US Patent 7508445 Binocucorder

A camcorder mounted on a binocular includes a periscope that receives incident light on the effective line-of-sight of the binocular and reflects the light onto the line-of-sight of the camcorder into image processing elements of the camcorder, the camcorder being operable in telephoto mode and the binocular having a wide angle field of view, whereby the binocular serves as the target acquisition and maintenance of centering means for the camcorder, thereby enabling easiest acquisition of a target and enabling distant subjects of particular interest to be recorded in largest image without loss of sight of the target when the camcorder is operated in telephoto mode.