Camera Module Aperture-Focus Drive Integration to Cut Interference

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Solution Overview

Problem

Existing camera modules face challenges with large volume and weight due to blade driving mechanisms, which interfere with focusing mechanisms and hinder smooth operation, and there is a need to reduce interference and improve reliability.

Innovation Solution

A camera module design with a driving member that simultaneously drives a lens supporting frame for focusing and a blade driving frame for aperture adjustment, using magnetic steel and coils to minimize components and interference, reducing volume and weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a blade driving device is provided to adjust aperture size, then the camera module can adapt to different light scenes, but the blade driving mechanism increases volume and weight and interferes with the focusing mechanism

Engineering Contradiction:

Improveaperture adjustment capabilityVSAvoidblade driving mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the blade driving mechanism and focusing mechanism into a shared housing structure. Both mechanisms are integrated within the same optical module, reducing overall device complexity while maintaining independent functionality. The blade driving frame and lens supporting frame coexist in a unified structure that minimizes interference between the two mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The blade driving ring is rotatably disposed within the blade driving frame, and the light-shielding blades are nested on the blade driving ring. This nested arrangement allows compact packaging of the aperture mechanism, reducing its volume and weight while preventing interference with the focusing mechanism operating in a different spatial plane.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Weight of moving object

If the blade driving mechanism volume is reduced using shape memory metal, then weight and volume decrease, but the mechanism cannot effectively solve problems when large opening size change is required

Engineering Contradiction:

Improveblade driving mechanism weightVSAvoidopening size adjustment range

Core Design Contradiction:

Weight of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent replaces shape memory metal with a magnetic driving system consisting of a blade driving motor and blade driving ring. This mechanical substitution enables large opening size changes through rotational movement of the blade driving ring, which drives the light-shielding blades to gather or separate. The magnetic driving system provides sufficient torque and control range that shape memory metal cannot achieve.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the blade driving mechanism and focusing mechanism are separated to avoid interference, then operational independence is improved, but the number of elements and overall volume increases

Engineering Contradiction:

Improvemechanism operational independenceVSAvoidcamera module volume

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent separates the blade driving mechanism and focusing mechanism into different spatial dimensions and operational planes. The blade driving ring rotates in a plane perpendicular to the optical axis, while the lens moves along the optical axis for focusing. This dimensional separation allows both mechanisms to operate independently without interference while sharing the same housing space, thus reducing overall module volume.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design reduces the number of elements and weight, avoiding interference between focusing and blade driving structures, enhancing controllability and stability while maintaining aperture adjustments.

Implementation Method 1

using magnetic steel and coils to minimize components and interference

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

the driving member is further configured to drive the blade driving frame to rotate

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS12529939B2Camera module, camera, and electronic device

Publication Date: 2026.01.20 AAC OPTICS SOLUTIONS PTE LTD

AI summary

Embodiments of the disclosure relate to a camera module. The base is provided with a driving member, the driving member is used for driving a lens supporting frame to move and focus along an optical axis direction, and the driving member is further configured to drive the blade driving frame to rotate around the optical axis. That is to say, the driving member for driving the light-shielding blades and the driving member for driving the lens to focus are the same, so that the number of elements of the camera module can be reduced, thereby reducing the volume and weight of the camera module, and avoiding interference between the structure for focusing in the camera module and the power mechanism for driving the light-shielding blades. The embodiments of the disclosure further disclose a camera and an electronic device.