{HEAD ~ at least an imaging device} receiving the red beam, the green beam, and the blue beam from the light source and reflecting predetermined parts of the red beam, the green beam, and {TAIL ~ the blue beam} to form an image beam according to image signals 
reflecting
{ HEAD ~ at least an imaging device } receiving the red beam , the green beam , and the blue beam from the light source and reflecting predetermined parts of the red beam , the green beam , and { TAIL ~ the blue beam } to form an image beam according to image signals
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH