发明公开
EP1592001A3 Beam shaping lens, lens part, mounting plate, optical head, optical information recording and reproducing apparatus, computer, image recording and reproducing apparatus, image reproducing apparatus, server and car navigation system
有权
光束整形透镜，透镜安装板，光学头，光学信息记录和再现装置，电脑，视频记录和再现装置，图像再现装置，服务器和汽车导航系统
- 专利标题： Beam shaping lens, lens part, mounting plate, optical head, optical information recording and reproducing apparatus, computer, image recording and reproducing apparatus, image reproducing apparatus, server and car navigation system
- 专利标题（中）： 光束整形透镜，透镜安装板，光学头，光学信息记录和再现装置，电脑，视频记录和再现装置，图像再现装置，服务器和汽车导航系统
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申请号： EP05009136.2申请日： 2005-04-26
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公开(公告)号： EP1592001A3公开(公告)日： 2006-11-02
- 发明人: Tanaka, Toshiyasu , Komma, Yoshiaki , Sano, Kousei , Arai, Akihiro
- 申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 申请人地址： 1006, Oaza-Kadoma Kadoma-shi, Osaka 571-8501 JP
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： 1006, Oaza-Kadoma Kadoma-shi, Osaka 571-8501 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP2004130958 20040427
- 主分类号： G11B7/125
- IPC分类号： G11B7/125 ; G11B7/135 ; G11B7/22 ; G02B3/06 ; G02B7/02
摘要：
A beam shaping lens of shaping an incident beam having an elliptic cross section into an outgoing beam having a substantially circular cross section comprises a first plane (22) which is a cylindrical surface having a generating line curving to form a non-circular cylindrical surface as an incidence side of the incident beam and a second plane (20) which is a circular cylindrical surface as an outgoing side of the outgoing beam, wherein a distance between both ends of the generating line of the circular cylindrical surface is larger than a distance between both ends of the generating line of the non-circular cylindrical surface.
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