Linear-logarithmic image sensor with low noise and no flickers

Shigehiro Miyatake; Masayuki Kusuda; Tsuyoshi Iwamoto; Tetsuya Katagiri; Koichi Kamon; Kazuchika Sato; Yasuaki Serita

doi:10.1117/12.711254

21 February 2007 Linear-logarithmic image sensor with low noise and no flickers

Shigehiro Miyatake, Masayuki Kusuda, Tsuyoshi Iwamoto, Tetsuya Katagiri, Koichi Kamon, Kazuchika Sato, Yasuaki Serita

Proceedings Volume 6501, Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII; 65010I (2007) https://doi.org/10.1117/12.711254
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

This paper proposes and demonstrates a linear-logarithmic image sensor that can operate in both the linear and logarithmic modes, and exhibits low noise and no flickers. Its pixel is composed of one buried-photodiode, five n-channel MOS transistors, two p-channel MOS transistors, and one capacitor. During the linear mode operation, the pixel behaves the same as the four-transistor one, offering a low dark current and low noise. Also, in the logarithmic mode, it operates in an integrating manner in contrast to the majority of logarithmic-response CMOS image sensors that operate in a continuous manner. Thus it has no flickers and can calibrate the fixed pattern noise using the reference level. A wide dynamic range of 190 dB has been confirmed with a 256 × 256-pixel image sensor employing this novel pixel architecture.

Citation Download Citation

Shigehiro Miyatake, Masayuki Kusuda, Tsuyoshi Iwamoto, Tetsuya Katagiri, Koichi Kamon, Kazuchika Sato, and Yasuaki Serita "Linear-logarithmic image sensor with low noise and no flickers", Proc. SPIE 6501, Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII, 65010I (21 February 2007); https://doi.org/10.1117/12.711254

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