Novel Micro Lens with Tunable Astigmatism

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....

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Bibliographic Details
Main Authors: Sz-Yuan Lee, Hsi-Wen Tung, Wen-Chih Chen, Weileun Fang
Format: Conference Proceeding
Language:English
Subjects:
Adaptive optics
Apertures
Astigmatism
Heating
Lenses
MEMS
Optical refraction
Optical sensors
PDMS
Polymers
Silicon
Tunable circuits and devices
Tunable lens
Vision defects
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Summary: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.
ISSN:2159-547X
DOI:10.1109/SENSOR.2007.4300591