文中介绍了应用于高光谱地球观测的CMOS有源图像传感器。该器件由全局曝光模式的像素组成512×256面阵,可实现450帧/s的帧频。全局曝光模式是由在光二极管外增加1个储存电容的方式实现的。该器件采用0.5μm标准CMOS工艺,满阱电子达...文中介绍了应用于高光谱地球观测的CMOS有源图像传感器。该器件由全局曝光模式的像素组成512×256面阵,可实现450帧/s的帧频。全局曝光模式是由在光二极管外增加1个储存电容的方式实现的。该器件采用0.5μm标准CMOS工艺,满阱电子达到140 000电子,瞬态噪声29电子,动态范围74 d B。采用该器件开发的高光谱成像仪的空间及频谱分辨率具有很高水平。展开更多
A low reset noise CMOS image sensor （CIS） based on column-level feedback reset is proposed. A feedback loop was formed through an amplifier and a switch. A prototype CMOS image sensor was developed with a 0.18μm CI...A low reset noise CMOS image sensor （CIS） based on column-level feedback reset is proposed. A feedback loop was formed through an amplifier and a switch. A prototype CMOS image sensor was developed with a 0.18μm CIS process. Through matching the noise bandwidth and the bandwidth of the amplifier, with the falling time period of the reset impulse 6μs, experimental results show the reset noise level can experience up to 25 dB reduction. The proposed CMOS image sensor meets the demand of applications in high speed security surveillance systems, especially in low illumination.展开更多
文摘文中介绍了应用于高光谱地球观测的CMOS有源图像传感器。该器件由全局曝光模式的像素组成512×256面阵,可实现450帧/s的帧频。全局曝光模式是由在光二极管外增加1个储存电容的方式实现的。该器件采用0.5μm标准CMOS工艺,满阱电子达到140 000电子,瞬态噪声29电子,动态范围74 d B。采用该器件开发的高光谱成像仪的空间及频谱分辨率具有很高水平。
基金Project supported by the National Natural Science Foundation of China(Nos.60806010,60976030)the Research Fund for the Doctoral Program of Higher Education of China(No.200800561111)
文摘A low reset noise CMOS image sensor （CIS） based on column-level feedback reset is proposed. A feedback loop was formed through an amplifier and a switch. A prototype CMOS image sensor was developed with a 0.18μm CIS process. Through matching the noise bandwidth and the bandwidth of the amplifier, with the falling time period of the reset impulse 6μs, experimental results show the reset noise level can experience up to 25 dB reduction. The proposed CMOS image sensor meets the demand of applications in high speed security surveillance systems, especially in low illumination.
