Matches 1 - 50 out of 251 1 2 3 4 5 6 >
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7396557 Method for forgery-proof labeling of items, and forgery-proof label  
The invention relates to a method for forgery-proof labeling of items, such as credit cards, bank notes and the like, comprising the following steps: (a) applying, to a first layer ( 1 ) that...
7391546 Discrimination medium and discrimination method using the same  
A discrimination medium 10 a includes a first double layered body 101 having a right-handed circular polarization polymer cholesteric liquid crystal layer 11 and a left-handed circular...
7388627 Discrimination medium and article to be discriminated  
A breakable seal can be discriminated more easily than the conventional one. The discrimination medium 100 has a cholesteric liquid crystal layer 104 , a substrate layer 105 , an adhesive layer...
7362483 Postprocessing apparatus and postprocessing method  
A postprocessing apparatus for conducting postprocessing on an image forming member, including a receiving unit for receiving an image forming member having an image formed thereon, and an...
7315407 Security system, particularly for valuable documents  
The invention relates to a security system especially for security documents, wherein a security element is provided in a carrier plane, that under incident light holographically reconstructs a...
7307770 Hologram imaging device and method of using same  
A hologram imaging device for obtaining hologram images and associated document markings which are commonly being used for document verification is disclosed. The imaging device comprises a housing...
7301682 Optically variable security attribute  
The invention relates to an optically variable security attribute for documents, securities, bank notes, packaging and goods. The task of the invention is to provide an optically variable security...
7297292 Flakes comprising non-chiral liquid crystal material  
The invention relates to liquid crystal flakes, to methods of their preparation and to their use as pigments for security or decorative applications or optical elements.
7292380 Compact zoom lens  
A compact zoom lens that include: a first lens group having a negative refractive power; a second lens group having a positive refractive power; and a third lens group having a positive refractive...
7281810 Optical device and methods of manufacture  
An optical device which generates an optically variable image, the image being optically variable in that it varies according to the position of observation, is manufactured by dividing an...
7268926 Hologram laminate and hologram label  
A hologram laminate and a hologram label allow traces of separation of the hologram to be clearly left on both the adherend and the hologram label and hence makes it possible to prevent reuse of...
7265904 Optical security element  
The invention concerns an optical security element having a substrate layer, in which a first microstructure for producing a first optically perceptible effect is shaped region-wise in a surface...
7245406 Method for forming fine concavo-convex patterns, method for producing optical diffraction structure, and method for copying optical diffraction structure  
A method for forming fine concavo-convex patterns by using a relief formation material 3 having a relief formation layer 2 composed of a resin having thermoplasticity and a relief pattern sheet...
7221760 Information security using digital holography  
A method and system for encrypting multi-dimensional information utilizing digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by...
7221489 Live print scanner with holographic platen  
This invention relates to the use of holographic optical elements in the design and application of biometric scanning instruments used typically for capturing biometric information such as...
7215450 Optically variable element  
The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The...
7201821 Identifying medium and identifying method for object  
The present invention provides a discrimination medium A for discriminating the authenticity of an article by providing an optically discriminating mark on the article. A film 20 having a light...
7199911 Optical structure  
An optical device for security and anti-counterfeit applications has a holographic diffractive structure that includes a discrete region that in response to white light illumination generates a...
7193754 Method for calculating and producing a computer-generated hologram and also a storage medium with a computer-generated hologram and a reading device  
The invention relates to a method for calculating a computer-generated hologram, in which the pixel distribution of the computer-generated hologram is calculated, in which the pixel distribution of...
7182476 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Optical device and methods of manufacture  
An optical device which generates an optically variable image, the image being optically variable in that it varies according to the position of observation, is manufactured by dividing an...
7180643 Live print scanner with holographic imaging a different magnifications  
This invention relates to the use of holographic optical elements in the design and application of biometric scanning instruments used typically for capturing biometric information such as...
7169615 Method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from  
Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an...
7167287 Hologram imaging device and method of using same  
A hologram imaging device for obtaining hologram images and associated document markings which are commonly being used for document verification is disclosed. The imaging device comprises a housing...
7161720 Embedded information carrier for optical data  
In a system for authenticating information, a holographic element, including a first layer of optical information in a first coded pattern and a second layer of optical information in a second...
7158273 Holographic data memory  
A holographic data storage medium has a polymer film which is set up as a storage layer whose refractive index can be changed locally by heating. The polymer film is set up for the storage of...
7149013 Optical element and method for the production thereof  
A method for producing an optical element, preferably a security feature, wherein a film having a first embossed hologram in an embossing layer is provided, and a second embossed hologram is...
