Abstract: A virtual imaging system (10) that allows a user to view a virtual image of an object field is provided. The system includes an imaging subsystem (11) having at least one lens (14). The imaging subsystem is arranged such that its object field (13) is at or near its focal point, thereby positioning the virtual image at or near infinity. In one embodiment, the imaging subsystem further includes an image generator (15) located in the object field. The system further includes an eyebox spreader (16) that is arranged to receive the light transmitted from the imaging subsystem and to redirect the light to a user's eye (2). The eyebox spreader is adapted to effectively increase an eyebox “A” of the imaging subsystem to “B” and thus the size of the virtual image. In one embodiment, the eyebox spreader is formed of a Fresnel surface that defines an array of parallel, optically flat facets thereon.

Abstract: The present invention is a system that enables a plurality of external peripheral devices to be easily connected to a conventional personal computer, or other computing device. The system can include the computer, or can alternatively be configured as a hub. In either configuration, the system includes an arcuate-shaped interface surface, on a base. One end of the interface surface includes an upright chassis, which includes a plurality of bays. Rails extend longitudinally along the interface surface, toward each bay. An external peripheral device is slid over a rail, which provides attachment and stability to the device and aligns it with the bay. Each bay includes an alignment pin, a power connection, and a data connection. Adjacent to each rail is a latch for securing an external peripheral device in a bay. The top of the chassis includes a marking to provide a visual reference that aids in attaching an external peripheral device to a bay.