ZOOM LENS DRIVING MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide a small-sized zoom lens driving mechanism which has high productivity and high positioning precision. SOLUTION: A fixed lens 60 is arranged at one opening part of the center hole 31 of a spool 30 wound with coils 34 and 35 and two movable lenses 61 and 62 are arranged on a plunger 40 which reciprocally moves in the center hole 31 by being magnetized and demagnetized by the coils 34 and 35. The zoom lens driving mechanism switches the focal length through the reciprocal movement of the movable lenses 61 and 62. COPYRIGHT: (C)2005,JPO&NCIPI