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    OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
    4.
    发明公开
    OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE 审中-公开
    OPTISCHE AUFNAHMEVORTHHTUNG，OPTISCHES OBJEKTIVELEMENT AND OPTISCHE INFORMATIONSAUFZEICHNUNGS- UND -WIEDERGABEVORRICHTUNG

    公开(公告)号：EP1993094A4

    公开(公告)日：2009-05-06

    申请号：EP07714669

    申请日：2007-02-21

    申请人： KONICA MINOLTA OPTO INC

    发明人： NAKAMURA KENTAROU ,  NOMURA EIJI ,  MORI NOBUYOSHI ,  OTA KOHEI

    IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/09 ,  G11B7/125

    CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

    摘要： Provided are an optical pickup device, an objective optical element, and an optical information recording/reproducing device capable of recording and/or reproducing information to/from optical discs of different types in a compatible manner. The optical pickup device includes a first light source, a second light source, a third light source, and an objective optical element. The objective optical element has an optical surface having at least two areas, i.e., a central area and a peripheral area around the central area. The central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element gathers the light flux passing through the central area and the peripheral area of the objective optical element so as to respectively record and/or reproduce information onto/from an information recording surface of a predetermined optical disc. Moreover, the first optical path difference giving structure has a coaxial circular band structure having a step and the step difference amount of the first optical path difference giving structure has a predetermined step difference amount.

    摘要翻译： 提供了一种光学拾取装置，物镜光学元件和光学信息记录/再现装置，其能够以兼容的方式向/从不同类型的光盘记录和/或再现信息。 该光学拾取装置包括第一光源，第二光源，第三光源和物镜光学元件。 物镜光学元件具有光学表面，该光学表面具有至少两个区域，即中心区域和中心区域周围的外围区域。 中央区域具有第一光程差赋予结构并且外围区域具有第二光程差赋予结构。 物镜光学元件聚集穿过物镜光学元件的中心区域和周边区域的光束，以分别将信息记录到/从预定光盘的信息记录表面上再现信息。 此外，第一光程差赋予结构具有具有台阶的同轴圆环带结构，并且第一光程差赋予结构的台阶差量具有预定的阶差量。

    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS
    6.
    发明公开
    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS 审中-公开
    OPTISCHE AUFNAHMEVORTHHTUNG，OPTISCHES OBJEKTIVELEMENT AND OPTISCHE INFORMATIONSAUFZEICHNUNGS- UND -WIEDERGABEVORRICHTUNG

    公开(公告)号：EP2001020A4

    公开(公告)日：2009-04-29

    申请号：EP07714667

    申请日：2007-02-21

    申请人： KONICA MINOLTA OPTO INC

    发明人： NAKAMURA KENTAROU ,  NOMURA EIJI ,  MORI NOBUYOSHI ,  OTA KOHEI

    IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/09 ,  G11B7/125

    CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

    摘要： Provided are an optical pickup apparatus, an objective optical element, and an optical information recording and reproducing apparatus, capable of recording and/or reproducing information in a compatible way to different types of optical discs. The optical pickup apparatus comprises a first light source that emits a first light flux, a second light source that emits a second light flux, a third light source that emits a third light flux, and an objective optical element. The optical surface of the objective optical element has at least two areas of a central area and a peripheral area surrounding the central area, wherein the central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element focuses the light fluxes passing through its central and peripheral areas on the information recording surfaces of respective prescribed optical discs so that the information can be recorded and/or reproduced. The first optical path difference giving structure is formed by superimposing a first basic structure and a second basic structure having respective predetermined structures on each other.

    摘要翻译： 提供了一种能够以兼容的方式对不同类型的光盘记录和/或再现信息的光学拾取装置，物镜光学元件和光学信息记录和再现装置。 该光学拾取装置包括发射第一光通量的第一光源，发射第二光通量的第二光源，发射第三光通量的第三光源以及物镜光学元件。 物镜光学元件的光学表面具有中心区域和围绕中心区域的外围区域的至少两个区域，其中中心区域具有第一光学差异给予结构并且外围区域具有第二光学差异给予结构 。 物镜光学元件将通过其中央和周边区域的光束聚焦在各个指定光盘的信息记录表面上，从而可以记录和/或再现信息。 第一光程差赋予结构通过将具有预定结构的第一基础结构和第二基础结构彼此叠加而形成。

