Patent ID: 6104548
Filing Date: 2000-08-15
Classification: G02B

Abstract:
A zoom lens consisting of, in succession from an object side, a first lens unit having positive refractive power and consisting of a single positive lens element, a second lens unit having negative refractive power, and a third lens unit having positive refractive power, said second lens unit and said third lens unit being moved to thereby effect zooming, said zoom lens satisfying the following condition:0.5<.vertline.M.sub.3 .vertline./(F.sub.T -F.sub.W)<1.0,wherein M.sub.3 is an amount of movement of zooming from a wide angle end to a telephoto end of said third lens unit and F.sub.W and F.sub.T are respectively focal lengths of said zoom lens at the wide angle end and the telephoto end.