A wide-dynamic-range CMOS image sensor with gating for night vision systems

Arthur Spivak, Alexander Belenky, Alexander Fish, Orly Yadid-Pecht

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This brief presents a novel concept for a global multishuttering CMOS image sensor with linear wide-dynamic-range (WDR) implementation for night vision systems. The proposed imager is synchronized with an external active pulsed light source and is suitable for surveillance, automotive, and military applications. The proposed imager provides a linear WDR by applying adaptive exposure time to each pixel according to the local intensity level of illumination. Each pixel has a size of 13.75 μm × 13.75 μm, consists of only eight transistors, dissipates 100 nW, and provides dynamic range expansion of up to 98 dB. System architecture and algorithm are described. Pixel structure and design are analyzed according to charge injection considerations and signal-to-noise ratio requirements. Sensor principle of operation is presented, and simulation and experimental results for the proof of the concept are shown.

Original languageEnglish
Article number5719162
Pages (from-to)85-89
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume58
Issue number2
DOIs
StatePublished - Feb 2011
Externally publishedYes

Keywords

  • CMOS image sensors
  • gated vision
  • global shutter
  • night vision
  • wide dynamic range

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