Title:
CAMERA FOCUSING MODULE, FOCUSING METHOD, TERMINAL DEVICE AND MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/065873
Kind Code:
A1
Abstract:
The present invention relates to the technical field of photography, and in particular to a camera focusing module, a focusing method, a terminal device and a medium. The camera focusing module comprises a shell, a lens, an image circuit board, an image chip, a driving assembly, a position detection assembly and a controller. The position detection assembly comprises two first position sensors and a first position magnet, wherein the two first position sensors are sequentially installed on a movable part in an extension direction of an optical axis; and the first position magnet is installed on the shell, and is arranged corresponding to the first position sensors. The first position magnet comprises at least three magnetic pole groups, wherein the at least three magnetic pole groups are sequentially stacked in the extension direction of the optical axis, and magnetic poles of adjacent magnetic pole groups facing the position sensors are opposite. The present invention can achieve rapid and accurate focusing and closed-loop focusing control, and can improve the focusing precision and stability.
Inventors:
MAK LIN CHI (CN)
Application Number:
PCT/CN2022/124396
Publication Date:
April 04, 2024
Filing Date:
October 10, 2022
Export Citation:
Assignee:
VISTA INNOTECH LTD (CN)
International Classes:
H04N23/55; G03B13/36; G03B17/55; H04N23/50
Foreign References:
| CN215344739U | 2021-12-28 | |||
| CN113014788A | 2021-06-22 | |||
| CN113632451A | 2021-11-09 | |||
| CN211481353U | 2020-09-11 | |||
| CN112752005A | 2021-05-04 | |||
| US20150022891A1 | 2015-01-22 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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