Camera Module Reflective Element Optical Axis Folding
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Solution Overview
Problem
Conventional telephoto optical systems face challenges in achieving compactness while maintaining high image quality, often requiring complex structures and increased weight to fold the optical axis, which complicates the design and hinders their adoption in high-end electronic devices.
Innovation Solution
A camera module design incorporating a base, lens module, reflection module, longitudinal guiding bars, transverse guiding bars, and a shaft guiding bar, where the lens module is movable along these bars for image focusing and stabilization, and the reflective element is rotatable, allowing for compactness and high image quality through auto focusing and image stabilization mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional telephoto optical systems are designed to achieve compactness, then the total length is reduced, but the structure becomes overly complex and weight increases due to optical axis folding elements
Solution Approach 1:
The patent employs a reflective element to fold the optical axis, redirecting light in a different spatial dimension. This allows the optical system to achieve a compact linear footprint while maintaining the necessary optical path length through three-dimensional light routing, effectively resolving the contradiction between compactness and functional requirements
2Volume of moving object
If optical axis folding elements are added to reduce system size, then compactness is achieved, but the driving unit structure becomes complex and weight increases
Solution Approach 1:
The patent replaces complex mechanical driving units with a magnetic field-based driving mechanism. Magnetic actuators directly drive the reflective element and lens module without requiring traditional mechanical linkages, gears, or motors, thereby significantly reducing the weight and structural complexity while maintaining precise control capability
3Manufacturing precision
If conventional optical systems are designed for high image quality, then image quality is improved, but the system size and complexity increase
Solution Approach 1:
The patent integrates multiple functions into unified structures: the reflective element simultaneously achieves optical path folding and serves as a mounting platform for lens modules; guiding bars provide both mechanical support and precise positioning guidance; magnetic driving units handle both focusing and stabilization operations. This multi-functionality reduces overall system complexity while maintaining high image quality through precise optical control
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 achieves compactness and high image quality by simplifying the lens assembly structure, enabling effective auto focusing and image stabilization, thus meeting the requirements of high-end electronic devices with a balanced and efficient optical system.
Implementation Method 1
The reflection module includes a reflective element disposed on the base, and the reflective element is located on an object side of the lens module
Data Source
AI summary
A camera module includes a base, a lens module, a reflection module, a longitudinal guiding bar, a transverse guiding bar and a shaft guiding bar. The lens module has an optical axis and is disposed on the base. The reflection module includes a reflective element disposed on the base and located on an object side of the lens module. The longitudinal and transverse guiding bars are disposed between the base and the lens module and respectively extend in a first direction parallel to the optical axis and a second direction perpendicular to the optical axis. The shaft guiding bar is disposed between the base and the reflection module and extends in the second direction. The lens module is movable along the longitudinal and transverse guiding bars, respectively, and the reflective element is rotatable by taking the shaft guiding bar as a rotation axis.