Peripheral structure of optical element, optical device and mold for resin molding

JP2025005531AInactive Publication Date: 2025-01-17TANAZAWA HAKKOSHA CO LTD
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Patent Information

Application Number
JP2023105732
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-06-28
Publication Date
2025-01-17
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Conventional methods for forming hydrophilic or water-repellent films on lens surfaces require time and cost, and when water droplets adhere to the lens periphery, they can cause unsightly ring stains and damage.

Method used

A peripheral structure for optical elements with a textured surface on the housing edge, featuring hydrophilic, water-repellent, or drainage properties, which reduces contamination by managing water droplets without additional coating processes.

Benefits of technology

The textured surface effectively prevents water droplets from adhering and spreading, facilitating easy removal and reducing the risk of staining, thus maintaining lens clarity at a lower cost and effort.

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Abstract

To save time and effort for manufacturing, and reduce contamination of the surface and the periphery of a lens and other optical elements at low cost.SOLUTION: There is provided a peripheral structure of an optical element as a camera lens 120, which is provided in a housing 100 having an end face 110 as a peripheral edge part extending on periphery of the camera lens 120, wherein an embossed surface subjected to embossing is formed on the surface of the end face 110.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Lens with holder and method for manufacturing lens with holder

    JP2018040859A

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    US20190179100A1

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    WO2020110416A1

  • Anti-fogging device and Anti-fogging mirror unit

    JP2011034101A