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该论文提出了一种CMOS能量收集与成像（EHI）有源像素传感器（APS）阵列，能够同时从入射光中收集能量并捕获视频图像，解决了低电压、低泄漏和自供电图像传感器的需求。实现的54×50像素阵列在1.2V供电下达到每帧每像素1.32pW的极低功耗。
–e.g. retinal prostheses [1]– necessitate very low-voltage, low-leakage, and energy-efficient image sensors that preferably produce their own power from ambient sources. A natural energy source for an image sensor that produces video images from impinging “sufficient” amount of light energy is the light itself. This in mind, a CMOS image sensor that can both produce power from light and capture video images on same focal plane is developed. The CMOS energy harvesting and imaging (EHI) active pixel sensor (APS) is incorporated in a 54×50 array along with low-power supporting electronics. It is designed in a mature 0.5µm 2P3M CMOS process that has only high-Vt transistors. A mixed-signal circuit design technique called supply boosting (SBT) [2,3] is utilized to overcome dynamic range and switch overdrive issues emanating from the low supply voltage of 1.2V and high-Vt. In SBT, the supply voltage is boosted locally once without compromising reliability margins of the process in use,
University of Idaho, Moscow, ID, Recent advances in video sensor networks and implantable biomedical devices