Laser forming of non-square edges in transparent workpieces using low intensity airy beams

By using Airy beams to create bending defects in transparent workpieces and combining this with mechanical or thermal stress separation, the problem of non-square edge formation in glass processing has been solved, achieving efficient and low-damage processing results.

CN116635342BActive Publication Date: 2026-05-01CORNING INC
2 Cites 0 Cited by

Patent Information

Application Number
CN202180075733.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-09-11
Filing Date
2021-08-26
Publication Date
2026-05-01
Estimated Expiration
2041-08-26

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively form non-square edges, especially round edges, in glass processing. Furthermore, mechanical processing generates glass dust and particles, while laser processing is inefficient when forming complex shapes.

Method used

Laser processing using Airy beams involves converting the laser beam into an Airy beam using a phase-adjusting device, and creating bending defects in transparent workpieces. This is combined with mechanical or thermal stress separation of the workpiece to form non-square edges.

Benefits of technology

It enables the efficient formation of non-square edges in transparent workpieces, reduces dust and particle generation, improves processing efficiency, and reduces damage to the workpiece.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A method of processing a transparent workpiece, comprising: directing a laser beam output by a beam source onto a phase-adjusting device such that the laser beam downstream of the phase-adjusting device is an Airy beam; and directing the Airy beam onto a surface of the transparent workpiece. The Airy beam forms an Airy beam focal region in the transparent workpiece, the Airy beam of the Airy beam focal region having a maximum intensity of 100 TW / cm 2 or less, the Airy beam of the Airy beam focal region inducing an absorption in the transparent workpiece, the induced absorption generating a bend defect in the transparent workpiece.
Need to check novelty before this filing date? Find Prior Art