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    • 1. 发明授权
    • High dynamic range analog X-ray photon counting
    • 高动态范围模拟X射线光子计数
    • US08198577B2
    • 2012-06-12
    • US12392637
    • 2009-02-25
    • Bart Dierickx
    • Bart Dierickx
    • G01J1/44H01J40/14H03F3/08
    • G01T1/17G01T1/247
    • A pixel for the detection of electromagnetic radiation or impinging high energy particles, in particular for detecting X-ray photons, including a radiation receptor for converting the electromagnetic radiation or impinging high energy particles into a radiation signal, a converter for converting the radiation signal into a pulse train, and an analog accumulator for accumulating the pulses of a pulse train to an analog signal for readout. The analog accumulator is adapted such that the analog signal is non-linearly proportional to the pulse count. Such non-linear analog accumulator has the advantage of an large dynamic range.
    • 用于检测电磁辐射或冲击高能粒子的像素,特别是用于检测X射线光子,包括用于将电磁辐射转换或将高能粒子撞击到辐射信号中的辐射接收器,用于将辐射信号转换成 脉冲串和模拟累加器,用于将脉冲串的脉冲累加到模拟信号用于读出。 模拟累加器适于使得模拟信号与脉冲计数成非线性比例。 这种非线性模拟累加器具有动态范围大的优点。
    • 9. 发明授权
    • CMOS circuit for sensor with reduced read noise
    • 传感器的CMOS电路具有降低的读取噪声
    • US08969780B2
    • 2015-03-03
    • US13524542
    • 2012-06-15
    • Benoit Dupont
    • Benoit Dupont
    • H01L27/00
    • H04N5/37457H01L27/14641H04N5/3743
    • A CMOS image sensor having one or more pixels, e.g. in an array, whereby each of the pixels having two or more sub-pixel elements for generating charge according to incident light intensity as well as a common charge sensitive device such as an amplifier coupled to two or more sub-pixel elements of a respective pixel. Charges generated by the two or more sub-pixel elements are added and integrated over respective integration time periods, to provide a signal representing the integrated charges. The circuit can be configured so that the two or more sub-pixel elements have different integration time periods. By combining charges at the charge sensitive device rather than combining outputs of multiple such devices, the amount of read noise can be reduced.
    • 具有一个或多个像素的CMOS图像传感器。 其中每个像素具有用于根据入射光强度产生电荷的两个或更多个子像素元件,以及公共电荷敏感器件,例如耦合到相应像素的两个或更多个子像素元件的放大器 。 由两个或多个子像素元件产生的电荷在相应的积分时间周期上相加并积分,以提供表示积分电荷的信号。 电路可以被配置为使得两个或更多个子像素元件具有不同的积分时间段。 通过在电荷敏感器件上组合电荷而不是组合多个这样的器件的输出,可以减少读取噪声的量。