A daylight redirecting window film having a layered structure with a total thickness of less than one millimeter and having a first optically transmissive film, a second optically transmissive film approximately coextensive with the first optically transmissive film, an intermediate layer of a relatively soft optically transmissive material disposed between the first and second optically transmissive films, a parallel array of linear three-dimensional structures formed in a space between the first and second optically transmissive films, a layer of an optically transmissive adhesive coating a surface of the first optically transmissive film, and a two-dimensional pattern of light scattering surface microstructures formed in an outer surface of the second optically transmissive film. The parallel array of linear three-dimensional structures defines a parallel array of linear channels, and each of the linear three-dimensional structures has a total internal reflection wall extending transversely through a portion of the layered structure.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A window shade may include a shade, a sliding base, a weight track, a first blocking unit, and two second blocking units. The shade has two mount bars respectively formed at an upper end and a lower end thereof, and the shade is connected to the sliding base and the weight track through the two mount bars. The position of the sliding base is limited by the first blocking unit while the second blocking units are configured to limit the position of the weight track. With the first blocking unit and the two second blocking units, the shade can be replaced easily, and also the structural stability of the window shade is improved.

A cutting machine for window coverings is disclosed, which includes a worktable, a first cutting device, and a caliper. An abutting member and at least one series of extending graduation marks are provided on a table surface of the worktable. The caliper includes at least one internal gauge point and at least one external gauge point. By making the internal gauge point or the external gauge point of the caliper point at a scale value of the series of extending graduation marks which matches a height of a window opening, and by cutting the slats, the resultant slats are adapted to be installed to the window opening. In addition, a distance between a surface of the first cutting device which bears the slats and the table surface of the worktable is short, which makes the stacked slats can be cut in a substantially horizontal way.

A cutting machine for window coverings is disclosed, which includes a worktable, a first cutting device, and a caliper. An abutting member and at least one series of extending graduation marks are provided on a table surface of the worktable. The caliper includes at least one internal gauge point and at least one external gauge point. By making the internal gauge point or the external gauge point of the caliper point at a scale value of the series of extending graduation marks which matches a height of a window opening, and by cutting the slats, the resultant slats are adapted to be installed to the window opening. In addition, a distance between a surface of the first cutting device which bears the slats and the table surface of the worktable is short, which makes the stacked slats can be cut in a substantially horizontal way.

A modular shade includes at least one module that consists of a head rail unit, a foot rail unit, at least one intermediate rail unit, and a plurality of slat components. A top slat may be coupled to the head rail unit and the intermediate rail unit, and a bottom slat component may be coupled to the intermediate rail unit and the foot rail unit. Further, additional intermediate rail units and intermediate slat components may be added to the module to alter the shape and size of the module, and the module may be coupled to one or more additional modules to change the overall shape and size of the modular shade.

A headrail, which is included in an opening covering for a building opening, includes a frame and a fixing member. The frame, by definition, has a longitudinal axis, and the frame forms a first sub-frame and a second sub-frame in a direction along the longitudinal axis. The fixing member is optionally provided at the frame. When the fixing member is provided at the frame and bridge the first sub-frame and the second sub-frame at the same time, the first sub-frame and the second sub-frame are fixedly connected to each other in an aligned manner.