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US08193482B2 Negative-feedback avalanche photodetector-based focal-plane-array sensor 有权
基于负反馈雪崩光电探测器的焦平面阵列传感器

Negative-feedback avalanche photodetector-based focal-plane-array sensor
Abstract:
An imaging sensor having sensitivity at the single-photon level is disclosed. The sensor comprises an array of pixels, each of which comprises a negative-feedback avalanche diode and a read-out circuit that includes a counter. The counter keeps track of the number of photons detected by the diode during a given time period.
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