Compact Aperture Blade Assembly With Guided Magnetic Actuation

Solution Overview

Problem

The miniaturization of electronic devices, such as cameras and smartphones, complicates mechanical design and leads to low reliability and driving force for lens adjustment, making it challenging to effectively control the aperture for image capturing.

Innovation Solution

An aperture unit with a guiding element and driving assembly, including a magnetic element and sliding elements, allows for adjustable aperture size by moving blades relative to a fixed structure, enabling continuous control of the aperture opening without additional driving elements, thus addressing the mechanical design challenges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If several coils and magnets are used for adjusting the focus of a lens, then the focus adjustment function is achieved, but the device size increases and mechanical design becomes complicated

Engineering Contradiction:

Improvefocus adjustment functionVSAvoidmechanical design complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical focus adjustment system (coils and magnets) with an optical driving mechanism that uses optical forces to move the lens and aperture blades. This substitution eliminates the need for complex electromagnetic components while achieving the same focus adjustment function, thereby reducing device size and simplifying mechanical design

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an optical field as an intermediary to transfer driving force. The optical driving mechanism uses light to exert force on the lens and aperture components through optical pressure, serving as a mediator between the light source and the mechanical components, thereby avoiding direct mechanical contact and reducing complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If several coils and magnets are used for adjusting the focus of a lens, then the focus adjustment function is achieved, but the driving force becomes insufficient and reliability decreases

Engineering Contradiction:

Improvefocus adjustment functionVSAvoiddriving force reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical focus adjustment system (coils and magnets) with an optical driving mechanism that uses optical forces to move the lens and aperture blades. This substitution eliminates the need for complex electromagnetic components while achieving the same focus adjustment function, thereby reducing device size and simplifying mechanical design

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the driving mechanism from electromagnetic force to optical force. By utilizing the optical pressure generated by light, the system achieves reliable driving force without the limitations of small-scale electromagnetic components, thereby improving reliability in miniaturized devices

Inventive Principle:

Principle #35Parameter changes

3Volume of moving object

If the aperture unit is miniaturized to fit electronic devices, then the device size is reduced, but the driving force for moving the lens becomes insufficient

Engineering Contradiction:

Improveaperture unit sizeVSAvoiddriving force for lens movement

Core Design Contradiction:

Volume of moving objectVSForce

Solution Approach 1:

The patent replaces the mechanical focus adjustment system (coils and magnets) with an optical driving mechanism that uses optical forces to move the lens and aperture blades. This substitution eliminates the need for complex electromagnetic components while achieving the same focus adjustment function, thereby reducing device size and simplifying mechanical design

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the driving mechanism from electromagnetic force to optical force. By utilizing the optical pressure generated by light, the system achieves reliable driving force without the limitations of small-scale electromagnetic components, thereby improving reliability in miniaturized devices

Inventive Principle:

Principle #35Parameter changes

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

This solution enhances the focus function, reduces the risk of damage during movement, and allows for adaptable aperture sizes to meet different image capturing requirements, improving image quality and handling varying light conditions.

Implementation Method 1

a magnetic element and sliding elements, allows for adjustable aperture size by moving blades relative to a fixed structure

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS20240361563A1Aperture unit

Publication Date: 2024.10.31 ACTUTEK CORP

AI summary

An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and an opening, a guiding element movably connected to the fixed portion and accommodated in the first accommodating space, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly used for driving the guiding element to move for moving the first blade. A first accommodating space having a recessed structure is formed on the first surface. The opening is formed in the first accommodating space and has a recessed structure. The driving assembly is at least partially disposed in the opening.