| 摘要 |
PURPOSE:To suppress smear phenomenon and to decrease noise by providing a means amplifying an electric charge by an incident light into a voltage or a current and a detection means obtaining a difference of outputs of an ampli fier means when a signal charge is given and/or not to an input section of the amplifier means. CONSTITUTION:When a light is made incident in photodiodes 11, 21, 31, and 41, a signal charge is stored in each photodiode corresponding to the incident luminous quantity. The signal charge is converted into a signal voltage or a signal current sequentially by amplifier means 19, 29, 39 and 49 and the result is outputted as a video signal from a means 5 to apply the correlation double sampling method and an output amplifier 9 via a signal line 4. Thus, the deterio ration in the S/N due to leakage of noise charge in the signal path from the photodiodes 11, 21, 31 and 41 to the output amplifier is suppressed remarkably. The smear phenomenon caused by the leaked noise charge caused by the inci dent light is also suppressed considerably.
|
