发明名称 |
METHOD AND APPARATUS FOR READING FROM A NEAR-FIELD OPTICAL RECORDING MEDIUM, AND NEAR-FIELD LENS FOR THE APPARATUS |
摘要 |
A method and an apparatus for reading from a near-field optical recording medium are described. The apparatus includes: an optical system for generating a signal beam and a reference beam; a near-field lens for illuminating the signal beam onto the near-field optical recording medium, for collimating a reflected signal beam, and for reflecting the reference beam; and at least a first detector and a second detector for obtaining a homodyne detection signal from the reflected signal beam and the reflected reference beam. |
申请公布号 |
US2012257488(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
US201013517469 |
申请日期 |
2010.12.07 |
申请人 |
KNAPPMANN STEPHAN;PRZYGODDA FRANK |
发明人 |
KNAPPMANN STEPHAN;PRZYGODDA FRANK |
分类号 |
G11B7/1387;G11B7/125;G11B7/135;G11B7/1353;G11B7/1376;G11B7/1395 |
主分类号 |
G11B7/1387 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|