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8174743 |
Optical security device
A holographic effect generating structure (HEGS), either stand alone or integrated with a security diffractive image, generates a holographic optically varying image by a process of diffraction of...
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8164810 |
Security devices incorporating optically variable adhesive
A structure for providing an optical effect includes first and second substrates hot stamped together by an adhesive. The adhesive includes an energy activated binder having a plurality of...
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8156562 |
Information processing apparatus, image forming apparatus, image forming system, information processing method, and image forming method
An information processing apparatus determines whether an authentication portion on an image forming apparatus side can authenticate user authentication information input on the information...
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8139292 |
Structural body, a method for reading a structural color and/or diffraction light, and a truth/false discriminating method
Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale....
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8125697 |
Authentication of a laser shot in a holographic matrix
The authentication process comprises: a step of transferring a holographic matrix onto a base, a step of marking the holographic matrix by laser shot, in order to produce a digital code that cannot...
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8120996 |
Device and method for microstructuring a storage medium and storage medium comprising a microstructured region
A device providing for microstructuring a storage medium includes a radiation source for producing an at least partially coherent beam from electromagnetic radiation, a modulator provided with a...
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8113434 |
Passive electro-optical identification tags
Embodiments for electro-optical identification are disclosed.
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8107143 |
Optical device, labeled article, and optical kit
Increased is the variety of changes of an image in accordance with observation conditions displayed on an optical device including a solidified liquid crystal material. An optical device includes a...
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8081358 |
Laser marking hologram having a volume hologram with interference fringes using selective irradiation
The present invention is provided to enhance security of a volume hologram by recording therein individualized information such as information of character, numerical character, picture pattern,...
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8081359 |
Anti-counterfeit security and methods for its production and verification
The security object comprises a substrate, a surface structure and a hologram layer. A volume hologram is arranged in the hologram layer. The hologram layer is deformed in homogeneously by the...
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8077364 |
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...
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8059320 |
Method for production of documents with a hologram and a document with a hologram
In a method for production of documents with a hologram and a document with a hologram, wherein, in a first step, a hologram is exposed in a photographic film and, in a second step, the...
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8018636 |
Laminated holographic medium, recording apparatus/method, reproduction apparatus/method for the same and design method of laminated hologram medium
A medium 1, that is a laminated holographic medium of the present invention is composed of two or more core layers 2; 3 or more cladding layers 3 set so as to bind the core layers 2; one or more...
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7995256 |
Transparent card with hologram, and apparatus for recognizing transparent card with hologram
A main object of the present invention is to provide a transparent card with a hologram having the excellent design property and a high security property. The present invention achieves the object...
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7986459 |
Grid image and method for the production thereof
The present invention relates to a grating image (12) for depicting at least one unscreened halftone image having multiple brightness levels, the grating image exhibiting multiple grating fields...
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7982930 |
Preserved and enhanced holographic and optically variable devices and method for making the same
An optically variable device has a substrate with an optically variable relief and a coating on the optically variable relief. The coating is applied as a liquid dispersion including a plurality of...
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7943392 |
Discrimination medium, discrimination method, article to be discriminated, and discrimination apparatus
A discrimination medium cannot be easily falsified. Since the visibility of the discrimination medium is unique, the discrimination medium is superior in determination of the authenticity. The...
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7940436 |
Authenticity indicator
An authenticity indicator is difficult to be forged and has an authenticity that can be confirmed easily and accurately. The authenticity of the authenticity indicator can be checked by making...
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7923678 |
Sensing method including interrogation of a holographic sensor
A sensing method, which comprises subjecting a holographic sensor to an external physical interaction to which the sensor is sensitive, and observing a change in the holographic image.
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7920049 |
Registered 3-D optical thinfilm for remote identification
A system and method for determining encoded information borne by transportation modalities. The system includes substrates carried by the modalities and an optical interrogation device capable of...
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7909364 |
Indicator for indicating authenticity
An object of the present invention is to provide an authenticity indicator that cannot be easily forged, that is clearly distinguishable, and that can be elaborately designed. An authenticity...
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7907339 |
Metallised security element
The invention concerns a security element (11) in the form of a multi-layer film body, a security document having such a security element and a process for the production of such a security...
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7901630 |
Diffraction grating-based encoded microparticle assay stick
An assay stick 7 includes a transparent reaction vessel or tube 14 having one or more microbeads 8 disposed therein. The microbeads 8 have a plurality of unique identification digital codes based...
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7903308 |
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...
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7894112 |
Security element with a diffraction structure having subareas representing recognizable information
A security element, preferably for documents of value, which at least has one area with a diffraction structure, which under specific viewing conditions reconstructs a diffractive image. This area...
