公开(公告)号：US5777970A

公开(公告)日：1998-07-07

申请号：US603567

申请日：1996-02-21

申请人： Seiji Kajiyama ,  Yoichi Tsuchiya ,  Shuichi Ichiura ,  Tateo Toyama ,  Katsutoshi Hibino

发明人： Seiji Kajiyama ,  Yoichi Tsuchiya ,  Shuichi Ichiura ,  Tateo Toyama ,  Katsutoshi Hibino

IPC分类号： G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/127 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/1376 ,  G11B2007/0006

摘要： An optical disc readout apparatus is disclosured. The apparatus adjusts an optical system which leads the laser beam output from the laser diode to the objective according to the board thickness of the optical disc, and focuses the laser beam onto the information-bearing surface of the disc by the collaboration of the adjusted optical system with the objective. The adjustment can be achieved by, for example, advancing the correction lens to the optical path of the optical system or retreating the correction lens from such optical path. An another apparatus is disclosured. The another apparatus is provided with a first optical system which leads the laser beam output from the first laser diode to the common optical system and a second optical system which leads the laser beam output from the second laser diode to the common optical system. Either the first optical system or the second optical system includes a correction lens. One of the systems is selected according to a type of the loaded disc. Both the first optical system and the second optical system can focus the laser beam onto the information-bearing surface of the disc.

摘要翻译： 公开了一种光盘读出装置。 该装置调整光学系统，该光学系统根据光盘的板厚将激光二极管的激光束输出到物镜，并通过调整后的光学器件协调将激光束聚焦到光盘的信息承载表面上 系统与目标。 可以通过例如将校正透镜前进到光学系统的光路或从该光路返回校正透镜来实现调整。 公开了另一种装置。 另一装置设置有将从第一激光二极管输出的激光束引导到公共光学系统的第一光学系统和将从第二激光二极管输出的激光束引导到公共光学系统的第二光学系统。 第一光学系统或第二光学系统都包括校正透镜。 根据加载的盘的类型选择其中一个系统。 第一光学系统和第二光学系统都可以将激光束聚焦到盘的信息承载表面上。

公开(公告)号：US6025866A

公开(公告)日：2000-02-15

申请号：US64032

申请日：1998-04-22

申请人： Yoichi Tsuchiya ,  Yasuyuki Kanou ,  Seiji Kajiyama ,  Koichi Tada ,  Katsutoshi Hibino ,  Shigeki Hori

发明人： Yoichi Tsuchiya ,  Yasuyuki Kanou ,  Seiji Kajiyama ,  Koichi Tada ,  Katsutoshi Hibino ,  Shigeki Hori

IPC分类号： G11B11/10 ,  G02B27/58 ,  G11B7/00 ,  G11B7/005 ,  G11B7/125 ,  G11B7/135 ,  G11B11/105 ,  B41J2/47

CPC分类号： B82Y10/00 ,  G02B27/58 ,  G11B11/10543 ,  G11B7/1365

摘要： An optical pickup apparatus including a polarization plane rotary unit arranged between a semiconductor laser and an objective lens, and a polarizing film arranged between the polarization plane rotary unit and the objective lens. The polarization plane rotary unit includes liquid crystal, two glass plates sandwiching the liquid crystal, and transparent electrodes patterned to a predetermined configuration on an inner face of these glass planes. The polarization plane rotary unit permits passage of the laser beam without rotating the plane of polarization of the entire laser beam at the time of recording, and permits passage of the laser beam with the plane of polarization of the center portion of the laser beam rotated and the plane of polarization of the remaining outer portion of the laser beam not rotated at the time of reproduction. Only the outer portion of the laser beam is focused on a magneto-optical disk in a reproduction mode, so that a main beam of a small spot is formed by mutual interference. Since the plane of polarization of the laser beam directed on the magneto-optical disk is not rotated, the Kerr angle of rotation can be detected at high accuracy. As a result, the reproducibility is improved.

