| 摘要 |
PURPOSE:To perform NOR operation between images by writing an image on the surface of electrooptic crystal by charges. CONSTITUTION:A voltage generating circuit 11 applies a voltage which is an odd multiple of a half-wavelength voltage or close to it between a dot type electrode 32 and a transparent electrode 32b, a write voltage is applied to a photoelectric surface 31, and an optical device irradiates the photoelectric surface 31 uniformly to charge the 1st surface 33a of the electrooptic crystal 33 uniformly. Then, the voltage which is an even multiple of the half-wavelength voltage or close to it is applied between the dot type electrode 32 and transparent electrode 32b, the write voltage is applied to the photoelectric surface, and the optical device forms a charge image corresponding to the 1st image Ix on the 1st surface 33a, thus writing the 2nd image Iy on the photoelectric surface by a similar method. The electrooptic crystal 33 is irradiated by a laser light source 4 to obtain the NOR result between images in light transmitted through a polarizer 10. |
