Abstract: A shared output visible imager pixel array combines a high optical fill factor with low read noise. A relatively small group of pixels are connected to a relatively short common bus line. An amplifier located in close proximity with the pixels is connected to the common bus line and shared among the pixels. By reducing the amount of amplifier circuitry associated with each pixel, the optical fill factor is increased. Also, since the bus line is relatively short, the bus capacitance is much lower relative to the traditional passive-pixel designs. On average, the transistor count per pixel can be less than two, for large arrays.