PROBLEM TO BE SOLVED: To control an interval while keeping parallelism without deforming an optical substrate even when adjusting the inclination of the optical substrate.SOLUTION: A variable spectroscopic element 1 includes: a base member 2 two optical substrates 4a and 4b facing each other at an interval in an optical axis direction a plurality of actuators 4c which are disposed at an interval in a direction crossing an optical axis in parallel between the base member 2 and one optical substrate 4a and which move the two optical substrates 4a and 4b in the optical axis direction and connection members 8 comprising an elastic material for connecting the actuators 4c and one optical substrate 4a.COPYRIGHT: (C)2012,JPO&INPIT【課題】光学基板の傾きを調整する場合でも、光学基板を変形させることなく平行性を保ちながら間隔を制御する。【解決手段】ベース部材2と、光軸方向に間隔を空けて対向する2つの光学基板4a,4bと、ベース部材2と一方の光学基板4aとの間に並列に光軸に交差する方向に間隔をあけて配置され、2つの光学基板4a,4bを光軸方向に移動させる複数のアクチュエータ4cと、アクチュエータ4cと一方の光学基板4aとを接続する弾性材料からなる接続部材8とを備える可変分光素子1を提供する。【選択図】図1
