????? ????? IPTV? ?????? ????? ?? ???????: ???? ???????? ????? ??????? ?????? ???????? ????? ???????.The intersection of The 2 blue rays (or two orange rays) establishes the image plane. The OSLO result down below shows that the paraxial approximation is pretty inadequate for this situation!???? ???? ?????? ?????? ??????? ??????? ???? ?? ???? ???