公开(公告)号：US20140022882A1

公开(公告)日：2014-01-23

申请号：US14007176

申请日：2012-04-09

申请人： Kousei Sano ,  Tatsuya Takaoka ,  Hidenori Wada ,  Keiichi Matsuzaki

发明人： Kousei Sano ,  Tatsuya Takaoka ,  Hidenori Wada ,  Keiichi Matsuzaki

IPC分类号： G11B7/007

CPC分类号： G11B7/007 ,  B82Y10/00 ,  B82Y20/00 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24085

摘要： An optical disc (120) has a first mark (131) disposed at the center of a track, a second mark (132) disposed away from the center of the track in a tracking direction thereof by a distance b1, and disposed away from the first mark (131) in the direction along the track by a distance L, and a third mark (133) disposed away from the center of the track in the tracking direction opposite to that of the second mark (132) by a distance b2, and disposed away from the first mark (131) in the direction along the track by a distance L2. The second and third marks (132) and (133) generate scattered light depending on the distance between a scattering medium (103) and each of the marks by irradiating the scattering medium (103) in an optical information apparatus with light. The distances b1 and b2 are smaller than 50 nm.

摘要翻译： 光盘（120）具有设置在轨道中心的第一标记（131），沿跟踪方向远离轨道中心远离距离b1设置的第二标记（132），远离 沿着轨道的方向上的第一标记（131）距离L;以及第三标记（133），沿着与第二标记（132）的跟踪方向相反的跟踪方向远离轨道的中心距离为b2， 并且沿着轨道的方向远离第一标记（131）远离距离L2。 第二和第三标记（132）和（133）通过在具有光的光学信息装置中照射散射介质（103），根据散射介质（103）和每个标记之间的距离产生散射光。 距离b1和b2小于50nm。

公开(公告)号：US08483034B2

公开(公告)日：2013-07-09

申请号：US13702882

申请日：2011-11-09

申请人： Hidenori Wada ,  Kousei Sano ,  Keiichi Matsuzaki ,  Sadao Mizuno

发明人： Hidenori Wada ,  Kousei Sano ,  Keiichi Matsuzaki ,  Sadao Mizuno

IPC分类号： G11B7/00

CPC分类号： G11B7/13 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1387 ,  G11B2007/0013

摘要： An optical pickup, an inclination angle detection method, an optical information device, and an information processing device capable of reliably and accurately detecting a relative inclination angle between an end face of a solid immersion lens and a surface of an optical recording medium are provided. A convergence position modifying unit modifies convergence states of a first beam and a second beam according to layers of an optical recording medium, a first optical detector includes a first light receiving section which receives the converged first beam and a second light receiving section which receives the converged second beam, and the first optical detector detects a relative inclination angle between an end face of a solid immersion lens and a surface of the optical recording medium based on a difference in quantities of received light between the first light receiving section and the second light receiving section.

摘要翻译： 提供能够可靠且准确地检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度的光学拾取器，倾斜角度检测方法，光学信息装置和信息处理装置。 会聚位置修改单元根据光记录介质的层来修改第一光束和第二光束的会聚状态，第一光检测器包括接收会聚的第一光束的第一光接收部分和接收第一光接收部分的第二光接收部分， 会聚第二光束，并且第一光学检测器基于第一光接收部分和第二光线之间的接收光量的差异来检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度 接收部分。

公开(公告)号：US08320227B2

公开(公告)日：2012-11-27

申请号：US13014031

申请日：2011-01-26

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

摘要翻译： 根据本发明的物镜单元包括第一物镜41; 以及用于支撑第一物镜41的第一透镜保持器2.第一透镜保持器2由透射紫外线的材料形成。 优选地，第一透镜保持件2包括通孔，具有入射在第一物镜41上的光通过的第一和第二开口2a和2b以及沿着通孔的周向设置的开口限制部3 并朝向通孔的中心轴突出。 第一物镜41被支撑以阻挡第一开口2b。 开口限制部3在远离第一物镜的光轴的方向上引导从第二开口2a入射的光。

公开(公告)号：US07640559B2

公开(公告)日：2009-12-29

申请号：US11643770

申请日：2006-12-22

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

IPC分类号： G11B7/00

CPC分类号： G11B7/121 ,  G11B2007/0006

摘要： An objective lens actuator is provided which includes two objective lenses mounted on a movable body, and which is capable of preventing the movable body from coming into contact or collision with a disk and whose thickness becomes thinner. When a light beam is concentrated and focused on a high-density optical disk, D1 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; when a light beam is concentrated and focused on a CD, D2 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; when a light beam is concentrated and focused on a DVD, D3 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; and the following relational expression (1) is satisfied, D1

