公开(公告)号：US20060262427A1

公开(公告)日：2006-11-23

申请号：US11429988

申请日：2006-05-09

申请人： Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto ,  Toshiaki Katsuma

发明人： Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto ,  Toshiaki Katsuma

IPC分类号： G02B13/02 ,  G01J1/04

CPC分类号： G02B6/4206 ,  G02F1/167 ,  G02F2001/294

摘要： A coupling optical system for coupling light into an optical fiber of an optical communications system includes a liquid that includes a dispersion of microscopic particles and two transparent media that hold the liquid between them along an optical axis. The refractive power of the liquid is variable according to the electromagnetic field applied to the liquid to vary the migration of the microscopic particles of the dispersion within the liquid. The position of a light collecting point of the coupling optical system is adjustable based on the variation in the refractive power of the liquid so that light can be efficiently coupled into optical fibers at different distances along the optical axis from the coupling optical system. At the light collecting point, the end surface of an optical fiber collects light from a light source or another optical fiber. One or more collimator lenses may help converge the light.

摘要翻译： 用于将光耦合到光通信系统的光纤中的耦合光学系统包括液体，其包括微观颗粒的分散体和沿着光轴将液体保持在它们之间的两个透明介质。 液体的屈光力根据施加到液体的电磁场而变化，以改变液体中分散体的微观颗粒的迁移。 耦合光学系统的聚光点的位置可以基于液体的屈光力的变化来调节，使得光可以有效地耦合到光耦合光学系统沿光轴不同的距离。 在光收集点，光纤的端面收集来自光源或另一光纤的光。 一个或多个准直透镜可以帮助会聚光。

公开(公告)号：US07220064B2

公开(公告)日：2007-05-22

申请号：US11429988

申请日：2006-05-09

申请人： Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto ,  Toshiaki Katsuma

发明人： Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto ,  Toshiaki Katsuma

IPC分类号： G02B6/36 ,  G02B6/42 ,  G02B6/32 ,  G02B6/26 ,  G02B6/38 ,  G02B6/02 ,  G02B6/032 ,  G02B3/00 ,  G02B9/00 ,  G02B21/02 ,  G02B1/06 ,  G02B3/12 ,  G02B3/10

CPC分类号： G02B6/4206 ,  G02F1/167 ,  G02F2001/294

摘要： A coupling optical system for coupling light into an optical fiber of an optical communications system includes a liquid that includes a dispersion of microscopic particles and two transparent media that hold the liquid between them along an optical axis. The refractive power of the liquid is variable according to the electromagnetic field applied to the liquid to vary the migration of the microscopic particles of the dispersion within the liquid. The position of a light collecting point of the coupling optical system is adjustable based on the variation in the refractive power of the liquid so that light can be efficiently coupled into optical fibers at different distances along the optical axis from the coupling optical system. At the light collecting point, the end surface of an optical fiber collects light from a light source or another optical fiber. One or more collimator lenses may help converge the light.

摘要翻译： 用于将光耦合到光通信系统的光纤中的耦合光学系统包括液体，其包括微观颗粒的分散体和沿着光轴将液体保持在它们之间的两个透明介质。 液体的屈光力根据施加到液体的电磁场而变化，以改变液体中分散体的微观颗粒的迁移。 耦合光学系统的聚光点的位置可以基于液体的屈光力的变化来调节，使得光可以有效地耦合到光耦合光学系统沿光轴不同的距离。 在光收集点，光纤的端面收集来自光源或另一光纤的光。 一个或多个准直透镜可以帮助会聚光。

公开(公告)号：US07417806B2

公开(公告)日：2008-08-26

申请号：US11429989

申请日：2006-05-09

申请人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto

发明人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto

IPC分类号： G02B7/02

CPC分类号： G02B7/022 ,  G02B6/4206 ,  G02B6/423

摘要： A lens is equipped with a reference mounting surface that is abutted to a surface of a lens support member at the time of mounting the lens, wherein the reference mounting surface is arranged between a plane which is normal to the optical axis of the lens and includes a principal point on the incident light side of the lens and a plane which is normal to the optical axis of the lens and includes a principal point on the outgoing light side of the lens.

