Invention Grant
US08576407B2 Contactless optical glide head using at least two concurrent interference signals and a multi-channel light detector for detecting disk asperities
失效
使用至少两个并发干涉信号的非接触式光滑头和用于检测磁盘粗糙度的多通道光检测器
- Patent Title: Contactless optical glide head using at least two concurrent interference signals and a multi-channel light detector for detecting disk asperities
- Patent Title (中): 使用至少两个并发干涉信号的非接触式光滑头和用于检测磁盘粗糙度的多通道光检测器
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Application No.: US12645205Application Date: 2009-12-22
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Publication No.: US08576407B2Publication Date: 2013-11-05
- Inventor: Karl Flechsig , Gurinder Singh , Timothy Strand
- Applicant: Karl Flechsig , Gurinder Singh , Timothy Strand
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Main IPC: G01B11/02
- IPC: G01B11/02
Abstract:
A device for detecting disk asperities. The device includes an optical glide head. The glide head is not required to physically contact a disk for detection of the disk asperities. The optical glide head includes a waveguide configured to transmit light onto the disk and receive reflected light from the disk.
Public/Granted literature
- US20110149299A1 CONTACTLESS OPTICAL GLIDE HEAD Public/Granted day:2011-06-23
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