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1. 发明授权

US08009527B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08009527B2
公开(公告)日：2011-08-30
申请号：US11941488
申请日：2007-11-16
申请人： Shinichi Hamaguchi , Yuzo Shimizu , Daisuke Furukawa , Naoto Shimada , Toshihiro Kuroda , Toyonori Kusuhara , Hiroaki Yamamoto
发明人： Shinichi Hamaguchi , Yuzo Shimizu , Daisuke Furukawa , Naoto Shimada , Toshihiro Kuroda , Toyonori Kusuhara , Hiroaki Yamamoto
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1381 , G11B2007/0006
摘要： The optical pickup device according to the present invention includes: a light source which emits a first light at a first wavelength, a second light at a second wavelength and a third light at a third wavelength; an optical path combining unit which combines vectors of the first, second and third light emitted by the light source, and matches optical axes of the first light and the third light; a light collection unit which condenses the light from the optical path combining unit into the optical information storage medium; a diffraction element which diffracts reflected light from the optical information storage medium; a first photo detector, a second photo detector and a third photo detector which receives the diffracted light from the first diffraction element; and a prevention unit formed between the first diffraction element and the first photo detector, the second photo detector and the third photo detector, and which prevents irradiation of + first-order diffracted light diffracted by the first diffraction element into the first photo detector, the second photo detector, and the third photo detector.
摘要翻译：根据本发明的光拾取装置包括：发射第一波长的第一光，第二波长的第二光和第三波长的第三光的光源; 光路组合单元，其组合由所述光源发射的所述第一，第二和第三光的矢量，并且匹配所述第一光和所述第三光的光轴; 光收集单元，其将来自光路组合单元的光聚合到光信息存储介质中; 衍射元件，其衍射来自光学信息存储介质的反射光; 第一光检测器，第二光检测器和第三光检测器，其接收来自第一衍射元件的衍射光; 以及防止单元，形成在第一衍射元件和第一光电检测器，第二光电检测器和第三光电检测器之间，并且防止第一衍射元件衍射的+一级衍射光照射到第一光检测器中，第二光检测器和第三光检测器。

2. 发明申请

US20080137516A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20080137516A1
公开(公告)日：2008-06-12
申请号：US11941488
申请日：2007-11-16
申请人： Shinichi HAMAGUCHI , Yuzo SHIMIZU , Daisuke FURUKAWA , Naoto SHIMADA , Toshihiro KURODA , Toyonori KUSUHARA , Hiroaki YAMAMOTO
发明人： Shinichi HAMAGUCHI , Yuzo SHIMIZU , Daisuke FURUKAWA , Naoto SHIMADA , Toshihiro KURODA , Toyonori KUSUHARA , Hiroaki YAMAMOTO
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1381 , G11B2007/0006
摘要： The optical pickup device according to the present invention includes: a light source which emits a first light at a first wavelength, a second light at a second wavelength and a third light at a third wavelength; an optical path combining unit which combines vectors of the first, second and third light emitted by the light source, and matches optical axes of the first light and the third light; a light collection unit which condenses the light from the optical path combining unit into the optical information storage medium; a diffraction element which diffracts reflected light from the optical information storage medium; a first photo detector, a second photo detector and a third photo detector which receives the diffracted light from the first diffraction element; and a prevention unit formed between the first diffraction element and the first photo detector, the second photo detector and the third photo detector, and which prevents irradiation of + first-order diffracted light diffracted by the first diffraction element into the first photo detector, the second photo detector, and the third photo detector.
摘要翻译：根据本发明的光拾取装置包括：发射第一波长的第一光，第二波长的第二光和第三波长的第三光的光源; 光路组合单元，其组合由所述光源发射的所述第一，第二和第三光的矢量，并且匹配所述第一光和所述第三光的光轴; 光收集单元，其将来自光路组合单元的光聚合到光信息存储介质中; 衍射元件，其衍射来自光学信息存储介质的反射光; 第一光检测器，第二光检测器和第三光检测器，其接收来自第一衍射元件的衍射光; 以及防止单元，形成在第一衍射元件和第一光电检测器，第二光电检测器和第三光电检测器之间，并且防止第一衍射元件衍射的+一级衍射光照射到第一光检测器中，第二光检测器和第三光检测器。

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