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公开(公告)号：US08531926B2
公开(公告)日：2013-09-10
申请号：US13411645
申请日：2012-03-05
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B7/1374 , G11B7/1392 , G11B7/24038 , G11B2007/0006 , G11B2007/0013
摘要： An optical system for optical pickup includes a magnification conversion optical element moving along an optical axis direction in accordance with each of optical recording medium recording surfaces, and an objective lens element converging a light beam incident through the magnification conversion optical element, to form a spot on a corresponding one of the recording surfaces, and satisfies the following formula: 4.0×10−4
摘要翻译： 用于光学拾取器的光学系统包括根据每个光学记录介质记录表面沿着光轴方向移动的放大率转换光学元件和会聚入射通过倍率转换光学元件的光束的物镜元件，以形成点 在相应的一个记录表面上，满足下列公式：4.0×10-4
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公开(公告)号：US20120075978A1
公开(公告)日：2012-03-29
申请号：US13248038
申请日：2011-09-29
IPC分类号： G11B7/1353 , G02B27/42
CPC分类号： G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner part R21 and an outer part R22, respectively. A curved surface M211 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the inner part R21, and a curved surface M212 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the outer part R22 are smoothly connected to each other. Even when wavelength of the light source and/or the environmental temperature change, a phase shift does not occur between the inner part R21 and the outer part R22, and a decrease in diffraction efficiency and occurrence of an aberration can be suppressed.
摘要翻译： 公开了能够抑制像差的发生的物镜元件。 分别具有不同高度和周期（间距）的锯齿状衍射结构分别设置在内部部分R21和外部部分R22上。 在内部部件R21上设置的锯齿状衍射结构的凹部和突起的中间水平面延伸的曲面M211，以及设置在上述锯齿状衍射结构的中间水平的锯齿状衍射结构的中间水平面的弯曲面M212 外部部件R22彼此平滑地连接。 即使在光源的波长和/或环境温度发生变化的情况下，内部部件R21和外部部件R22之间也不会发生相位偏移，并且可以抑制衍射效率的降低和像差的发生。
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公开(公告)号：US20080165660A1
公开(公告)日：2008-07-10
申请号：US11969417
申请日：2008-01-04
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G11B7/1374 , G11B2007/0006
摘要： The present invention provides an objective lens system for forming a spot of a laser beam of λ wavelength on a first information recording surface through a disc protective layer having a first thickness and a second information recording surface through a disc protective layer having a second thickness greater than the first thickness, the objective lens system including: an objective lens having at least one diffraction structure for deflecting incident light by diffraction and at least two refractive surfaces for deflecting the incident light by refraction, wherein the diffraction structure divides the incident light into m1th order diffracted light (m1 is an integer) corresponding to the first information recording surface and m2th order diffracted light (m2 is an integer different from m1) corresponding to the second information recording surface and has negative power to diverge the m2th order diffracted light.
摘要翻译： 本发明提供一种物镜系统，用于通过具有第一厚度的盘保护层和第二信息记录表面通过具有第二厚度的盘保护层在第一信息记录表面上形成λ波长的激光束的点 物镜系统包括：具有至少一个用于通过衍射偏转入射光的衍射结构的物镜和用于通过折射偏转入射光的至少两个折射表面，其中衍射结构将入射光分为m1 对应于第一信息记录表面的第二级衍射光（m1是整数）和与第二级对应的第二级衍射光（m2是不同于m1的整数） 信息记录表面并且具有负功率以分散m2 /次级衍射光。
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4.发明申请Optical pickup lens device and information recording and reproducing device using the same 有权光学拾取镜头装置及其使用的信息记录和再现装置公开(公告)号：US20060164735A1
公开(公告)日：2006-07-27
申请号：US11385829
申请日：2006-03-22
IPC分类号： G02B9/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, collimating means for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating means being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating means to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
摘要翻译： 一种光学拾取透镜装置，从光源侧依次包括用于将光束变换为平行光或预定的会聚或发散光线的准直装置，准直装置沿着光束的光轴的方向可移动地保持 从光源发射的光线; 用于允许从准直装置发射的光束穿过其中的像差校正元件; 以及具有0.8以上的数值孔径的物镜元件，并且将来自像差校正元件的光束会聚在信息记录介质上以形成点。 像差校正元件和物镜元件在与光轴正交的方向上一体地保持在一起，以在信息记录介质上执行跟踪，并满足预定条件。
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公开(公告)号：US08767518B2
公开(公告)日：2014-07-01
申请号：US13248038
申请日：2011-09-29
IPC分类号： G11B7/12
CPC分类号： G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner part R21 and an outer part R22, respectively. A curved surface M211 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the inner part R21, and a curved surface M212 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the outer part R22 are smoothly connected to each other. Even when wavelength of the light source and/or the environmental temperature change, a phase shift does not occur between the inner part R21 and the outer part R22, and a decrease in diffraction efficiency and occurrence of an aberration can be suppressed.
摘要翻译： 公开了能够抑制像差的发生的物镜元件。 分别具有不同高度和周期（间距）的锯齿状衍射结构分别设置在内部部分R21和外部部分R22上。 在内部部件R21上设置的锯齿状衍射结构的凹部和突起的中间水平面延伸的曲面M211，以及设置在上述锯齿状衍射结构的中间水平的锯齿状衍射结构的中间水平面的弯曲面M212 外部部件R22彼此平滑地连接。 即使在光源的波长和/或环境温度发生变化的情况下，内部部件R21和外部部件R22之间也不会发生相位偏移，并且可以抑制衍射效率的降低和像差的发生。
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6.发明授权公开(公告)号：US07221521B2
公开(公告)日：2007-05-22
申请号：US11385829
申请日：2006-03-22
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, a collimating lens for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating lens being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating lens to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
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公开(公告)号：US20120163155A1
公开(公告)日：2012-06-28
申请号：US13411645
申请日：2012-03-05
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B7/1374 , G11B7/1392 , G11B7/24038 , G11B2007/0006 , G11B2007/0013
摘要： An optical system for optical pickup includes a magnification conversion optical element moving along an optical axis direction in accordance with each recording surface and an objective lens element converging a light beam incident through the magnification conversion optical element, to form a spot on a corresponding recording surface of the recording surfaces, and satisfies the following formula. 4.0×10−4
摘要翻译： 一种用于光学拾取器的光学系统，包括根据每个记录表面沿着光轴方向移动的放大率转换光学元件和会聚入射通过倍率转换光学元件的光束的物镜元件，以在对应的记录表面上形成光点 的记录面，满足下式。 4.0×10-4
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8.发明授权公开(公告)号：US07068445B2
公开(公告)日：2006-06-27
申请号：US10535339
申请日：2004-07-09
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, collimating means for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating means being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating means to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
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9.发明申请COMPOUND OBJECTIVE LENS, OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, AND INFORMATION PROCESSING DEVICE 有权化合物目标透镜，光学头装置，光信息装置和信息处理装置公开(公告)号：US20120023514A1
公开(公告)日：2012-01-26
申请号：US13257380
申请日：2011-01-07
IPC分类号： G02B27/42 , G11B17/028 , G11B7/13
CPC分类号： G11B7/13922 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.
摘要翻译： 复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。 在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。 与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差 。 与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长 。 设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有 与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。
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10.发明授权公开(公告)号：US08305864B2
公开(公告)日：2012-11-06
申请号：US13257380
申请日：2011-01-07
IPC分类号： G11B7/00
CPC分类号： G11B7/13922 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.
摘要翻译： 复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。 在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。 与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差 。 与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长 。 设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有 与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。
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