Abstract: A cable tray is provided for supporting conductive cable and a system is provided to connect cable trays to create secure cable pathways to safely organize and support conductive cable. The system includes improved junctions for joinder of cable trays in any desired pre-formed shape that eliminates exposed sharp edges and allows for fast, easy installation. Various shaped connectors between adjacent cable trays provide secure, easy-to-install connections and maintain electrical conductivity between adjacent trays. A system for surface treating the cable trays renders the trays electrically non-conductive at desired portions of each cable tray, while leaving exposed certain portions of each tray. Mask blanks that fit the connectors and selected portions of the cable tray are used to expose electrically conductive portions of the cable trays during the treatment of the cable trays. Rollers are provided to facilitate drawing cables over the tray.

Abstract: A projection screen includes a substrate, a reflective layer having a first surface and an opposing second surface, and diffusion layer. The second surface of the reflective layer is attached (e.g., via an adhesive) to the substrate and the diffusion layer is attached (e.g., via an optically transparent adhesive) to the first surface of the reflective layer. The first surface of the reflective layer has an unpolished (e.g., matte) finish. The projection screen is preferably flexible and wound around a conventional roller to form a projection screen system. Alternatively, the projection screen may be attached to a rigid substrate. In one embodiment, the diffusion layer includes two surfaces, one of which is attached to the first surface of the reflective layer and the other of which is outward facing. At least the outward facing surface of the diffusion layer includes irregularities to achieve a desired screen directivity performance.

Abstract: A projection screen includes a substrate having at least a first surface, a reflective layer having a first surface and an opposing second surface, and diffusion layer having a first surface defined by a matte finish and an opposing second surface. The second surface of the reflective layer is attached (e.g., via an adhesive) to the first surface of the substrate and the second surface of the diffusion layer is attached (e.g., via an optically transparent adhesive) to the first surface of the reflective layer. The projection screen is preferably flexible and wound around a conventional roller to form a projection screen system. Alternatively, the projection screen may be attached to a rigid substrate. The second surface of the diffusion layer has a preferably smooth finish, but may include desired irregularities to achieve a desired screen directivity performance.

Abstract: A cable tray is provided for supporting conductive cable and a system is provided to connect cable trays to create secure cable pathways to safely organize and support conductive cable. The system includes improved junctions for joinder of cable trays in any desired pre-formed shape that eliminates exposed sharp edges and allows for fast, easy installation. Various shaped connectors between adjacent cable trays provide secure, easy-to-install connections and maintain electrical conductivity between adjacent trays. A system for surface treating the cable trays renders the trays electrically non-conductive at desired portions of each cable tray, while leaving exposed certain portions of each tray. Mask blanks that fit the connectors and selected portions of the cable tray are used to expose electrically conductive portions of the cable trays during the treatment of the cable trays. Rollers are provided to facilitate drawing cables over the tray.

Abstract: A projection screen includes a substrate having at least a first surface, a reflective layer having a first surface and an opposing second surface, and diffusion layer having a first surface defined by a matte finish and an opposing second surface. The second surface of the reflective layer is attached (e.g., via an adhesive) to the first surface of the substrate and the second surface of the diffusion layer is attached (e.g., via an optically transparent adhesive) to the first surface of the reflective layer. The projection screen is preferably flexible and wound around a conventional roller to form a projection screen system. Alternatively, the projection screen may be attached to a rigid substrate. The second surface of the diffusion layer has a preferably smooth finish, but may include desired irregularities to achieve a desired screen directivity performance.

Abstract: A projection screen comprising; a substrate having a generally flat forward surface; a diffusion layer formed of a plurality of generally equally spaced apart concave features forming micro lenses; a layer of reflective material deposited on a rearward facing surface of the diffusion layer; the diffusion layer laminated to the forward facing surface of the substrate so that the layer of reflective material is sandwiched therebetween.

Abstract: A projection screen comprising; a substrate having a generally flat forward surface; a diffusion layer formed of a plurality of generally equally spaced apart concave features forming micro lenses; a layer of reflective material deposited on a rearward facing surface of the diffusion layer; the diffusion layer laminated to the forward facing surface of the substrate so that the layer of reflective material is sandwiched therebetween.