| 摘要 |
A photosurface comprising a plurality of light sensitive pixels, wherein each pixel of the plurality of pixels comprises an electronic circuit, each of the circuits comprising: a light sensitive element that provides a current responsive to light incident thereon; at least one amplifier having an input and an output; a feedback capacitor having first and second terminals connected respectively to the input and output of the at least one amplifier by a plurality of switches, which switches are controllable to reverse the connections of the capacitor such that the second and first terminals are connected respectively to the input and output of the at least one amplifier respectively; and at least one additional switch that connects the light sensitive element to the input of the amplifier, wherein when the additional switch is closed, the pixel is on and current provided by the light sensitive element flows into the amplifier input. |
