PROBLEM TO BE SOLVED: To provide an optical device which can exhibit a variety of optical characteristics, while preventing the device from being large-sized.SOLUTION: An optical device 40 includes: a first optical characteristics changing member 60 axially provided to a first axis member 61, having a first optical member 64 and which can be displaced at first and second static positions, in which the first axis member is polarized and magnetized in a predetermined first magnetization direction a second optical member 74 axially provided to a second axis member 71 having an axis coaxial with an axis of the first axis member with a predetermined angle with respect to the first optical characteristics changing member a second optical characteristics changing member 70 which can be displaced at the first and second static positions, in which the second axis member is polarized and magnetized in a second magnetization direction opposite to the first magnetization direction and an electromagnetic driving source 80 for displacing the first and second optical characteristics changing members to the mutually different first and second static positions by switching a magnetic pole of a magnetic field by an electromagnets 87, 88 which act on the first and second axis members.COPYRIGHT: (C)2016,JPO&INPIT【課題】 バリエーションに富んだ光学特性を実現することができ、大型化を防止した光学装置の提供。【解決手段】 光学装置40は、第1の軸部材61に軸着され、第1の光学部材64を有して、第1、第2の静止位置に変位自在であり、第1の軸部材が所定の第1の着磁方向に分極され着磁された第1の光学特性変更部材60と、第1の光学特性変更材に対して所定の角度を有して、軸心が第1の軸部材の軸心と同一軸上となる第2の軸部材71に軸着された第2の光学部材74を有し、第1、第2の静止位置に変位自在であり、第2の軸部材が第1の着磁方向と反対方向の第2の着磁方向に分極され着磁された第2の光学特性変更部材70と、第1、第2の軸部材に働く電磁石87,88による磁場の磁極の切り替えによって、第1、第2の光学特性変更部材をそれぞれ異なる第1、第2の静止位置に変位させる電磁駆動源80と、を具備している。【選択図】図3
