Folded Telephoto Camera Module With Plastic Light-Folding Optics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional telephoto optical systems face challenges in achieving compact size and high image quality due to complex structures and weight, making them unsuitable for modern electronic devices with compact and multi-functional requirements.
Innovation Solution
A camera module design incorporating a plastic light-folding element that folds the optical axis, a driving module to move the light-folding element parallel to the axis, and an image stabilization module to move the imaging lens or sensor perpendicular to the axis, all within a compact casing, utilizing spherical rollable supports and ferromagnetic elements for stability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional telephoto optical systems are designed to achieve high image quality, then image quality is improved, but the total length and size of the system become excessively long and large
Solution Approach 1:
The patent introduces a light-folding element that folds the optical axis, changing the linear optical path into a folded path. This allows the optical system to achieve a long effective focal length while maintaining a compact physical footprint, resolving the contradiction between image quality (requiring long focal length) and system size (requiring compact dimensions).
2Measurement precision
If conventional telephoto optical systems are designed to achieve high image quality, then image quality is improved, but the system size becomes excessively large
Solution Approach 1:
By folding the optical axis using the light-folding element, the patent transforms a linearly extended optical path into a compact folded configuration. This reduces the overall system area while maintaining the effective optical path length necessary for high image quality.
3Area of stationary object
If a folded optical axis configuration is used to achieve compactness, then system size is reduced, but the driving unit structure becomes complex and weight increases
Solution Approach 1:
The patent extracts the light-folding function from a complex mechanical driving unit and implements it through a fixed plastic light-folding element. This eliminates the need for complex driving mechanisms while achieving the desired compact folded optical path configuration.
Solution Approach 2:
The patent replaces what would traditionally be a mechanically complex adjustable folding mechanism with a fixed plastic light-folding element. This substitution eliminates complex driving units and reduces overall system weight while maintaining the compact folded optical path.
4Area of stationary object
If a folded optical axis configuration is used to achieve compactness, then system size is reduced, but the driving unit weight increases
Solution Approach 1:
The patent removes the heavy mechanical driving unit for adjusting the folding element, extracting only the essential light-folding function and implementing it through a lightweight fixed plastic element. This significantly reduces the overall system weight.
Solution Approach 2:
The patent replaces the heavy mechanical driving mechanism with a fixed plastic light-folding element, substituting complex mechanics with a simple optical component. This substitution dramatically reduces the weight of the optical system while maintaining compact dimensions.
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 a compact and lightweight camera module with high image quality by reducing structural complexity, enhancing driving efficiency, and improving image stabilization, suitable for high-end electronic devices.
Implementation Method 1
The plastic light-folding element is located on the optical axis and configured to fold the optical axis at least one time
Implementation Method 2
the image sensor is configured to convert an imaging light passing through the imaging lens module into an image signal
Data Source
AI summary
A camera module includes a casing, a base, an imaging lens module, a driving module, an image stabilization module and an image sensor. The base is coupled to the casing, forming an accommodation space. The imaging lens module is disposed in the accommodation space and includes an imaging lens and a plastic light-folding element. The driving module includes a first holder, a fixed frame, a first rollable support and a first driving mechanism. The first holder holds the plastic light-folding element. The fixed frame is disposed corresponding to the first holder. The first rollable support is disposed between the first holder and the fixed frame. The first driving mechanism is configured to drive the first holder to move relative to the fixed frame. The image stabilization module is configured to drive the imaging lens or the image sensor to move in a direction perpendicular to the optical axis.