PROBLEM TO BE SOLVED: To provide an optical unit which enables the optical frame to be smoothly rotated with a small drive force as well as having a configuration capable of achieving downsizing.SOLUTION: An optical unit comprises: a rod-like member 43 rotatable in a circumferential direction C and made from a magnet polarized into two magnetic poles in a direction orthogonal to the axial direction an electromagnet 140 which includes two coil core heads 40a, 40b arranged axisymmetrically relative to the rod-like member 43 and giving magnetic force to the rod-like member 43, and which when supplied with electric power to make the two coil core heads 40a, 40b polarized differently with each other, rotates the rod-like member 43 by repulsive force or stops the rotation of the rod-like member 43 by attractive force and an optical frame 130 which movably supports the rod-like member 43 in the axial direction J of the rod-like member 43 while rotating integrally with the rod-like member 43 in the circumferential direction C.COPYRIGHT: (C)2016,JPO&INPIT【課題】光学枠を小さな駆動力にてスムーズに回動させることができるとともに、小型化を実現できる構成を具備する光学装置を提供する。【解決手段】周方向Cに回動自在であるとともに、軸方向と直交する方向において2つの磁極に分極された磁石から構成された棒状部材43と、棒状部材43に対して軸対象に設けられ棒状部材43に磁力を付与する2つのコイルコアヘッド40a、40bを有するとともに、電力が供給されることにより2つのコイルコアヘッド40a、40bが互いに異なる磁極となることにより、斥力により棒状部材43を回動させるまたは引力により棒状部材43の回動を停止させる電磁石140と、棒状部材43の軸方向Jにおいて棒状部材43を移動自在に支持するとともに、棒状部材43と周方向Cに一体的に回動する光学枠130と、を具備する。【選択図】図3
