⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种400×200分辨率、600fps帧率、117.7dB动态范围的SPAD X射线探测器，采用无缝全局快门和时间编码外推计数器，解决了高动态范围X射线成像中的光强范围受限问题。在低光条件下直接计数光子，高光条件下通过外推计数扩展动态范围。
overflow, and hence an active reset is implemented with a reset transistor MAQ and the pixel supply voltage VPIX (=3.3V), a higher voltage than VEX. The buffered SPAD output φSPAD is fed to either counter A or B via input multiplexers. In low light conditions, the number of incident photons is captured based on φSPAD. In high light conditions, the multiplexer switches from φSPAD to φGCLK depending on the counter’s MSB, and the counter measures the extrapolated count based on φGCLK. Therefore, at the end of the TINT, the counter stores either photon counts or extrapolated counts, and the results are read out through 10b column lines. 1 2 X-ray detectors using hard X-rays (λ <0.1nm) are widely used in industrial and medical
Byungchoul Park1, Byungwook Ahn1, Hyun-Seung Choi2, Jinwoong Jeong3,
Kangmin Hwang3, Taewoo Kim3, Myung-Jae Lee2, Youngcheol Chae1 Yonsei University, Seoul, Korea Korea Institute of Science and Technology, Seoul, Korea 3 Rayence, Hwaseong, Korea counter’s