Camera Module Optical Folding Component Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional telephoto optical systems face challenges in achieving high image quality and miniaturization while maintaining low power consumption and high moving efficiency, making them unsuitable for modern electronic devices with compact size requirements.
Innovation Solution
A camera module design incorporating an optical folding component with a reflection surface, a first and second imaging unit, and a driving device with a magnet and coil configuration, allowing for efficient movement of lens carriers along the optical axis, reducing the number of lens elements required for focusing, and incorporating an optical curved surface to enhance light convergence and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional telephoto optical systems are used, then long focal length is achieved, but device size increases and power consumption increases
Solution Approach 1:
The patent introduces an optical folding component that folds the optical axis by 90 degrees, changing the linear optical path into a folded configuration. This dimensional change allows the optical system to achieve a long effective focal length while maintaining a compact physical footprint, directly addressing the contradiction between optical system size and focal length achievement
Solution Approach 2:
The optical system is divided into multiple independent imaging units (first imaging unit with first optical imaging lens assembly, second imaging unit with second optical imaging lens assembly) with different focal lengths. This segmentation allows selective use of lens assemblies based on shooting requirements, optimizing power consumption by using shorter focal length assemblies when possible and only engaging the longer focal length path when needed
2Volume of moving object
If conventional telephoto optical systems are used, then long focal length is achieved, but moving efficiency decreases
Solution Approach 1:
The patent implements a dynamic switching mechanism where the first lens carrier can be positioned at different locations along the optical axis. The driving device moves the first lens carrier between a first location (for first focal length) and a second location (for second focal length), enabling rapid adaptation to different shooting scenarios without mechanical reconfiguration of the entire optical system, thus maintaining high moving efficiency
Solution Approach 2:
The optical system is designed with multi-functionality by incorporating both first and second optical imaging lens assemblies with different focal lengths in the same optical path. The system can function as either a short focal length camera or a long focal length camera by simply changing the position of the first lens carrier, eliminating the need for separate camera modules and improving overall system efficiency
3Reliability
If number of lens elements is increased, then image quality is improved, but device complexity increases
Solution Approach 1:
The lens system is segmented into multiple independent lens assemblies (first optical imaging lens assembly with N1 lens elements, second optical imaging lens assembly with N2 lens elements). Each assembly is optimized for specific focal length requirements, allowing high image quality for each function while keeping individual assemblies relatively simple rather than requiring one complex multi-element lens for all functions
Solution Approach 2:
The system changes optical parameters (focal length, optical path length) by moving the first lens carrier to different positions rather than changing the internal structure of the lens elements themselves. This parameter change approach maintains lens assembly simplicity while achieving different imaging qualities suitable for various shooting scenarios
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 solution enables high moving efficiency and reduced power consumption, allowing for compact and high-performance camera modules that meet the demands of modern electronic devices, while maintaining high image quality and miniaturization.
Implementation Method 1
The first driving device includes a first driving magnet and a first driving coil. The first driving magnet is disposed on the first lens carrier. The first driving coil corresponds to the first driving magnet.
Implementation Method 2
The optical folding component has a reflection surface configured to fold the optical axis
Implementation Method 3
The optical curved surface is an object-side surface of the optical folding component. The optical folding component has positive refractive power through the optical curved surface.
Data Source
AI summary
A camera module includes a fixed component, an optical folding component, a first imaging unit, a second imaging unit, and a driving device. The optical folding component is disposed on the fixed component. The optical folding component has a reflection surface disposed at an image side of an optical curved surface. The first imaging unit is disposed at an image side of the optical folding component. The second imaging unit is disposed between the optical folding component and the first imaging unit. The driving device move the first lens carrier with respect to the fixed component. The optical curved surface is an object-side surface of the optical folding component. The optical folding component has positive refractive power through the optical curved surface.