5 November 2010Optical design rules of a camera module with a liquid lens and principle of command for AF and OIS functions
Eric Simon, Bruno Berge, Franck Fillit, Hilario Gaton, Martin Guillet, Olivier Jacques-Sermet, Frédéric Laune, Julien Legrand, Mathieu Maillard, Nicolas Tallaron
Eric Simon,1 Bruno Berge,1 Franck Fillit,1 Hilario Gaton,1 Martin Guillet,1 Olivier Jacques-Sermet,1 Frédéric Laune,1 Julien Legrand,1 Mathieu Maillard,1 Nicolas Tallaron1
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We have developed a miniature liquid lens component based on electro-wetting. It is designed to be plugged on a fix
focus camera module lens to provide both optical image stabilization (OIS) and auto-focus (AF) functions without any
mobile mechanical parts. The OIS/AF liquid lens component features a conical shape supporting the liquid interface in
order to maintain a stable optical axis and a multi-electrode design able to induce an average tilt of the liquid interface
when a bias voltage is applied to the different electrodes. The miniature size of the OIS/AF liquid lens component is well
adapted to imaging applications with ¼ inch, 1/3 inch and possibly 1/2.5 inch sensor formats. We will present general
rules for the optical design with an OIS/AF liquid lens. In this context, we will describe a simple calculation, based on
the well known Maréchal criterion, to estimate the optical wave front error requirement of an optical component
positioned in the aperture stop plane of an imaging lens design to perform images with a pixel resolution quality. We will
also present the principle of command of a multi-electrode liquid lens in order to perform AF and OIS functions with an
optimal image quality.
Eric Simon,Bruno Berge,Franck Fillit,Hilario Gaton,Martin Guillet,Olivier Jacques-Sermet,Frédéric Laune,Julien Legrand,Mathieu Maillard, andNicolas Tallaron
"Optical design rules of a camera module with a liquid lens and principle of command for AF and OIS functions", Proc. SPIE 7849, Optical Design and Testing IV, 784903 (5 November 2010); https://doi.org/10.1117/12.871634
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Eric Simon, Bruno Berge, Franck Fillit, Hilario Gaton, Martin Guillet, Olivier Jacques-Sermet, Frédéric Laune, Julien Legrand, Mathieu Maillard, Nicolas Tallaron, "Optical design rules of a camera module with a liquid lens and principle of command for AF and OIS functions," Proc. SPIE 7849, Optical Design and Testing IV, 784903 (5 November 2010); https://doi.org/10.1117/12.871634