Zoom lens assembly
AssigneeZhejiang Sunny Optics Co., Ltd.
InventorsFujian DAI, Wuchao XU, Qi WU, Liefeng ZHAO
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Abstract
The present disclosure discloses a zoom lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens group having refractive power; a second lens group having negative refractive power; a third lens group having refractive power; and a fourth lens group having refractive power. The zoom lens assembly may be continuously zoomed by changing positions of the second lens group and the third lens group along the optical axis. A total effective focal length ft of the zoom lens assembly in a telephoto state, and a total effective focal length fw of the zoom lens assembly in a wide-angle state satisfy: 1.3<ft/fw<3.3.
Claims20
A zoom lens assembly, sequentially from an object side to an image side of the zoom lens assembly along an optical axis, comprising:
- a first lens group having refractive power;
- a second lens group having negative refractive power;
- a third lens group having refractive power;
- and
- a fourth lens group having refractive power,
- wherein the zoom lens assembly is configured to be continuously zoomed by changing positions of the second lens group and the third lens group along the optical axis, and
- 1.3<ft/fw<3.3, where ft is a total effective focal length of the zoom lens assembly in a telephoto state, and fw is a total effective focal length of the zoom lens assembly in a wide-angle state.
A zoom lens assembly, sequentially from an object side to an image side of the zoom lens assembly along an optical axis, comprising:
- a first lens group having refractive power which comprises a first lens and a second lens sequentially arranged along the optical axis;
- a second lens group having negative refractive power which comprises a third lens and a fourth lens sequentially arranged along the optical axis;
- a third lens group having refractive power which comprises a fifth lens, a sixth lens, and a seventh lens sequentially arranged along the optical axis;
- and
- a fourth lens group having refractive power which comprises an eighth lens,
- wherein the zoom lens assembly is configured to be continuously zoomed by changing positions of the second lens group and the third lens group along the optical axis.
Dependencies are inferred from the claim text.