Patent ID: 6493142
Filing Date: 2002-12-10
Classification: G02B

Abstract:
A zoom lens comprising the following lens units in the order named from the object side:a first lens unit of a positive optical power, said first lens unit having a first lens subunit, a second lens subunit, and a third lens subunit of a positive optical power arranged in the order named from the object side, said second lens subunit being moved so as to have a component normal to an optical axis, thereby displacing an image; and a second lens unit of a negative optical power; upon zooming, both said first lens unit and said second lens unit are moved so that a spacing between said first lens unit and said second lens unit changes, and wherein said first lens subunit has more lens elements than said third lens subunit, and wherein the lens units of the zoom lens comprise only the first lens unit and the second lens unit.