Lens Module Barrel Slope Fitting for Concentricity
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Solution Overview
Problem
Existing lens modules face challenges in miniaturization due to increased wall thickness and production complexity, particularly with the need for a light hole on the barrel wall, which complicates manufacturing and increases weight.
Innovation Solution
A lens module design featuring a lens barrel with a lug and groove configuration, a stop with a smaller light hole, and a pressing ring for stable fixation, allowing for thinner barrel walls and reduced weight, while maintaining alignment and concentricity through slope fittings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a light hole is created on the first barrel wall, then the lens can be installed, but the wall thickness of the barrel wall is increased
Solution Approach 1:
The patent moves the light hole from the first barrel wall to the second barrel wall, changing the dimensional location of the aperture. This allows the first barrel wall to maintain its structural thickness while the second barrel wall provides the light passage, effectively resolving the contradiction between lens installation requirements and barrel wall thickness.
Solution Approach 2:
The patent divides the barrel wall into two distinct sections: the first barrel wall for structural support and the second barrel wall for light transmission. This segmentation allows each wall to be optimized independently - the first wall can be thicker for strength while the second wall accommodates the light hole, eliminating the need to increase overall barrel wall thickness.
2Ease of manufacture
If a light hole is created on the first barrel wall, then the lens can be installed, but the height and weight of the entire lens module is increased
Solution Approach 1:
By relocating the light hole to the second barrel wall, the patent prevents the need to increase the thickness of the first barrel wall, thereby maintaining the compact height and weight of the lens module while still enabling proper lens installation.
3Manufacturing precision
If a slope is provided on the first barrel wall at the position of the light hole, then the lens can be positioned, but the difficulty of production is increased
Solution Approach 1:
The patent extracts the sloped positioning feature from the first barrel wall and relocates it to the second barrel wall at the light hole position. This separates the structural support function of the first wall from the positioning and light transmission functions of the second wall, simplifying the manufacturing of the first wall while maintaining precise lens positioning capability.
Data Source
AI summary
A lens module is disclosed. The lens module includes a lens barrel including a first barrel wall extended horizontally and a second barrel wall extended from the first barrel wall; a lens group including at least one lens, the lens includes a first slope; a stop on the first barrel wall and forming a light hole for the lens, and a pressing ring attached to the stop. The first barrel wall of the lens barrel includes a second slope abutting against the first slope for ensuring the concentricity.