LumaChrome: Enhanced Banknote Security with LumaChrome Colour-Shifting Film
LumaChrome colour-shifting film has been employed in the banknote and government market space for more than two decades. Branded as an Optical Security Device (OSD), the technology was first developed by the bank of Canada in conjunction with The National Research Council of Canada.
LumaChrome – A Proven, Anti-counterfeiting Solution for Banknote Authentication, Govt. ID and High Security Documents
This paper introduces Nanotech’s colour shifting LumaChrome product that has been used to authenticate banknotes for over 20 years. LumaChrome colour shifting film changes from one distinct colour to another distinct colour when tilting the film yielding an intuitive and easy to use solution which is extremely difficult to replicate. Availability in multiple formats from a security patch for government ID cards to full thread insertion into banknotes, LumaChrome is a highly versatile and powerful tool for securing documents and products.
A Nanotechnology-based Platform for Next-generation Optically Variable Devices
This paper introduces Nanotech’s optically variable device (OVD) platform technologies, based on sub-wavelength nano-scale structures and their novel processing for high throughput manufacturing. The origination of nano-scale master shims for embossing and casting has been optimized for precision and throughput of large-scale shims. This new technique for originating OVDs creates distinctive, highly visible colours that are much more discernable than current holographic micro-scale grating-based structures, even in low-light environments.
Nanographic Display Technology based on Subwavelength Diffractive Structures
Nanotech’s nanographic display technology employs sub-wavelength nano-scale diffractive structures and proprietary algorithms to enable high impact visual designs, product authentication, and brand protection. The technology’s visual effects include RGB true colour (24 bit), high-contrast movement, on/off effects, and image switches; all using diffraction efficiencies approaching the theoretical maximum. Viewing angles up to 180 degrees along the horizontal axis and pixel resolutions up to 12,700 ppi have also been demonstrated.