摘要翻译： 提供一种物镜致动器，其包括安装在可移动体上的两个物镜，并且能够防止可移动体与盘接触或碰撞并且其厚度变薄。 当光束集中并聚焦在高密度光盘上时，D1表示盘表面与可移动体的最靠近盘的位置之间的距离; 当光束集中并聚焦在CD上时，D2表示盘表面和可移动体的与光盘最靠近位置的部分之间的距离; 当光束集中并聚焦在DVD上时，D3表示在与盘最靠近的位置的盘表面和可移动体的部分之间的距离; 并满足以下关系式（1）D1

公开(公告)号：US20090310465A1

公开(公告)日：2009-12-17

申请号：US12096807

申请日：2006-12-12

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/135 ,  G02B3/00 ,  G02B17/00

CPC分类号： G11B7/1395 ,  G11B2007/0006

摘要： An optical head according to the present invention includes: a first light source that emits light with a first wavelength; a beam splitter that splits the light emitted from the first light source into a first light beam traveling in a first direction and a second light beam traveling in a second direction different from the first direction; a first collimator lens for changing degrees of divergence of the first light beam; a first mirror that changes the traveling directions of the first light beam, of which the degrees of divergence have been changed; a first objective lens for converging the first light beam, which has had its traveling directions changed, toward a storage layer of a first optical disk; a mover that holds the first objective lens; a first photodetector that receives the first light beam reflected from the storage layer of the first optical disk and converts it into an electrical signal; a condenser lens for condensing the second light beam; and a second photodetector that receives the second light beam condensed by the condenser lens and converts it into an electrical signal.

摘要翻译： 根据本发明的光头包括：发射具有第一波长的光的第一光源; 将从第一光源发射的光分成沿第一方向传播的第一光束和沿与第一方向不同的第二方向行进的第二光束的分束器; 用于改变第一光束的发散度的第一准直透镜; 改变其偏离度的第一光束的行进方向的第一反射镜; 用于将其行进方向改变的第一光束会聚到第一光盘的存储层的第一物镜; 保持第一个物镜的移动器; 第一光电检测器，其接收从第一光盘的存储层反射的第一光束并将其转换为电信号; 聚光透镜，用于冷凝第二光束; 以及第二光电检测器，其接收由聚光透镜聚光的第二光束并将其转换成电信号。

公开(公告)号：US07529043B2

公开(公告)日：2009-05-05

申请号：US10542361

申请日：2004-07-06

申请人： Eishin Mori ,  Keiichi Matsuzaki ,  Hidenori Wada ,  Hideki Hayashi

发明人： Eishin Mori ,  Keiichi Matsuzaki ,  Hidenori Wada ,  Hideki Hayashi

IPC分类号： G02B7/02

CPC分类号： G02B7/028 ,  G02B19/0014 ,  G02B19/0052 ,  G11B7/1359 ,  G11B7/1376 ,  G11B7/13925 ,  G11B7/1398 ,  G11B2007/13727

摘要： A lens surface of a collimating lens closer to a light source is in contact with a retracted surface at one end surface of a barrel. On a projecting surface at an outer side of the one end surface of the barrel, grooves are formed at a plurality of positions symmetric with respect to an optical axis. An adhesive deposited in the grooves is applied to an outer circumferential surface of the collimating lens to fix the collimating lens in the barrel. Since the grooves are formed to be shallower than the retracted surface, the adhesive does not intrude onto the retracted surface. The barrel is pressed against a wall surface formed in an inner circumferential surface of a barrel holder main portion and having a V-shaped cross section by a leaf spring, thereby being held at a specified position in the barrel holder main portion. An amount of change in distance from a reference surface to a held position of the collimating lens per unit temperature is set to conform to a sum of an amount of change in movement of the light source from the reference position per unit temperature and an amount of change of back focus of the collimating lens per unit temperature.

