16 & 17 November
These two days are dedicated to general sessions with presentations from various international presenters. See the themes below.
Materials & Production Developments
AgiLite™: A Novel OVD Security Feature for Document Protection
SECTAGO’s AgilLiteTM technology is based on an innovative method to create a novel type of diffractive origination. Its creation involves unique mastering equipment, proprietary materials and software. The OVD image derives from a large number of diffractive surface elements which are designed to sophistically interact: Upon illumination the image is synthesized from individually generated light points which are directed towards the viewer’s eye.
The image appears bright-white and is customisable within a high degree of freedom, including the representation of numbers, figures, logos, etc. By tilt or rotation of the device the displayed image shows continuous, coordinated motion at high agility, additionally exhibiting a distinct 3D-effect. Hence, it combines the mobility and optical depth of lens-supported security features with the thin diffractive optic of hologram-type devices.
The gratings are generated by a mask-less lithographic process with pitch values ranging from <300nm to >5,000nm. Parameter settings are highly variable: pitch, depth and vector angle of the gratings are individually chosen and matched to each other to create the unique optical properties of the feature. Despite its complex origination, manufacturing of this OVD feature has been proven to be cost competitive by means of either standard UV-casting or hot- embossing processes.
The basic concept of this new origination technology and a selection of AgilLiteTM examples will be presented. Distinguishing well from other diffractive security features, they are optically attractive, easy to communicate and difficult to counterfeit, altogether making them well suited for the protection of high security documents.
Real Seamless Micro/Nanostructures
The application of micro/nanostructures on films and components is one of the most powerful technologies to constitute and improve optical, mechanical or biological functionalities. Industrial mass production via roll-to-roll replication (R2R) ensures the economic feasibility of new and innovative products. As the availability of micro/nanostructured imprinting moulds for R2R is limited to welded sleeves, all casted films will show the welding seamline as well. In order to avoid offcuts and enhance production efficiency, film producers aim to eliminate seam lines and push the production towards seamless structured film rolls. According to this demand, our recent work was focused on seamless micro/nanostructured imprinting sleeves. We developed mastering processes for cylindrical substrates, using laser interference lithography. Different structure types have been successfully mastered: Holographic diffusor structures for light management as well as diffractive ‘rainbow’ structures for decorative purposes. One very important result was achieved by generating real seamless sub-µm line grids (down to 200nm pitch), which have no beginning nor end, as they are continuous around the whole sleeve’s circumference. Besides the mastering, an electroforming process to copy the micro/nanostructures from photoresist masters to nickel sleeves was developed. The resulting sleeves have been successfully deployed in a roll-to-roll facility.
Printing Reflective Features
Alan Hodgson (UK)
Printing technology continues to build on the methods used in traditional secure documents. The technology is now moving into digital fabrication to produce functional features such as printed electronics and 3D devices. This knowledge could also be used to produce a new generation of reflective features for novel document security features.
This presentation will cover 3 main areas where printed reflective features are at various stages of development for application to secure documents.
- Metallic layers can now be produced on production scale as the backing to reflective optical features. There are now printing inks and technologies available using both real metal and metal appearance in a variety of colours.
- Printed optics continues to be an exciting new field and this presentation will show some of the drivers from other industries that are promoting advances in this field.
- Research continues in the printing of tuneable diffractive and reflective elements. This presentation will summarise the various potential options for this technology and where this may lead.
Much of this technology is under development outside of our industry and the presentation will highlight ways to access this knowledge.
Optoelectronic System for the Operational Control of Quality of Security Holograms in the Technological Process of Their Manufacture
Bauman Moscow State Technical University (Russia)
Hologram Embossing on Polycarbonate
This new technology can help documents producers to replicate onto polycarbonate material any optical security feature without the using of a special foil stamping material.
More flexibility and lower cost of production for single card or document are just some of the benefits that you can add with this new production process.
With a proprietary technology of embossing Diavy has create this machine to address specific customer needs.
With an easy set up you can run polycarbonate film with the same machine used to produce foils and patches for banknotes and other security printing substrates.
The machine is equipped with a state of the art drive and software both developed in-house that can help the operator to control all the process and guarantee a perfect result.
