KR102375235B1 - 레이저 가공 시스템 및 방법 - Google Patents
레이저 가공 시스템 및 방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 실시예에 따른 레이저 가공 시스템 중 광학 유닛을 도시한 도면이다.
도 3은 본 발명의 실시예에 따른 레이저 가공 시스템 중 광학 유닛을 통해 스캐닝되는 모습을 도시한 도면이다.
도 4는 도 3의 Ⅳ 부분을 확대한 도면이다.
도 5는 본 발명의 실시예에 따른 레이저 가공 방법을 통해 피가공물이 가공되는 과정을 도시한 도면이다.
100 레이저 유닛 200 광학 유닛
210 제 1 광학 유닛 211 제 1 광학 소자
212 제 2 광학 소자 220 제 2 광학 유닛
221 스캐너 222 포커싱 렌즈
300 스테이지 400 제어부
Claims (19)
- 레이저 빔을 방출하는 레이저 유닛;
상기 레이저 빔의 진행 경로에 배치되어 입사되는 상기 레이저 빔이 베셀 빔으로 출사시키는 광학 유닛;
상기 광학 유닛에서 출사되는 베셀 빔으로 가공하는 피가공물이 장착되는 스테이지; 및
상기 레이저 유닛, 상기 광학 유닛, 및 상기 스테이지의 동작을 제어하는 제어부;
를 포함하며,
상기 광학 유닛은,
출사되는 베셀 빔의 초점 라인을 상기 피가공물에 위치시키며, 상기 피가공물에 위치된 초점 라인이 소정 범위 이동되도록 구성되고, 상기 출사되는 베셀 빔의 초점 라인이 상기 피가공물의 가공면과 이루는 각도를 80~100도 범위로 유지시키며,
상기 제어부는,
상기 스테이지 및 상기 광학 유닛을 동기화하여, 상기 출사된 베셀 빔의 초점 라인이 적어도 두 축 방향으로 스캐닝되도록 상기 광학 유닛을 구동시키며 동시에 상기 스테이지를 상기 적어도 두 축 방향으로 구동시키는, 레이저 가공 시스템. - 삭제
- 제 1 항에 있어서,
상기 광학 유닛은,
상기 입사되는 레이저 빔을 베셀 빔으로 변조하는 제 1 광학 유닛, 및
상기 출사되는 베셀 빔의 초점 라인을 상기 피가공물 상에서 상기 초점 라인과 교차하는 방향으로 이동시키는 제 2 광학 유닛을 포함하는, 레이저 가공 시스템. - 제 3 항에 있어서,
상기 제 1 광학 유닛은,
상기 입사되는 레이저 빔을 베셀 빔으로 변조하는 제 1 광학 소자, 및
상기 제 1 광학 소자를 통과한 베셀 빔의 광축을 평행하게 진행시키는 제 2 광학 소자를 포함하는, 레이저 가공 시스템. - 제 3 항에 있어서,
상기 제 2 광학 유닛은,
상기 제 1 광학 유닛을 통과한 베셀 빔의 경로를 이동시키는 스캐너, 및
상기 스캐너에서 출사된 베셀 빔의 초점 라인을 상기 피가공물에 위치시키는 포커싱 렌즈를 포함하는, 레이저 가공 시스템. - 제 5 항에 있어서,
상기 제어부는,
상기 출사된 베셀 빔의 초점 라인이 적어도 두 축 방향으로 이동하도록 상기 스캐너를 구동시키며 동시에 상기 스테이지를 상기 스캐너와 동기화하여 상기 적어도 두 축 방향으로 구동시키는, 레이저 가공 시스템. - 제 5 항에 있어서,
상기 스캐너로 입사하는 베셀 빔의 직경은 3~30mm 인, 레이저 가공 시스템. - 제 5 항에 있어서,
상기 포커싱 렌즈의 초점 길이는 10~300mm 인, 레이저 가공 시스템. - 제 5 항에 있어서,
상기 스캐너에서 출사된 베셀 빔의 초점 라인이 상기 피가공물 상에서 이동되는 거리는 1μm~30mm 인, 레이저 가공 시스템. - 제 5 항에 있어서,
상기 스캐너는
상기 제어부에 의해 각도가 조절되는 복수의 미러를 포함하는, 레이저 가공 시스템. - 제 1 항에 있어서,
상기 피가공물은 평판 형태인, 레이저 가공 시스템. - 레이저 빔을 조사하여 피가공물을 가공하는 방법으로서,
레이저 빔의 진행 방향을 향해 보았을 때, 원형의 레이저 빔을 환형의 베셀 빔으로 변조하는 변조 단계; 및
상기 베셀 빔의 초점 라인이 피가공물에 위치되도록 상기 베셀 빔을 상기 피가공물에 조사하는 가공 단계;
를 포함하며,
상기 가공 단계에서,
상기 피가공물 및 상기 베셀 빔의 초점 라인의 이동을 동기화하여, 상기 피가공물을 이동시키는 동시에 상기 피가공물에 위치된 상기 베셀 빔의 초점 라인을 이동시키고,
상기 베셀 빔의 초점 라인이 상기 피가공물의 가공면과 이루는 각도를 80~100도 범위로 유지하는, 레이저 가공 방법. - 삭제
- 제 12 항에 있어서,
상기 가공 단계는,
상기 피가공물을 가공할 형상에 대응되는 가공 경로를 설정하는 단계,
