发明名称 |
Optical pickup and opto-magnetic signal reproducing apparatus |
摘要 |
An optical pickup includes a polarization component separation element which is formed as a unit or single piece of birefringence material. The separation element is not laminated obviating the need to carefully match the optical axes of the laminated pieces. Multiple reflections within the birefringent crystal which comprises the separation element improves the separation and resolution of the polarized components which are extracted from a laser beam reflected back off the media surface.
|
申请公布号 |
US5796701(A) |
申请公布日期 |
1998.08.18 |
申请号 |
US19960667835 |
申请日期 |
1996.06.20 |
申请人 |
SONY CORPORATION |
发明人 |
NISHI, NORIAKI;SAITO, KIMIHIRO;MATSUMOTO, SHUICHI;HATTORI, MASATO |
分类号 |
G11B7/09;G11B7/12;G11B7/135;G11B11/105;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/09 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|