Applications of a transmissive twisting ball display

Details Applications of a transmissive twisting ball display Applications of a transmissive twisting ball display

1995-12-15

1998-01-13

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

345107, 427214, 364 4, 364 8, 364 15, G02B 2600

Patent

active

057085250

ABSTRACT:
A multisegmented ball for an electrical twisting ball display device made up of spheroidal balls rotatably disposed in an elastomer substrate. The ball is composed of segments arrayed substantially parallel to one another. Each segment is adjacent to at least one other segment and to no more than two other segments, adjacent segments being adjoined to one another at substantially planar interfaces. Each segment has an optical modulation characteristic, the optical modulation characteristics of adjacent segments being different from one another. The segments of the ball include a first exterior segment, a second exterior segment, and a transparent interior segment. The ball has an anisotropy for providing an electrical dipole moment, the electrical dipole moment rendering the ball electrically responsive such that when the ball is rotatably disposed in a nonoscillating electric field while the electrical dipole moment of the ball is provided, the ball tends to rotate to an orientation in which the electrical dipole moment aligns with the field. Also disclosed are: a material made up of a substrate in which are disposed the aforementioned balls; an apparatus made up of a piece of this material, together with electrodes to facilitate a rotation of balls rotatably disposed therein; and a method for using this apparatus.

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