Pixel design of pulsed CMOS image sensor for retinal prosthesis with digital photosensitivity control
Pixel design of pulsed CMOS image sensor for retinal prosthesis with digital photosensitivity control
复制标题
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
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Nunoshita
中科院分区：
文献类型：
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作者：
K. Kagawa;K. Isakari;T. Furumiya;A. Uehara;T. Tokuda;J. Ohta;M. Nunoshita
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。像素将入射光的强度转换成频率适合视网膜神经元电刺激的双相电流脉冲。实验结果表明，该器件在约 120 dB 的输入光动态范围内保持敏感，并且光敏度可在 0 dB 至 -40 dB 之间变化。
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.