Invention Application
WO2003059568A1 METHOD FOR LASER MACHINING A WORKPIECE WITH LASER SPOT ENLARGEMENT
审中-公开
激光加工工具的方法与激光点扩大
- Patent Title: METHOD FOR LASER MACHINING A WORKPIECE WITH LASER SPOT ENLARGEMENT
- Patent Title (中): 激光加工工具的方法与激光点扩大
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Application No.: PCT/US2003/000686Application Date: 2003-01-10
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Publication No.: WO2003059568A1Publication Date: 2003-07-24
- Inventor: CUTLER, Donald, R.
- Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC. , CUTLER, Donald, R.
- Applicant Address: 13900 NW Science Park Drive, Portland, OR 97229-5497 US
- Assignee: ELECTRO SCIENTIFIC INDUSTRIES, INC.,CUTLER, Donald, R.
- Current Assignee: ELECTRO SCIENTIFIC INDUSTRIES, INC.,CUTLER, Donald, R.
- Current Assignee Address: 13900 NW Science Park Drive, Portland, OR 97229-5497 US
- Agency: LEVINE, Michael, L.
- Priority: US60/348,613 20020111
- Main IPC: B23K26/38
- IPC: B23K26/38
Abstract:
An fast steering mirror (30) , such as a PMN actuated mirror, is positioned in a beam path (18) of a stage-based positioning system (40) to continuously move a laser beam (46) in a high speed prescribed pattern about a nominal target position (60) to spatially separate focused laser spots (48) generated at a high laser repetition rate and thereby create geometric features having dimensions greater than those of the focused laser spot (48). A series of laser spots (48) at a given repetition rate appear as a series of larger diameter laser spots at a lower pulse rate without beam quality problems associated with working out of focus.
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