3D-Stacked 1Megapixel Time-Gated SPAD Image Sensor with 2D Interactive Gating Network for Image Alignment-Free Sensor Fusion

著者: Kazuhiro Morimoto, N. Isoda, H. Sekine, Tomoya Sasago, Y. Maehashi, S. Mikajiri, Kenzo Tojima, M. Shinohara, A. Abdelghafar, Hiroyuki Tsuchiya, K. Inoue, S. Omodani, K. Chida, A. Ehara, J. Iwata, T. Itano, Yasushi Matsuno, K. Sakurai, T. Ichikawa - 2024 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) 2024 被引用: 8

We present a 5μm-pitch, 3D-BSI 1Mpixel time-gated SPAD image sensor with 2D interactive gating network, enabling image alignment-free sensor fusion. The SPAD image sensor operates at 1,310fps for global shutter 2D imaging, and event vision sensing with 0.76ms temporal resolution under 0.02lux. Range-gated imaging result demonstrates a feasibility of robust imaging under harsh environments. The proposed gating network architecture enables background suppression in 3D depth measurement under 50klux ambient light.