| 摘要 |
PURPOSE:To attain high resolution and miniaturization by driving piezoelectric actuators placed at a right angle with each other supported by a transparent parallel plate provided between an object and a solid-state image pickup element by means of sinusoidal waves whose phases differ by 90 deg. so as to move the plate minutely. CONSTITUTION:A radiated light from an object 1 is collected by a condenser lens 2 and projected onto a 2-dimension solid-state image pickup element 5 via transparent parallel plates 11. The plates 11 are supported by bimorph type piezoelectric actuators 12-1, 12-2 placed at a right angle to each other. A sinusoidal wave signal generating circuit 15 while being controlled by a timing controller 13 generates sinusoidal waves whose phase differ by 90 deg. to drive the actuators 12-1, 12-2, which move the plate 11 minutely in horizontal and vertical directions. On the other hand, the controller 13 stores the timing signal to the image pickup element 5 in the timing deviated before and after the peak by 45 deg. synchronously with the sinusoidal wave signal and reads the signal in the other period. Thus, the picture element is interpolated and high resolution is obtained without increasing the number of picture elements and miniaturization is attained. |