摘要翻译： 透镜配备有在安装透镜时抵靠透镜支撑构件的表面的参考安装表面，其中基准安装表面布置在垂直于透镜的光轴的平面之间并且包括 透镜的入射光侧的主要点和与透镜的光轴垂直的平面，并且包括透镜的出射光侧的主要点。

公开(公告)号：US20060256454A1

公开(公告)日：2006-11-16

申请号：US11429989

申请日：2006-05-09

申请人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto

发明人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Makoto Oomura ,  Yoko Yamamoto

IPC分类号： G02B7/02

CPC分类号： G02B7/022 ,  G02B6/4206 ,  G02B6/423

摘要： A lens is equipped with a reference mounting surface that is abutted to a surface of a lens support member at the time of mounting the lens, wherein the reference mounting surface is arranged between a plane which is normal to the optical axis of the lens and includes a principal point on the incident light side of the lens and a plane which is normal to the optical axis of the lens and includes a principal point on the outgoing light side of the lens.

摘要翻译： 透镜配备有在安装透镜时抵靠透镜支撑构件的表面的参考安装表面，其中基准安装表面布置在垂直于透镜的光轴的平面之间并且包括 透镜的入射光侧的主要点和与透镜的光轴垂直的平面，并且包括透镜的出射光侧的主要点。

公开(公告)号：US20060098555A1

公开(公告)日：2006-05-11

申请号：US11267513

申请日：2005-11-07

申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Masao Mori ,  Tetsuya Ori

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1369 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective optical system focuses light from a light source onto at least two different types of optical recording media having different substrate thicknesses in order to record or reproduce information on the optical recording media by using a variable refractive power element and an objective lens. The variable refractive power element may be a liquid crystal element with concentric zones that serves as a transparent plate having no convergence effect when no voltage is applied when selecting an AOD, DVD, or CD and as a converging lens when a voltage is applied when selecting a BD. Alternately, the variable refractive power element may electrically vary the refractive index of a nanoparticle dispersion or at least one liquid of a two-liquid lens element. A diffractive optical element may be used to assist in focusing light to four recording media. An optical pickup device includes the objective optical system.

公开(公告)号：US20050259554A1

公开(公告)日：2005-11-24

申请号：US11128279

申请日：2005-05-13

申请人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

发明人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective optical system is formed of a diffractive optical element with a diffractive surface formed on a planar ‘virtual surface’ (i.e., a surface that would be planar but for the diffractive structure) and an objective lens for focusing three collimated light beams of three different wavelengths at three different numerical apertures onto desired positions of three different recording media with substrates of different thicknesses, such as an AOD, a DVD, and a CD, that introduce different amounts of spherical aberration in the focused beams. The objective optical system provides compensating spherical aberration to the three light beams while keeping equal the distance between the diffractive optical element and the objective lens, and focuses second-order diffracted light of one wavelength and first-order diffracted light of the other two wavelengths. An optical pickup device includes the objective optical system, the recording media, and a light source supplying the three light beams.

摘要翻译： 物镜光学系统由具有衍射面的衍射光学元件形成，该衍射面形成在平面“虚拟表面”（即，对于衍射结构为平面的表面）和用于聚焦三个准直光束的物镜 不同波长的三个不同数值孔径到具有不同厚度的衬底（例如AOD，DVD和CD）的三种不同记录介质的所需位置，其在聚焦光束中引入不同量的球面像差。 物镜光学系统对三个光束提供补偿球面像差，同时保持衍射光学元件和物镜之间的距离相等，并且聚焦一个波长的二次衍射光和另外两个波长的一次衍射光。 光拾取装置包括物镜光学系统，记录介质和提供三个光束的光源。

公开(公告)号：US20050105448A1

公开(公告)日：2005-05-19

申请号：US10988638

申请日：2004-11-16

申请人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

发明人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

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

CPC分类号： G11B7/1392 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective lens is formed as an objective lens element with a diffractive surface on one side. The objective lens focuses a collimated light beam of a first wavelength diffracted by the objective lens onto a first recording medium, a collimated light beam of a second wavelength diffracted by the objective lens onto a second recording medium, and a diverging light beam of a third wavelength diffracted by the objective lens onto a third recording medium. The three light beams are focused at three different working distances from the objective lens and the diffraction orders of the diffracted light of two of the light beams is the same. The objective lens satisfies certain conditions related to the shortest of the three different working distances, the focal length of the objective lens element at the shortest of the three wavelengths, and the thickness of the objective lens.

