公开(公告)号：US5296694A

公开(公告)日：1994-03-22

申请号：US963474

申请日：1992-10-21

申请人： Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Seiji Nishino ,  Hiroaki Yamamoto

发明人： Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Seiji Nishino ,  Hiroaki Yamamoto

IPC分类号： G11B11/10 ,  G11B7/135 ,  G11B11/105 ,  G01J1/20

CPC分类号： G11B7/1353 ,  G11B11/10543 ,  G11B11/10576 ,  G11B7/1369

摘要： The present invention relates to an optical pick-up head apparatus capable of recording, reproducing, or erasing optical information, and provides an optical pick-up head apparatus which can detect signals in a stable and good condition. A Faraday rotator 20 is disposed on an optical path between a polarized beamsplitter 55 and a polarized beamsplitter 53 so as to rotate polarization directions of a beam 6 emitted from a semiconductor laser source 2 and a beam 6 reflected back at a magneto-optical recording medium 4. A beam passing through the polarized beamsplitter 53 is received by a photodetector unit 83 to detect information signals and a reflected beam from the polarized beamsplitter 53 is received by a photodetector unit 84 to detect focusing- and tracking-error signals. Accordingly, it becomes possible that light quantity supplied to the photodetector unit 83 is adjusted to the optimum amount capable of adequately detecting the information signal and further all the remaining light quantity is supplied to the photodetector unit 84. Therefore, there is no uselessness in the detection of light. That is, both the focusing (or tracking)-error signal and the information signal can be respectively detected with high intensity and excellent S/N ratio. Consequently, it becomes possible to provide an optical pick-up head apparatus assuring very high reliability.

摘要翻译： 本发明涉及一种能够记录，再现或擦除光学信息的光学拾取头装置，并且提供了可以在稳定和良好状态下检测信号的光学拾取头装置。 法拉第旋转器20设置在偏振分束器55和偏振分束器53之间的光路上，以便旋转从半导体激光源2发射的光束6的偏振方向和在磁光记录介质上反射的光束6 通过偏振分束器53的光束由光电检测器单元83接收以检测信息信号，并且来自偏振分束器53的反射光束由光电检测器单元84接收以检测聚焦和跟踪误差信号。 因此，提供给光检测器单元83的光量可以被调整到能够适当地检测信息信号的最佳量，并且进一步将所有剩余光量提供给光电检测器单元84.因此，在 检测光。 也就是说，可以分别以高强度和优异的S / N比来检测聚焦（或跟踪）误差信号和信息信号。 因此，可以提供确保非常高的可靠性的光学拾取头装置。

公开(公告)号：US07580327B2

公开(公告)日：2009-08-25

申请号：US12002380

申请日：2007-12-17

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US07352664B2

公开(公告)日：2008-04-01

申请号：US11031634

申请日：2005-01-07

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

公开(公告)号：US20060028927A1

公开(公告)日：2006-02-09

申请号：US11238272

申请日：2005-09-29

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US5687153A

公开(公告)日：1997-11-11

申请号：US778508

申请日：1997-01-03

申请人： Yoshiaki Komma ,  Seiji Nishino ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Makoto Kato ,  Tetsuo Saimi

发明人： Yoshiaki Komma ,  Seiji Nishino ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Makoto Kato ,  Tetsuo Saimi

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G11B11/10543 ,  G11B7/12 ,  G11B7/123 ,  G11B7/0912

摘要： An optical head device includes: a light source for emitting a light beam; an objective lens for converging the light beam on an information storage medium; a hologram for receiving the light beam reflected by the information storage medium and generating diffracted light from the light beam, the hologram having such a polarization anisotropy that it diffracts light in a second polarization state more strongly than light in a first polarization state which is different from the second polarization state; and a photodetector including a plurality of photodetective sections for receiving a part of the diffracted light and outputting a photocurrent in accordance with the intensity of the part of the diffracted light. The optical head device further include a quarter-wave plate disposed between the objective lens and the hologram for causing the polarization state of the light beam reflected by the information storage medium to be the second polarization state; and the hologram is disposed so that the distance between the hologram and the objective lens is shorter than the distance between the hologram and the photodetector.

