A tunable liquid lens with extended depth of focus

Author

Kang, Jingran ; Zhou, Guangya ; Yu, Hongbin ; Chau, Fook Siong ; Chen, Haiqing

Author_Institution

Dept. of Mech. Eng., Nat. Univ. of Singapore, Singapore, Singapore

fYear

2010

Firstpage

89

Lastpage

90

Abstract

A liquid tunable lens with extended depth of focus (DOF) is presented. By integrating a rotational symmetric quartic function (QF) phase plate into the liquid lens´ cavity, the lens can achieve higher tolerance to the defocus aberration. The liquid lens was fabricated through a convenient and low-cost process that combined single-point diamond turning (SPDT) with soft lithography using polydimethylsiloxane (PDMS). Experimental and theoretical results are in good agreement. Both focal length tunability and extended DOF have been demonstrated with the proposed liquid lens.

Keywords

aberrations; lenses; optical fabrication; optical focusing; optical retarders; optical tuning; soft lithography; turning (machining); DOF; defocus aberration; extended depth of focus; focal length tunability; liquid lens; phase plate; polydimethylsiloxane; soft lithography; symmetric quartic function; Biomembranes; Cavity resonators; Charge coupled devices; Fabrication; Lenses; Optimized production technology; Soft lithography;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical MEMS and Nanophotonics (OPT MEMS), 2010 International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4244-8926-8

Electronic_ISBN

978-1-4244-8925-1

Type

conf

DOI

10.1109/OMEMS.2010.5672171

Filename

5672171