Lens assembly, camera module, and electronic device
AssigneeHuawei Technologies Co., Ltd.
InventorsKaiyuan Zhang, Yi Zhang
Life of this patent
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Abstract
The lens assembly includes a first lens group and a second lens group that are sequentially arranged along an optical axis from an object side to an image side. The first lens group and the second lens group have a positive focal power and a negative focal power respectively. A ratio of a focal length f1 of the first lens group to a focal length f2 of the second lens group satisfies 0.4<|f1/f2|<1.5. When the lens assembly switches from an infinity state to a macro state, the first lens group moves toward the object side along the optical axis, and a range of a movement distance of the first lens group is 1<L<3.5.
Claims20
A lens assembly, comprising a first lens group and a second lens group that are sequentially arranged along an optical axis from an object side to an image side, wherein each lens group comprises a plurality of lenses sequentially arranged along the optical axis, the first lens group has a positive focal power, and the second lens group has a negative focal power;
- a focal length f1 of the first lens group and a focal length f2 of the second lens group satisfy a conditional expression:
- 0.4<|f1/f2|<1.5;
- the first lens group is capable of moving along the optical axis, and when the lens assembly switches from an infinity state to a macro state, the first lens group moves toward the object side;
- and
- when the lens assembly switches from the infinity state to the macro state, a movement distance L of the first lens group along the optical axis satisfies a conditional expression:
- 1 mm<L<3.5 mm.
A lens assembly, comprising a first lens group and a second lens group that are sequentially arranged along an optical axis from an object side to an image side, wherein each lens group comprises a plurality of lenses sequentially arranged along the optical axis, the first lens group has a positive focal power, and the second lens group has a negative focal power;
- a focal length f1 of the first lens group and a focal length f2 of the second lens group satisfy a conditional expression:
- 0.4<|f1/f2|<1.5;
- the first lens group is capable of moving along the optical axis, and when the lens assembly switches from an infinity state to a macro state, the first lens group moves toward the object side;
- and
- wherein the lens assembly satisfies a conditional expression:
- 0.1<L/TTL1<0.5,
- wherein TTL1 represents the total track length of the lens assembly in the infinity state, L represents a movement distance of the first lens group along the optical axis when the lens assembly switches from the infinity state to the macro state.
An electronic device, comprising at least a housing and a camera disposed on the housing, wherein the camera comprises a lens assembly, wherein the lens assembly comprises a first lens group and a second lens group that are sequentially arranged along an optical axis from an object side to an image side, wherein each lens group comprises a plurality of lenses sequentially arranged along the optical axis, the first lens group has a positive focal power, and the second lens group has a negative focal power;
- a focal length f1 of the first lens group and a focal length f2 of the second lens group satisfy a conditional expression:
- 0.4<|f1/f2|<1.5;
- the first lens group is capable of moving along the optical axis, and when the lens assembly switches from an infinity state to a macro state, the first lens group moves toward the object side;
- and
- when the lens assembly switches from the infinity state to the macro state, a movement distance L of the first lens group along the optical axis satisfies a conditional expression:
- 1 mm<L<3.5 mm.
Dependencies are inferred from the claim text.