摘要翻译： 一种包括设置在半导体激光器和物镜之间的偏振面旋转单元的光拾取装置，以及配置在偏振面旋转单元与物镜之间的偏振膜。 偏振面旋转单元包括液晶，夹着液晶的两个玻璃板以及在这些玻璃平面的内表面上被图案化成预定构造的透明电极。 在记录时，偏振面旋转单元允许激光束的通过而不旋转整个激光束的偏振平面，并且允许激光束与激光束的中心部分的偏振平面一起旋转，并且 在再现时激光束的剩余外部部分的偏振面不转动。 只有激光束的外部部分在再现模式下聚焦在磁光盘上，使得通过相互干扰形成小光斑的主光束。 由于朝向磁光盘的激光束的偏振面不旋转，因此可以高精度地检测克尔角的旋转角度。 结果，再现性提高。

公开(公告)号：US20060132725A1

公开(公告)日：2006-06-22

申请号：US10540545

申请日：2003-12-25

申请人： Fusao Terada ,  Kenji Torazawa ,  Yasuo Funazou ,  Yoichi Tsuchiya ,  Katsutoshi Hibino ,  Hideyuki Kanayama ,  Shouichi Yoshii ,  Yoshitaka Kurosaka

发明人： Fusao Terada ,  Kenji Torazawa ,  Yasuo Funazou ,  Yoichi Tsuchiya ,  Katsutoshi Hibino ,  Hideyuki Kanayama ,  Shouichi Yoshii ,  Yoshitaka Kurosaka

IPC分类号： G03B21/14

CPC分类号： G02B27/102 ,  G02B27/1046 ,  G02B27/126 ,  G02B27/149 ,  H04N9/315

摘要： An illuminating device (1) is formed of a light source (12) in which LED chips (11) are arranged in an array shape and lens cells (14) are arranged on a light-emission side of each of the LED chips (11), and a pair of fly's eye lenses (13) that integrates and guides to a liquid crystal panel (3) the light emitted from each of the LED chips (11) and collimated by the lens cells (14). The LED chip (11) and the lens cell (14) are formed in a square shape, and an aspect ratio thereof corresponds to that of the liquid crystal display panel (3). In addition, the lens cells (14) are arranged separately from one another in such a manner to have wall surfaces (air gaps), and the wall surfaces serve as reflective surfaces.

摘要翻译： 照明装置（1）由其中LED芯片（11）布置成阵列形状的光源（12）形成，并且透镜单元（14）布置在每个LED芯片（11）的发光侧 ）和一对蝇眼透镜（13），其将从每个LED芯片（11）发射并由透镜单元（14）准直的光积分并引导到液晶面板（3）。 LED芯片（11）和透镜单元（14）形成为正方形，其长宽比对应于液晶显示面板（3）的长宽比。 此外，透镜单元（14）以具有壁面（气隙）的方式彼此分开地布置，并且壁表面用作反射表面。

公开(公告)号：US08427922B2

公开(公告)日：2013-04-23

申请号：US12690501

申请日：2010-01-20

申请人： Noboru Mamiya ,  Katsutoshi Hibino ,  Kenji Nagatomi

发明人： Noboru Mamiya ,  Katsutoshi Hibino ,  Kenji Nagatomi

IPC分类号： G11B7/00

CPC分类号： G11B7/094 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0013

摘要： An optical pickup device is so configured as to change the propagating directions of light fluxes in four light flux areas defined in the periphery of an optical axis of laser light, out of the laser light reflected on a disc, to separate the four light fluxes one from the other. A signal light area where only signal light exists is defined on a detecting surface of a photodetector. Sensors for signal light is disposed at a position in the signal light area to be irradiated by the signal light, and a tracking error signal is generated based on a signal from the sensors. A direct-current component of the tracking error signal resulting from positional displacements of the sensors is cancelled by adjusting a gain of the signal from the sensor.

摘要翻译： 光学拾取装置被配置成在由光盘上反射的激光中改变在激光光轴的外围限定的四个光通量区域中的光束的传播方向，从而将四个光束1 从另一个 仅在信号光存在的信号光区域被限定在光电检测器的检测表面上。 用于信号光的传感器设置在信号光区域中由信号光照射的位置，并且基于来自传感器的信号产生跟踪误差信号。 通过调节来自传感器的信号的增益来消除由传感器的位置偏移产生的跟踪误差信号的直流分量。

公开(公告)号：US5598394A

公开(公告)日：1997-01-28

申请号：US442162

申请日：1995-05-16

申请人： Katsutoshi Hibino ,  Yasuko Teragaki

发明人： Katsutoshi Hibino ,  Yasuko Teragaki

IPC分类号： G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1359 ,  G11B7/1372

摘要： An optical pick-up comprising a laser source (laser diode), a plurality of optical elements, beam splitter, focusing means (microlens) and detecting means (photo diode) is disclosed. The plurality of optical elements focuses a laser beam which is emitted from the laser diode onto a magneto-optic disc, and focuses a laser beam which is reflected from the magneto-optic disc onto a photo detector. The beam splitter splits the laser beam, which is emitted from the laser diode, by reflecting a part of the laser beam at a first surface and by refracting the other part of the laser beam at the first surface. The reflected part is entered into the optical elements and the refracted part is passed through the beam splitter and then emerged from a second surface. The microlens is integrally formed on the second surface of the beam splitter by the ion exchanging method. And the microlens focuses the beam which is emerged from the second surface. The photo diode detects the beam which is focused by the microlens. The beam splitter, the beam splitter, the microlens and the photo diode are mounted on a common substrate.

