Patent ID: 9575397
Date: 2017-02-21
CPC Classifications: G02B,G03B

Claim:
1. An optical member driving device, comprising: an optical member for changing an optical path, the optical member having a parallel flat plate shape; a driving mechanism having a movable portion controlled to move in a direction orthogonal to a surface of the optical member by a drive signal, the driving mechanism being disposed outside the optical member; a connecting member rotatably connecting an end of the optical member and the movable portion of the driving mechanism on two axes orthogonal to each other at a surface center of the optical member; a support portion, disposed between the end of the optical member and the movable portion of the driving mechanism, for rotatably pivoting the connecting member; and a controller configured to control the movable portion of the driving mechanism, wherein, when letting a position at which the support portion pivotally supports the connecting member be a fulcrum of a lever, a position at which the movable portion is connected to the connecting member be a point of effort of the lever, and a position at which the optical member is connected to the connecting member be a point of load of the lever, then, a ratio of a distance between the fulcrum and the point of effort of the lever to a distance between the fulcrum and the point of load is set to 1:3 to 3:1.