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7884983 |
Image display body and image formation method
An image display body in which a decorative effect is obtained more effectively by an optical diffraction structure. In an image display body, an optical diffraction structure portion constituted...
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7880943 |
Patterned optical structures with enhanced security feature
A security article is a substrate having a diffractive grating thereon, coated with a windowed high index layer and a color shifting coating visible through the window. The color shifting coating...
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7876481 |
Patterned optical structures with enhanced security feature
A security image and method for forming said image is disclosed wherein an image having a layer with a hologram therein has an additional layer of magnetically aligned flakes together forming an...
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7875338 |
Security protection of documents or products by affixing an optically active component for verification of authenticity
A component for authenticating a document or a product including a plastic film having at least one embossed surface, a metallization layer at least partially covering the embossed surface, the...
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7846520 |
Counterfeiting prevention label and method of manufacturing the same
A counterfeiting prevention label 1 has a label base 3 including a base sheet 31, and a volume hologram 2 including a volume hologram layer 22 and formed on the base sheet 31. The volume hologram 2...
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7839547 |
Optical fiber illumination device and inspection apparatus
An inspection apparatus includes a light source unit which irradiates illumination light onto a hologram of a medium from a predetermined direction at which diffraction light from the hologram is...
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7839546 |
Security device using parallax movement to view front and rear layers
A security device including a surface relief microstructure which, in response to incident radiation, replays a hologram viewable within a viewing zone, the hologram including at least a first...
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7835047 |
Bi-directional informational article within an optical variable devise
An informational article including a holographic film layer and certain additional ink receptive coating, high-opacity blocking, security printing, image receptive coating, ultraviolet reflected...
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7835050 |
Optical holographic device with a hologram optical element on an area smaller than an irradiation area, holographic image display device and head mounted display with a hologram optical element on an area smaller than an irradiation area
A hologram optical element is formed on a substrate so as to make an optical device. The hologram optical element is formed in an area smaller than an irradiation area of a beam for reproduction...
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7821691 |
Zero-order diffractive filter
A Zero-order diffractive filter comprising a first layer (1) with a periodic diffractive microstructure, forming a waveguide, and at least one adjacent second layer (2, 4, 5), wherein said first...
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7796333 |
Encoded microparticles and a method for fabricating
A method for fabricating microparticles. The method includes providing a removable substrate that has a photosensitive material. The substrate has a plurality of inner regions. Each inner region...
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7796311 |
Security device with multiple holographic or diffraction effect generating structures
A security device comprises first and second holographic or diffraction effect generating structures recorded in respective sets of substantially non-overlapping regions of a record medium. The...
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7782509 |
Security device
A security device comprises first zero order diffractive microstructure (1) on a substrate, a second zero order diffractive microstructure (2), and an intermediate light transmissive layer (4)...
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7744129 |
Areal security element and method for producing it
An areal security element for security papers, documents of value and the like, with at least two different areal security features (20, 22) disposed one above the other, which each are...
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7738150 |
Hologram methods for signature security, consolidated content, and an accelerometer
Techniques for identifying encoded digital data in a multichannel hologram are described. A method can include steps of reading a first channel of a multichannel hologram, extracting first content...
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7729026 |
Security device with metameric features using diffractive pigment flakes
A metameric optical structure is disclosed having first optical structures comprising diffractive flakes having diffractive structures thereon, and a second optical structures having...
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7729027 |
Image-formed object and method for producing the same
The present invention provides an image-formed object having security property improved, in which, even in the case where the image-formed object comprises a plurality of optical diffraction...
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7724408 |
Security system, especially for security 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...
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7719733 |
Diffractive security element comprising a half-tone picture
A diffractive security element has a half-tone image comprising diffractive structures in a reflection layer, which are embedded in a layer composite between a transparent embossing layer and a...
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7706037 |
Fabrication process for cholesteric liquid crystal media having a volume hologram
The invention provides a process capable of fabricating a cholesteric liquid crystal medium having a volume hologram with efficiency yet without recourse to complicated steps such as an alignment...
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7699351 |
Security document with a volume hologram forming a partial motif
A security object has a substrate (1) carrying a first motif (6) and mutually aligned thereto a second motif (7). The first motif (6) is formed by a volume hologram (8) and visible under a given...
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7684098 |
Optical security system using fourier plane encoding
A system for encrypting a set of data may include a signal source, and a first, second, third, and fourth subsystem. The first subsystem may receive a first signal from the signal source and...
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7679041 |
Electronic imaging device with photosensor arrays
An electronic imaging device is provided that includes a plurality of sensor elements, such as multiple photosensor arrays, wherein some of the sensor elements have a different numerical aperture...
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7680277 |
Optical media protection methods and apparatuses
Methods and apparatuses are provided for use with optical data storage media and related devices.
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7675662 |
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...
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