SPATIAL LIGHT MODULATOR AND METHOD FOR DISPLAYING COMPUTER-GENERATED HOLOGRAM USING SAME

摘要

A spatial light modulator and a method for displaying a computer generated hologram using the spatial light modulator and configured for displaying a dynamic computer generated hologram in a large area are disclosed. The spatial light modulator includes a plurality of MEMS units (20) arranged in an array, each of the MEMS units (20) corresponds to a pixel of a computer generated hologram and includes a sensing device (201), a light shielding portion (202) and a driving device (203). The sensing device (201) is configured for receiving position information that is obtained through Roman encoding a pixel corresponding to an MEMS unit including the sensing device (201) by a computer, the position information is position information of the light shielding portion (202) when a present frame is displayed, and the position information is transmitted to the driving device (203) by the sensing device (201). The driving device (203) is configured for controlling the light shielding portion (202) to move to a position corresponding to the position information of the light shielding portion (202) when the present frame is displayed in response to the received position information of the light shielding portion (202) when the present frame is displayed.