A 1200×900 6µm 450fps Geiger-Mode Vertical Avalanche Photodiodes CMOS Image Sensor for a 250m Time-of-Flight Ranging System Using Direct-IndirectMixed Frame Synthesis with Configurable-DepthResolution Down to 10cm

📋 论文概要

提出了一款1200×900分辨率、6μm像素间距、450fps帧率的Geiger模式垂直雪崩光电二极管CMOS图像传感器，用于实现250m距离的飞行时间测距系统。解决了现有SPAD传感器在长距离、高分辨率和高帧率下难以兼顾的难题。

💡 主要创新点

• 采用垂直雪崩光电二极管结构，在6μm小像素间距下实现Geiger模式工作，兼顾高分辨率和单光子灵敏度。
• 实现1200×900分辨率、450fps高帧率，支持250m远距离ToF测距，适用于汽车、监控和机器人等场景。

🏷 关键词

📄 原文摘要

Masato Takemoto, Yugo Nose, Hiroshi Koshida, Masaki Tamaru, Yuki Sugiura, Shigeru Saito, Shinzo Koyama, Mitsuyoshi Mori, Yutaka Hirose, Masayuki Sawada, Akihiro Odagawa, Tsuyoshi Tanaka Panasonic, Nagaokakyo, Japan Long-range (~250m) measurement systems with 3D resolution are highly anticipated for various applications such as automotive, surveillance and robotics systems. Direct time-of-flight (ToF) systems based on CMOS image sensors (CIS) with avalanche photodiodes with the Geiger-mode or single-photon avalanche diodes (SPAD) have been developed for these purposes. One difficulty is to meet practical requirements of long-range (~250m) measurement capability together with both lateral and depth resolution. Although indirect-ToF systems based on modulation and phase sensitive detection have fine depth resolution of the order of sub-cm, their full range is limited only to ~4m with standard Si-photodiodes

👥 作者与机构

Toru Okino, Shota Yamada, Yusuke Sakata, Shigetaka Kasuga,