IMpixel 65nm BSI 320MHz demodulated TOF Image sensor with 3μm global shutter pixels and analog binning

2018 IEEE International Solid - State Circuits Conference - (ISSCC) Pub Date : 2018-02-01 DOI:10.1109/ISSCC.2018.8310200

C. Bamji, S. Mehta, Barry Thompson, T. Elkhatib, S. Wurster, O. Akkaya, A. Payne, J. Godbaz, M. Fenton, V. Rajasekaran, Larry Prather, S. Nagaraja, Vishali Mogallapu, Dane Snow, Rich McCauley, Mustansir Mukadam, I. Agi, S. McCarthy, Zhanping Xu, Travis Perry, William Qian, V. Chan, P. Adepu, G. Ali, Muneeb Ahmed, Aditya Mukherjee, Sheethal Nayak, Dave Gampell, S. Acharya, Lou Kordus, Patrick O'Connor

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引用次数: 98

Abstract

The quest for accurate, high-resolution, low-power-consumption, and small-footprint 3D depth cameras has driven a rapid improvement in Continuous-Wave (CW) Time-of-Flight (ToF) technology. Commercially available 3D image acquisition techniques include Stereo Vision, Structured Light, and ToF. CW ToF imaging systems offer excellent mechanical robustness, no baseline requirement, high effective depth image resolution, low computational cost, and simultaneous IR ambient light invariant intensity capture (Active Brightness). In a CW ToF camera, light from an amplitude modulated light source is backscattered by objects in the camera's field of view, and the phase delay of the amplitude envelope is measured between the emitted and reflected light. This phase difference is translated into a distance value for each pixel in the imaging array.

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IMpixel 65nm BSI 320MHz解调TOF图像传感器，具有3μm全局快门像素和模拟分频

对精确、高分辨率、低功耗和小尺寸3D深度相机的追求推动了连续波(CW)飞行时间(ToF)技术的快速发展。商业上可用的3D图像采集技术包括立体视觉、结构光和ToF。连续波ToF成像系统具有出色的机械鲁棒性，无基线要求，有效深度图像分辨率高，计算成本低，同时具有红外环境光不变强度捕获(主动亮度)。在连续波ToF相机中，来自调幅光源的光被相机视场中的物体反向散射，并且测量在发射光和反射光之间的振幅包络的相位延迟。该相位差被转换成成像阵列中每个像素的距离值。

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2018 IEEE International Solid - State Circuits Conference - (ISSCC)

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