Matches 51 - 100 out of 255 < 1 2 3 4 5 6 >
Match Document Document Title
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 )...
6991260 Anti-counterfeiting see-through security feature using line patterns  
Patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The document is sufficiently transparent to allow see-through of the partial...
6987590 Patterned reflective optical structures  
An optical structure includes a light transmissive substrate having a surface relief pattern applied thereon, such as a hologram. A patterned layer of a reflective material is applied over portions...
6980336 Secured document, system for manufacturing same and system for reading this document  
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document...
6975765 Optically variable form birefringent structure and method and system and method for reading same  
An anticounterfeiting device comprising a surface relief structure having both diffractive and polarizing properties. Polarization of reflected light is controlled by the orientation and...
6975438 Optically variable surface pattern  
An optically variable surface pattern ( 1 ) contains relief structures ( 9.1; 9.2; 9.3 ) for producing at least two representations ( 2; 3; 4 ). The relief structures ( 9.1; 9.2; 9.3 ) have a...
6969578 Optical recording material  
An optical recording material which when exposed to actinic radiation produces a change in optical properties in the exposed regions, thereby providing a pattern of intelligence for storing and...
6954293 Data carrier having an optically variable element and methods for producing it  
The invention relates to a system comprising a series of data carriers, in particular identity cards, papers of value or the like, whereby the data carriers belonging to the system exhibit...
6927885 Label with a diffractive bar code and reading arrangement for such labels  
A label ( 1 ) made from a layer composite ( 15 ) includes at least one machine-readable diffractive bar code ( 3 ) consisting of narrow rectangular fields ( 4 ) occupied by the optically active...
6907124 Optical encryption and decryption method and system  
The invention relates to securing of information utilising optical imaging technologies and more specifically to phase encryption and decryption of images. An image is encrypted into a mask having...
6905755 Security document with raised intaglio printed image  
A security document or other device including a substrate ( 2 ), a smooth highly reflective layer ( 1 ) applied thereto and having a reflectivity of at least 60 gloss units, and a raised printed...
6903850 Security device  
A security device has a substrate formed with a surface relief defining an optically variable effect generating structure. At least two different reflection enhancing materials are provided on, or...
6882452 Patterned deposition of refractive layers for high security holograms  
This invention relates to the production of holographic devices. The holographic devices include a transparent high refractive coating that is applied selectively to provide additional security and...
6876473 Device with anti-counterfeiting diffractive structure  
An optical device for security and anti-counterfeit applications comprises a diffractive structure comprising a discrete region that in response to white light illumination generates an image by a...
6876472 Optical feature, in particular for documents of value, and a manufacturing method for the later individualization or data storage  
The invention relates to an optical feature, in particular for documents of value, having at least one at least dual-channel hologram for the holographic reconstruction of different images from...
6873443 Secured document, system for manufacturing same and system for reading this document  
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document...
6865001 System and method for encoding and decoding an image or document and document encoded thereby  
Holographic and diffractive security devices and documents carrying security devices as well as system, apparatus, and method for making and using security devices. Security devices provide at...
6845580 Reflective signage  
A sign comprising at least one support member and a body portion attached to the support member. The sign includes at least one reflective layer secured to the body portion. The sign includes at...
6844945 Hologram having authenticating information recorded therein  
The invention relates to a hologram having authenticating information recorded in such a way that the information is little viewable in an ordinary viewing state and so having high...
6841092 Anti-stokes fluorescent compositions and methods of use  
The present invention provides a secured document including a composition capable of anti-Stokes fluorescence containing an ion capable of absorption of electromagnetic radiation, an ion capable of...
6833956 Diffractive structure with interstitial elements  
A diffractive device has a surface relief structure which, when illuminated by a light source, generates one or more diffraction images which are observable from particular ranges of viewing angles...
6822769 Security device  
A security device includes a holographic optically variable effect generating structure having at least two discrete section. The sections that generate in response to white light illumination an...
6813048 Computer-generated hologram fabrication process, and hologram-recorded medium  
A computer-generated hologram fabrication process that enables a plurality of original images to be observed with master-slave relations Original images 11, 12 , a recording surface 20 and...
6806983 Apparatus and method for generating diffractive element using liquid crystal display  
Device, method, and system for recording diffractive high resolution text, pictorial, and/or other graphical information is provided which is particularly suited to recording information that would...
6806930 Optical security device  
In order to provide comprehensive and multi-purpose security, an optical security device is provided that comprises a substrate and at least a first optically structured layer. The optical security...
