Fabricating low cost and high performance elastomer lenses using hanging droplets

WM Lee, A Upadhya, PJ Reece… - Biomedical optics …, 2014 - osapublishing.org
Existing methods for low cost lenses using parallel mold stamping and high temperature
reflow requires complex engineering controls to produce high quality lenses. These
manufacturing techniques rely on expensive equipment. In this paper, we propose a low
cost (< $0.01 per pc) flexible moldless lens fabrication method based on curing a hanging
transparent polydimethylsiloxane (PDMS) elastomer droplet on a curved substrate.
Additional deposition of hanging droplets in the same manner led to a substantial increase …