Light controlling device and process for controlling light transmission
AssigneeNippon Sheet Glass Co., Ltd.
InventorsHiroaki Tada, Yasuhiro Saito, Masahiro Hirata, Masato Hyodo, Hideo Kawahara
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Abstract
A light controlling device comprising a pair of substrates, a viscoelastic or elastic dispersing medium containing fine particles aligned in an approximately constant direction, and a way for applying a shear stress to the viscoelastic or elastic material. The device can control light transmission in non-stage by applying a shear stress to the viscoelastic or elastic material to incline the direction of the alignment of particles with respect to the incident light.
Claims20
A light controlling device comprising a pair of substrates, a viscoelastic or elastic material containing fine particles interposed between said substrates and aligned in a first predetermined direction with respect to said substrates, and means for intermittently applying a shear stress to said viscoelastic or elastic material and aligning said particles in a second direction.
A process for controlling light transmission which comprises intermittently applying a shear stress to a viscoelastic or elastic material containing fine particles aligned in a generally constant first direction and aligning said particles in a second direction.
A light controlling device comprising a pair of substrates, a viscoelastic or elastic material containing fine particles aligned in a predetermined direction with respect to said substrates, and a means for applying a shear stress to said viscoelastic or elastic material,
- wherein said particles are at least one member selected from the group consisting of graphite, TiOx (1.ltoreq.x.ltoreq.2), TiOxNy (1.37.ltoreq.x+y.ltoreq.1.95, 0.15.ltoreq.y.ltoreq.0.92), mica covered with titanium oxide, mica covered with TiOx (1.ltoreq.x.ltoreq.2), mica covered with TiOxNy (1.37.ltoreq.x+y.ltoreq.1.95, 0.15.ltoreq.y.ltoreq.0.92), a metal-coated mica, glass flake covered with titanium oxide, glass flake covered with TiOx (1.ltoreq.x.ltoreq.2), glass flake covered with TiOxNy (1.37.ltoreq.x+y.ltoreq.1.95, 0.15.ltoreq.y.ltoreq.0.92), TiOxNy covered with silica (1.37.ltoreq.x+y.ltoreq.1.95, 0.15.ltoreq.x.ltoreq.0.92), a metal-coated glass flake, .gamma.-iron(III) oxide, a metal salt of titanic acid, iron, cobalt, magnetite, barium ferrite and chromium(IV) dioxide.
A light controlling device comprising a pair of substrates, a viscoelastic or elastic material containing fine particles aligned in a predetermined direction with respect to said substrates, and a means for applying a shear stress to said viscoelastic or elastic material,
- wherein at least one of said substrates has a layer of preventing deposition of fine particles, said layer being a layer of a material capable of decreasing the surface free energy between said substrate and a liquid suspension of fine particles solidifiable into said viscoelastic or elastic material.
Dependencies are inferred from the claim text.