Novel Micro Lens with Tunable Astigmatism

Author

Lee, Sz-Yuan ; Tung, Hsi-Wen ; Chen, Wen-Chih ; Fang, Weileun

Author_Institution

Nat. Tsing Hua Univ., Hsinchu

fYear

2007

fDate

10-14 June 2007

Firstpage

2147

Lastpage

2150

Abstract

A novel astigmatism-tunable micro lens is reported in this paper. The device is based on a thermal-actuated tunable lens. Asymmetric boundary condition is further introduced on silicon conducting ring of lens to invoke asymmetric deformation of polymer lens as well as astigmatic change of PDMS-lens. The astigmatism is easily controlled via driving current. This study demonstrates the astigmatism variation by aspect ratio of anterior focus-spot, which changes from 9.34 to 1.12 while driving current increases from 0 mA to 70 mA. This astigmatism tuning approach paves the ways of MEMS-based aberration corrector and laser focus-spot shaper.

Keywords

microlenses; micromechanical devices; vision defects; MEMS-based aberration corrector; PDMS-lens; astigmatism-tunable micro lens; asymmetric boundary condition; current 0 mA to 7 mA; invoke asymmetric deformation; polymer lens; silicon conducting ring; thermal-actuated tunable lens; tunable astigmatism; Adaptive optics; Apertures; Heating; Lenses; Optical refraction; Optical sensors; Polymers; Silicon; Tunable circuits and devices; Vision defects; Astigmatism; MEMS; PDMS; Tunable lens;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International

Conference_Location

Lyon

Print_ISBN

1-4244-0842-3

Electronic_ISBN

1-4244-0842-3

Type

conf

DOI

10.1109/SENSOR.2007.4300591

Filename

4300591