NANOSTRUCTURED ACOUSTO-OPTIC DEVICE, AND OPTICAL SCANNER, LIGHT MODULATOR AND HOLOGRAPHIC DISPLAY APPARATUS USING THE NANOSTRUCTURED ACOUSTO-OPTIC DEVICE

摘要

PURPOSE: A nano structured acousto-optic device, an optical scanner with the same, a light modulator, and a holographic display device are provided to control a diffraction angle range of outputted light. CONSTITUTION: First media(11) and second media(12) are alternatively and repetitively arranged. The first and second media have different dielectric constants. A sound wave generator(15) applies a sound wave to the first and second media. At least one of the first and second media is made of an acousto-optic medium(30).