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首页> 外文期刊>Electronics Letters >Pixel design of pulsed CMOS image sensor for retinal prosthesis with digital photosensitivity control
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Pixel design of pulsed CMOS image sensor for retinal prosthesis with digital photosensitivity control

机译:具有数字光敏控制的视网膜假体脉冲CMOS图像传感器的像素设计

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摘要

A newly designed pulse frequency modulation photosensor for use in retinal prosthesis is proposed and demonstrated. The pixel converts the intensity of incident light into biphasic current pulses at frequencies suitable for the electrical stimulation of retinal neurons. Experimental results showed that the device was sensitive over a dynamic range of input light of about 120 dB, and that photosensitivity could be varied from 0 dB to around -40 dB.
机译:提出并演示了一种新设计的用于视网膜假体的脉冲频率调制光电传感器。像素以适合于视网膜神经元电刺激的频率将入射光的强度转换为双相电流脉冲。实验结果表明,该器件在大约120 dB的动态输入光范围内敏感,并且光敏度可以在0 dB到-40 dB之间变化。

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