Microlens Array Fabrication Method Aims to Reduce Device Costs

Though aspheric microlens arrays (AMLAs) play an important role in advanced optical sensing, communications, imaging, and other industrial and biomedical applications, the fabrication of the elements remains a challenge. Even as MLAs stepped into diverse emerging applications, including AR/VR display and beam shaping, it is difficult using traditional MLA fabrication approaches, such as the hot reflow, ink-jet, and self-assembly, to fabricate AMLAs directly with a desired arrangement and profile, which determines the AMLA’s optical performances.