Title:
VARIABLE APERTURE, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/228238
Kind Code:
A1
Abstract:
A variable aperture (1), a camera module (20), and an electronic device (100). The variable aperture (1) comprises a base (12), a fixed disk (13), a rotary disk (14), a plurality of blades (15), a first SMA wire (16), and a second SMA wire (17). The fixed disk (13) is fixedly connected to the base (12), and the rotary disk (14) is rotatably connected to the base (12) and surrounds the fixed disk (13). The plurality of blades (15) are annularly distributed and enclose to form an aperture hole (11), and each blade (15) is rotatably connected to the fixed disk (13) and is slidably connected to the rotary disk (14). The first SMA wire (16) and the second SMA wire (17) both have one end connected to the base (12) and the other end connected to the rotary disk (14). The first SMA wire (16) or the second SMA wire (17) is used for contracting when energized to drive the rotary disk (14) to rotate with respect to the fixed disk (13), and each blade (15) rotates with respect to the fixed disk (13) and slides with respect to the rotary disk (14), so that the diameter of the aperture hole (11) changes. The direction in which the first SMA wire (16) contracts to drive the rotary disk (14) to rotate is opposite to the direction in which the second SMA wire (17) contracts to drive the rotary disk (14) to rotate. The diameter adjustment precision of the aperture hole (11) of the variable aperture (1) is high.
Inventors:
LI DENGFENG (CN)
HU XIANGYANG (CN)
HU XIANGYANG (CN)
Application Number:
PCT/CN2022/087949
Publication Date:
November 03, 2022
Filing Date:
April 20, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B7/00; G02B7/02; G03B9/02; G03B9/06
Foreign References:
| CN110554547A | 2019-12-10 | |||
| CN107147831A | 2017-09-08 | |||
| CN112505979A | 2021-03-16 | |||
| CN210323702U | 2020-04-14 | |||
| CN111580322A | 2020-08-25 | |||
| US20190146125A1 | 2019-05-16 | |||
| CN202110475918A | 2021-04-29 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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