??? ????? ???? ????? ???? ???. ?? ???? ?? ??? ????~!  ???????????? ?? ??? ?? ??????? ??? ?? ???? E??? ??? ?? ?? ?? ???? ?? ??? ??? ?????? ??? ???? ??? ??? ???? ????? ????? ??? ??? ?????.??? ????? ??, ?? ???? ??? ??? ????? ?? ??? ??? ?????.Whilst in theory an easy convex lens will suffice, in practice a compound lens created up of a number of optic

??? ??? ???? ???. ??? ???? ??? ???? ??? ??? ????.???? ?? ??? ???? ??? ??? ??? ?? ? ? ????. ?????????? ?? ???? ??? ?? ???? ?????, ? ?? ???? ??? ? ??? ???????.To attenuate aberration, the curvature is generally established so which the angle of incidence as well as the angle of refraction are equal. In a main lens this is not difficult, but in the zo

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The lens commonly is focused by changing the gap in the lens assembly for the picture plane, or by moving features of the lens assembly. To further improve functionality, some lenses Have a very cam program that adjusts the gap concerning the teams as being the lens is focused.???? ?? ??? ???? ??? ??? ??? ?? ? ? ????.A aspect result of applying len

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