| 摘要 |
PURPOSE:To improve the accuracy of a focul point position and to attain rapid positional determination to the focul point position by switching the step quantity of a focusing operation member by a rocking angle control means. CONSTITUTION:The coil 22 of the rocking angle control means 20 is energized by several origination completing signals, an armature 24 is sucked, and an engaging pawl 24 is rotated counterclockwise, and engaged at the middle of the rotation of a driving coil 11, whereby the rotation angle is controlled. By this control, a ratchet gear 31 is fed one by one cog by one stroke of an AF ratchet 15. Furthermore, a fixed pulse is sent and focusing operation is completed. At this time, the driving coil 11 continues the rocking movement by an input pulse, and an AF ling 30 steps forward to the focul point position. Thus, the accuracy of the focul point position can be improved. |
