发明名称 |
Optical head and optical disc apparatus |
摘要 |
An optical head and optical disc apparatus according to the present invention can guide each of optional light rays of different wavelength from a plurality of light sources to a recording medium through a single optical system, and can play back the signal from the reflected light from the recording medium through a single light receiving system.
|
申请公布号 |
US2004125737(A1) |
申请公布日期 |
2004.07.01 |
申请号 |
US20030651039 |
申请日期 |
2003.08.29 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
IWATA KATSUO;MARUYAMA SUMITAKA;NAGATA KAZUHIRO |
分类号 |
G11B7/125;G11B7/135;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/125 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|