发明申请
- 专利标题： Optical pickup apparatus and objective optical element
- 专利标题（中）： 光学拾取装置和物镜光学元件
-
申请号： US11222137申请日： 2005-09-09
-
公开(公告)号： US20060077793A1公开(公告)日： 2006-04-13
- 发明人: Tohru Kimura , Yuichi Atarashi , Kiyono Ikenaka , Kenji Ogiwara , Eiji Nomura
- 申请人： Tohru Kimura , Yuichi Atarashi , Kiyono Ikenaka , Kenji Ogiwara , Eiji Nomura
- 专利权人： KONICA MINOLTA OPTO, INC.
- 当前专利权人： KONICA MINOLTA OPTO, INC.
- 优先权： JPJP2004-268217 20040915; JPJP2004-296782 20041008; JPJP2004-297592 20041012
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.
公开/授权文献
- US07821904B2 Optical pickup apparatus and objective optical element 公开/授权日：2010-10-26
信息查询
IPC分类:
