Imaging Camera Lens Alignment via Intermediary Stop
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Solution Overview
Problem
The alignment and stability of lens units in imaging cameras are compromised when one lens unit has a greater diameter than an adjacent unit, affecting the connection and overall stability of the camera module.
Innovation Solution
A stop with specific supporting areas and a connecting area is used to offset the diameter difference between lens units, allowing for proper alignment and stabilization through mechanical forces, while also optimizing light reflection to reduce stray light and improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If lens units with different diameters are stacked one on another, then the camera module can achieve a compact structure with multiple lens units, but the alignment and connection between lens units becomes difficult, affecting stability
Solution Approach 1:
The stop acts as an intermediary component between adjacent lens units with different diameters. It includes a first supporting area that contacts the lens unit with smaller diameter and a second supporting area that contacts the lens unit with larger diameter, mediating the connection and enabling proper alignment despite the diameter difference
Solution Approach 2:
The solution moves from direct radial alignment to axial alignment through the stop structure. By introducing the stop as an intermediate element with specific geometric features (connecting area, supporting areas), the alignment problem is solved in the axial dimension rather than attempting to align radially at the same level
2Manufacturing precision
If a stop with complex supporting areas is used to align lens units, then alignment precision is improved, but the device structure becomes more complex
Solution Approach 1:
The stop serves multiple functions simultaneously: it acts as an aperture stop for light control, a mechanical support for lens units, an alignment reference through its geometric features, and a stabilizing element. This multi-functionality reduces the need for separate components and simplifies the overall structure despite the precision requirements
Data Source
AI summary
The present application discloses an imaging camera, including: a lens holder; a first lens unit, a stop, a second lens unit arranged in the lens holder in a sequence from an object side to an image side. An outer diameter of the first lens unit is greater than an outer diameter of the second lens unit. The stop includes a first supporting area abutting against the first lens unit, a second supporting area abutting against the second lens unit, and a connecting area abutting against the lens holder and connecting the first supporting area to the second supporting area. The first lens unit presses the first supporting area and forces the second supporting area to abutting against the second lens unit.