    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS
    7.
    发明公开
    OPTICAL PICKUP APPARATUS, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS 审中-公开
    OPTISCHE AUFNAHMEVORTHHTUNG，OPTISCHES OBJEKTIVELEMENT AND OPTISCHE INFORMATIONSAUFZEICHNUNGS- UND -WIEDERGABEVORRICHTUNG

    公开(公告)号：EP1993093A4

    公开(公告)日：2009-04-22

    申请号：EP07714668

    申请日：2007-02-21

    申请人： KONICA MINOLTA OPTO INC

    发明人： NAKAMURA KENTAROU ,  NOMURA EIJI ,  MORI NOBUYOSHI ,  OTA KOHEI

    IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/09 ,  G11B7/125

    CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

    摘要： Provided are an optical pickup apparatus, an objective optical element, and an optical information recording and reproducing apparatus, capable of recording and/or reproducing information in a compatible way to different types of optical discs. The optical pickup apparatus comprises a first light source, a second light source, a third light source, and an objective optical element. The optical surface of the objective optical element has at least two areas of a central area and a peripheral area surrounding the central area, wherein the central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element focuses the light fluxes passing through its central and peripheral areas on the information recording surfaces of respective prescribed optical discs so that the information can be recorded and/or reproduced. The optical pickup apparatus has such wavelength dependence of spherical aberration that the spherical aberration change caused by the temperature change of the objective optical element is corrected by the temperature dependent wavelength change of the light flux emitted from the first light source.

    摘要翻译： 提供了一种能够以兼容的方式对不同类型的光盘记录和/或再现信息的光学拾取装置，物镜光学元件和光学信息记录和再现装置。 该光学拾取装置包括第一光源，第二光源，第三光源和物镜光学元件。 物镜光学元件的光学表面具有中心区域和围绕中心区域的外围区域的至少两个区域，其中中心区域具有第一光学差异给予结构并且外围区域具有第二光学差异给予结构 。 物镜光学元件将通过其中央和周边区域的光束聚焦在各个指定光盘的信息记录表面上，从而可以记录和/或再现信息。 光学拾取装置具有这样的球面像差的波长依赖性，使得由物镜光学元件的温度变化引起的球面像差变化通过从第一光源发射的光通量的温度依赖波长变化而被校正。

    OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
    9.
    发明公开
    OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE 有权
    OPTISCHE AUFNAHMEVORTHHTUNG，OPTISCHES OBJEKTIVELEMENT AND OPTISCHE INFORMATIONSAUFZEICHNUNGS- UND -WIEDERGABEVORRICHTUNG

    公开(公告)号：EP1990801A4

    公开(公告)日：2009-04-29

    申请号：EP07714670

    申请日：2007-02-21

    申请人： KONICA MINOLTA OPTO INC

    发明人： NAKAMURA KENTAROU ,  NOMURA EIJI ,  MORI NOBUYOSHI ,  OTA KOHEI

    IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B13/00 ,  G02B13/18 ,  G11B7/09 ,  G11B7/125

    CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

    摘要： Provided are an optical pickup device, an objective optical element, and an optical information recording/reproducing device capable of recording and/or reproducing information to/from optical discs of different types in a compatible manner. The optical pickup device includes a first light source for emitting a first light flux, a second light source for emitting a second light flux, a third light source for emitting a third light flux, and an objective optical element. The objective optical element has an optical surface having at least two areas, i.e., a central area and a peripheral area around the central area. The central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element gathers the light fluxes passing through the central area and the peripheral area of the objective optical element so as to respectively record and/or reproduce information onto/from an information recording surface of a predetermined optical disc. Furthermore, a focal distance of the objective optical element with respect to the third light flux satisfies a predetermined condition.

    摘要翻译： 提供了一种光学拾取装置，物镜光学元件和光学信息记录/再现装置，其能够以兼容的方式向/从不同类型的光盘记录和/或再现信息。 该光学拾取装置包括用于发射第一光通量的第一光源，用于发射第二光通量的第二光源，用于发射第三光通量的第三光源以及物镜光学元件。 物镜光学元件具有光学表面，该光学表面具有至少两个区域，即中心区域和中心区域周围的外围区域。 中央区域具有第一光程差赋予结构并且外围区域具有第二光程差赋予结构。 物镜光学元件聚集穿过物镜光学元件的中心区域和周边区域的光束，从而分别在预定光盘的信息记录表面上记录和/或再现信息。 此外，物镜光学元件相对于第三光束的焦距满足预定条件。