发明授权
- 专利标题: Method and apparatus for laser safety
- 专利标题(中): 激光安全的方法和装置
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申请号: US20553申请日: 1998-02-09
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公开(公告)号: US5999549A公开(公告)日: 1999-12-07
- 发明人: Ladd W. Freitag , David Warren Siljenberg , Raymond Jonathan Thatcher
- 申请人: Ladd W. Freitag , David Warren Siljenberg , Raymond Jonathan Thatcher
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: H01S3/00
- IPC分类号: H01S3/00 ; H01S5/068
摘要:
A method and apparatus are provided for laser safety. A fault detector detects laser fault conditions and generates a laser fault control signal. A laser fault counter is coupled to the fault detector for counting laser fault conditions and for generating a disable laser control signal responsive to a predetermined fault count. A reset timer is coupled to the laser fault counter for identifying a predetermined reset time period responsive to the laser fault control signal and applying a reset signal to the laser fault counter. Features of laser safety method and apparatus of the invention are that the laser fault counter is reset if a second laser fault condition is not detected within the predetermined reset time period after the laser is turned on. The disable laser control signal is not generated when a safe laser optical power condition occurs between two laser fault conditions.
公开/授权文献
- USD356194S Laundry basket 公开/授权日:1995-03-07
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