Circuit of detecting light, image sensor and electronic device using the same and method of detecting light based on the same

A circuit for detecting light, comprising:

• a photoelectric conversion circuit, a reset circuit, a voltage amplifying circuit, and a current amplifying circuit, wherein:
• an output end of the photoelectric conversion circuit, an output end of the reset circuit, and an input end of the voltage amplifying circuit are connected to a first node, and an output end of the voltage amplifying circuit and an input end of the current amplifying circuit are connected to a second node;
• the reset circuit is connected with a reset control signal line and a reset power end, and is configured to write a reset voltage provided by the reset power end to the first node in response to a control of a reset control signal provided by the reset control signal line;
• the photoelectric conversion circuit is configured to collect incident light and generate a corresponding electrical signal according to the collected incident light, to charge the first node;
• the voltage amplifying circuit is connected with a turn-on control signal line, and is configured to perform voltage amplification processing on an electrical signal at the first node and write the electrical signal after the voltage amplification processing to the second node through the output end of the voltage amplifying circuit, in response to a control of a turn-on control signal provided by the turn-on control signal line;
• and
• the current amplifying circuit is connected with the turn-on control signal line, and is configured to perform current amplification processing on the electrical signal at the second node and write the electrical signal after the current amplification processing to a signal reading line through an output end of the current amplifying circuit, in response to the control of the turn-on control signal.