| 摘要 |
To eliminate the difficulty, encountered when an image is disturbed by hunting, of picking up a high-grade moving picture and a high-resolution still picture. A focusing device comprising a focal point signal detection circuit (4) for generating a focal point signal indicating a level of focusing, a focusing direction judging circuit (502) for generating, by using a generated focal point signal, focusing direction signals indicating whether a focal point adjusting lens (1a) that is moved at specified time intervals to adjust a focal point is on a distal side or a proximal side when viewed from a focusing position, a focusing direction memory (504) for storing focusing direction signals generated at specified time intervals, and a means including a lens controlled variable computing circuit (503) and a focusing proximity judging circuit (505) for controlling the movement of the focal point adjusting lens (1a) based on a specified number of the most recently stored focusing direction signals and under a specified rule. |
