A mono-bloc catadioptric imaging lens comprising a solid body and a single-focal Maksutov type construction characterized by two refractive surfaces and two reflective surfaces wherein all surfaces are surfaces of revolution and wherein at least one surface is aspheric. A cover fits over the case body and has a top inner and outer edge. The method also includes accessing a user record, corresponding to a location, from a database of user records. In one embodiment, the composite sub-block is not stored, but rather used for computational purposes only. A center facility monitoringcontrolling subsystem reproducesdisplays a remote manipulation screen with the same contents as the on-site manipulation screen on a center display means, and controls the controlled facility by a center input means and remotely operatecontrol the controlled facility. In one embodiment, content may be obtained from a content source and modified based on the time limited content consumption information.