Patent application number | Description | Published |
20090215620 | ENHANCED SECURITY OF OPTICAL ARTICLE - An optical article comprising a primary mark disposed on the optical article and a secondary mark disposed on the optical article in close proximity to the primary mark. The primary mark comprises a first optical-state change material and the secondary mark comprises a second optical-state change material. The optical article is transformed from a pre-activated state to an activated state when a localized authorized activation method is used that selectively activates the primary mark. The optical article is transformed from a pre-activated state to an deactivated state when a non-localized unauthorized activation method is used that activates the secondary mark along with the primary mark resulting in the second optical-state change material undergoing a reverse color change when compared to the first optical-state change material. An optical article with a single mark including multiple color change optical-state change material is also disclosed. Methods of covering and encapsulating the marks are also disclosed. | 08-27-2009 |
20090284374 | ACTIVATION SYSTEM AND METHOD FOR ACTIVATING AN OPTICAL ARTICLE - An equipment comprising a receptacle for receiving an optical article; a first set of electrical connectors configured to be in direct contact with a second set of electrical connectors disposed on the optical article, when the optical article is received by the receptacle; an activation device operably coupled with the first set of electrical connectors; wherein the activation device is configured to generate an activation signal which is transmitted to the second set of electrical connectors by the first set of electrical connectors, wherein an electrical device is configured to provide a power component to the optical article via the first set of electrical connectors and the second set of electrical connectors which are in direct contact. A system comprising the equipment is also provided. Also provided is a checkout device. | 11-19-2009 |
20090285074 | ENHANCED SECURITY OF OPTICAL ARTICLE - An optical article comprising a first file encoded on the optical article comprising data structure information; a second file encoded on the optical article comprising a backup of the first file; wherein at least one of the first file or the second file must be fully readable for the player to read the data on the optical article; and a mark disposed on at least a portion of the optical article where the first file is encoded and at least a portion of the optical article where the second file is encoded; wherein the mark comprises an optical state change material; wherein the optical state change material undergoes a change in its optical state when exposed to an activation signal selected from one or more of a laser, thermal energy, infrared rays, X-rays, gamma rays, microwaves, visible light, ultraviolet light, ultrasound waves, radio frequency waves, electrical energy, chemical energy, magnetic energy, and mechanical energy; wherein the optical article is transformed from a pre-activated state to an activated state when an authorized activation method is used; and wherein the optical article is transformed from a pre-activated state to an incorrectly activated state when an unauthorized activation method is used. | 11-19-2009 |
20090285075 | ENHANCED SECURITY OF OPTICAL ARTICLE - An optical article comprising a mark disposed on the optical article; wherein the mark comprises an optical state change material; wherein the optical state change material undergoes a change in its optical state when exposed to an activation signal selected from one or more of a laser, thermal energy, infrared rays, X-rays, gamma rays, microwaves, visible light, ultraviolet light, ultrasound waves, radio frequency waves, electrical energy, chemical energy, magnetic energy, and mechanical energy; wherein the optical article is transformed from a pre-activated state to an activated state when an authorized activation method is used; and wherein the optical article is transformed from a pre-activated state to an incorrectly activated state when an unauthorized activation method is used. A method and a system for changing the functionality of the optical article are also provided. | 11-19-2009 |
20090285083 | ACTIVATION SYSTEM AND METHOD FOR ACTIVATING AN OPTICAL ARTICLE - An optical article comprising a plurality of optically detectable marks disposed on a surface of the optical article; a removable electrical device disposed on the surface of the optical article; wherein the electrical device is operatively coupled to the optical article; and wherein the electrical device is configured to interact with an activation signal when brought in direct contact with a communication device that applies the activation signal to the electrical device. A removable electrical device is also provided. A system and a method for activation are also provided. | 11-19-2009 |
