Anti reflective structures are a very difficult thing to create but at the same time it is a technology that is in a great deal of demand and Nalux is working on providing the solution. Whenever you have an interface between two transparent materials and they have different indexes of refraction, then reflection at the interface becomes a problem and anti reflective structures can help. The traditional way to combat this problem so that the maximum amount of light gets transmitted is to apply an anti reflective coating to the optics. However, applying an anti reflective coating is a separate processing step that adds cost. The better solution is to add anti reflective structures to the surface of your optics so that you can maximize the amount of light transmitted through the optic without requiring a separate manufacturing step.
Anti reflective structures (sometimes called moth's eye structures) are typically standing cones that are significantly smaller than the wavelength being transmitted. It has been found that these anti reflective structures allow more light to be transmitted through an optic without affecting the optical performance of the optic (for example, focal length of a lens would be unaffected). The advantage of these anti reflective structures over anti reflective coatings is that they can be created during the same manufacturing step as the overall shape of the optic (usually but not always a lens) so in effect you get anti reflective properties for free. The difficulty with anti reflective structures is that they are such a small size that they are difficult to fabricate.
When it comes to anti reflective structures, Nalux has the advantage of having some of the finest equipment in the world for the fabrication of extremely small structures. By using devices like Focused Ion Beam equipment, Nalux can almost manipulate material layers that are only a couple of atoms thick. to make anti reflective structures This allows the fabrication of anti reflective structures into plastic injection molds allowing these structures to be mass produced in plastics. Another advantage of this type of shape is that not only is it good for anti reflective structures but they also have the property of being resistant to dirt, oils, and moisture. The impact of this is windows and covers that stay cleaner and shed water and oils easier.
Anti reflective structures are becoming more important in our daily lives and Nalux is right there helping to provide the solutions. Check out our web site and see what solutions we can offer you
NALUX NANO OPTICAL, INC.
65 E.State Street, Suit2000
Columbus, Ohio 43215
c/o Schneider Downs
"Lighting a path to the future with nano-optics."