This is a close up of the optical colour splitter for the PE-400 showing the relay lenses and the silvered and half silvered mirrors. At the left of the picture is a prism? for the luminance tube which is on the other side of the camera.

PE-400 Brochure download.

See also the related General Electric PE-250 camera.
(I haven't yet written the GE pages as of march 2009)