公式タイトルと情報はIP Exchange PlusとPremiumのユーザーのみが利用可能です。
特許 権利維持 PROBLEM TO BE SOLVED: To provide a device for measuring displacement for achieving moving amounts of XYZ axis directions and high precision and high resolution of a moving direction in a compact structure. SOLUTION: The device has a two-dimensional diffraction grating 1 being a measuring reference face and a sensor unit 2 detecting diffraction light.