• Semiconductor Optoelectronics
  • Vol. 43, Issue 4, 760 (2022)
LIU Yeqi*, LIU Geyang, and ZHU Xiaoxiao
Author Affiliations
  • [in Chinese]
  • show less
    DOI: 10.16818/j.issn1001-5868.2021110502 Cite this Article
    LIU Yeqi, LIU Geyang, ZHU Xiaoxiao. A Dynamic Range Expansion Method for Day Night Compatible CMOS Image Sensor[J]. Semiconductor Optoelectronics, 2022, 43(4): 760 Copy Citation Text show less

    Abstract

    In order to improve the dynamic range of CMOS image sensor and apply it to day night compatible imaging, a new dynamic range expansion method is proposed in this paper. In this method, multiple reset barriers are set in the pixel to prolong the saturation time of photodiode in the exposure process. At the same time, by switching the pixel integral capacitance in different imaging environments, the response sensitivity of low light level imaging and the full well capacity of high light level imaging are improved, so as to realize day night compatible high dynamic imaging. MATLAB simulation shows that this method can expand the dynamic range of traditional CMOS image sensor from 61dB to 102dB.
    LIU Yeqi, LIU Geyang, ZHU Xiaoxiao. A Dynamic Range Expansion Method for Day Night Compatible CMOS Image Sensor[J]. Semiconductor Optoelectronics, 2022, 43(4): 760
    Download Citation