Optical pickup apparatus and information recording/reproduction apparatus

OPT OpenIR > 半导体激光器专利数据库

	Optical pickup apparatus and information recording/reproduction apparatus
其他题名	Optical pickup apparatus and information recording/reproduction apparatus
	YANO, TAIICHIRO
	2007-12-13
专利权人	SHARP KABUSHIKI KAISHA
公开日期	2007-12-13
授权国家	美国
专利类型	发明申请
摘要	An optical pickup apparatus and an information recording/reproduction apparatus that can reduce flare light generated by an objective lens and reduce stray light are provided. An erecting mirror is provided on an optical path between a light source and an objective lens. An incident face on the erecting mirror is provided with a wavelength selective film having a first region that reflects a light beam having a first wavelength emitted from a first semiconductor laser device and that transmits a light beam having a second wavelength emitted from a second semiconductor laser device, and a second region that reflects light beams emitted from the first and the second semiconductor laser devices.
其他摘要	提供一种能够减少由物镜产生的闪烁光并减少杂散光的光学拾取装置和信息记录/再现装置。在光源和物镜之间的光路上设置正立镜。在正立镜上的入射面设置有波长选择膜，该波长选择膜具有第一区域和第二区域，该第一区域反射从第一半导体激光器件发射的具有第一波长的光束，并且透射从第二半导体激光器发射的具有第二波长的光束器件，以及反射从第一和第二半导体激光器器件发射的光束的第二区域。
主权项	An optical pickup apparatus, comprising: a light source for emitting light beams having oscillation wavelengths different from each other; an objective lens for focusing each light beam emitted from the light source on an optical recording medium corresponding to the light beam; a wavelength selective optical element provided on an optical path between the light source and the objective lens, for reflecting or transmitting an incident light beam depending on an oscillation wavelength thereof, and for guiding the reflected light beam to the objective lens; and a photodetector for detecting a light beam that is emitted from the light source and reflected by an information recording surface of the optical recording medium, wherein the wavelength selective optical element has a first region that reflects a light beam having the first oscillation wavelength emitted from the light source and that transmits a light beam having the second oscillation wavelength, and a second region that reflects the light beams emitted from the light source.
申请日期	2007-04-26
专利号	US20070286055A1
专利状态	失效
申请号	US11/790596
公开（公告）号	US20070286055A1
IPC 分类号	G11B7/00
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/58056
专题	半导体激光器专利数据库
作者单位	SHARP KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	YANO, TAIICHIRO. Optical pickup apparatus and information recording/reproduction apparatus. US20070286055A1[P]. 2007-12-13.