349 / | HD | LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS |
19 | DF | PARTICULAR EXCITATION OF LIQUID CRYSTAL {6} |
24 | DF | .~ Optical excitation {1} |
25 | DF | .~.~ With photoconductive layer (e.g., spatial light modulator(SLMs)) {4} |
29 | .~.~.~ With particular light blocking layer for separating read and write lights |