Lens Assembly Alignment via Intermediary Support Structure
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Solution Overview
Problem
Existing optical devices, such as VR glasses, face challenges in aligning and maintaining the precise positioning of multiple lenses, leading to potential dislocation, deviation, and tilt of lens surfaces and optical axes, which can affect the quality of the optical path and VR imaging.
Innovation Solution
A lens assembly that includes a first lens, a second lens, a limiting component, a positioning component, and a connecting component. The limiting component fixes the distance between the lenses, the positioning component ensures precise alignment, and the connecting component stabilizes the assembly, minimizing the impact of dimensional and assembly tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If additional auxiliary support structures are used to align and support multiple lenses, then the lenses can be installed and supported, but dimensional tolerances and assembly tolerances cause dislocation, deviation and tilt of lens surfaces and optical axes
Solution Approach 1:
The patent introduces a lens support assembly as an intermediary structure between the lenses and the housing. This assembly includes a support body with positioning features that precisely locate multiple lenses relative to each other, acting as a mediator that eliminates the need for additional auxiliary support structures while maintaining high alignment precision. The support body serves as a reference frame that defines the optical axis and positions lens surfaces accurately.
Solution Approach 2:
The patent divides the optical system into modular components: individual lenses are mounted on a separate support assembly rather than being directly installed in the housing. This segmentation allows the support assembly to be precisely manufactured and pre-assembled with accurate lens positioning, then integrated as a complete unit into the optical device, thereby isolating and controlling tolerance accumulation.
2Ease of manufacture
If dimensional tolerances and assembly tolerances are present in auxiliary support structures, then manufacturing is easier, but optical path deviations occur affecting VR imaging quality
Solution Approach 1:
The lens support assembly serves as a precision intermediary that absorbs and isolates dimensional tolerances. By concentrating tolerance control in the support assembly's manufacturing process rather than in multiple separate auxiliary structures, the system achieves reliable optical path stability while maintaining ease of manufacture through standardized production of the support component.
Solution Approach 2:
The support assembly is designed with built-in tolerance compensation features that preemptively address potential misalignments. The positioning structures incorporate allowable tolerance ranges that are pre-engineered to maintain optical accuracy even when minor dimensional variations occur during manufacturing, thus cushioning against the effects of tolerances before they can cause optical path deviations.
Data Source
AI summary
A lens assembly is provided, comprising a first lens, a second lens, a limiting component, a positioning component, and a connecting component. The first lens is stacked with the second lens. The limiting component comprises a first limiting piece and a second limiting piece, a receiving groove is formed between the first limiting piece and the second limiting piece. The positioning component comprises a positioning bulge, the positioning bulge is arranged on a side of the second lens near the first lens. The connecting component comprises a first connecting structure and a second connecting structure, the first connecting structure is arranged on the first lens, the second connecting structure is arranged on the second lens, the second connecting structure is bonded with the first connecting structure.