摘要翻译： 公开了一种包括激光源（激光二极管），多个光学元件，分束器，聚焦装置（微透镜）和检测装置（光电二极管）的光学拾取器。 多个光学元件将从激光二极管发射的激光束聚焦到磁光盘上，并将从磁光盘反射的激光束聚焦到光电检测器上。 分束器将从激光二极管发射的激光束分离，通过在第一表面处反射激光束的一部分并且在第一表面处折射激光束的另一部分。 反射部分被输入到光学元件中，并且折射部分通过分束器，然后从第二表面出来。 微透镜通过离子交换法一体地形成在分束器的第二表面上。 并且微透镜将从第二表面出射的光束聚焦。 光电二极管检测由微透镜聚焦的光束。 分束器，分束器，微透镜和光电二极管安装在公共衬底上。

公开(公告)号：US08040779B2

公开(公告)日：2011-10-18

申请号：US12844261

申请日：2010-07-27

申请人： Kenji Nagatomi ,  Katsutoshi Hibino

发明人： Kenji Nagatomi ,  Katsutoshi Hibino

IPC分类号： G11B7/135

CPC分类号： G11B7/0909 ,  G11B7/1353 ,  G11B2007/0013

摘要： An optical pickup device includes an astigmatism element which sets focal line positions to be defined by convergence of laser light away from each other, a diffraction element which diffracts four light fluxes obtained by a light flux of the laser light to disperse the four light fluxes from each other, and a photodetector having a first sensing section and a second sensing section which respectively receive m-th order diffraction light and n-th order diffraction light of the four light fluxes. In this arrangement, the first sensing section receives eight light fluxes obtained by dividing the four light fluxes of the m-th order diffraction light by two straight lines to output detection signals of the number less than eight.

摘要翻译： 一种光学拾取装置，包括：散光元件，其将通过激光的会聚而定义的焦点位置设置为彼此偏离;衍射元件，其衍射由激光的光束获得的四个光通量，以将四个光通量从 以及具有分别接收四个光束的m次衍射光和n次衍射光的第一感测部和第二感测部的光检测器。 在这种布置中，第一感测部分接收通过将m级衍射光的四个光束除以两条直线而获得的8个光束，以输出小于8的数字的检测信号。

公开(公告)号：US20100027386A1

公开(公告)日：2010-02-04

申请号：US12512465

申请日：2009-07-30

申请人： Kenji Nagatomi ,  Katsutoshi Hibino

发明人： Kenji Nagatomi ,  Katsutoshi Hibino

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/08511 ,  G11B7/0909 ,  G11B7/0912 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical pickup apparatus is provided with an angle adjusting element. The angle adjusting element changes a propagation direction of luminous fluxes of four luminous flux regions set about an optical axis of the laser light, out of laser light reflected by a disc, and mutually disperses the luminous fluxes. A signal light region in which signal light only is present appears on a detecting surface of a photodetector. A sensor pattern for signal light is placed at a position irradiated with the signal light within this region. A sensor pattern for a coma aberration detection is placed on an inner side of this region.

摘要翻译： 光拾取装置具有角度调节元件。 由光盘反射的激光，角度调整元件使围绕激光的光轴设置的四个光通量区域的光束的传播方向变化，并相互分散光束。 仅在光检测器的检测表面上出现仅存在信号光的信号光区域。 用于信号光的传感器图案被放置在用该区域内的信号光照射的位置。 用于彗差检测的传感器图案放置在该区域的内侧。

公开(公告)号：US20080123492A1

公开(公告)日：2008-05-29

申请号：US11945673

申请日：2007-11-27

申请人： Kazushi Mori ,  Katsutoshi Hibino ,  Naoyuki Takagi

发明人： Kazushi Mori ,  Katsutoshi Hibino ,  Naoyuki Takagi

IPC分类号： G11B7/00

CPC分类号： G11B7/1362 ,  G11B7/1356 ,  G11B7/1381

摘要： An optical element is disposed on an optical path between a beam branching element and a photodetector. The optical element is disposed at a focal position of a stray light beam reflected by a recording layer except a target recording layer, and shields or attenuates the light beam in a region where the stray light beam converges.

