首页>
外国专利>
Mirror angle measurement and servo control apparatus for holographic digital data storage system
Mirror angle measurement and servo control apparatus for holographic digital data storage system
展开▼
机译:全息数字数据存储系统的镜角测量和伺服控制装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A mirror angle measurement and a servo control apparatus for a Holographic Digital Data Storage (HDDS) system is disclosed. The mirror angle measurement apparatus includes a first mirror having a first reflecting surface by which the reference beam is reflected toward the holographic medium, and a second reflecting surface by which a control beam is reflected to adjust the incident angle of the reference beam; a transmission unit for causing control beam to the second reflecting surface; a second mirror for returning the control beam to the second reflecting surface; and a photo detector unit for detecting the amounts of the control beam. The angle of the first mirror is adjusted based on a comparison result between the amounts of the control beam detected by the photo detector unit.
展开▼