Lens Aligning Structure for AR/VR Optical Modules
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Solution Overview
Problem
Conventional lens sets for augmented and virtual reality devices face challenges in achieving precise alignment during assembly, leading to potential deviations in structure that affect the visual experience.
Innovation Solution
The lens set incorporates an aligning structure with triangular or polygonal pillars and accommodating spaces, where the shape and size of these features determine the height and angle between lenses, ensuring precise positioning and non-parallel alignment, utilizing optical glue for enhanced bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional lens sets use special lenses to enhance visual experience, then the visual experience is improved, but the structure and fabrication methods become more complicated requiring ultra-high-accuracy positioning
Solution Approach 1:
The patent applies preliminary action by pre-forming aligning structures (protrusions and corresponding recesses) on the lens elements before assembly. These structures are designed to automatically guide and position the lenses correctly during assembly, eliminating the need for complex ultra-high-accuracy positioning mechanisms while ensuring precise alignment is achieved through the inherent geometry of the aligning features.
2Manufacturing precision
If conventional lens sets rely on ultra-high-accuracy positioning during assembly, then structural deviation is eliminated, but the device complexity increases
Solution Approach 1:
The patent implements self-service by designing aligning structures that enable the lens elements to self-align during assembly. The protrusions and corresponding recesses automatically guide the lenses into correct positioning without requiring external positioning mechanisms or complex assembly procedures. This self-aligning mechanism simplifies the overall assembly process while maintaining high structural precision.
3Ease of manufacture
If conventional lens sets use simple lens structures, then the fabrication is easier, but the alignment precision during assembly deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the lens assembly into modular components, each equipped with its own aligning structures (protrusions and recesses). This segmentation allows each lens element to be manufactured independently with standard precision, while the aligning structures ensure precise relative positioning during assembly. The modular design with integrated aligning features maintains fabrication simplicity while achieving high alignment precision.
Data Source
AI summary
A lens set with an aligning structure includes a plurality of lenses. For two adjacent lenses, when one of these two lenses has a plurality of square accommodating spaces at its peripheral area, the other one has a plurality of triangular pillars with bottom surfaces that are right-angled triangles at its corresponding peripheral area. Each of the aforementioned triangular pillars is accommodated in each of the square accommodating spaces with an inclined surface facing each of the square accommodating spaces.