Patent ID: 9019620
Filing Date: 2015-04-28
Classification: G02B

Abstract:
1. A zoom lens that performs zooming by moving a plurality of lens groups along an optical axis to change a distance between the plurality of lens groups, wherein at least a first group of negative optical power and a second group of positive optical power are included between an object to be imaged by the zoom lens, and an image surface, when zooming is performed from a wide-angle end to a telephoto end, a distance between the first group and the second group is reduced, and an aperture is moved together with the second group, the first group is formed, from an object side of the second group, with a front group comprising only negative lenses and a rear group comprising two lenses, a positive lens and a negative lens, from the object side of the second group, and which has a positive optical power as a whole and where