上海理工大学 光电信息与计算机工程学院, 上海 200093
为了提高成像品质,提出了一种新型液体透镜阵列镜头。先将油滴沉入弹性体底部形成具有可控焦距的单个液体平凸透镜,再通过唯一平台实验液体透镜阵列,制作液体透镜阵列。通过控制滴入硅胶基底的硅油液体体积大小,控制单个微透镜的折射面曲率和透镜焦距。通过位移平台,控制阵列中微透镜的排布和个数。透镜阵列制作方法简单且成本低,透镜抗挤压能力强,焦距可控,阵列规整,在制造过程中,可以控制镜头光圈和初始焦距,因此是一种实用性较高的透镜阵列。
液体透镜 焦距可控 聚二甲基硅氧烷 liquid lens focal length controllable polydimethylsiloxane(PDMS)
Author Affiliations
Abstract
Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
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.
220.0220 Optical design and fabrication Chinese Optics Letters
2018, 16(12): 122201
