Anti-Rotation Lens Assembly for Free-Curved Lens Alignment
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Solution Overview
Problem
The issue of lens assembly resolution degradation due to improper orientation of free-curved lenses, particularly when they rotate or twist during assembly, is addressed.
Innovation Solution
The lens assembly incorporates anti-rotation lenses with flange portions featuring inclined outer surfaces and a lens barrel with corresponding coupling portions, along with spacers having inclined outer and inner surfaces, to securely fix the lenses and spacers in place, preventing rotation and maintaining consistent resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a free-curved lens is disposed in a lens barrel, then the optical performance can be improved by varying light refraction, but the resolution becomes problematic when the dispositional direction of the free-curved lens is reversed
Solution Approach 1:
The lens assembly introduces asymmetric anti-rotation structures including a flange portion with inclined outer surfaces and corresponding coupling portions. These asymmetric features prevent the free-curved lens from rotating or reversing its dispositional direction, ensuring that the lens maintains a fixed orientation relative to the optical axis while still allowing the desired variation in light refraction through the free-curved surface design
2Adaptability or versatility
If the dispositional direction of the free-curved lens is reversed, then different light refraction occurs, but the resolution of the camera module becomes problematic
Solution Approach 1:
The lens assembly employs preliminary anti-action by pre-installing anti-rotation structures (flange portion with inclined surfaces and coupling portions) that proactively prevent the lens from reversing its dispositional direction before any such reversal can occur. This ensures the lens maintains a predetermined orientation, preserving resolution while allowing controlled light refraction variation
3Manufacturing precision
If the anti-rotation lens is secured with inclined outer surfaces and coupling portions, then rotation is prevented and resolution remains constant, but the device complexity increases
Solution Approach 1:
The lens assembly merges the anti-rotation function with the existing lens mounting structure by integrating the flange portion into the lens body and the coupling portions into the lens barrel. This combination approach prevents rotation while minimizing additional structural complexity, as the anti-rotation features are incorporated into the fundamental mounting components rather than adding separate dedicated anti-rotation mechanisms
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 configuration ensures that the lenses and spacers remain fixed and aligned, thereby maintaining consistent optical performance and preventing resolution degradation.
Implementation Method 1
the flange portion includes a first inclined outer surface extending in a first direction from a first outer point on a side surface of the flange portion and a second inclined outer surface extending in a second direction different from the first direction from the first outer point; and a lens barrel configured to accommodate the plurality of lenses, the lens barrel including a first coupling portion configured to contact the first inclined outer surface and the second inclined outer surface
Data Source
AI summary
A lens assembly includes a plurality of lenses including an anti-rotation lens having a flange portion extending along at least a portion of a circumference of the anti-rotation lens, wherein the flange portion includes a first inclined outer surface extending in a first direction from a first outer point on a side surface of the flange portion and a second inclined outer surface extending in a second direction different from the first direction from the first outer point; and a lens barrel configured to accommodate the plurality of lenses, the lens barrel including a first coupling portion configured to contact the first inclined outer surface and the second inclined outer surface.