ELECTRO-OPTICAL SUSPENDED PARTICLE CELL COMPRISING TWO KINDS OF ANISOMETRIC PARTICLES WITH DIFFERENT OPTICAL AND ELECTROMECHANICAL PROPERTIES

摘要

An electro-optical suspended particle cell comprises a liquid acting as a suspending medium. First particles (3) and second particles (4), which are anisometrically shaped, are dispersed in the liquid and have different optical properties. A driver is coupled between electrodes for generating an electrical field in the cell. The first particles (3) and the second particles (4) have at least one further different property to obtain different amounts of rotation of the first particles (3) and the second particles (4) as a function of a strength of the electrical field, or as a function of a duration the electrical field (E) is applied.