7145723 Security element  
A security element ( 2 ) in the form of a laminate can be used for the authentication of a document ( 1 ). The laminate has at least a transparent protective layer, a transparent lacquer layer and...
7142336 Recording medium and hologram reader  
A recording medium including a storage part to hold a medium identifier intrinsic to each recording medium, and a hologram generated using a reference beam modulated with the medium identifier....
7141336 Hologram transfer film  
Disclosed is a hologram transfer film which can realize easy and good transfer of a hologram and, at the same time, can realize stable transfer of the hologram in a transfer process. The hologram...
7126755 Method and apparatus for labeling using diffraction grating-based encoded optical identification elements  
A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating ...
7126729 Double hologram  
The invention relates to a method of providing an article with identifying information, in which a hologram is provided from which at least first and second hologram patterns separated physically...
7114750 Self-authenticating documents  
The present invention provides a durable and self-verifying secure document system and a method for its production, wherein counterfeiting is prevented. The secure document system is potentially...
7102823 Diffractive security element having an integrated optical waveguide  
A diffractive security element ( 2 ) is divided into surface portions, having an optically effective structure ( 9 ) at interfaces embedded between two layers of a layer composite ( 1 ) of plastic...
7101644 Hologram transfer foil  
The invention provides a hologram transfer foil comprising a substrate and a transfer layer laminated thereon, said transfer layer comprising a surface protective layer, a thermoplastic resin...
7095540 Optical security system using fourier plane encoding  
A method of verifying the authenticity of an object is presented. The method comprises providing a primary image; providing a secondary image; encoding the primary image; providing a random code;...
7094502 Methods for transferring holographic images into metal surfaces  
A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans, sheet metal or metal foil. The surfaces of metal shims and print rolls bearing...
7091862 System and method for providing secure identification solutions utilizing a radio frequency device in a non-metallized region connected to a metallized region  
The present invention provides systems and methods for transmitting and receiving information from a radio frequency (RF) transponder. A conductive adhesive connects an antenna in a non-metallized...
7085058 Security element with flip-flop color change effect and magnetic properties, article compromising such a security element and method for producing said security element and said article  
A security element ( 1 ) for application or embedding in objects ( 300 ), in particular for documents of value such as bank notes, credit cards and the like, is structured in a multi-layer fashion...
7085025 Apparatus for recording optical information  
Optical information is stored in an optical information recording medium having an information recording layer utilizing holography with an optical information recording apparatus which includes...
7085024 Hologram laminate and hologram label  
A hologram laminate and a hologram label allow traces of separation of the hologram to be clearly left on both the adherend and the hologram label and hence makes it possible to prevent reuse of...
7078090 Decorative foil  
A decorative foil is in the form of a layer composite structure ( 1 ) and comprises at least a transparent base foil ( 2 ), a transparent cover layer ( 4 ) and a transparent dielectric layer ( 3 )...
7054043 Security element  
The invention relates to an object of value with a security element having at least a first and a second liquid-crystalline material, the first material having thermochromic properties and the...
7054042 Optically variable security device  
An optically variable security device comprising a thin film reflection filter structure ( 23 ) which exhibits a first optically variable effect; and a relief structure ( 20 ) on or in the thin...
7040663 Value document  
The invention relates to a document of value such as a paper of value or ID card with a security element having an optically variable material. Said optically variable material conveys different...
7034688 Selective metal removal process for metallized retro-reflective and holographic films and radio frequency devices made therewith  
A method for selectively removing metal from a metallized substrate (e.g., a metallized polymer film) and the formation fo devices thereby are provided. The method involves selectively exposing the...
7029745 Security articles having diffractive surfaces and color shifting backgrounds  
A security article includes a light transmissive substrate having a first surface and an opposing second surface, with the first surface having an embossed region with an optical diffraction...
7005178 Security articles having diffractive surfaces and color shifting backgrounds  
A security article includes a light transmissive substrate having a first surface and an opposing second surface, with the first surface having an embossed region with an optical diffraction...
6995883 Security document with an optical security area  
A security document, such as a banknote, includes an optical security area having a first periodic optical structure and a security sign provided on the security area and configured to circumscribe...
6995882 Apparatus for recording optical information  
The present invention makes it possible to reduce the size of an optical system for multiplex recording or reproduction of information utilizing holography. A pick-up ( 11 ) of an optical...
6994937 Hologram transfer foil  
The invention provides a hologram transfer foil ( 1 ) comprising, that includes, in order from top to bottom, a substrate ( 7 ), a volume hologram layer ( 2 ) releasably stacked on substrate ( 7 )...
Matches 1 - 50 out of 251 1 2 3 4 5 6 >