Patent
Optical switch devices
Christopher Chapman Rich,Joel Mikael Petersen,Roger Winston Phillips,John Michael Tamkin +3 more
- 18 Apr 2017
17
TL;DR: In this article, a security device includes an array of lenses and a plurality of first and second segments disposed under the arrays of lenses, each of which can include one or more microstructures or nanostructures configured to produce different colors for the first or second image.
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Abstract: A security device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second image without presenting the first image for viewing. At least one first or second segment can include one or more microstructures or one or more nanostructures configured to produce one or more colors for the first or second image.
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Citations
Patent
Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products
Mikael Joel,Christopher Chapman Rich,Phillip Christopher Hervey,John Michael Tamkin +3 more
- 12 Jul 2016
TL;DR: In this paper, an optical product can reproduce a first 3D image of at least part of a first-dimensional object and a second-dimensional image of the same object at a different angle of view.
14
Patent
Security elements and methods of manufacture thereof
Holmes Brian
- 26 Sep 2019
TL;DR: In this paper, a security element including a first layer having a first surface, an array of image regions across the surface, each region including at least first and second sub-regions, a first diffractive optically variable effect generating structure in or on the surface across the first layer, and a second diffractive optical variable effect generated structure on or on a surface across second layer.
4
Patent
Security element with effect pigments and an embossing structure and method for the production thereof
Mengel Christoph,Franz Peter,Huynh Thanh-Hao,Mayer Karlheinz,Fuhse Christian,Bichlmeier Stefan,Pfeiffer Matthias,Baldus Christof +7 more
- 02 Jan 2018
TL;DR: In this article, a value and safety document comprises a substrate having a front side and a back side, and an ink layer is applied to the front or back sides of the substrate, and a first motif is incorporated into the ink layer, and is combined with a second motif.
3
Patent
Optical security component visible in reflection, manufacture of such a component, and secure document provided with such a component
Petiton Valery,Chikha Khalil,Pigeon Yoran Eli,Tollet Vincent,Daniel Francoise +4 more
- 15 Apr 2020
TL;DR: In this paper, the authors proposed an optical security component intended to be observed in reflection, with the naked eye, according to face of observation. And they described a first diffractive structure comprising a first pattern with at least one set of modules disposed side-by-side, in a given direction (X) of arrangement, a maximum width (l) of each module defined in the direction of arrangement being less than 300 μm.
2
Patent
Optical device and method of manufacture thereof
Godfrey John
- 03 Oct 2019
TL;DR: In this paper, an optical device is described, comprising of a colour shifting layer that exhibits different colours depending on the angle of incidence of incident light, and first and second arrays of at least partially transparent microstructures covering at least a part of the color shifting layer in order to generate a first optically variable effect.
1
References
Patent
Optical switching apparatus
Graham John Woodgate,Jonathan Harrold +1 more
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TL;DR: In this article, a light direction switching apparatus consisting of a passive birefringent lens and a switchable polariser is described, which can be used with or incorporated in a display device, such as a liquid crystal display device.
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Patent
Micro-optic security and image presentation system
Richard A. Steenblik,Mark J. Hurt,Gregory R. Jordan +2 more
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TL;DR: In this paper, an in-plane image consisting of an array or pattern of image icons and an array of focusing elements is presented, where the interaction of the focusing elements with the image icons forms a separate synthetically magnified image that serves to control the field of view of the inplane image and, thus, serves to modulate or control the extent of appearance of the image.
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Patent
Self-verifying security documents
John Charles Taylor,Bruce Alfred Hardwick,Wayne Kevin Jackson,Paul Zientek,Cameron Rex Hibbert +4 more
- 08 Oct 1997
TL;DR: A self-verifying security document, such as a banknote, comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3), the sheet has a window (5) of transparent plastics material which includes self verification means (11) for verifying a security device (4) provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window into register with the security device as discussed by the authors.
190
Patent
Multiple image security features for identification documents and methods of making same
Brian Labrec,Joseph Anderson,Robert Jones,Batey Danielle +3 more
- 18 Dec 2002
TL;DR: In this article, a secure ID card with multiple images is presented, where information is provided to an information bearing layer (106) which is disposed beneath an outer laminate layer (102), having lenticules (116a) through (116n) formed thereon, the information (118a through (118n) constructed and arranged to be capable of providing multiple images when printed information is viewed at different predetermined angles through an appropriate lens.
189
Patent
Image presentation and micro-optic security system
Richard A. Steenblik,Mark J. Hurt,Gregory R. Jordan +2 more
- 18 May 2006
TL;DR: In this paper, an image presentation system employing microstructured icon elements to form an image is presented, where the image system is designed to stand alone and be the image viewed or the information read by use of a magnifying device.
184