Innovations in Origination
E-beam Lithography Originations of Large Format Holographic Movies for Security Optical Variable Devices
Electron beam lithography (EBL) has become increasingly popular in the field of computer generated holograms for unsurpassed resolution and flexibility in generating 2D and 3D direct-write nano-structures. However, in comparison to laser or photolithography, direct write EBL systems are limited to slow write times and higher costs, often constraining the holographic images and effects to small, < 1 cm2 areas. Here an origination technique is presented for subwavelength nano-hole arrays that allows for stable and fast write times producing holographic OVD sizes > 5 cm2. This fast EBL origination technique is leveraged for fabricating multiple images encoded within the same optical variable device area at different diffraction angles is shown. This technique of multi-image / multi-directional encoding is used to originate full colour three-dimensional images with wide viewing angles up to 60 degrees, as well as cinema quality colour movie playback of up to 48 frames or equivalent to 2 two seconds of footage recorded at 24 frames-per-second. The originated structures are three dimensional nano-hole/pillar arrays which are suitable for standard holographic OVD foil manufacturing (roll to roll embossing) for security documents.
New Diffractive Effects Produced with Geola Originators
One-Step Process Fabrication of Holographic Features by Direct Laser Interference Patterning for Individualised Mass Production
TU Dresden (Germany)
Origination of holograms typically relies on the fabrication of metallic masters and their replication by embossing technologies, generally as a safety label. Using this approach, high quality and complex holograms can be produced, especially if large quantities are required. However, the standard processing is associated with high investment costs, relatively long processing times and thus a low degree of individualisation i. This characteristic does not satisfy today’s industry demand of individualised mass production as well as the possibility of direct treatments of parts to be protected against counterfeiting without labels
Direct Laser Interference Patterning (DLIP) has been identified as a promising technology for the fabrication of well-defined surface patterns on material surfaces without the need of special atmospheric conditions such as clean room or inert atmospheres. Due to the characteristics of the method, holographic elements such as surface holograms, diffraction-based security features and in-volume holograms can be applied directly in a one-step process on different parts. Furthermore, also the individualisation of conventional E-Beam holograms is possible, enabling new perspectives for individualised mass production processes. This study gives an overview about the DLIP technology for the fabrication of individualized holograms as well as different applications in the mentioned field.
70 Years of Holography: Past, Present & Future
Lessons from the Past to Enhance the Future
We’ve all heard the saying that if you don’t study history, you’re bound to repeat it. Appropriately, there is much to learn from holography’s 70-year history, some of it bears repeating; some of it should definitely be avoided. In this paper I will look at that history to identify the positives and the negatives and what we can learn from them to help ensure that holography has a strong future. My topics will include patents, the role of individuals and identifying “the next big thing”.
The History of Holography and Document Security Applications
Dennis Gabor invented holography in the late 1940s but it had to wait for its first practical applications until the early 1960s after the laser was invented and laser light could be used for recording high-quality holograms. This happened almost simultaneously in both the USA and the former USSR. Since that time, applications of holographic techniques have been found in science, industry, medicine and art. However, one of the most important applications from a business point of view has been applying holograms as optical variable devices (OVDs) to documents such as credit cards, ID cards, banknotes, travel documents, products, etc. It did not start until the early 1980s after that it was possible to mass-produce holograms using the embossing technique. Large quantities of rainbow holograms could then be produced with a very low price per copy, which made it cost effective to attach holograms to many types of documents. This paper describes how it started, with Steve Benton inventing the white-light viewable rainbow hologram, with Steve McGrew demonstrating the mass-production embossing technique, with American Banknote introducing the MasterCard embossed hologram, until today’s various techniques of OVDs, including kinegrams, dot-matrix and digital holograms, applied to various documents and banknotes as security measures.
Taking the Industry Forward - Insights into New OVDs
Internet Security Holograms - Future or Today's Reality?
Polish Holographics (Poland)
Securing Documents and Brands
Another Approach to Brand Protection Using Holograms
For the market of brand protection, Toppan Printing has established a new technology that enables machine confirmation of authenticity by simply using a smartphone to scan a specially-designed hologram.
Holograms are widely used as a counterfeit prevention tools that address such needs. In particular, holograms that enable visual confirmation of authenticity without the need for dedicated devices have been well-received because services using them are easy to roll out to consumers. However, although visual confirmation is possible when the authentic product and counterfeit are both close at hand and can be compared, this is rarely the case, and consumers find it difficult to accurately confirm the authenticity of counterfeits that look similar to the real thing.
With conventional holograms, the hologram pattern is recognised as a designed image. However, we have established a unique authentication algorithm that uses optical analysis technology. Authentication is possible even with holograms whose appearance seems to be the same.
We have now combined special hologram technology with high-accuracy optical analysis technology to establish a means of automatically confirming authenticity by scanning with a smartphone on which the dedicated application has been installed.
Furthermore, as an expansion of the service, it is proposed to be utilised as an introduction for reading the unique ID of the product.
