Abstract: A tarp system which can be quickly and easily deployed in place to cover one or more damaged portions on a roof or other structure, and removed for repair of the structure, may include a plurality of fastener assemblies connectable at corresponding fastener openings of a tarp to disconnectably secure the tarp to the structure. Each fastener assembly may include a pair of disks securable on opposite sides of the tarp, to sandwich the tarp. In an illustrative application, the tarp can be extended over one or more damaged portions in the structure. Each fastener assembly may be assembled to engage each corresponding fastener opening and the structure to secure the tarp on the structure. The fastener assemblies can be disassembled and removed from the structure and the respective fastener openings to facilitate removal of the tarp from the structure and repair of the structure.

Abstract: Described is a wide field of view, high resolution digital night vision system that uses transparent, repositionable eyepieces to present night vision information in the field of view of the user. The WNVS is advantageous in that it can be used in both night environments, but also in daytime environments by using clear eye pieces that allow the user to concurrently see the outside environment or allowing the eyepieces to be positioned out of the field of view of the user without significantly occluding the user's field of use during daytime use.

Abstract: The present invention is a contoured backpan for a solar concentrator array. The backpan has depressions integrally formed in its bottom surface for seating solar concentrator modules. The depressions, in combination connecting toughs, provide a structure which is able to support an array of solar concentrators. Optional stiffening members may be attached to fee backpan to provide additional structural rigidity, as well as to support a front panel for the array.

Abstract: The present invention is a contoured backpan for a solar concentrator array. The backpan has depressions integrally formed in its bottom surface for seating solar concentrator modules. The depressions, in combination connecting toughs, provide a structure which is able to support an array of solar concentrators. Optional stiffening members may be attached to fee backpan to provide additional structural rigidity, as well as to support a front panel for the array.