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Article: A novel fabrication method for the mold insert of microlens arrays by hot embossing molding.
- Article from:
- Polymer Engineering and Science
- Article date:
- December 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 Society of Plastics Engineers, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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INTRODUCTION
In recent years, micro-optical products such as microlenses and microlens arrays have attracted significant interest for optical communication, optoelectronics and biomedical applications, including image capture systems, photosensors, and digital display. They are used for focusing light on detector arrays, optical fibers, sensors or for illumination in flat panel displays.
There have been several fabrication methods for microlenses or microlens arrays such as thermal reflow method [1-3], excimer laser ablation [4], gray-tone mask [5], ink-jet fabrication [6], hot embossing of plastic material on a microlens array mold made by focused ion ...