首页> 外文会议>Conference on Optical Design and Engineering; Sep 30-Oct 3, 2003; St.Etienne, France >Design of an autofocus lens for VGA 1/4 ' CCD and CMOS sensors
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Design of an autofocus lens for VGA 1/4 ' CCD and CMOS sensors

机译:VGA 1/4“ CCD和CMOS传感器自动对焦镜头的设计

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We present the design of a lens for CCD or CMOS sensors using a new generation of lenses with electrically controlled focal length. These new elements made out of liquids (a drop of oil in water) work according to the principle of electro-wetting: the spreading of a drop of water on an electrically insulating surface can be modified by creating an accumulation of charges at the base of the drop. The densities of the two liquid phases are matched in order to keep the phases in place whatever the position of the lens. This new lens can be used in small devices to achieve auto-focus camera modules. There are several ways to integrate our adaptive optic in a fixed camera module lens, classically made up of plastic lenses. We will discuss three different configurations for a VGA system with 4 mm focal length, f/3 aperture, 60?field. The optical resolution is excellent, for object distance going from 50 mm to infinity.
机译:我们介绍了使用具有电控焦距的新一代镜头为CCD或CMOS传感器设计的镜头。这些由液体(一滴油在水中)制成的新元素根据电润湿原理起作用:一滴水在电绝缘表面上的散布可以通过在基体的底部形成电荷积聚来改变。下降。匹配两个液相的密度,以便将相固定在适当的位置,无论镜片的位置如何。这种新型镜头可用于小型设备中,以实现自动对焦相机模块。有几种方法可以将自适应光学元件集成到固定的相机模块镜头中,该镜头通常由塑料镜头组成。我们将讨论具有4 mm焦距,f / 3光圈,60视场的VGA系统的三种不同配置。物镜距离从50 mm到无限远,光学分辨率极佳。

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