| 摘要 |
<p>Compound liquid crystal devices are disclosed which amplify the often small or relatively small values of achievable directional shift in the effective optic axis given by the electroclinic or ferroelectric response. By carefully choosing the relative directions of the optic axes in the elements, the undesired chromatic properties can be made to partially cancel, giving the combination a much smaller chromaticity than the single cells. Examples of device implementations are bright reflective displays, modulators, spatial light modulators, beam switches and deflectors, and polarization or phaseshifting switches capable of switching between binary or triple states. Multiple element compounds can instead enhance the chromatic dependence, giving electrically timable colour filters, e.g. such that can be rapidly scanned between three positions in the CIE colour diagram.</p> |
