本研究主要在發展軟式可調焦鏡片之設計製作及所使用之聚二甲基矽氧烷(Polydimethylsiloxane, PDMS)軟式鏡片應力分析方法，預測軟式鏡片受力後的變化，包含壓力與變形量的關係以及壓力與軟式可調焦鏡片焦距變化之探討。為了建構符合實際情形的模擬分析，首先針對PDMS此彈性體材料進行機械與光學性質試驗，確定材料的楊氏係數、折射率與阿貝數後，進行軟式鏡片外型設計與鏡片調焦系統之機構設計；進而將材料參數和鏡片模型設計，使用有限元素分析軟體進行PDMS彈性體鏡片之應力分析，最後製作PDMS軟式鏡片搭配調焦系統，進行機械性質與光學性質檢測。由實驗結果發現，兩者之變形量誤差皆小於10 %內，由此可證明使用有限元素軟體模擬鏡片受力分析的可行性。軟式調焦系統壓力在0∼0.0125 MPa時，經由量測結果發現裝載平凸PDMS鏡片之鏡筒焦距變化量從63.46 mm變化至112.87 mm，同時實驗結果得知調焦鏡片的焦距變化量、變形量與鏡片的形狀、厚度有關；鏡片厚度越薄受力後之變形量越大，未來可將本研究發展之PDMS軟式鏡片應用於手機和相機鏡頭及仿生系統之視覺系統整合。

This research is to develop a stress analysis method for a novel zoom lens system with a soft polymer materials, PDMS(Polydimethyslsiloxane). This analysis method can predict deformation of elastmer and effective focal length (EFL) of soft PDMS lens after activating by pneumatic pressure. In order to construct the numerical stress analysis method, a detailed characterization of PDMS property is required. The research first focuses on the test of mechanical and optical properties of PDMS, including Young’s modulus, refractive index and Abbe number. Then the lens profile and soft zoom lens system can be designed. Deformation of PDMS lens can by analyzed by ANSYS with materials parameters and lens design model. Finally, the soft PDMS lens is fabricated and assembled into zoom system to measure the deformation and EFL. From experimental results, the error of deformation between simulation and experiments is below 15% and the EFL of soft zoom lens with PDMS plano-convex lens can change from 63.46 mm to 112.87mm as the pressure activated from 0 to 0.0125MPa. Future work can integrate the design of soft PDMS lens into the lens of mobile phones and cameras, as well as the imagine system of minis devices.

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