Optical pickup device and recording/reproduction device

OPT OpenIR > 半导体激光器专利数据库

	Optical pickup device and recording/reproduction device
其他题名	Optical pickup device and recording/reproduction device
	NAKATANI, MORIO; NAGATOMI, KENJI; MATSUMURA, YOSHIYUKI; TAKAHASHI, SEIICHIRO
	2008-08-21
专利权人	SANYO ELECTRIC CO., LTD.
公开日期	2008-08-21
授权国家	世界知识产权组织
专利类型	发明申请
摘要	[PROBLEMS] To provide an optical pickup device and recording/reproduction device capable of rapidly and smoothly performing power setting of recording laser light for a recording medium of 2-photon recording type. [MEANS FOR SOLVING PROBLEMS] Recording light and reproduction light emitted from a fetom second laser (111) and a semiconductor laser (112) respectively are converged onto a target recording layer (15) by a recording/reproduction objective lens (118). Among the reflected light from the target recording layer (15), only the reproduction light is introduced to an APD (121) by a polarization beam splitter (115) of wavelength selection type. Accordingly, during recording, by monitoring a signal outputted from the APD (121), it is possible to judge whether the recording state form the target recording layer (15) appropriate. According to the judgment result, power of the recording light can be controlled.
其他摘要	[问题]提供一种光学拾取装置和记录/再现装置，其能够快速且平稳地执行用于双光子记录类型的记录介质的记录激光的功率设置。 [解决问题的手段]分别从胎儿第二激光器（111）和半导体激光器（112）发射的记录光和再现光通过记录/再现物镜（118）会聚到目标记录层（15）上。在来自目标记录层（15）的反射光中，仅通过波长选择型偏振分束器（115）将再现光引入APD（121）。因此，在记录期间，通过监视从APD（121）输出的信号，可以判断记录状态是否适合于目标记录层（15）。根据判断结果，可以控制记录光的功率。
主权项	-
申请日期	2008-02-04
专利号	WO2008099707A1
专利状态	未确认
申请号	PCT/JP2008/051795
公开（公告）号	WO2008099707A1
IPC 分类号	G11B7/125 \| G11B7/0045 \| G11B7/45 \| G11B7/135
专利代理人	SHIBANO, MASANORI
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/58225
专题	半导体激光器专利数据库
作者单位	SANYO ELECTRIC CO., LTD.
推荐引用方式 GB/T 7714	NAKATANI, MORIO,NAGATOMI, KENJI,MATSUMURA, YOSHIYUKI,et al. Optical pickup device and recording/reproduction device. WO2008099707A1[P]. 2008-08-21.