Chongqing Optoelectronics Research Institute
A generalSefficient charge to voltage factor(CVF) testing scheme is proposed by analysing the principle of the photovoltaic conversion, charge transfer and charge output in CCD. In the scheme, the photosensitive zone of CCD transfers charge to the horizontal zone and the horizontal zone continuously output charge packets with a constant frequency by adding a DC bias on the photosensitive area of CCD and the continuously transfer driving sequential is added on the horizontal zone. Thus, the stable intensity response signal is output. CVF is calculated by relationship between the reset leakage current and output signal intensity. Then, a general testing device for different CCD devices is designed and it is applied on testing experiments. The result shows the proposed scheme inproves the testing efficiency, accuracy and stability of the CVF.