Lens assembly, camera module, and electronic device
AssigneeHuawei Technologies Co., Ltd.
InventorsKaiyuan ZHANG, Yi ZHANG
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Abstract
The present disclosure relates to a lens assembly, a camera module, and an electronic device. One example lens assembly includes a first lens, a second lens group, and a third lens group. When the lens assembly is switched from an infinity state to a macro state, the second lens group moves towards an object side by a preset distance (L) along an optical axis direction to implement a macro function. A focal length f1 of the first lens and a focal length EFL1 of the lens assembly in the infinity state satisfy 1<|f1/EFL1|<2.
Claims22
A lens assembly, comprising a first lens, a second lens group, and a third lens group that are sequentially arranged from an object side to an image side along an optical axis direction, wherein;
- the second lens group comprises a plurality of sequentially arranged second lenses, and the third lens group comprises a plurality of sequentially arranged third lenses;
- the second lens group is movable along the optical axis direction, and when the lens assembly is switched from an infinity state to a macro state, the second lens group moves towards the object side by a preset distance L along the optical axis direction;
- a focal length f1 of the first lens and a focal length EFL1 of the lens assembly in the infinity state satisfy a conditional expression:
- 1<|f1/EFL1|<2;
- and
- the preset distance L by which the second lens group moves and a total track length TTL of the lens assembly in the infinity state satisfy a conditional expression:
- 0.1<L/TTL<0.3.
(canceled)
15-16. (canceled)
A camera module, comprising at least an image sensor and a lens assembly, wherein the image sensor is located on a side that is of the lens assembly and that faces an image side, wherein the lens assembly comprises a first lens, a second lens group, and a third lens group that are sequentially arranged from an object side to the image side along an optical axis direction, and wherein:
- the second lens group comprises a plurality of sequentially arranged second lenses, and the third lens group comprises a plurality of sequentially arranged third lenses;
- the second lens group is movable along the optical axis direction, and when the lens assembly is switched from an infinity state to a macro state, the second lens group moves towards the object side by a preset distance L along the optical axis direction;
- a focal length f1 of the first lens and a focal length EFL1 of the lens assembly in the infinity state satisfy a conditional expression:
- 1<|f1/EFL1|<2;
- and
- the preset distance L by which the second lens group moves and a total track length TTL of the lens assembly in the infinity state satisfy a conditional expression:
- 0.1<L/TTL<0.3.
An electronic device, comprising at least a housing and a camera module, wherein the camera module is disposed on the housing, wherein the camera module comprises at least a lens assembly, wherein the lens assembly comprises a first lens, a second lens group, and a third lens group that are sequentially arranged from an object side to an image side along an optical axis direction, and wherein:
- the second lens group comprises a plurality of sequentially arranged second lenses, and the third lens group comprises a plurality of sequentially arranged third lenses;
- the second lens group is movable along the optical axis direction, and when the lens assembly is switched from an infinity state to a macro state, the second lens group moves towards the object side by a preset distance L along the optical axis direction;
- a focal length f1 of the first lens and a focal length EFL1 of the lens assembly in the infinity state satisfy a conditional expression:
- 1<|f1/EFL1|<2;
- and
- the preset distance L by which the second lens group moves and a total track length TTL of the lens assembly in the infinity state satisfy a conditional expression:
- 0.1<L/TTL<0.3.
Dependencies are inferred from the claim text.