Reflective Module Holder Guide Recesses for Camera Miniaturization
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Solution Overview
Problem
Conventional camera modules with multiple lenses face challenges in miniaturization due to increased size and complexity, low product yield, and high power consumption from lens movement, particularly in achieving precise optical axis alignment and image stabilization.
Innovation Solution
A reflective module with a holder having inclined guide portions and recesses for adhesive bonding of a reflective mirror, which improves adhesion and optical reliability, and a camera module design that aligns lenses perpendicular to the device thickness for miniaturization while maintaining auto-focusing and optical image stabilization functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lenses are combined to achieve various photographing functions (optical zoom, auto-focusing, image stabilization), then the photographing functions are improved, but the size of the optical device increases
Solution Approach 1:
The patent combines multiple lens functions (optical zoom, auto-focusing, image stabilization) into a single integrated lens module with a unified holder structure. The holder simultaneously supports multiple lenses and provides integrated driving mechanisms, merging what would traditionally require separate assemblies into one compact unit, thereby achieving various photographing functions without proportionally increasing device size
Solution Approach 2:
The lens holder is designed as a multi-functional component that performs multiple operations: it holds multiple lenses in precise positions, provides optical axis alignment, enables auto-focusing through axial movement, and implements image stabilization through lateral displacement. This universal structure eliminates the need for separate mechanisms for each function, reducing overall device size while maintaining full functionality
2Ease of manufacture
If lenses are directly fixed in the lens holder without adjustment capability, then the manufacturing process is simplified, but the mounting precision is insufficient
Solution Approach 1:
The holder structure incorporates pre-designed guide portions and recesses that establish precise optical axis alignment before lens mounting. The guide portions extend along both side surfaces of the reflective mirror with recesses positioned to receive adhesive, pre-positioning the reflective mirror in the correct orientation and location. This preliminary structural arrangement ensures high mounting precision while maintaining a simple adhesive-based attachment process
Solution Approach 2:
The patent introduces adhesive as an intermediary substance between the lens/reflective mirror and the holder. The adhesive is applied in controlled recesses within the holder's guide portions, serving as a mediator that bonds components while allowing for precise positioning. This intermediary approach enables both ease of manufacture (simple adhesive application) and high precision (controlled placement in recesses with guide structures)
3Adaptability or versatility
If lenses are moved directly for image stabilization, then the image stabilization function is achieved, but the driving force required increases power consumption
Solution Approach 1:
The holder structure incorporates a counterweight mechanism that balances the weight of the lenses and reflective mirror. By providing counterbalancing forces through the holder's design, the system reduces the net driving force required for image stabilization movements. This counterweight approach allows image stabilization to function effectively while minimizing power consumption, as the driving mechanism only needs to overcome small imbalances rather than the full weight of the optical components
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 enhances the reliability and miniaturization of camera modules by improving adhesion between the reflective mirror and holder, reducing the risk of separation and adhesive leakage, and maintaining optical stability and image quality with reduced power consumption.
Implementation Method 1
a reflective mirror disposed on the holder, and an adhesive that adheres the reflective mirror to the holder
Implementation Method 2
Reflective module and camera module comprising same... reflective mirror... maintaining optical stability and image quality
Data Source
AI summary
A reflective module disclosed in an embodiment of the invention includes a holder having an inclined bottom surface and first and second guide portions disposed on both sides of the inclined bottom surface, a reflective mirror disposed on the holder, and an adhesive that adheres the reflective mirror to the holder, wherein the first guide portion and the second guide portion extend along both side surfaces of the reflective mirror, the first guide portion includes a plurality of first recesses, each of which faces one side surface of the reflective mirror; the second guide portion includes a plurality of second recesses, each of which faces the other side surface of the reflective mirror; and the adhesive may be respectively disposed in the plurality of first and second recesses and adhered to one side surface and the other side surface of the reflective mirror.