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US 12,710,682 B2Granted
Variable aperture, camera module, and electronic device
AssigneeHuawei Technologies Co., Ltd.
InventorsDengfeng Li, Xiangyang Hu
Life of this patent
Estimating the term…
Abstract
A variable aperture, a camera module, and an electronic device are provided. The variable aperture includes a base, a fixed plate connected to the base, a rotation plate disposed around the fixed plate, a plurality of blades rotatively connected to the fixed plate and the rotation plate, a first SMA wire, and a second SMA wire. The first SMA wire or the second SMA wire is configured to shrink when power is on, to drive the rotation plate to rotate relative to the fixed plate. Each of the blades rotates relative to the fixed plate and slides relative to the rotation plate, so that an aperture of the aperture hole changes.
Claims20
A variable aperture, comprising:
- a base, wherein a through hole extends through the base;
- a fixed plate fixedly connected to the base, wherein the fixed plate is in a ring shape, and an inner through hole of the fixed plate is opposite to the through hole of the base;
- a rotation plate rotatively connected to the base and disposed around the fixed plate;
- a plurality of blades located on a same side of the fixed plate and the rotation plate, wherein blades of the plurality of blades are annularly distributed and enclose an aperture hole, the aperture hole is opposite to the through hole of the base, and each of the blades of the plurality of blades is rotatively connected to the fixed plate and slidably connected to the rotation plate;
- and
- a first shape memory alloy (SMA) wire and a second SMA wire, wherein a first end of each of the first SMA wire and the second SMA wire is connected to the base using a same connection manner, a second end of each of the first SMA wire and the second SMA wire is connected to the rotation plate using a same connection manner, the first SMA wire or the second SMA wire is configured to shrink when power is on, to drive the rotation plate to rotate relative to the fixed plate, and each of the blades of the plurality of blades is configured to rotate relative to the fixed plate and to slide relative to the rotation plate in a manner that an aperture of the aperture hole changes;
- and
- wherein a direction in which the first SMA wire shrinks to drive the rotation plate to rotate is opposite to a direction in which the second SMA wire shrinks to drive the rotation plate to rotate.
5 more elements
A camera module, comprising a camera lens and a variable aperture, wherein the variable aperture is fastened to the camera lens, and an aperture hole of the variable aperture is located on a light transmission path of the camera lens, and the variable aperture comprises:
- a base, wherein a through hole extends through the base;
- a fixed plate fixedly connected to the base, wherein the fixed plate is in a ring shape, and an inner through hole of the fixed plate is opposite to the through hole of the base;
- a rotation plate rotatively connected to the base and disposed around the fixed plate;
- a plurality of blades located on a same side of the fixed plate and the rotation plate, wherein blades of the plurality of blades are annularly distributed and enclose the aperture hole, the aperture hole is opposite to the through hole of the base, and each of the blades of the plurality of blades is rotatively connected to the fixed plate and slidably connected to the rotation plate;
- a first shape memory alloy (SMA) wire and a second SMA wire, wherein a first end of each of the first SMA wire and the second SMA wire is connected to the base using a same connection manner, a second end of each of the first SMA wire and the second SMA wire is connected to the rotation plate using a same connection manner, the first SMA wire or the second SMA wire is configured to shrink when power is on, to drive the rotation plate to rotate relative to the fixed plate, and each of the blades of the plurality of blades is configured to rotate relative to the fixed plate and to slide relative to the rotation plate in a manner that an aperture of the aperture hole changes;
- and
- a reset spring, connected between the first SMA wire and the second SMA wire;
- and
- wherein a direction in which the first SMA wire shrinks to drive the rotation plate to rotate is opposite to a direction in which the second SMA wire shrinks to drive the rotation plate to rotate.
6 more elements
An electronic device, comprising:
- an image processor;
- and
- a camera module, wherein the image processor is in a communication connection to the camera module, and the image processor is configured to obtain image data from the camera module and process the image data;
- wherein the camera module comprises a camera lens and a variable aperture, wherein the variable aperture is fastened to the camera lens, and an aperture hole of the variable aperture is located on a light transmission path of the camera lens, and the variable aperture comprises:
- a base, wherein a through hole extends through the base;
- a fixed plate fixedly connected to the base, wherein the fixed plate is in a ring shape, and an inner through hole of the fixed plate is opposite to the through hole of the base;
- a rotation plate rotatively connected to the base and disposed around the fixed plate;
- a plurality of blades located on a same side of the fixed plate and the rotation plate, wherein blades of the plurality of blades are annularly distributed and enclose the aperture hole, the aperture hole is opposite to the through hole of the base, and each of the blades of the plurality of blades is rotatively connected to the fixed plate and slidably connected to the rotation plate;
- and
- a first shape memory alloy (SMA) wire and a second SMA wire, wherein a first end of each of the first SMA wire and the second SMA wire is connected to the base using a same connection manner, a second end of each of the first SMA wire and the second SMA wire is connected to the rotation plate using a same connection manner, the first SMA wire or the second SMA wire is configured to shrink when power is on, to drive the rotation plate to rotate relative to the fixed plate, and each of the blades of the plurality of blades is configured to rotate relative to the fixed plate and to slide relative to the rotation plate in a manner that an aperture of the aperture hole changes;
- and
- wherein a direction in which the first SMA wire shrinks to drive the rotation plate to rotate is opposite to a direction in which the second SMA wire shrinks to drive the rotation plate to rotate.
9 more elements
Dependencies are inferred from the claim text.