The present invention includes a liquid crystal spatial light modulator 101, a liquid crystal layer 7 comprising liquid crystal molecules, and at least one photocell 456 on at least one side of the liquid crystal layer 7, Each photocell 456 includes a photosensitive layer 5 comprising electron-donating (D) molecules and electron accepting (A) molecules, each photocell 456 for spontaneous photovoltage under illumination. Is placed. Electron-donor molecules and electron accepting molecules are preferably mixed and preferably form an organic bulk heterojunction layer. The photosensitive layer 5 of each photocell 456 is preferably-electron conduction disposed for the transfer of electrons from the contacting photosensitive layer 5 which is easier than the transfer of electron holes from the contacting photosensitive layer 5 Layer 4, and an electron hole conducting layer 6 disposed for the transfer of electron holes from the contacting photosensitive layer 5, which is easier than the transfer of electrons from the contacting photosensitive layer 5 .
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