With this technology, we hope to contribute to preventing losses caused by counterfeit and imitation products.
Multilevel Nanosteel Technology for Brand Protection and Decoration
CSEM SA (Switzerland)
For several years CSEM has been active in continuously improving its disruptive technology that allows the nano and microstructuring of steel tools of almost any size, geometry and material composition. CSEM’s technology is especially applied for high volume injection molding and embossing of plastics as well as for direct steel to metal embossing. One major aspect here is the outstanding durability and the very long lifetime of the steel masters compared to standard nickel shims. This year CSEM likes to present its newest technology demonstrator showing the latest achievements: very appealing decorative effects (switching, zoom / shrink and expand, 3D letter lens effect), covert laser readable images, micro- and nanoimages (“Matterhorn” and “Edelweiss”), as well as a Moiré-based two-layer revelator technology. The new Moiré-based technology allows the structural decoration and hologram-based security to be combined with another verification level by the use of mobile phones to read and verify the manufacturer’s code in the product. CSEM delivers everything in customer-supplied steel, down to a structural size of below 300nm. A service life of currently two million shots has been reported by one of our clients (industrial production still ongoing).
Serialised Holography for Brand Protection and Document Validation
Optrace leads in new generation security device manufacture.
Optrace technology is based on our patented self-processing photopolymer and exposure systems, enabling true volume holographic serialisation, including transmission and reflection holograms.
- Serialised holograms displaying easily verifiable, visual product information
- Mobile phone scannable QR codes
- Tax revenue stamps and document verification devices
- Covert devices interrogated by laser pointer for machine or human readable output
- Holographic signatures
- Holographic ID portraits
Manufacturing options include systems for large scale production and desktop systems for on-demand production at point of issue.
We will elaborate further in the presentation and be pleased to deal with all enquiries that delegates may have.
Holograms on Banknotes - Latest Statistics and Developments
Currency News (UK)
Empowering Brands Trough the Use of Holography and Other Optical Effects
The New Windowed Security feature and its Smartphone verification
Application of Surface Relief Structures and Holography
Fresnels, Flat Lenses & Faux Embossing – Sexy Nano Structures for Packaging
Wood & Associates (USA/China)
In this presentation, we will look at the growing commercial interest in refractive optical nano structures aimed at the global packaging industry. We will discuss the reasons for their appeal by brand owners coupled with the driving interest from the millennial demographic. Of particular note are the technical challenges of adapting an established holographic manufacturing industry to the requirements of the new structures. These range from mastering at the front end to deep structure replication in the middle through to final application by established players in the print and converting industries.
OptoClones of Russian State Treasures from the Moscow Kremlin Diamond Fund
Hellenic Institute of Holography (Greece)
ITMO University of St. Petersburg in cooperation with the Hellenic Institute of Holography (HiH) have been officially invited to create full-colour Denisyuk-type holographic OptoClones of selected Russian State Treasures belonging to the Diamond Fund of the Russian Federation. These selected artworks are considered not only an invaluable part of the national historic heritage of Russia but are also protected as ‘State Treasures’ due to their inherent value in terms of their content in precious minerals and metals. Some of the selected treasures are prominent exhibits from the Moscow Kremlin Museum; some will come out from the vaults of the Diamond Fund for the first time for the purpose of being holographically documented. The produced OptoClones will be subsequently used for exhibition by the owner of the treasures instead of the original artefacts and will be therefore delivered with individually incorporated HoLoFoS, the proprietary RGB LED-illuminants developed by HiH. The participants of the Holography Conference 2017 will be the first to learn of the project details and appreciate preliminary samples of the produced OptoClones. What better way to celebrate the 70th anniversary since the invention of Holography!
The Role of Holography in the Development of Solar Energy Applications
Ayalid M. Villamarín Villegas
Instituto Holografico Terrasun (Spain)
For more than 20 years, holography has been introduced in the world of solar energy, mainly in the design of devices used in photovoltaic, solar thermal, solar control, lighting, energy efficiency, among others. Although these applications have been successful, they have not been able to cross the laboratory barrier with the real world. Nowadays, with the growing interest in the use of renewable energies, together with the capacity to generate a mass production of high-quality holograms, the interest of holography for solar applications has increased, opening a new stage to the Holography in this sector.
Micro Mirrors: Diffraction-free Talents for Optically Variable Elements
In the presentation, the technical background of micro mirror technology will be explained together with its potential for optically variable security elements. Examples of different effects will be shown with samples, images and animations. Furthermore, aspects of security, aesthetics and manufacturing technology will be illuminated.
Close of Conference and Farewell Drinks