PROBLEM TO BE SOLVED: To provide a spectral image device using an etalon variable spectroscopic element where surface separation of an optical substrate does not vary during an exposure processing, so images having high spectrum accuracy can be acquired, and even if the images including a plurality of wavelengths are acquired by switching wavelength at a high speed, high wavelength resolution can be acquired.SOLUTION: The spectral image device includes a spectroscopic image generation part 3 for generating the images by using the spectroscopic element 1 that can vary the surface separation of the facing optical substrates so that the plurality of wavelengths are selectively transmitted, an imaging element 2, and a signal from the imaging element. The spectral image device includes: an input part 4 for inputting values of the plurality of wavelengths a surface separation control part 5 for controlling the surface separation of the optical substrates, based on the values of the wavelengths that are input and a start period control part 6 for instructing the surface separation control part to start executing the surface separation control between the optical substrates with respect to the following wavelengths that are targeted by the imaging element at an earlier specific period than when the exposure processing is executed with respect to the wavelength that is targeted by the imaging element at the time, by using the values of the plurality of wavelengths that are input.COPYRIGHT: (C)2013,JPO&INPIT【課題】露光処理の処理期間に光学基板の面間隔が変動せず、分光精度の高い画像を取得でき、高速で波長を切り替えて複数の波長からなる動画を取得しても、波長分解能が高いエタロン型の可変分光素子を用いた分光画像装置の提供。【解決手段】対向する光学基板の面間隔を可変として複数の波長を選択して透過させる可変分光素子1、撮像素子2、撮像素子からの信号を用いて画像を生成する分光画像生成部3を有する分光画像装置であって、複数の波長の値を入力するための入力部4、入力された波長の値に基づいて光学基板間の面間隔を制御する面間隔制御部5、入力された複数の波長の値を用いて面間隔制御部に対し、撮像素子による当該時点での対象となっている波長での露光処理期間の終了よりも早い所定時期に、撮像素子による次の対象となる波長に対する光学基板間の面間隔制御の開始を指示する開始時期制御部6を有する。【選択図】図1
