| 摘要 |
PURPOSE:To make always a delay output and a non-delay output level coincident with each other, by comparing the level of a delay output and a non- delay output before synthesis and providing a gain control circuit taking its output as a control input and controlling the signal gain of the delay line or the non-delay line. CONSTITUTION:A light shield plate 2 is arranged in the vicinity of an image pickup plane of a solid-state image pickup element 1 and displaced along the image pickup plane of the element 1 by impressing a high voltage to a piezoelectric element 5, and the light shield state to a photoelectric converting picture element is inverted. Further, a memory 7 stores the image pickup output before displacement, reads out the storage content in synchronizing with the generation of the image pickup output after displacement and the readout output and the image pickup output after displacement are compared at a comparison circuit 9. The gain control circuit 8 controls the readout output or the image pickup output level after the displacement with the output of the circuit 9 so as to make the level of both the outputs coincident with each other. |
