Patent
Representation element comprising optical elements arranged on a substrate, for producing an image composed of light spots and suspended above or below the substrate
Christian Fuhse,Wittich Kaule +1 more
- 11 Oct 2011
20
TL;DR: In this paper, a representation element is designed to produce a light spot image (30) consisting of a plurality of light spots that appear to the observer to be suspended above or below the surface region, and are arranged in a pre-determined pattern.
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Abstract: The invention relates to a representation element (20) comprising a substrate (22) having a surface region containing a plurality of optical elements (24). According to the invention, the representation element (20) is designed to produce, when illuminated (34), a light spot image (30) consisting of a plurality of light spots (32) that appear to the observer (40) to be suspended above or below the surface region, and are arranged in the form of a pre-determined pattern. Said optical elements are formed by refractive and/or reflective optical elements (24) and at least one refractive and/or reflective optical element is associated with each light spot (32) of the light spot image, contributing to the production of the light spot (32) associated therewith when the representation element (20) is illuminated (34).
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Citations
Patent
Head-mounted display apparatus
Seock-Hwan Kang,Hong-shik Shim,Won-Sang Park +2 more
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TL;DR: A head-mounted display apparatus includes a display unit including a substrate and display elements, and an optical element as mentioned in this paper, where the optical element is in an optical path of light that is emitted from the display unit and has through-holes that respectively correspond to the plurality of light-transmitting portions.
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Patent
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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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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
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TL;DR: A security element for manufacturing value documents, such as banknotes, checks or the like, comprises a top on which a microrelief structure is developed that has at least two sub-regions that each comprise a plurality of groove-and/or rib-shaped structural elements that lie adjacent to one another and extend along a longitudinal direction, and are reflecting or backscattering as discussed by the authors.
8
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TL;DR: An optically variable device includes a substrate and a plurality of optical elements formed in or on the substrate and being structured to provide a 3D optical effect for a viewer when light is incident on the optical elements as discussed by the authors.
3
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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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Security element and method for the production thereof
Manfred Heim
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TL;DR: In this paper, a security element for protecting valuable objects having first and second authentication features is proposed, where the first authentication feature consists of a plurality of focussing components arranged in a first raster and a second arrangement consisting of plurality of microscopic structures arranged in the second raster.
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Patent
Sheeting with composite image that floats
Douglas S. Dunn,Robert L. W. Smithson,Robert T. Krasa,Michael W. Dolezal +3 more
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TL;DR: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both as discussed by the authors.
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Patent
Imageing element and display
Satoshi Maekawa
- 22 Mar 2007
TL;DR: In this article, a plurality of unit optical elements for reflecting light on one or more mirror surfaces arranged perpendicularly or at an angle nearly perpendicular to the element face are disposed to constitute an optical imaging element.
63
Patent
Three-dimensional integral imaging and display system using variable focal length lens
Gyoung Il Cho,Cheong Soo Seo,Tae Hyeon Kim +2 more
- 02 Nov 2005
TL;DR: In this paper, a three-dimensional (3D) display system using a variable focal length lens includes at least one 2D display device, configured to display at least two 2D images, and an array of micromirror array lenses optically coupled to the display device.
58