| 摘要 |
PURPOSE:To improve assembly by using a plane cam mechanism which has a projection wall formed in three dimensions for lens movement. CONSTITUTION:This device has the 2nd lens holding frame 34 and the 3rd lens holding frame 35 which move in an optical-axis direction, pins 51 and 52 as the 1st engaging member provided on the 2nd lens holding frame 34, and pins 53 and 54 as the 2nd engaging member provided on the 3rd lens holding frame 35. Further, this is equipped with the 1st projection wall 39 which engages with the 2nd engaging member and is arranged at right angles to the optical-axis direction on a plane parallel to the optical axis and movable nearly at right angles to the optical-axis direction and the 2nd projection wall 40 which engages the 2nd engaging member and is arranged at right angles to the optical-axis direction on a plane parallel to the optical-axis and nearly at right angles to the optical-axis direction. |