상기 설정된 가공 경로를 상기 베셀 빔의 초점 라인이 이동하는 제 1 경로와 상기 피가공물이 이동하는 제 2 경로로 분리하는 단계, 및
상기 베셀 빔의 초점 라인을 상기 제 1 경로로 이동시키고 동시에 상기 피가공물을 상기 제 2 경로로 이동시켜서, 상기 피가공물을 가공 경로를 따라 가공하는 단계를 포함하는, 레이저 가공 방법. - 삭제
- 제 12 항에 있어서,
상기 가공 단계에서,
상기 피가공물에 위치된 상기 베셀 빔의 초점 라인이 상기 피가공물 상에서 이동되는 거리는 1μm~30mm 인, 레이저 가공 방법. - 제 12 항에 있어서,
상기 가공 단계는,
상기 베셀 빔의 진행 경로에 위치된 미러의 각도를 조절하여 반사되는 베셀 빔의 경로를 이동시키는 스캐닝 단계, 및
상기 반사된 베셀 빔을 상기 피가공물에 집속시키는 포커싱 단계를 포함하는, 레이저 가공 방법. - 제 17 항에 있어서,
상기 스캐닝 단계에서, 상기 미러에 입사하는 베셀 빔의 직경은 3~30mm 인, 레이저 가공 방법. - 제 17 항에 있어서,
상기 포커싱 단계에서, 초점 길이는 10~300mm 인, 레이저 가공 방법.
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| JP2023515646A JP2023552942A (ja) | 2020-09-08 | 2021-04-06 | レーザ加工システムおよび方法 |
| PCT/KR2021/004300 WO2022055062A1 (ko) | 2020-09-08 | 2021-04-06 | 레이저 가공 시스템 및 방법 |
| CN202180003139.XA CN114667196A (zh) | 2020-09-08 | 2021-04-06 | 激光加工系统及其方法 |
| EP21783385.4A EP3991905A4 (en) | 2020-09-08 | 2021-04-06 | LASER PROCESSING SYSTEM AND METHOD THEREOF |
| US17/595,764 US12303999B2 (en) | 2020-09-08 | 2021-04-06 | Laser processing system using Bessel beam and method for processing workpiece using Bessel beam |
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| CN115555708A (zh) * | 2022-10-18 | 2023-01-03 | 清华大学 | 反射式贝塞尔激光微纳加工装置及方法 |
| CN115463905B (zh) * | 2022-10-25 | 2023-11-24 | 武汉锐科光纤激光技术股份有限公司 | 一种激光清洗控制系统及方法 |
| TWI863045B (zh) * | 2022-11-30 | 2024-11-21 | 財團法人工業技術研究院 | 材料改質加工裝置與凹洞成形方法 |
| WO2025170341A1 (ko) | 2024-02-06 | 2025-08-14 | 주식회사 필옵틱스 | 극초단 레이저를 이용한 투명 취성 소재 원형 가공 시스템 및 방법 |
| JP7728533B1 (ja) * | 2025-02-25 | 2025-08-25 | 公立大学法人公立諏訪東京理科大学 | 光学装置及び微細改質領域形成方法 |
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| US5751585A (en) * | 1995-03-20 | 1998-05-12 | Electro Scientific Industries, Inc. | High speed, high accuracy multi-stage tool positioning system |
| US6706999B1 (en) * | 2003-02-24 | 2004-03-16 | Electro Scientific Industries, Inc. | Laser beam tertiary positioner apparatus and method |
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| FR2989294B1 (fr) | 2012-04-13 | 2022-10-14 | Centre Nat Rech Scient | Dispositif et methode de nano-usinage par laser |
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