Large stroke actuators and mirror devices for ocular adaptive optics

Xingtao Wu; Hong Li; Li Yao; Haijiang Ou; Chaoyang Pang

doi:10.1117/12.905697

15 February 2012 Large stroke actuators and mirror devices for ocular adaptive optics

Xingtao Wu, Hong Li, Li Yao, Haijiang Ou, Chaoyang Pang

Proceedings Volume 8253, MEMS Adaptive Optics VI; 825308 (2012) https://doi.org/10.1117/12.905697
Event: SPIE MOEMS-MEMS, 2012, San Francisco, California, United States

Abstract

After laboratory studies have demonstrated that the DM-based adaptive optics ophthalmic instruments are promising for future clinical applications, the next step would be to further enhance the functionality of ocular adaptive optics for research and commercialize it for clinical applications. The first essential requirement is the stroke which should cover most wavefront errors of the eyes in clinical population, for which, we presented here design, modeling, and experimental performance of PMN-PT unimorph actuators suitable for generating large stroke up to 50μm per 1-mm pixel in order to cover wavefront correction for older adults and patients with diseased eyes. Clinical acceptance will also requires DMs to be low cost, have a small form factor, running low power, have satisfactory speed, and be an easy add-on for system integration, thus we further presented an effort of developing a high voltage amplifier (HVA) based application specific integrated circuits (ASIC) for driving the mirror actuators with significantly reduced power and system form factors.

Citation Download Citation

Xingtao Wu, Hong Li, Li Yao, Haijiang Ou, and Chaoyang Pang "Large stroke actuators and mirror devices for ocular adaptive optics", Proc. SPIE 8253, MEMS Adaptive Optics VI, 825308 (15 February 2012); https://doi.org/10.1117/12.905697

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