American Bank Note Holographics, Inc.

Lily O'Boyle

Kang S Lee

Miklos Palmasi

Anh Nguyen

Gilbert Colgate, Jr

Der-Kuam Kang

A method for producing a tamper evident security holographic label and overlaminate using UV casting techniques, and a security device so produced, comprising a clear protective layer; a thin layer of clear UV cured resin cast partly onto the protective layer following a designed pattern; another layer of UV cured resin bearing a cast holographic image, wherein the bond of the holographic image layer is stronger toward the surface of the protective layer than it is toward the surface of the pattern layer; a reflective layer strongly attached to the adjacent holographic layer; and an adhesive layer bonded to the reflective layer. Such a composite product when adhered to a base substrate via the adhesive layer will show no visible security feature to the unaided eye due to the thin nature of the clear security pattern. But upon delamination attempts, the ultra-thin holographic image layer will be broken at the weakest interfacial bond which is between the two UV cured resin surfaces, providing visible evidence of tampering in the form of a break pattern identical to that of the clear pattern layer.

Method of manufacturing tamper evident holographic devices

The object of the present invention is to effectively enhance card security in a system using identification card or the like. The card security system comprises a card issuing apparatus,and a card reader,. The card issuing apparatus,obtains data D and E by reading hologram,and barcode,on a card,. Data A, B and C are input from computer,. An encryption unit,generates check data EN based on data A-E. A magnetic writer,write the data A-E and EN on a magnetic stripe,. The card reader,reads data A-E and EN from the card,, generates check data based on the read data A-E, and determines whether or not the card is genuine by comparing the calculated check data with the read check data EN.

Card security system

A structure and method of operation of a fringe direct writing system to produce a hologram or the like. The apparatus is roughly classified into four parts: an illumination part; an image display and optical imaging part; an optically autofocusing part; and a two dimensional moveable stage part. The method of operation directly images a pattern, which is previously calculated by computer and displayed on the LCD panel, onto a recording material. This method affords the possibility to write a fringe pattern in a large region within a short period of time.

Method and apparatus for a fringe direct writing system

Tamper evident holographic devices and methods of manufacture

The present invention discloses a method of automatically decoding holographic signals by establishing an optical clock and performing subsequent optical signal analysis. In addition to a primary holographic image, the present invention comprises an optical image which generates a periodic pattern to create an optical clock for initializing the data reading device. By using a light source illuminating the optical image, diffraction signals are received by the detector(s). With a scanning (swiping) motion, signals of the optical clock and the primary image are read and the signals are processed and compared. The optical pattern can further be processed through an encryption algorithm and stored in a magnetic stripe, computer chip, hand held processor or a host computer for verification.

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Peekskill, NY, United States of America

Lily O'Boyle