Fresnel lens processing methods, Fresnel lenses, devices, equipment and media

CN117162555BActive Publication Date: 2026-05-26ENOVATE3D (HANGZHOU) TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ENOVATE3D (HANGZHOU) TECH DEV CO LTD
Filing Date
2023-09-20
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing Fresnel lenses have low light efficiency due to arc defects caused by machining. These arc defects cannot be effectively overcome, causing light to pass through the arc and resulting in ineffective light interference.

Method used

By determining the center position of the Fresnel lens and the tooth radius and tooth height of the serrated structure, the printing path of the stray light elimination structure is planned, and an opaque film layer is formed on the arc surface of each serrated structure using 3D printing to block or absorb light and reduce interference from ineffective light.

Benefits of technology

This improves the light efficiency of Fresnel lenses, ensures that light can hardly pass through the arc, reduces interference from ineffective light, and enhances the performance of optical applications.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117162555B_ABST
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Abstract

This invention relates to the field of Fresnel lens technology, disclosing a processing method, Fresnel lens, apparatus, device, and medium for Fresnel lenses. The method includes: determining the center position of a first Fresnel lens and the tooth radius and tooth height of all serrated structures; the tooth radius is the distance between the serrated structure and the center position, and the tooth height is the height of the serrated structure; determining the printing path of stray light elimination structures based on the center position and the tooth radius and tooth height of all serrated structures; and forming stray light elimination structures on the arc surface of each serrated structure of the Fresnel lens according to the printing path, thereby obtaining a second Fresnel lens. This invention, by forming stray light elimination structures on the arc surface of each serrated structure of the Fresnel lens, overcomes the arc defects caused by machining, thereby ensuring that light cannot pass through the arc and reducing interference from ineffective light.
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