Camera Module Multi-Axis Rotation Shaking Correction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Camera modules in mobile devices face limitations in correcting shaking and hand movement during video recording, particularly when the lens module is moved perpendicular to the optical axis, and this can result in increased height and reduced effectiveness of shaking correction.

Innovation Solution

A camera module design that includes a movable member with a lens module, a holder, a fixing frame, and support frames, allowing the movable member to rotate about three axes using a magnet and coil configuration to correct for shaking, with specific magnet and coil arrangements to address movement in different axes, and support frames to stabilize the pivot portion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the lens module is moved in the direction perpendicular to the optical axis to correct shaking, then shaking correction capability is improved, but the height of the camera module in the optical axis direction increases due to supporting configurations

Engineering Contradiction:

Improveshaking correction capabilityVSAvoidheight of camera module

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The pivot portion is nested within a cavity formed in the fixing frame, allowing the movable frame to rotate in place without requiring additional space that would increase the camera module height. The support frames are positioned to surround the pivot portion within the existing structure, enabling multi-axis rotation while maintaining a compact form factor.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The invention transitions from single-axis linear movement to multi-axis rotational movement by introducing a pivot portion that enables rotation about three axes (optical axis, first axis perpendicular to optical axis, and second axis perpendicular to both). This dimensional change allows shaking correction in multiple directions without increasing the camera module height.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If the lens module is moved in the direction perpendicular to the optical axis, then shaking correction is enabled, but manufacturing complexity increases due to requirements for ball members and guide grooves

Engineering Contradiction:

Improveshaking correction capabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The support frames are integrated directly into the fixing frame structure, with the first support frame and second support frame forming a unified assembly that surrounds the pivot portion. This merging eliminates the need for separate ball members and guide grooves, simplifying manufacturing while maintaining the multi-axis rotation capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The pivot portion serves multiple functions: it acts as the rotation center for multi-axis movement, provides structural support for the movable frame, and enables shaking correction in multiple directions. This multi-functionality reduces the need for additional components, thereby simplifying manufacturing.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If a configuration with ball members and guide grooves is used to support the lens module, then the lens module can be moved perpendicular to the optical axis, but the height of the camera module increases

Engineering Contradiction:

Improvemovement capabilityVSAvoidheight of camera module

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The invention transitions from linear translational movement to rotational movement about three axes. The movable frame rotates dynamically about the optical axis, the first axis perpendicular to the optical axis, and the second axis perpendicular to both, providing adaptability for shaking correction in multiple directions without increasing height.

Inventive Principle:

Principle #15Dynamics

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 camera module effectively corrects for shaky-hand issues during image and video recording by rotating the movable member about three axes, improving stability and reducing the module's size while maintaining optical axis alignment.

Implementation Method 1

the actuator generally moves the lens module in the direction of the optical axis and in a direction perpendicular to the optical axis by driving force of a magnet and a coil

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS11228714B2Camera module

Publication Date: 2022.01.18 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

A camera module includes a movable member, a holder, a fixing frame, a movable frame, and a first support frame. The movable member includes a lens module. The holder is coupled to the movable member and includes a magnet member. The fixing frame is configured to accommodate the holder and includes a coil member configured to face the magnet member. The movable frame is mounted on the holder and includes a pivot portion. The first support frame is configured to surround an upper surface portion of the pivot portion and a second support frame is configured to surround a lower surface portion of the pivot portion. The first support frame and the second support frame are respectively mounted on the fixing frame, and the movable frame is rotatably disposed around the pivot portion.