6801346 Diffractive safety element  
A security element is embedded in a layer composite of plastic material and has reflecting, optically variable surface patterns which can be visually recognized from predetermined observation...
6797366 Color shifting film articles  
Multilayer polymeric films and other optical bodies are provided which is useful in making colored mirrors and polarizers. The films are characterized by a change in color as a function of viewing...
6765704 Optical device  
An optical device for security and anti-counterfeit applications comprises a holographic diffractive structure ( 8 ) that generates a holographic optically variable image by diffraction that...
6761959 Diffractive surfaces with 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...
6756157 Volume hologram laminate and label for preparation of volume hologram laminate  
The present invention provides a volume hologram laminate by which a desirable reproduced wavelength is controlled and set optionally. The laminate has a first adhesive layer 3 , a volume hologram...
6753989 Recording surface relief microstructure  
A method of recording a surface relief microstructure in a record medium includes: i) causing a coherent reconstruction or replay beam to impinge on a holographic optical element assembly, the...
6747768 Information carrier with a hologram  
An information carrier includes information in the form of a hologram. In order to increase protection against copying and/or as a simple recognizable additional security feature of this...
6712399 Security device  
A security device comprises an optically variable effect generating structure ( 3,4 ). An obscuring layer ( 7 ) is located, in use, between the optically variable effect generating structure and a...
6706354 Volume hologram laminate, and label for preparation of volume hologram laminate  
There are provided a volume hologram laminate and a label for the preparation of a volume hologram laminate which, when kept in the pressed state, for example, during storage, is less likely to...
6700705 Structure arrangement having an optical-diffraction effect  
In order to improve a structure arrangement comprising a plurality of portions having a relief structure with an optical-diffraction effect, in particular for visually identifiable optical security...
6697179 Multi-layer hologram label  
A multi-layer hologram label includes a base layer having a surface on which a number of layers of adhesive materials are coated in a stacked manner. Each layer has a surface on which a pattern...
6674556 Image reconstructing apparatus, hologram forming method, hologram and hologram sheet  
In an image reconstructing apparatus 10 for reconstructing a hologram, when a lid 11 is nearly upright in relation to an apparatus body 12 , a light emitted from an illumination light source ...
RE38321 Transparent hologram seal  
A hologram forming layer, transparent evaporated layer, colored layer, adhesion anchor layer, and adhesive layer are sequentially laminated on the under surface of a base member. The laminated body...
6646771 Method for producing holographic optical element comprising primary and complementary holograms and associated methods for establishing authenticity of element used as security device  
A method is provided for producing a holographic optical element that is comprised of at least one primary hologram (as defined herein) and at least one complementary hologram (as defined herein)....
6628439 Genuineness detecting system and method for using genuineness detecting film  
An authenticity identifying film ( 10 ) has a reflective film ( 11 ) having a circularly polarized light selectivity to reflect at least only either of right-handed circularly polarized light and...
6618024 Holographic label with a radio frequency transponder  
A label for identifying an object includes a radio frequency transponder and a hologram. The radio frequency transponder has an antenna and a transponder circuit sandwiched between two layers of...
6605338 Security document or device having an intaglio contrast effect  
A security document or device having a substrate ( 2 ), a smooth highly reflective layer ( 1 ) applied to the substrate ( 2 ) and having a reflectivity of at least 60 gloss units, a raised printed...
6596360 Multilayer volume hologram, and label for multilayer volume hologram fabrication  
In the multilayer volume hologram 1 of the invention, the adhesive layer 5, volume hologram 6 and surface protective film 7 are laminated on the application member 2 in this order, and...
6552830 Holographic authentication element and document having holographic authentication element formed thereupon  
Device, method, and system for recording diffractive high resolution text, pictorial, and/or other graphical information is provided which is particularly suited to recording information that would...
6549309 Holography apparatus, method and product  
Holographic patterns are produced by utilizing a laser to illuminate a workpiece with an interference pattern, with sufficient laser power to ablate the workpiece where it is illuminated by the...
6534158 Color shifting film with patterned fluorescent and non-fluorescent colorants  
Disclosed are articles having a color shifting film and indicia located behind the color shifting film. The indicia include at least a first and second colored portion, the first portion including...
6506480 Color shifting film with a plurality of fluorescent colorants  
Disclosed are articles having a color shifting film and indicia located behind the color shifting film. At least a first and second colored portion are arranged as a foreground and background of...
Matches 51 - 100 out of 255 < 1 2 3 4 5 6 >