Rear view vision device

摘要: Compact periscopic device particularly adapted for vehicular rear vision, including an optical train to provide a wide field of view with optimum resolution and brightness the confines relatively small housing enclosure. The directs incoming light rays through series direction reversals whereby size requirements are considerably reduced. Further, consists pair alternately operable, Fresnel-type objective lenses differing focal length either unit magnification rear-viewed objects in one instance or greatly expanded another instance. also includes image-reversing image-inversion reflective surfaces, correct lens reversal inversion image.