摘要翻译： 靠近光源的准直透镜的透镜表面与筒的一个端面处的缩回表面接触。 在筒的一端面的外侧的突出面上形成有相对于光轴对称的多个位置的槽。 将沉积在凹槽中的粘合剂施加到准直透镜的外周表面，以将准直透镜固定在镜筒中。 由于凹槽形成为比缩回表面浅，所以粘合剂不会侵入缩回的表面。 筒被压在形成于筒保持器主体部的内周面的壁面上，并且通过片簧具有V形横截面，从而被保持在筒保持器主体部分中的指定位置。 将每单位温度的准直透镜的基准面到保持位置的距离的变化量设定为与光单元相对于每单位温度的基准位置的移动量的变化量和 每单位温度改变准直透镜的后焦距。

公开(公告)号：US20090086330A1

公开(公告)日：2009-04-02

申请号：US12280601

申请日：2007-01-23

申请人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

发明人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

IPC分类号： G02B13/18

CPC分类号： G11B7/1353 ,  G11B7/1362 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0013

摘要： A small optical pickup of wide spherical aberration correction range is provided. The optical pickup includes a rising mirror for deflecting a light beam at substantially right angle and guiding to an entrance surface of the objective lens; a spherical aberration correction lens having one surface formed to a larger curvature than the other surface; a lens holder for holding the spherical aberration correction lens so that the surface of large curvature partially projects out towards the rising mirror side; a guide member extending in an optical axis direction of the spherical aberration correction lens sand having an end arranged to the side of a reflecting surface of the rising mirror; and a slidable part slidable along the guide member; wherein the projecting portion of the slidable part is configured to be fitted within the side surface of the reflecting surface of the rising mirror, and the projecting portion from the lens holder of the spherical aberration correction lens overlaps the reflecting surface of the rising mirror when the spherical aberration correction lens approaches the rising mirror the most.

摘要翻译： 提供宽球面像差校正范围的小型光学拾取器。 光学拾取器包括用于使光束以基本上直角偏转并引导到物镜的入射表面的上升反射镜; 球面像差校正透镜，其一个表面形成为比另一个表面大的曲率; 用于保持球面像差校正透镜的透镜保持器，使得大曲率的表面部分地向上升反射镜侧突出; 引导构件，其沿球面像差校正透镜砂的光轴方向延伸，所述球面像差校正透镜砂的端部设置在所述上​​升反射镜的反射面的一侧; 以及可沿着引导构件滑动的滑动部件; 其中，所述可滑动部分的突出部分被配置成装配在所述反射镜的反射表面的侧表面内，并且当所述球面像差校正透镜的透镜保持器的突出部分与所述上升反射镜的反射表面重叠时， 球面像差校正镜最接近上升镜。

公开(公告)号：US07330419B2

公开(公告)日：2008-02-12

申请号：US11443751

申请日：2006-05-31

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

摘要翻译： 光头装置包括聚焦光学系统，用于将从半导体激光光源发射的激光束聚焦在具有物镜的光信息介质上。 在半导体激光光源和光信息介质之间设置用于校正物镜中出现的色像差的色像差校正元件。 提供透光率随着距离物镜的孔径表面的中心的距离而增加的光分布校正元件，以便校正入射到物镜的孔表面上的光的强度的降低，距离 从孔表面的中心。

公开(公告)号：US07277366B2

公开(公告)日：2007-10-02

申请号：US10787100

申请日：2004-02-27

申请人： Hidenori Wada ,  Keiichi Matsuzaki ,  Hideki Hayashi

发明人： Hidenori Wada ,  Keiichi Matsuzaki ,  Hideki Hayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/13927 ,  G11B7/0925 ,  G11B7/0956

摘要： An optical head performs recording and/or reproducing of a signal to an optical recording medium and comprises a light source, an objective lens converging the light emitted from the light source to the optical recording medium, and objective lens tilting mechanism for tilting the objective lens in order to correct aberration generated when the optical recording medium is tilted, and the optical head is assembled so that a direction of the coma aberration of the objective lens itself perpendicularly crosses a direction tilted by the objective lens tilting mechanism.

摘要翻译： 光学头执行向光学记录介质的信号的记录和/或再现，并且包括光源，将从光源发射的光会聚到光学记录介质的物镜和用于倾斜物镜的物镜倾斜机构 为了校正当光学记录介质倾斜时产生的像差，并且光学头组装成使得物镜本身的彗形像差的方向垂直于由物镜倾斜机构倾斜的方向穿过。

公开(公告)号：US20060233072A1

公开(公告)日：2006-10-19

申请号：US11451779

申请日：2006-06-13

申请人： Teruhiro Shiono ,  Keiichi Matsuzaki ,  Hidenori Wada ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Keiichi Matsuzaki ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1369 ,  G11B7/13922

摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.

摘要翻译： 提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。 光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置 设置在光源和信息记录介质之间的光路中。 由于设置了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦， 也可以校正由设计波长和入射波长之间的波长差引起的光学系统。 结果，可以获得优异的光学特性。