20100073167 | SECURITY TAG FOR OPTICAL MEDIA AND PROCESSES FOR FABRICATION AND ATTACHMENT - An activation system for optical media in one embodiment includes a tag having at least one pair of conductors with at least one heating element coupled to the conductors. The heating element is oriented proximate one or more activation regions on the optical media, and wherein the heating element activates the optical media. The tag in one embodiment is an elongate flexible tag material with a number of conductors that couple on one end to heating elements wherein the heating elements are disposed within a media case such that they are proximate activation regions on a media article. | 03-25-2010 |
20100234493 | THERMALLY RESPONSIVE INK AND COATING COMPOSITIONS - A thermally responsive ink composition consisting of at least one halochromic optical-state change material, at least one base, at least one solvent, and at least one binder material. The pH of the ink composition is such that the halochromic optical-state change material remains in its basic state until it is acted upon by a thermal stimulus. The ink composition is capable of transforming from a first optical state to a second optical state upon a change in pH caused by exposure to a thermal stimulus. A thermally responsive ink composition consisting of at least one quaternary onium salt of an halochromic optical-state change material, at least one solvent, and at least one binder material is also disclosed. Coating compositions prepared using these ink compositions and optical articles comprising these coating compositions are also disclosed. | 09-16-2010 |
20110080823 | DISC STRUCTURE FOR BIT-WISE HOLOGRAPHIC STORAGE - An optical article is provided. The optical article includes a first layer. The first layer includes an active holographic layer configured to store holographic data. The first layer has a first surface and a second surface. A second layer includes a low birefringence material. The second layer also has a first surface and a second surface. Guide grooves are present in any one of the first layer or the second layer. In certain embodiments, the article may further include a reflective layer, an anti-reflective layer, a barrier layer, and a combination thereof. | 04-07-2011 |
20110081602 | OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.1. The reactant comprises polyvinyl chlorocinnamate, polyvinyl methoxycinnamate, or a combination thereof. | 04-07-2011 |
20110240550 | BLOCK COPOLYMER MEMBRANES AND ASSOCIATED METHODS FOR MAKING THE SAME - A separation matrix comprises a porous surface layer; and a bulk porous support, wherein both the porous surface layer and the bulk porous support comprising a block copolymer. The block copolymer comprises A-B or A-B-A repeating units, wherein A and B at each occurrence are two different blocks of oligomer, or polymer. A structural unit of block A is derived from one or more atom transfer radical polymerization (ATRP)-active monomer or oligomer and a structural unit of block B is derived from a thermoplastic ATRP-active macro initiator. A poly dispersity index of the block copolymer is at least about 2. | 10-06-2011 |
20120147724 | OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.005. The non-linear sensitizer comprises a triarylmethane dye. | 06-14-2012 |
20120328973 | METHOD OF RECORDING DATA IN AN OPTICAL DATA STORAGE MEDIUM AND AN OPTICAL DATA STORAGE MEDIUM - In accordance with one aspect of the present invention, a method for recording holographic data in an optical data storage medium is provided. The method includes (i) providing an optical data storage medium including: (a) a thermoplastic polymer matrix, (b) a latent acid generator, (c) a non-linear sensitizer, and (d) a reactant including a latent chromophore. The method further includes (ii) irradiating a volume element of the optical data storage medium with an interference pattern, said interference pattern including an incident radiation having a wavelength and an intensity sufficient to cause upper triplet energy transfer from the non-linear sensitizer to the latent acid generator, thereby generating an acid, wherein the latent acid generator is substantially non-responsive to said incident radiation. The method furthermore includes (iii) reacting at least one protected chromophore with the acid generated to form at least one chromophore, thereby causing a refractive index change within the volume element; and (iv) producing within the irradiated volume element refractive index variations corresponding to the interference pattern, thereby producing an optically readable datum. An optical data storage medium is also provided. | 12-27-2012 |
20150050196 | COLORIMETRIC INDICATORS FOR USE IN MEDICAL DEVICES - A colorimetric time indicator configured to indicate time specificity is provided. The colorimetric time indicator includes a colorimetric layer configured to be operatively coupled to a disposable medical device. The colorimetric time indicator is configured to indicate the time specificity via one or more visual indicators upon exposure to one or more external stimuli. | 02-19-2015 |
20150053608 | POLYARYLNITRILE COPOLYMER MEMBRANES - A membrane including a polyarylnitrile copolymer is presented. The polyarylnitrile copolymer includes structural units having a formula (I) and at least one terminal group having a formula (II): | 02-26-2015 |