摘要翻译： 光学元件设置在光束分支元件和光电检测器之间的光路上。 光学元件设置在由除了目标记录层之外的记录层反射的杂散光束的焦点位置处，并且在杂散光束会聚的区域中屏蔽或衰减光束。

公开(公告)号：US5999685A

公开(公告)日：1999-12-07

申请号：US921606

申请日：1997-09-02

申请人： Youichiro Goto ,  Michiaki Sato ,  Yasuko Teragaki ,  Katsutoshi Hibino ,  Kenji Torazawa ,  Masahiro Higuchi ,  Takanari Kusafuka

发明人： Youichiro Goto ,  Michiaki Sato ,  Yasuko Teragaki ,  Katsutoshi Hibino ,  Kenji Torazawa ,  Masahiro Higuchi ,  Takanari Kusafuka

IPC分类号： F21V8/00

CPC分类号： G02B6/0038 ,  Y10S385/901

摘要： A light guide plate is provided including a first lens portion comprising a plurality of recessed or projected lenticular unit lenses formed of the same resin as that of the light guide plate on a light emission surface. The plurality of lenticular unit lenses in the first lens portion are triangular prism portions whose respective vertexes have an angle of 125.degree. to 165.degree. and are so arranged that their respective ridge lines are nearly parallel to each other. Such construction makes it possible to set the number of lenticular lens sheets used to one or to further eliminate the necessity of the lenticular lens sheets, so that the cost of parts and the fabrication cost of the light guide plate can be reduced. A second lens portion may be provided on a light reflective surface opposite to the light emission surface on which the first lens portion is disposed, the second lens portion including a plurality of recessed or projected lenticular unit lenses formed of the same resin as that of the light guide plate. Alternatively, a light guide plate is provided having a plurality of grooves with approximately equal groove widths formed on a surface opposite to a light emission surface, the grooves being arranged substantially parallel to each other and the spacing between the grooves narrowing as the distance from the light incident surface increases, with the spacing from the far end of one of the plurality of grooves proximate to the light incident surface to the near end of a groove adjacent thereto farther away from the light incident surface being 5 to 15 times the groove width.

摘要翻译： 提供了一种导光板，包括：第一透镜部分，包括由与发光表面上的导光板相同的树脂形成的多个凹入或突出的双凸透镜单元透镜。 第一透镜部分中的多个透镜单元透镜是三角形棱镜部分，其各自的顶点具有125°至165°的角度，并且被布置成使得它们各自的脊线彼此几乎平行。 这样的结构使得可以将使用的双凸透镜片的数量设置为一个，或者进一步消除双凸透镜片的必要性，从而可以减少导光板的部件成本和制造成本。 第二透镜部分可以设置在与其上设置有第一透镜部分的光发射表面相对的光反射表面上，第二透镜部分包括由与第一透镜部分相同的树脂形成的多个凹入或突出的双凸透镜单元透镜 导光板。 或者，导光板设置有多个槽，其在与发光表面相对的表面上形成有大致相等的槽宽，所述槽基本上彼此平行地布置，并且槽之间的间距随着距离 光入射面增加，与多个凹槽中的一个接近光入射表面的远端的距离相对于与光入射表面相邻的凹槽的近端的距离为凹槽宽度的5至15倍。

公开(公告)号：US07852735B2

公开(公告)日：2010-12-14

申请号：US11943251

申请日：2007-11-20

申请人： Kazushi Mori ,  Katsutoshi Hibino ,  Kenji Asano ,  Kenji Nagatomi ,  Shogo Suzuki ,  Naoyuki Takagi

发明人： Kazushi Mori ,  Katsutoshi Hibino ,  Kenji Asano ,  Kenji Nagatomi ,  Shogo Suzuki ,  Naoyuki Takagi

IPC分类号： G11B7/135

CPC分类号： G11B7/131 ,  G11B7/1353

摘要： A diffraction element is disposed between a beam branching element (such as a beam splitter) and a photodetector. The diffraction element further segment an interference fringe introduced into stray light by a diffraction grating which divides a laser beam emitted from a laser beam source into a main beam and two sub-beams.

摘要翻译： 衍射元件设置在光束分支元件（例如光束分离器）和光电检测器之间。 衍射元件还通过将从激光束源发射的激光束分成主光束和两个子光束的衍射光栅进一步分割引入到杂散光中的干涉条纹。