A 256×128 3D-Stacked (45nm) SPAD FLASH LiDAR with 7-Level Coincidence Detection and Progressive Gating for 100m Range and 10klux Background Light

📋 论文概要

本文提出了一种基于45nm 3D堆叠技术的256×128 SPAD FLASH LiDAR，通过7级符合检测和渐进门控技术，实现了100m测距范围，同时解决了长距离、高分辨率和高帧率在强环境光下的矛盾需求。

💡 主要创新点

• 采用7级符合检测技术，有效抑制背景光子噪声，提高信噪比。
• 引入渐进门控技术，动态调整门控窗口，适应不同距离和背景光条件。
• 利用3D堆叠工艺将SPAD阵列与逻辑电路垂直集成，实现紧凑的256×128像素阵列。

🏷 关键词

📄 原文摘要

Augusto R. Ximenes4, Myung-Jae Lee5, Edoardo Charbon1 EPFL, Neuchâtel, Switzerland ADAPS Photonics, Shenzhen, China 3 Intuitive Surgical, Aubonne, Switzerland 4 Facebook, Redmond, WA 5 Korea Institute of Science and Technology, Seoul, Korea 1 2 3D vision is an increasingly important feature in many applications of consumer, automotive, industrial, and medical imaging. Long range, high depth resolution, high spatial resolution, and high frame rates, are often conflicting requirements and difficult to be simultaneously achieved, especially in extreme ambient light conditions. In order to address range and depth resolution, direct time-of-flight has emerged as a powerful technique to perform light detection and ranging (LiDAR), thanks to advances in lowjitter optical detectors, such as single-photon avalanche diodes (SPADs), and accurate time-to-digital converters (TDCs) [1-5]. High spatial resolution can be achieved using

👥 作者与机构

Preethi Padmanabhan1, Chao Zhang2, Marco Cazzaniga3, Baris Efe1,