公开(公告)号：US07924686B2

公开(公告)日：2011-04-12

申请号：US12882300

申请日：2010-09-15

申请人： Takahiro Tomita ,  Michihiro Yamagata ,  Yoshiaki Komma ,  Katsuhiko Hayashi

发明人： Takahiro Tomita ,  Michihiro Yamagata ,  Yoshiaki Komma ,  Katsuhiko Hayashi

IPC分类号： G11B7/135

CPC分类号： G11B7/1374

摘要： An objective lens for converging light onto a recording surface of an optical information recording medium in order to perform at least one of recording, reproduction and deletion of information on the optical information recording medium. The objective lens is a bi-convex single lens having at least one aspheric surface, and satisfies the following conditions: 0.8

摘要翻译： 一种物镜，用于将光聚焦到光学信息记录介质的记录表面上，以便执行光学信息记录介质上的信息的记录，再现和删除中的至少一个。 物镜是具有至少一个非球面的双凸单透镜，满足以下条件：0.8

公开(公告)号：US07864650B2

公开(公告)日：2011-01-04

申请号：US12705153

申请日：2010-02-12

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其传播第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达：380nm和nlE;（n-1） ）×d＆nlE; 420nm，其中n是衬底在400nm波长处的折射率，d（nm）是每个步长的槽的深度，并且其中沟槽形成为深度的两个步骤 d和深度2d。

公开(公告)号：US07760612B2

公开(公告)日：2010-07-20

申请号：US10504373

申请日：2003-01-30

申请人： Yoshiaki Komma ,  Sadao Mizuno ,  Kousei Sano

发明人： Yoshiaki Komma ,  Sadao Mizuno ,  Kousei Sano

IPC分类号： G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/1275 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/1392 ,  G11B7/1395 ,  G11B2007/0006

摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording or reproducing high-density optical disks. An optical element (8) is provided between a first and second laser light source and an objective lens (18) for the purpose of converting a wave front of a second optical beam 32. Furthermore, the optical element (8) and the objective lens (18) are fixed to move as a single piece.

摘要翻译： 提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光学头记录或播放诸如CD和DVD的常规光盘。 为了转换第二光束32的波前，光学元件（8）设置在第一和第二激光源与物镜（18）之间。此外，光学元件（8）和物镜 （18）固定成单件移动。

公开(公告)号：US20100074067A1

公开(公告)日：2010-03-25

申请号：US12356212

申请日：2009-01-20

申请人： Yoshiaki Komma ,  Fumitomo Yamasaki ,  Toshiyasu Tanaka ,  Kanji Wakabayashi

发明人： Yoshiaki Komma ,  Fumitomo Yamasaki ,  Toshiyasu Tanaka ,  Kanji Wakabayashi

IPC分类号： G11B7/00 ,  G11B20/10

CPC分类号： G11B7/1378 ,  G11B7/13925

摘要： An optical disk driving apparatus includes an optical head device having a laser light source, a converging optical system converging a light beam emitted by the laser light source onto an optical disk, a photo detector receiving reflected light reflected by the optical disk, and an aberration correcting optical system controlling aberration of the converging optical system; a motor rotating the optical disk; and a control section receiving a signal from the photo detector, wherein the converging optical system has an objective lens formed using resin as a main material, the aberration correcting optical system has a spherical aberration correcting element correcting spherical aberration, and the control section evaluates quality of a reproduction signal for information in the optical disk by using the reflected light received by the photo detector, and utilizes a result of the evaluation to perform closed loop control on the spherical aberration correcting element.

摘要翻译： 光盘驱动装置包括具有激光光源的光学头装置，将由激光光源发射的光束会聚在光盘上的会聚光学系统，接受由光盘反射的反射光的光电检测器和像差 调整会聚光学系统的像差的光学系统; 旋转光盘的电机; 以及控制部分，其接收来自光检测器的信号，其中会聚光学系统具有使用树脂作为主要材料形成的物镜，像差校正光学系统具有矫正球面像差的球面像差校正元件，并且控制部分评估质量 通过使用由光电检测器接收的反射光来获得光盘中的信息的再现信号，并利用评估结果对球面像差校正元件执行闭环控制。

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：US20090262629A1

公开(公告)日：2009-10-22

申请号：US12415033

申请日：2009-03-31

申请人： Fumitomo YAMASAKI ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kanji Wakabayashi

发明人： Fumitomo YAMASAKI ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kanji Wakabayashi

