OPTICAL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical device capable of controlling not only an X ray but also a gamma ray.SOLUTION: An optical device includes: electron ray discharge means 11 that discharges at least two electron rays E1 and E2; and a substrate 20 that includes a surface 21 on which interference fringes S1 are formed by the electron rays discharged from the electron ray discharge means and controls a gamma ray G by the interference fringes.