Catadioptric does mean exactly that - a combination of mirrors and lenses. In photography, catadioptric lenses are used to make very compact for the focal length telephoto lenses - for example, a 500 mm catadioptric lens with two mirrors and several elements weights nearly an order of magnitude less than a 500mm refractive only design.
I thought it was very interesting and unique, I have no idea what the optical design could look like. Maybe something like the perkins-elmer solid cat design, shrunk down for a long focal length but compact pancake lens.
I thought it was very interesting and unique, I have no idea what the optical design could look like. Maybe something like the perkins-elmer solid cat design, shrunk down for a long focal length but compact pancake lens.