Method for manufacturing collectively molded multi-optical transmission sheet assembly

The manufacturing method for a bulk molded multi-optical transmission sheet assembly addresses the complexity of connecting optical elements by using a bulk molded multi-optical transmission sheet with embedded optical transmission regions, which are accurately aligned using a position reference section imaging and adjustment process, thereby suppressing connection loss and simplifying the connection process.

WO2025070309A1 Publication Date: 2025-04-03KEIO UNIV
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Patent Information

Application Number
PCT/JP2024/033706
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-29
Filing Date
2024-09-20
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

The existing methods for connecting optical elements, such as optical components and equipment, using tape core wires are complex and time-consuming, requiring the removal of resin and bulk coating layers to align individual optical fibers with connectors.

Method used

A manufacturing method for a bulk molded multi-optical transmission sheet assembly, which includes a plastic sheet-shaped coating with embedded optical transmission regions. These regions have a core made of plastic and a clad region surrounding the core, arranged in a row parallel to each other. The method involves a position reference section imaging step, a core region imaging step, a position adjustment step, and a fixing step to accurately align the core regions with a housing member.

Benefits of technology

This method allows for the suppression of increased connection loss even when the core region is misaligned, simplifying the connection process and reducing the time required for alignment.

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Abstract

A method for manufacturing a collectively molded multi-optical transmission sheet assembly (100) provided with a collectively molded multi-optical transmission sheet (10) and an accommodation member (20), the method comprising: capturing an image of a position reference portion (25) provided in the accommodation member (20); generating a template image (I) that includes a reference position marker (I1) corresponding to the position reference portion (25) and a core position marker (I2) indicating the ideal position of each of core regions (11) with respect to the position reference portion (25) and that is superimposed such that the reference position marker (I1) and the captured image of the position reference portion (25) match; accommodating one end of the collectively molded multi-optical transmission sheet (10) in a disposition hole (23) of the accommodation member (20); capturing images of the core regions (11) exposed on an end surface at the one end accommodated in the disposition hole (23); adjusting the relative position of the collectively molded multi-optical transmission sheet (10) with respect to the accommodation member (20) such that the respective positions of the captured images of the core regions (11) and the respective positions of the core position markers (I2) corresponding to the respective positions match; and securing the collectively molded multi-optional transmission sheet (10) to the accommodation member (20).
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