Parts made from polymer materials (aka “plastics”) are often chosen for their low weight and styling freedom. They are widely used for automotive, general lighting and medical applications, enabling energy savings and cost effective production. Coatings on plastics require a special cleaning, a precise handling and a superior deposition process to provide excellent optical performance, adhesion and durability – a perfect match for our capabilities. Auer Lighting has been producing innovative coating solutions for professional applications for decades. Based on that in-depth expertise, we offer you our great competence also for the coating on plastics. Most polymer materials cannot resist the typical 200 °C temperatures used for the coating of glass, so our engineers have designed a low temperature deposition process, working at temperatures lower than 80 °C. By means of plasma impulse chemical vapor deposition (PICVD) and MicroDyn sputtering we can redefine plastics with an anti-reflex or dichroitic surface. Our magnetron sputtering system enables to coat plastic substrate with a metal film. In general, metal finishing is used to improve the performance of the product as well as to protect and enhance the appearance. Aluminum is an optimal material for highly reflective optical surfaces in the visible spectrum with up to R = 90%.
However, it is very fragile without a protective overcoat made of a dielectric material. SiO2 protected aluminum is our most popular mirror coating in the visible and near-infrared regions. The SiO2 top coat provides an abrasion-resistant surface, high durability and an oxidation barrier while maintaining the performance of the bare aluminum mirror. Furthermore, a special top coat can be designed to enhance the visible reflection (up to 95%) even further. Its name: “alu+”. The so-called enhanced aluminum meets the highest quality reflective surface requirements, as the overcoating is a unique, highly durable multilayer dielectric film.