专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

22. 发明授权

US07557993B2 Optical pickup and optical disc device 失效
标题翻译：光学拾取和光盘设备
公开(公告)号：US07557993B2
公开(公告)日：2009-07-07
申请号：US11838393
申请日：2007-08-14
申请人： Masaki Arai
发明人： Masaki Arai
IPC分类号： G02B27/14
CPC分类号： G02B27/283 , G11B7/1275 , G11B7/1356 , G11B7/1376 , G11B7/13925 , G11B2007/0006
摘要： The present invention provides an optical pickup corresponding to plural kinds of optical discs which can be downsized and simplified, and can compensate the spherical aberration. Optical path separation for separating the optical path of a first and a second optical beams as approaching beams to an optical disc 100 into optical paths directed to a first objective lens 51 and a second objective lens 52 corresponding to the optical beams, optical path combination for combining different optical paths of a first and a second reflected optical beams as returning beams which come in from the first and second objective lenses 51, 52, and approach-and-return optical path separation for separating the optical path of the approaching beam and the optical path of the returning beam are realized by the beam separation/composition prism 44. Furthermore, a first collimator lens 45 and a second collimator lens 47 are arranged between the corresponding first and second objective lenses 51, 52 and the beam separation/composition prism 44.
摘要翻译：本发明提供一种对应于可以被小型化和简化的多种光盘的光学拾取器，并且可以补偿球面像差。光路分离用于将第一和第二光束的光路分离成将光束接近光盘100转换成对应于光束的指向第一物镜51和第二物镜52的光路，光路组合组合第一和第二反射光束的不同光路作为从第一和第二物镜51,52进入的返回光束，以及接近和返回光路分离，用于分离接近光束的光路和返回光束的光路由光束分离/合成棱镜44实现。此外，第一准直透镜45和第二准直透镜47布置在相应的第一和第二物镜51,52之间以及光束分离/合成棱镜 44。

IPRDB

热门服务

关于我们

友情链接

联系方式