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US07440195B2 Zoom lens system and imaging device having the same 有权
变焦镜头系统和成像装置具有相同的功能

Zoom lens system and imaging device having the same
摘要：
A zoom lens system for directing an optical image on an electric image sensor that includes a first lens unit disposed on a most object side and having a negative optical power, a second lens unit having a positive optical power, and a third lens unit including a most image side lens unit having at least a positive lens element and a negative lens element, wherein the following condition is satisfied: 3
摘要（中）：

一种变焦透镜系统，用于将光学图像引导到电子图像传感器上，该电子图像传感器包括设置在最物体侧的第一透镜单元和具有负光学功率的第二透镜单元，以及包括正光学功率的第三透镜单元 大多数图像侧透镜单元至少具有正透镜元件和负透镜元件，其中满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> 3 < fl / fw | <？in-line-formula description =“In-line Formulas”end =“tail”？>其中fl是最大像侧透镜单元的焦距，fw是变焦透镜的焦距 系统在最短焦距条件下。

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