METHOD AND APPARATUS FOR EXECUTING A HUMAN-MACHINE DIALOGUE IN THE FORM OF TWO-SIDED SPEECH AS BASED ON A MODULAR DIALOGUE STRUCTURE

摘要

A deflecting element (1) includes a first substrate (3) and a second substrate (5). The two substrates (3) and (5) enclose a liquid crystalline material (7) which is switchable. A surface (13) of one of the substrates (3) facing the liquid crystalline material (7) is provided with a grating structure (15). The other substrate (5) is provided with a plurality of microlenses (21) on a surface (23) facing the liquid crystalline material (7).