专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20080101203A1 Optical pickup 失效
公开(公告)号：US20080101203A1
公开(公告)日：2008-05-01
申请号：US11879261
申请日：2007-07-16
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.

2. 发明申请

US20080013436A1 Optical pickup 有权
公开(公告)号：US20080013436A1
公开(公告)日：2008-01-17
申请号：US11879244
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/135 , G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.

3. 发明申请

US20070263519A1 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US20070263519A1
公开(公告)日：2007-11-15
申请号：US11879311
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.
摘要翻译：一种光学拾取器包括：第一投影仪，用于投影第一波长的第一光束，以便相对于具有第一透光层的光盘记录和再现信息; 第二投影仪，用于投射比第一波长长的第二波长的第二光束，以便相对于具有第二透光层的光盘记录和再现信息; 第一和第二光束共同的物镜; 以及由具有衍射光栅和折射面的透镜制成的衍射光学元件，并设置在第一和第二投影仪与物镜之间的光路中。衍射光学元件被设定为满足预定的等式。结果，实现了使用单个聚焦装置来聚焦不同波长的光束的光学拾取器，以便分别记录和再现分别具有不同厚度的透光层的不同种类的光盘（记录介质）的信息并分别使用不同的最佳波长的光进行再现。

4. 发明授权

US07522508B2 Optical pickup 失效
公开(公告)号：US07522508B2
公开(公告)日：2009-04-21
申请号：US11879261
申请日：2007-07-16
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.

5. 发明授权

US07848207B2 Optical pickup 有权
标题翻译：光学拾音
公开(公告)号：US07848207B2
公开(公告)日：2010-12-07
申请号：US11879244
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.
摘要翻译：一种光学拾取器包括：第一投影仪，用于投影第一波长的第一光束，以便相对于具有第一透光层的光盘记录和再现信息; 第二投影仪，用于投射比第一波长长的第二波长的第二光束，以便相对于具有第二透光层的光盘记录和再现信息; 第一和第二光束共同的物镜; 以及由具有衍射光栅和折射面的透镜制成的衍射光学元件，并设置在第一和第二投影仪与物镜之间的光路中。衍射光学元件被设定为满足预定的等式。结果，实现了使用单个聚焦装置来聚焦不同波长的光束的光学拾取器，以便分别记录和再现分别具有不同厚度的透光层的不同种类的光盘（记录介质）的信息并分别使用不同的最佳波长的光进行再现。

6. 发明授权

US07606134B2 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US07606134B2
公开(公告)日：2009-10-20
申请号：US11879310
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.
摘要翻译：一种光学拾取器包括：第一投影仪，用于投影第一波长的第一光束，以便相对于具有第一透光层的光盘记录和再现信息; 第二投影仪，用于投射比第一波长长的第二波长的第二光束，以便相对于具有第二透光层的光盘记录和再现信息; 第一和第二光束共同的物镜; 以及由具有衍射光栅和折射面的透镜制成的衍射光学元件，并设置在第一和第二投影仪与物镜之间的光路中。衍射光学元件被设定为满足预定的等式。结果，实现了使用单个聚焦装置来聚焦不同波长的光束的光学拾取器，以便分别记录和再现分别具有不同厚度的透光层的不同种类的光盘（记录介质）的信息并分别使用不同的最佳波长的光进行再现。

7. 发明授权

US07471610B2 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US07471610B2
公开(公告)日：2008-12-30
申请号：US11879311
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.
摘要翻译：一种光学拾取器包括：第一投影仪，用于投影第一波长的第一光束，以便相对于具有第一透光层的光盘记录和再现信息; 第二投影仪，用于投射比第一波长长的第二波长的第二光束，以便相对于具有第二透光层的光盘记录和再现信息; 第一和第二光束共同的物镜; 以及由具有衍射光栅和折射面的透镜制成的衍射光学元件，并设置在第一和第二投影仪与物镜之间的光路中。衍射光学元件被设定为满足预定的等式。结果，实现了使用单个聚焦装置来聚焦不同波长的光束的光学拾取器，以便记录和再现分别具有不同厚度的透光层的不同种类的光盘（记录介质）的信息并分别使用不同的最佳波长的光进行再现。

8. 发明申请

US20080013435A1 Optical pickup 失效
公开(公告)号：US20080013435A1
公开(公告)日：2008-01-17
申请号：US11879310
申请日：2007-07-17
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.

