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Optically variable device mastering system, method of authenticating articles employing the same, and resultant articleOptically variable device mastering system, method of authenticating articles employing the same, and resultant article description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070178287, Optically variable device mastering system, method of authenticating articles employing the same, and resultant article. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION [0001]This application claims the priority of Provisional Application Ser. No. 60/763,427, filed Jan. 30, 2006, entitled "OPTICALLY VARIABLE DEVICE MASTERING SYSTEM, METHOD OF AUTHENTICATING ARTICLES EMPLOYING THE SAME, AND RESULTANT ARTICLE." BACKGROUND OF THE INVENTION [0002]1. Field of the Invention [0003]The invention relates generally to optically variable devices and, more particularly, to a system and method for mastering optically variable devices utilizing a laser beam recorder. The invention further relates to the authentication of articles, such as, for example, optical discs, by employing such a system and method, and to resultant articles. [0004]2. Background Information [0005]An optically variable device (OVD) is a device which creates a change or shift in appearance, such as, for example and without limitation, a change in color or shape, when observed from different angles. The evolution of the OVD stems largely from the search for a mechanism to resist counterfeiting of certain articles and products. Complexity of design, difficulty in creating the `master` OVD, and difficulty in altering the original design have evolved to make OVDs a successful tool for authenticating the article or a product from a counterfeit or "pass off." [0006]One product which has become increasingly popular and, therefore, increasingly susceptible to counterfeiting by thieves, is the optical disc, such as, for example, compact discs (CDs) and digital versatile discs (DVDs), which are used to store data including, for example, computer software, video data such as movies, and music. To deter counterfeiting of the optical discs many methods have been proposed and used to try and authenticate them. For example, N.C. Abraham's U.S. Pat. No. 5,452,282 discloses a method of integrating holographic elements into the same layer as the data that is recorded on the optical disc. See also, N.C. Abraham's U.S. Pat. Nos. 5,533,002 and 6,160,789. [0007]However, with the prevalence of holographic origination systems world-wide, it has now become much easier for counterfeiters to produce either real counterfeit copies, by using similar techniques to the legitimate optical disc providers, or "pass offs," which are copies made by using simpler techniques while attempting to simulate the authentic product. [0008]There is, therefore, room for improvement in systems and methods for mastering OVDs. [0009]There is further room for improvement in the authentication of articles and products, such as, for example, optical discs. SUMMARY OF THE INVENTION [0010]These needs and others are met by embodiments of the invention, which provide a system and associated method for mastering optically variable devices (OVDs) using a laser beam recorder (LBR). [0011]Generally, the method of mastering OVDs includes the steps of providing the LBR, introducing a substrate to the LBR, and exposing a portion of the substrate to the LBR. The mastering system generally includes the LBR which has a laser that emits a beam. The beam may be programmed or otherwise controlled (e.g., without limitation, modulated) using a processor or computer, in order to expose the substrate and create the desired optical effect. The exposure is then processed, typically by developing, to generate a master for the OVD. The OVD can then be replicated in order to provide authentic resultant products or articles such as, for example, optical discs. This subsequent processing may include, for example and without limitation, various electroforming steps to produce stampers, for example, in the form of nickel plates which can then be used for replication. [0012]In one embodiment of the invention, an optical image is designed using any known or suitable software program. The image may incorporate any known or suitable optical effect (e.g., without limitation, holograms, color effects, grating structures, 2D effects, 3D effects, animation, and transformation effects). The software translates the optical image into linear data suitable for the LBR which then exposes the data on a substrate such as, for example, a photoresist plate, a phase transition material or a nitro-cellulose lacquer, in order to form the OVD. The OVD may be simultaneously combined and/or interlaced with digital recorded data such as, for example, music or video data. The photoresist plate is then developed and processed to produce a master from which authentic articles can be replicated. In one example, authentic optical discs are injection molded to contain both the digital data and OVDs. Accordingly, a wide variety of products and articles can be authenticated in accordance with the invention by including any known or suitable optical effect or combination of optical effects. [0013]It is, therefore, an object of the invention to provide a system and method for authenticating articles, such as, for example and without limitation, optical discs, using a laser beam recorder (LBR) or an electron beam (e-beam) equivalent of the LBR, such as, for example, an e-beam recorder. [0014]It is another object of the invention to master optically variable devices (OVDs) using a LBR or e-beam recorder. [0015]It is a further object of the invention to provide authentic articles, such as optical discs, which resist counterfeiting. [0016]It is a still further object of the invention to combine optical images with digital data such as, for example, music and video data, in order to resist counterfeiting of the same. [0017]It is yet another object of the invention to replicate authenticated articles by injection molding both digital data and OVDs. [0018]It is another object of the invention to design an optical image using any known or suitable software program, and then translate the desired optical features to suitable layout data for execution by the LBR to create the OVD. [0019]It is a still further object of the invention to produce one or more optical effects, relatively simple diffractive gratings, two-dimensional (2D) optical images, three-dimensional (3D) images, and/or stereograms each of which may be animated or not, and full color or not. [0020]It is yet another object of the invention to provide an optical image that can animate (i.e., move), or morph or transform into another, different optical image when viewed from a predetermined angle. [0021]It is another object of the invention to provide an animated movie optical image. Continue reading about Optically variable device mastering system, method of authenticating articles employing the same, and resultant article... Full patent description for Optically variable device mastering system, method of authenticating articles employing the same, and resultant article Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Optically variable device mastering system, method of authenticating articles employing the same, and resultant article patent application. 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