The reflective spatial light modulator includes a perovskite type electro-optic crystal having a relative dielectric constant of 1000 or more, a light input / output unit that is disposed on the input surface of the electro-optic crystal and has a first electrode that transmits the input light, A plurality of second electrodes disposed on the back surface of the electro-optic crystal, and a plurality of light reflecting portions that reflect input light toward the light input / output portion, and a plurality corresponding to each of the plurality of second electrodes in the light reflecting portion A drive circuit that inputs an electric signal to each of the plurality of drive electrodes and applies an electric field between the first electrode and the second electrode, a plurality of second electrodes, and a plurality of second electrodes An electrode connecting portion having a plurality of bumps arranged so as to be electrically connected to a plurality of drive electrodes corresponding to the electrodes.
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