9. 发明授权

US07260047B2 Optical pickup that uses light sources with different wavelengths for each of multiple recording mediums 有权
标题翻译：对于多个记录介质，使用不同波长的光源的光学拾取器
公开(公告)号：US07260047B2
公开(公告)日：2007-08-21
申请号：US10625709
申请日：2003-07-22
申请人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
发明人： Sumito Nishioka , Nobuo Ogata , Ikuo Nakano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G02B27/42 , G11B7/1275 , G11B7/1353 , G11B7/139 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light beam of a second wavelength longer than the first wavelength so as to record and reproduce information with respect to an optical disk having a second light transmissive layer; an objective lens common to the first and second light beams; and a diffraction optical element made of a lens with a diffraction grating and a refracting face and disposed in an optical path between the first and second projectors and the objective lens. The diffraction optical element is set to satisfy a predetermined equation. As a result, an optical pickup is realized that uses a single focusing means to focus light beams of different wavelengths, so as to record and reproduce information with respect to different kinds of optical disks (recording media) respectively having light transmissive layers of different thicknesses and respectively using different optimum wavelengths of light for reproducing.
摘要翻译：一种光学拾取器包括：第一投影仪，用于投影第一波长的第一光束，以便相对于具有第一透光层的光盘记录和再现信息; 第二投影仪，用于投射比第一波长长的第二波长的第二光束，以便相对于具有第二透光层的光盘记录和再现信息; 第一和第二光束共同的物镜; 以及由具有衍射光栅和折射面的透镜制成的衍射光学元件，并设置在第一和第二投影仪与物镜之间的光路中。衍射光学元件被设定为满足预定的等式。结果，实现了使用单个聚焦装置来聚焦不同波长的光束的光学拾取器，以便分别记录和再现分别具有不同厚度的透光层的不同种类的光盘（记录介质）的信息并分别使用不同的最佳波长的光进行再现。

10. 发明授权

US07075865B2 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US07075865B2
公开(公告)日：2006-07-11
申请号：US10461048
申请日：2003-06-13
申请人： Sumito Nishioka , Nobuo Ogata
发明人： Sumito Nishioka , Nobuo Ogata
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1369 , G11B7/1378 , G11B7/13922 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup includes a semiconductor laser for emitting light at a wavelength λ1 and a semiconductor laser for emitting light at a different wavelength λ2 from the wavelength λ1. The light at the wavelength λ1 transmitted through an objective lens forms a light-collecting spot on an optical disk to record/reproduce information thereon. The light at the wavelength λ2 transmitted through the objective lens forms a light-collecting spot on an optical disk to record/reproduce information thereon, the two optical disks having different substrate thicknesses. Between the semiconductor laser and the objective lens is there provided a combination-type diffractive element fabricated by combining two raw materials having different refractive index behaviors in relation to wavelength at a combining plane shaped as a grating. The structure facilitates good recording/reproduction on the two types of recording media irrespective of the reproduction wavelengths or substrate thicknesses of the recording media.
摘要翻译：光拾取器包括用于发射波长为λ1的光的半导体激光器和用于从波长λ1发射不同波长λ2的光的半导体激光器。透过物镜的波长λ1的光形成发光元件，在光盘上收集点以在其上记录/再现信息。通过物镜透射的波长λ2的光在光盘上形成光收集点以在其上记录/再现信息，两个光盘具有不同的衬底厚度。在半导体激光器和物镜之间提供了一种组合型衍射元件，其通过将具有不同折射率行为的两种原材料相对于形成为光栅的组合平面处的波长相组合而制造。该结构有助于在两种类型的记录介质上良好的记录/再现，而与记录介质的再现波长或衬底厚度无关。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式