发明申请
US20100321750A1 METHOD AND SYSTEM FOR PROVIDING RESONANT FREQUENCY CHANGE COMPENSATION IN A DRIVE SIGNAL FOR A MEMS SCANNER
有权
用于提供用于MEMS扫描仪的驱动信号中的谐振频率变化补偿的方法和系统
- 专利标题: METHOD AND SYSTEM FOR PROVIDING RESONANT FREQUENCY CHANGE COMPENSATION IN A DRIVE SIGNAL FOR A MEMS SCANNER
- 专利标题(中): 用于提供用于MEMS扫描仪的驱动信号中的谐振频率变化补偿的方法和系统
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申请号: US12766659申请日: 2010-04-23
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公开(公告)号: US20100321750A1公开(公告)日: 2010-12-23
- 发明人: Alexander Burinskiy , James Steven Brown
- 申请人: Alexander Burinskiy , James Steven Brown
- 申请人地址: US CA Santa Clara
- 专利权人: National Semiconductor Corporation
- 当前专利权人: National Semiconductor Corporation
- 当前专利权人地址: US CA Santa Clara
- 主分类号: G02B26/10
- IPC分类号: G02B26/10
摘要:
A method for providing feed forward compensation in a drive signal for a rapid resonant frequency change due to a rapid LASER intensity change upon a micro-electro-mechanical system (MEMS) mirror and/or a surrounding MEMS structure in a MEMS scanner causing a mirror temperature change is provided. The method includes determining an intensity factor for at least one laser beam projected onto the MEMS scanner and adjusting a drive frequency of the drive signal based on the intensity factor. The intensity could represent a single intensity factor for multiple laser beams projected onto the MEMS scanner. The method could also include delaying the adjustment of the drive frequency to allow the resonant frequency change to take affect in the MEMS scanner. Delaying the adjustment could include delaying delivery of the intensity factor such that the intensity factor is provided coincident with the resonant frequency change of the MEMS scanner.
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