发明名称 |
Aberration correcting unit, optical pickup apparatus, and recording/reproducing apparatus |
摘要 |
An aberration correcting unit includes: a first element having a liquid crystal sandwiched between first electrode layers, the first element having a first predetermined orientation direction and providing a light with a phase change by applying a voltage; a second element having a liquid crystal sandwiched between the second electrode layers, the second element having a second predetermined orientation direction that is substantially perpendicular to the first orientation direction and providing a light with a phase change by applying a voltage; and a polarization-direction changing element which is arranged between a light source of the light beam and the first and second elements to change a polarization direction of the light beam. <IMAGE> |
申请公布号 |
EP1158335(A3) |
申请公布日期 |
2004.06.23 |
申请号 |
EP20010111961 |
申请日期 |
2001.05.21 |
申请人 |
PIONEER CORPORATION |
发明人 |
OGASAWARA, MASAKAZU;IWASAKI, MASAYUKI |
分类号 |
G02F1/13;G02F1/1347;G02F1/29;G11B7/00;G11B7/085;G11B7/09;G11B7/125;G11B7/135 |
主分类号 |
G02F1/13 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|