent to enable light to pass through the microlenses so as to reach the microimages. Each microimage is defined by an anti-reflection structure on the substrate formed by a periodic array of identical structural elements, light passing through a substrate and impinging on the microimages being reflected to a different extent than light which does not impinge on the microimages thereby rendering the microimages visible. | 05-26-2011 |
Lawrence George Commander, Berkshire GB
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20090108578 | Security devices for security substrates - The invention relates to a security device for security substrates, such as paper used for making security documents, such as banknotes, having anti-counterfeitable features. The invention therefore provides a security device comprising a carrier of at least partially light transmitting polymeric material. A carrier bears a plurality of first indicia which are easily visible to the human eye. The first indicia are defined by a plurality of smaller second indicia which are less visible to the human eye positioned relative to each other to enable the first indicia to be visualised. | 04-30-2009 |
Lawrence George Commander, Hampshire GB
Patent application number | Description | Published |
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20080231976 | Security Device Based on Customized Microprism Film - A security device comprises at least two regions, each region comprising a prismatic surface structure defining an array of substantially planar facets. Each region forms a reflector due to total internal reflection when viewed at least one first viewing angle and is transparent when viewed at least one second viewing angle. The said at least one first viewing angle of one region is different from the at least one first viewing angle of the other region. Furthermore, a security device comprising an asymmetrical or truncated prismatic surface structure is located in a transparent area of an article. | 09-25-2008 |
Lawrence George Commander, Tilehurst GB
Patent application number | Description | Published |
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20120268598 | SECURITY DEVICE - A lenticular device includes an array of lenticular focusing elements located over a corresponding array of pairs of image strips such that, in a first viewing direction, a first image strip from each pair is viewed by respective ones of the lenticular focusing elements and, in a second viewing direction, different from the first, a second image strip from eachpair is viewed by respective ones of the lenticular focusing elements, One of each pair of image strips has portions defining a first image in a first colour and a second image in a second colour respectively, and the other of each pair of image strips has portions defining the first image in the second colour and the second image in the first colour respectively, whereby on tilting the device, a colour switch is observed between the first and second images. | 10-25-2012 |
20120268819 | SECURITY DEVICE AND METHOD OF MANUFACTURING THE SAME - A security device includes at least two lenticular devices, each lenticular device having an array of elongate lenticular focusing elements located above respective sets of image strips, wherein the elongate directions in which the lenticular focussing elements of the two lenticular devices extend are different. | 10-25-2012 |
20120274998 | SECURITY DEVICE - A security device having a lenticular device that includes an array of lenticular focusing elements located over a corresponding array of sets of image strips such that at different viewing directions, a corresponding image strip from each set is viewed via respective ones of the lenticular focusing elements wherein the image strips are defined at least in part by a relief structure. | 11-01-2012 |
20130044362 | OPTICAL DEVICE - An optical device comprises a transparent substrate having: an array of micromirrors on one surface of the substrate; and a corresponding array of microimage elements, the micromirrors presenting convex surfaces to the microimage elements whereby each convex surface causes ambient light to pass through the microimage element array from a virtual focus, the arrangement of the microimage elements and micromirrors being such that they cooperate to generate a lenticular type or a moiré magnification effect. | 02-21-2013 |
Michael Commander, Shaldon GB
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20090325443 | Fabricating symmetric and asymmetric shapes with off-axis reinforcement from symmetric preforms - A device for obtaining off-axis reinforcement of a woven object. The device is made up of a fixed mandrel and a rotating mandrel. The rotating mandrel is connected to the fixed mandrel by a shaft that rotates through the middle of the fixed mandrel. The shaft allows the rotating mandrel to move up and down in relation to the fixed mandrel. A portion of the woven object can be clamped to the fixed mandrel while a second portion of the woven object can be clamped to the rotating mandrel. When rotated, the rotating mandrel causes the warp fibers in the woven object to twist off the 0° direction while fill or hoop fibers remain substantially parallel to the 90° direction. | 12-31-2009 |