Convert the Olympus trinocular microscope phototube/head/port to traditional C-Mount type With different built-in reduction lens (1X, 0.63X, 0.5X, 0.35X) for achieving better field of view from microscope trinocular head suitable for 1”, 2/3”, 1/1.8”, 1/2”, 1/2.5”, 1/3” or 1/4” inch CCD or CMOS sensor chips)