IPC分类号： G11B7/135

CPC分类号： G11B7/1395 ,  G11B7/1275 ,  G11B2007/0006

摘要： An optical head is provided with a light source for emitting a first laser beam having a first wavelength shorter than 430 nm, a two-wavelength light source for emitting a second laser beam having a second wavelength equal to or longer than 430 nm, a flat beam splitter in the form of a single plate for reflecting the first laser beam emitted from the light source, a wedge prism in the form of a single plate for reflecting the first laser beam reflected by the flat beam splitter and transmitting the second laser beam emitted from the two-wavelength light source, and an objective lens for focusing the first laser beam reflected by the wedge prism on an information recording surface of a BD. The light source is arranged such that the optical axis of the first laser beam emitted from the light source is inclined with respect to that of the second laser beam emitted from the two-wavelength light source. By this construction, the miniaturization of the optical head can be realized.

摘要翻译： 光头设置有用于发射第一波长短于430nm的第一激光束的光源，用于发射第二波长等于或大于430nm的第二激光束的双波长光源，平坦 用于反射从光源发射的第一激光束的单板形式的分束器，以单个板形式的楔形棱镜，用于反射由平面分束器反射的第一激光束并透射发射的第二激光束 和用于将由楔形棱镜反射的第一激光束聚焦在BD的信息记录表面上的物镜。 光源被布置成使得从光源发射的第一激光束的光轴相对于从双波长光源发射的第二激光束的光轴倾斜。 通过这种结构，可以实现光学头的小型化。

公开(公告)号：US20090138901A1

公开(公告)日：2009-05-28

申请号：US12280812

申请日：2007-02-27

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

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

IPC分类号： G11B7/135 ,  G11B7/00 ,  G01C21/00 ,  G09G5/00

CPC分类号： G11B7/1398 ,  G11B7/1392

摘要： An optical pickup includes: a laser light source which outputs an divergent beam having an elliptical far-field pattern; a beam shaping element having at least one cylindrical plane and which shapes the divergent beam outputted from the laser light source into an divergent beam having a prescribed shape in which at least the length in the major axis direction of the elliptical shape is shortened; a light collecting portion having a beam splitter which perpendicularly collects the divergent beam that is outputted from the beam shaping element and which has a prescribed shape on the recording surface of an optical disk, and a mirror or the like; and a light detecting portion The optical axis of the divergent beam is rotated so that the direction in which the major axis of the divergent beam having a prescribed shape is shortened conforms to the radial direction of an optical information recording medium.

摘要翻译： 光学拾取器包括：激光源，其输出具有椭圆形远场图案的发散光束; 具有至少一个圆柱面并且将从激光光源输出的发散光束成形为具有规定形状的发散光束的光束成形元件，其中至少椭圆形长轴方向上的长度被缩短; 具有分束器的光收集部分，其垂直地收集从光束成形元件输出并且在光盘的记录表面上具有规定形状的发散光束和反射镜等; 和光检测部分发散光束的光轴旋转，使得具有规定形状的发散光束的长轴的方向被缩短，符合光学信息记录介质的径向。

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：US20090040909A1

公开(公告)日：2009-02-12

申请号：US11918780

申请日：2006-04-20

申请人： Joji Anzai ,  Hideki Aikoh ,  Akihiro Arai ,  Hideki Nakata ,  Fumitomo Yamasaki ,  Yoshiaki Komma

发明人： Joji Anzai ,  Hideki Aikoh ,  Akihiro Arai ,  Hideki Nakata ,  Fumitomo Yamasaki ,  Yoshiaki Komma

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/1356 ,  G11B2007/0006

摘要： An optical head device is provided with a light source 1 for emitting a plurality of lights having different wavelengths, an objective lens 31 for focusing a light spot on an optical disc 21, an objective lens 32 for focusing light spots on optical discs 22 to 24, and a prism 53 for splitting a laser light having a wavelength of 405 nm from the light source 1 into a transmitting light and a reflected light, introducing the reflected light to the objective lens 31 and the transmitting light to the objective lens 32, and introducing laser lights having wavelengths of 660 nm, 780 nm from the light source 1 to the objective lens 32.

摘要翻译： 光头装置设置有用于发射具有不同波长的多个光的光源1，用于将光点聚焦在光盘21上的物镜31，用于将光点聚焦在光盘22至24上的物镜32 以及棱镜53，用于将来自光源1的具有405nm波长的激光分解成透射光和反射光，将反射光引导到物镜31和透射光到物镜32，以及 将从光源1到物镜32的波长为660nm，780nm的激光引入。