Author: EVG DELO – June24
Today, polymer refractive microlenses are the core of micro-optical modules. For small form factor modules, the manufacturing process is based on UV lens molding at wafer level. Whereas alternative lithography methods are limited in their ability to manufacture complex optical structures at wafer level, nanoimprint lithography (NIL) and lens molding are insensitive to shape and complexity, rendering them suitable for high-volume production. The highly parallel nature of these processes allows for added complexity without incurring additional manufacturing costs. This whitepaper presents an overview of the current status of lens molding technology and its associated materials.