CMOS 图像传感器是数字图像技术系统的核心器件, 是继CCD 图像传感器问世30 年后的又一产品。分析了CMOS 图像传感器的工作原理及其性能特点并与CCD 图像传感器结构、内部特性、工艺、成本等作了系统的比较。关键词: CMOS; 图像传感器; 数字相机Abstract :CMOS image sensor is the core of the digital imaging systems. It’s a new solid2statepickup element . Which was invented later 30 years than that of CCD image sensor. The principle and significant advantages of CMOS image sensor are analyzed. Also the performance of a CMOS image sensor is compared with that of CCD image sensor in term of configuration ,inner characteristics ,tech2 niques and cost .Keywords :CMOS ;image sensor ;digital camera