Optically Coupled Device Mechanical Positioning Mechanism
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Solution Overview
Problem
Conventional optically coupled devices face challenges in achieving high-accuracy positioning of photoelectric conversion devices due to the lack of standardized positioning mechanisms, requiring complex and costly active alignment processes, which increases manufacturing costs and reduces productivity.
Innovation Solution
The development of an optically coupled device with standardized photoelectric conversion device positioning mechanisms, including first and second lens surfaces and positioning mechanisms, allows for mechanical alignment without requiring precise alignment in the emission or irradiation direction, satisfying specific aperture ratios and displacement conditions to ensure efficient optical coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If active alignment is used to achieve high-accuracy positioning of the photoelectric conversion device, then positioning precision is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent replaces the optical-based active alignment system with a mechanical positioning system. Specifically, positioning protrusions on the photoelectric conversion device engage with positioning recesses on the optically coupled device main body, providing precise mechanical positioning that eliminates the need for complex active alignment processes while maintaining high positioning accuracy
Solution Approach 2:
The patent changes the positioning mechanism from an optical/active alignment parameter system to a mechanical engagement parameter system. By defining specific dimensional parameters for the positioning protrusions and recesses, the system achieves precise positioning through mechanical means rather than requiring complex active alignment procedures
2Manufacturing precision
If active alignment is performed to achieve precise positioning, then positioning accuracy is improved, but productivity decreases
Solution Approach 1:
The positioning protrusions and recesses are pre-formed on the respective components during manufacturing. This preliminary action ensures that when the photoelectric conversion device is attached to the optically coupled device main body, precise positioning is automatically achieved without requiring time-consuming active alignment operations, thereby improving productivity
Solution Approach 2:
By substituting the active alignment process with a mechanical engagement system, the patent eliminates the time-consuming alignment steps while maintaining positioning accuracy, thus significantly improving manufacturing efficiency and productivity
3Adaptability or versatility
If standardized positioning mechanisms are not used for photoelectric conversion devices, then adaptability is maintained, but manufacturing precision deteriorates
Solution Approach 1:
The patent creates a standardized positioning mechanism where positioning protrusions and recesses can be universally applied to different photoelectric conversion devices and optically coupled devices. This standardized interface provides both adaptability for different components and precise positioning, resolving the contradiction between versatility and precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables easy and accurate positioning of photoelectric conversion devices, reducing manufacturing costs and improving productivity by allowing mechanical alignment alone, thereby achieving sufficient optical coupling efficiency without the need for complex active alignment.
Implementation Method 1
light emitted from a semiconductor laser is coupled to the end surface of the optical fiber using transmittance and refraction of light by the lens surfaces
Implementation Method 2
light emitted from a semiconductor laser is coupled to the end surface of the optical fiber using transmittance and refraction of light by the lens surfaces
Data Source
AI summary
An optically coupled device and an optical module including the optically coupled device are provided in which a photoelectric conversion device can be easily and appropriately positioned, and reduction in manufacturing costs and improvement in productivity can be achieved.A configuration is made in which, when a photoelectric conversion device 7 is attached to an optically coupled device 1, sufficient optical coupling efficiency can be achieved simply by a mechanical operation in which a photoelectric conversion device 7-side positioning mechanism 12 is engaged with an optically coupled device 1-side positioning mechanism 11, without requiring alignment in any of an emission or irradiation direction of light in a photoelectric conversion element 5 and a direction perpendicular thereto.