Rapid fabrication of mini droplet lens array with tunable focal length

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2018,（12）
• 页码范围: 70-73
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201816.122201

摘要

A rapid and cost-effective method for fabricating mini lens arrays is proposed.The lenses are made of silicone oil droplets and filled inside a polydimethylsiloxane (PDMS) elastomer.The lens arrays of different initial focal lengths and apertures can be fabricated by using the droplets of different volumes.Due to good elastic behavior of PDMS,the droplet lenses can be flexibly deformed,and the focal length and numerical aperture can be tuned by applying an external force on the PDMS elastomer.Furthermore,an apparatus for focal length tuning is designed and employed in the imaging system.