Lens Module Inclined Surface Alignment
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Solution Overview
Problem
Existing lens modules with small head sizes face challenges in achieving precise alignment of optical axes between lenses due to limited space, leading to poor assembly precision and compromised imaging quality.
Innovation Solution
The lens module design incorporates inclined surfaces on lenses and a concave recess in the barrel to ensure precise alignment of optical axes, using a combination of inclined surfaces on the first and second lenses and a concave recess with an annular bulge to facilitate better assembly and light passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the outer diameter of the first lens is made small to ensure lens barrel wall thickness, then the lens barrel wall thickness is sufficient, but the assembly precision of the first lens and second lens deteriorates due to insufficient space for bumpy ridge joining
Solution Approach 1:
The patent introduces a new dimensional feature - the inclined surface on the lens barrel - to solve the space constraint problem. By adding this inclined surface that slopes toward the object side, the design creates a new geometric dimension for alignment, allowing precise optical axis alignment without requiring additional radial space that would compromise wall thickness
Solution Approach 2:
The inclined surface acts as an intermediary alignment feature between the lens barrel and the lenses. This intermediate geometric structure facilitates precise positioning by providing a reference surface that guides lens placement, thereby improving assembly precision without affecting the lens barrel wall thickness
Data Source
AI summary
The present disclosure provides a lens module and an electronic device. The lens module includes a lens barrel, a first lens and a second lens accommodated in the lens barrel. The first lens includes a first optical portion and a first supporting portion wound around a periphery of the first optical portion, the second lens includes a second optical portion corresponding to the first optical portion and a second supporting portion wound around a periphery of the second optical portion. An image side of the first supporting portion is provided with a first inclined surface, and an object side of the second supporting portion is provided with a second inclined surface for adhering with the first inclined surface. The lens module of the present disclosure can improve the assembly precision of the first lens and the second lens, and thereby improving the imaging quality of the lens module.