发明申请
- 专利标题: Objective optical element and optical pickup apparatus
- 专利标题(中): 物镜光学元件和光学拾取装置
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申请号: US11133349申请日: 2005-05-20
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公开(公告)号: US20050265150A1公开(公告)日: 2005-12-01
- 发明人: Hiroshi Hirayama , Tohru Kimura
- 申请人: Hiroshi Hirayama , Tohru Kimura
- 专利权人: KONICA MINOLTA OPTO, INC.
- 当前专利权人: KONICA MINOLTA OPTO, INC.
- 优先权: JPJP2004-154702 20040525; JPJP2004-234297 20040811
- 主分类号: G11B7/00
- IPC分类号: G11B7/00 ; G11B7/125 ; G11B7/135
摘要:
An objective optical element for use in an optical pickup apparatus having: a first light source for emitting a first light flux; a second light source for emitting a second light flux; an objective optical element, the objective optical element includes: an optical surface including a common area and an exclusive area; and a wavelength selective film formed on at least one of the common area and the exclusive area; wherein the common area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is formed into a converged spot on the information recording surface, and the exclusive area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is not formed into a converged spot on the information recording surface.
公开/授权文献
- US07512055B2 Objective optical element and optical pickup apparatus 公开/授权日:2009-03-31
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