Lens Module Concentricity via Pre-formed Holder
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Solution Overview
Problem
Achieving high concentricity between lens groups and the lens barrel in miniature lens modules is challenging during the manufacturing process, affecting the accuracy and quality of high-definition images in electronic devices like cameras and mobile phones.
Innovation Solution
The lens module design incorporates a specific configuration with integrated supporters and sloping surfaces within the lens barrel to ensure precise alignment and coaxiality of the lens group, utilizing engaging and concave portions to maintain concentricity and reduce assembling tolerance, thereby enhancing assembling accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional manufacturing processes are used for assembling lens groups in the lens barrel, then the manufacturing process is simple and fast, but the concentricity and assembling accuracy between lens groups and the lens barrel deteriorate
Solution Approach 1:
The lens holder is pre-formed with engaging portions and concave portions that are designed to match with corresponding features on the lens groups. This preliminary preparation of alignment features before assembly ensures that when lens groups are installed, they automatically achieve precise concentricity and positional accuracy relative to the optical axis, eliminating the need for complex post-assembly adjustments
Solution Approach 2:
The lens holder acts as an intermediary component between the lens barrel and the lens groups. It features engaging portions that connect to the lens barrel and concave portions that receive the lens groups, serving as a mediating structure that ensures precise alignment and concentricity. This intermediary component transfers and maintains the positional relationship, allowing lens groups to be accurately positioned without requiring direct complex interactions between the lens barrel and multiple lens groups
2Manufacturing precision
If conventional manufacturing processes are used for assembling lens groups in the lens barrel, then the manufacturing process is simple and fast, but the assembling accuracy and misalignment control worsen
Solution Approach 1:
The lens holder is pre-formed with engaging portions and concave portions that are designed to match with corresponding features on the lens groups. This preliminary preparation of alignment features before assembly ensures that when lens groups are installed, they automatically achieve precise concentricity and positional accuracy relative to the optical axis, eliminating the need for complex post-assembly adjustments
Solution Approach 2:
The lens holder acts as an intermediary component between the lens barrel and the lens groups. It features engaging portions that connect to the lens barrel and concave portions that receive the lens groups, serving as a mediating structure that ensures precise alignment and concentricity. This intermediary component transfers and maintains the positional relationship, allowing lens groups to be accurately positioned without requiring direct complex interactions between the lens barrel and multiple lens groups
3Manufacturing precision
If high concentricity is required between lens groups and lens barrel, then image quality improves, but the manufacturing and assembly difficulty increases
Solution Approach 1:
The lens holder is pre-formed with engaging portions and concave portions that are designed to match with corresponding features on the lens groups. This preliminary preparation of alignment features before assembly ensures that when lens groups are installed, they automatically achieve precise concentricity and positional accuracy relative to the optical axis, eliminating the need for complex post-assembly adjustments
Solution Approach 2:
The lens holder acts as an intermediary component between the lens barrel and the lens groups. It features engaging portions that connect to the lens barrel and concave portions that receive the lens groups, serving as a mediating structure that ensures precise alignment and concentricity. This intermediary component transfers and maintains the positional relationship, allowing lens groups to be accurately positioned without requiring direct complex interactions between the lens barrel and multiple lens groups
Data Source
AI summary
A lens module includes a lens barrel, and a lens group received by the lens barrel. The lens barrel includes an first supporter, a second supporter extending vertically from the first supporter, and a receiving space formed by those supporters, the first supporter having a light aperture, the second supporter having an inner surface facing the receiving space. The lens group includes a first lens abutting against the inner surface of the second supporter, a second lens stacked on the first lens and abutting against the inner surface of the second supporter, a third lens stacked on the second lens and abutting against the inner surface of the second supporter, and a fourth lens stacked on the third lens and abutting against the inner surface of the second supporter, for ensuring the concentricity among the lenses and keeping the lens group coaxial with the lens barrel.