A light attenuator that provides transparent light states and absorbing dark states for use in selectively controlling light, especially for smart glass applications. The light attenuator includes abutting areas of attenuation and transparency that form a repeat pattern or a quasi-repeat pattern. The attenuating areas are visible when the light attenuator is in the light state, but the repeat pattern is sufficiently large that a viewer looks through the attenuator and sees no haze.

A window covering for natural illumination of building interiors by redirecting the incident daylight at angles that promote its deeper penetration into the interior space. The window covering comprises an optically transmissive, flexible polymeric sheet having a layered structure with a light diffusing output surface and a number of total internal reflection surfaces incorporated into its material. The total internal reflection surfaces are dimensioned such that the multi-layer sheet diffusely redirect at least a portion of light towards a direction which is generally not coincident with the incidence direction.

A motorized window treatment may include a roller tube, a covering material that is attached to the roller tube, and a motor drive unit configured to be located within the roller tube. The motor drive unit may include a motor drive shaft defining a motor drive shaft rotational axis in a longitudinal direction. The motor drive shaft may be configured to rotate the roller tube to adjust the covering material between a raised position and a lowered position. The motorized window treatment may be configured to adjust a visible light transmittance of the covering material by rotating the roller tube, for example, when the covering material is in a fixed position between the raised position and the lowered position.

Thin-film devices, for example, multi-zone electrochromic windows, and methods of manufacturing are described. In certain cases, a multi-zone electrochromic window comprises a monolithic EC device on a transparent substrate and two or more tinting zones, wherein the tinting zones are configured for independent operation.

Window controllers and methods for controlling tinting and other functions of tinting zones of multi-zone tintable windows and multiple tinting zones of a group of tintable windows.

A component having a first, optically transparent pane and a second optically transparent pane, the first pane and the second pane being spaced apart from one another at least in some areas by means of a space. The component further comprises a separating device which divides the space into a first space area and a second space area; an introduction device for introducing fog, e.g., a colored gas, or a colored liquid that changes the passage of light at least through the first space area, at least in the first space area; and a means for removing the fog, the liquid or the gas at least from the first space area. In addition, the component further comprises an illuminating device for illuminating at least the interior of the first space area and/or the separating device is movable.

The present invention relates to a roman shade curtain which can improve the atmosphere of a curtain and the interior design of a home as the curtain is unfolded or folded up in a stepwise manner like lace and, particularly, to a roman shade curtain having viewing parts which enable outdoor viewing and light transmission. The present invention implements a new type roman shade curtain comprising viewing parts formed at intervals and formed of materials such as mesh, and a sub-curtain for opening and closing of the viewing parts, the sub-curtain being able to selectively open and close the viewing parts, such that a user can view the outside or enable outside light to enter through the viewing parts, as necessary.

Disclosed are liquid crystal devices including at least two liquid crystal layers, at least one interstitial substrate separating the liquid crystal layers, and at least two alignment layers disposed on opposing surfaces of the interstitial substrate. Also disclosed are liquid crystal windows incorporating said liquid crystal devices.

A window for use on a structure has a first frame, a second frame and a fascia. The structure has a wall having an interior surface, an exterior surface, and an opening extending through the wall from the interior surface to the exterior surface. The opening has an upper edge, a lower edge, a first side, and a second side. The first frame contacts the interior surface of the wall and extends through the opening. The second frame is positioned below the opening and contacts the interior surface of the wall. The fascia is connected to the first frame and contacts the exterior surface of the wall.

Window controllers and methods for controlling tinting and other functions of tinting zones of multi-zone tintable windows and multiple tinting zones of a group of tintable windows.