Keyed Optical Component Assembly Asymmetric Alignment
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Solution Overview
Problem
The challenge in designing smaller optical transceiver modules is maintaining optical efficiency and alignment without increasing complexity, as even minor misalignment of optical components can significantly reduce performance.
Innovation Solution
A keyed optical component assembly with a base portion having a unique asymmetric shape, featuring arcuate and tapered regions, ensures proper orientation and alignment when press-fit into the optical subassembly housing, thereby maintaining optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If optical transceiver modules are scaled down in size, then the form factor is reduced, but optical alignment precision deteriorates
Solution Approach 1:
The base portion incorporates an asymmetric keyed structure with a first arcuate region, second arcuate region, and tapered region that creates a unique geometric profile. This asymmetric design ensures that the optical component assembly can only be inserted into the housing in the correct orientation, thereby guaranteeing proper alignment of optical components even as the overall module size is reduced.
Solution Approach 2:
The keyed structure on the base portion is designed in advance to match a corresponding keyed opening in the housing. This preliminary geometric configuration ensures that during assembly, the optical component assembly automatically aligns with the correct orientation before being pressed into the housing, eliminating the need for additional alignment steps despite the compact size constraints.
2Volume of moving object
If optical transceiver modules are scaled down in size, then the form factor is reduced, but device complexity increases
Solution Approach 1:
The asymmetric keyed structure serves multiple functions simultaneously: it provides mechanical support, ensures correct orientation, and guides assembly. By integrating these functions into a single geometric feature rather than requiring separate alignment mechanisms, the design reduces overall complexity despite the compact form factor requirements.
Solution Approach 2:
The keyed structure on the base portion performs multiple functions: it acts as a mechanical support, an alignment guide, and an orientation indicator. This multi-functional design eliminates the need for separate alignment features or complex assembly procedures, thereby reducing device complexity while maintaining the reduced form factor.
3Manufacturing precision
If optical components are misaligned, then manufacturing complexity is reduced, but optical efficiency deteriorates
Solution Approach 1:
The keyed structure is designed in advance to enforce correct alignment during assembly. The geometric features (arcuate regions and tapered region) are configured to match between the base portion and housing, ensuring that optical components are automatically positioned correctly as the assembly is pressed together, thereby preventing misalignment and maintaining optical efficiency.
Solution Approach 2:
The asymmetric keyed structure creates a unique fit between the base portion and housing that only accommodates the correct orientation. This geometric constraint ensures that optical components are properly aligned during assembly, preventing misalignment that would cause optical power loss while maintaining a relatively simple manufacturing process.
Data Source
AI summary
The present disclosure is directed to a keyed optical component assembly that ensures that the same has a proper orientation when press-fit into or otherwise coupled to a complimentary opening of an optical subassembly housing. In an embodiment, the keyed optical component assembly includes a base portion defined by a first end and a second end disposed opposite the first end along a longitudinal axis. A first arcuate region extends from the first end towards the second end and transitions into a tapered region. A second arcuate region extends from the second end towards the first end and also transitions into the tapered region. Therefore, the tapered region extends between the first arcuate region and the second arcuate region, and generally tapers/narrows from the second arcuate region to the first arcuate region. The resulting shape of the base portion may generally be described as an asymmetric tear-drop shape.