a coupling prism for optically multiplexing plural single-channel images each created by capturing a respective view to thereby form a multi-channel image, the coupling prism comprising a plurality of diagonally-reflective (DR) prisms, respective DR prisms in the plurality of DR prisms being packed together, an individual DR prism being shaped as a rectangular cuboid having a plurality of end surfaces, the individual DR prism comprising an internal diagonal plane at least partially reflective for reflecting a respective single-channel image received through an image-receiving end surface of the individual DR prism towards an image-leaving end surface thereof, respective image-leaving end surfaces of the DR prisms being oriented to a same direction and aligned together on a same plane for collectively creating the multi-channel image and a substantially flat surface from which the multi-channel image exits the coupling prism; and

an imaging sensor overlying the substantially flat surface for imaging the multi-channel image upon the multi-channel image exiting the coupling prism, thereby avoiding inter-channel interference caused by spillover of the single-channel images on the multi-channel image to occur while allowing a single imaging sensor instead of a plurality of imaging sensors to image the plurality of views.