摘要翻译： 物镜形成为在一侧具有衍射面的物镜元件。 物镜将由物镜衍射的第一波长的准直光束聚焦到第一记录介质上，将由物镜衍射的第二波长的准直光束聚焦到第二记录介质上，并将第三波长的发散光束 波长由物镜衍射到第三记录介质上。 三个光束聚焦在与物镜三个不同的工作距离处，两个光束的衍射光的衍射级相同。 物镜满足与三个不同工作距离中最短的物体相关的某些条件，三个波长中最短的物镜的焦距和物镜的厚度。

公开(公告)号：US20050041560A1

公开(公告)日：2005-02-24

申请号：US10922958

申请日：2004-08-23

申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

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

CPC分类号： G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective lens consists of two lens elements of different materials that are cemented. The lens surfaces that are cemented includes a phase function so that the cemented surface forms a optical diffractive surface that enables the objective lens to focus incident light of three different wavelengths with different numerical apertures onto different optical recording media. Three conditions are satisfied so as to achieve optimum imaging. The optical diffractive surface may be shaped so that the order of the diffracted light of the shortest wavelength λ1 having the largest diffracted intensity is different from the order of the diffracted light of the second wavelength λ2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength λ1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength λ3 having the largest diffracted intensity.

摘要翻译： 物镜由两种胶合的不同材料的透镜元件组成。 胶合的透镜表面包括相位功能，使得胶合表面形成光学衍射表面，使得物镜能够使具有不同数值孔径的三种不同波长的入射光聚焦到不同的光学记录介质上。 满足三个条件以实现最佳成像。 光学衍射面可以被成形为具有最大衍射强度的最短波长λ1的衍射光的次序与具有最大衍射强度的第二波长λ2的衍射光的次序不同，并且 具有最大衍射强度的第一波长λ1的衍射光也与具有最大衍射强度的第三波长λ3的衍射光的次数不同。

公开(公告)号：US20090285078A1

公开(公告)日：2009-11-19

申请号：US12466465

申请日：2009-05-15

申请人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

发明人： Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

IPC分类号： G11B7/135 ,  G02B13/18

CPC分类号： G02B3/04 ,  G11B7/1374

摘要： An objective lens for converging light emitted from a light source onto an optical recording medium to record and reproduce information consists of a single lens that has at least one aspheric surface. The following conditional expressions (1) and (2) are satisfied: −0.90

摘要翻译： 用于将从光源发射的光会聚到光学记录介质上以记录和再现信息的物镜由具有至少一个非球面的单个透镜组成。 满足以下条件表达式（1）和（2）：-0.90R1 / R2 0.70d / f其中R1表示光轴附近的光源侧表面的曲率半径（mm），R2表示曲率半径 （mm），d表示光轴上的厚度（mm），f表示焦距（mm）。

公开(公告)号：US20090129242A1

公开(公告)日：2009-05-21

申请号：US12273193

申请日：2008-11-18

申请人： Toshiaki KATSUMA ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

发明人： Toshiaki KATSUMA ,  Masao Mori ,  Tetsuya Ori ,  Yu Kitahara

IPC分类号： G11B7/00

CPC分类号： G11B7/1374

摘要： An objective lens 8 consists of a single lens element. A light source side surface 8a is formed into a convex surface having a large curvature, and an optical recording medium side surface 8b has a small curvature. Also, the objective lens satisfies the following expressions (1) and (2) ΦA/ΦB

摘要翻译： 物镜8由单个透镜元件组成。 光源侧表面8a形成为具有大曲率的凸表面，并且光记录介质侧表面8b具有小曲率。 此外，物镜满足以下表达式（1）和（2）<？in-line-formula description =“In-line formula”end =“lead”？> PhiA / PhiB <5.0（1）<？ line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 7.69 <= PhiA / PhiB + 19.33xbf' /f'<=9.45（2）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中PhiA表示物镜的光源侧表面的有效直径（mm） 如图8所示，PhiB表示物镜8的光记录介质侧面的有效直径（mm），bf'表示物镜8的后焦距（mm），f'表示物镜8的焦距（mm） 物镜8。