21 August 2009 Analysis of required shape of flexible sensor for different lens focus
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Abstract
The purpose of this study is to find the shape requirement of image sensors when catching the image to obtain a much clear image than the flat image sensor. The results are applied to an o-ring driven liquid filled lens. It was found that the image distortion of the liquid filled lens is inevitable. Therefore, it is necessary to design an curved image sensor which can compensate the image distortion to solve this problem. The shape of the image sensor can be predicted by computer simulation. The required shape of the image sensor can be obtained by deforming the PDMS (Polydimethylsiloxane) membrane. The deformation of PDMS membrane of lens and the image sensor film can be obtain by using ANSYS® software at variable internal pressure in the liquid filled lens. The experimental module is composed of a barrel, transparent liquid (De-ionized water), PDMS lens membrane, rigid ring of lens curvature control, adjustable accessories of lens curvature orientation, the image sensors which are constructed on PDMS film, rigid ring of sensor film curvature control, and adaptable accessories of sensor film variable curvature adjustment. The ring of sensor film and accessories are utilized for variable sensor film's curvature control. On the basis of lens curvature's modulation, the image sensor film tuning process makes the image sensors on the optimal plane.
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Dein Shaw, Shy-Pin Cuo, C. W. Lin, "Analysis of required shape of flexible sensor for different lens focus", Proc. SPIE 7429, Novel Optical Systems Design and Optimization XII, 74290K (21 August 2009); doi: 10.1117/12.823880; https://doi.org/10.1117/12.823880
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