Invention Grant
US07864443B2 Zoom lens, imaging apparatus, and personal data assistant 有权
变焦镜头,成像设备和个人数据助理

Zoom lens, imaging apparatus, and personal data assistant
Abstract:
A zoom lens includes a first optical system having a positive focal length, the first optical system, a second optical system having a negative focal length, a third optical system having a positive focal length, a fourth optical system having a negative focal length, and a fifth optical system having a positive focal length, which are arranged in order from an object side to an image side and an aperture stop provided at an object side of the third optical system. The following condition is satisfied: 0.5
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