摘要翻译： 光头装置包括：用于发射光束的光源; 用于将光束会聚在信息存储介质上的物镜; 用于接收由信息存储介质反射的光束并产生来自光束的衍射光的全息图，该全息图具有这样的偏振各向异性，使得它在比第一偏振态不同的光更强烈地衍射具有第二偏振态的光 从第二极化状态; 以及光电检测器，其包括多个光电检测部分，用于接收一部分衍射光并根据部分衍射光的强度输出光电流。 光头装置还包括设置在物镜和全息图之间的四分之一波片，用于使由信息存储介质反射的光束的偏振状态成为第二偏振状态; 并且全息图被设置成使得全息图和物镜之间的距离比全息图和光电检测器之间的距离短。

公开(公告)号：US20090051827A1

公开(公告)日：2009-02-26

申请号：US11916041

申请日：2006-05-22

申请人： Toshifumi Yokoyama ,  Ken'ichi Kasazumi ,  Shin-ichi Kadowaki ,  Kiminori Mizuuchi ,  Hiroyuki Furuya ,  Kazuhisa Yamamoto

发明人： Toshifumi Yokoyama ,  Ken'ichi Kasazumi ,  Shin-ichi Kadowaki ,  Kiminori Mizuuchi ,  Hiroyuki Furuya ,  Kazuhisa Yamamoto

IPC分类号： H04N9/31

CPC分类号： G03B21/005

摘要： A display device (100) of the present invention has a first switch (3) and a second switch (4) on an upper surface of its casing, and includes a control circuit (18) for controlling the first switch (3) and the second switch (4) and a light source (19) inside the casing. The control circuit (18) performs control so that the light source (19) is turned on when the second switch (4) is pressed after a predetermined period of time has passed from when the first switch (3) was pressed. Thereby, the display device (100) of the present invention prevents entering of a person into a projection area before projection of video, and controls inadvertent start-up.

摘要翻译： 本发明的显示装置（100）在其壳体的上表面上具有第一开关（3）和第二开关（4），并且包括用于控制第一开关（3）的控制电路（18）和 第二开关（4）和光源（19）。 控制电路（18）进行控制，使得当从第一开关（3）被按压经过预定时间段之后按下第二开关（4）时，光源（19）被接通。 因此，本发明的显示装置（100）防止在投影视频之前将人进入投影区域，并且控制无意的启动。

公开(公告)号：US20080273123A1

公开(公告)日：2008-11-06

申请号：US12064373

申请日：2006-09-14

申请人： Akihiro Morikawa ,  Ken'ichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

发明人： Akihiro Morikawa ,  Ken'ichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

IPC分类号： H04N5/74

CPC分类号： G03B21/2013 ,  G03B21/2033 ,  G03B21/2053 ,  G03B33/06 ,  G03B33/08 ,  H01S5/06808 ,  H01S5/0683 ,  H01S5/4025 ,  H04N9/3105 ,  H04N9/3155 ,  H04N9/3161 ,  H04N9/3194

摘要： In a laser picture formation device which forms a vide image by irradiating lights emitted from plural laser light sources (1a, 1b, 1c) which obtains monochromatic lights from laser lights which are outputted from the respective laser light emission parts to spatial light modulators (5a, 5b, 5c), each of the plural laser light sources (1a, 1b, 1c) detect the output of laser light which is emitted from the respective laser light emission parts on the basis of the modulation input signal which for modulating the spatial light modulator. Thereby, it is possible to confirm the deterioration situation of the respective laser light emission parts without deteriorating the video images which are projected onto the screen, as well as without separating the synthesized light respectively.

摘要翻译： 在激光图像形成装置中，通过从从各个激光发射部分输出的激光获得单色光的多个激光光源（1a，1b，1c）发射的光来形成视野图像， 调制器（5a，5b，5c）中，多个激光源（1a，1b，1c）中的每一个基于所述激光发射部分检测从各个激光发射部分发射的激光的输出 用于调制空间光调制器的调制输入信号。 由此，可以确认各激光发射部分的劣化状况，而不会使投影到屏幕上的视频图像劣化，并且不会分离合成光。

公开(公告)号：US20100165307A1

公开(公告)日：2010-07-01

申请号：US11997117

申请日：2006-06-01

申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Tatsuo Itoh ,  Tomoya Sugita ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Tatsuo Itoh ,  Tomoya Sugita ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

IPC分类号： G03B21/28 ,  G02B27/14 ,  G02B27/18

CPC分类号： H04N9/3161 ,  G02B26/105 ,  G02B27/0961 ,  G03B21/005 ,  H04N9/3129

摘要： A laser image display comprising a laser light source emitting laser light, a beam deflector element for receiving laser light and deflecting its advancing direction, a beam deflecting element control section for controlling the degree of deflection performed by the beam deflector element, an optical integrator for receiving and guiding the deflected laser light to output from its outputting end face, a pseudo surface light source element for scattering the deflected laser light, and a modulation element for receiving and modulating the laser light scattered by the false surface light source element.

摘要翻译： 一种激光图像显示器，包括发射激光的激光光源，用于接收激光并偏转其前进方向的光束偏转元件，用于控制由光束偏转元件执行的偏转程度的光束偏转元件控制部分，用于 接收和引导偏转的激光从其输出端面输出，用于散射偏转的激光的伪平面光源元件，以及用于接收和调制由假面光源元件散射的激光的调制元件。

公开(公告)号：US20090303417A1

公开(公告)日：2009-12-10

申请号：US12093487

申请日：2006-11-15

申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

IPC分类号： F21V8/00 ,  G02F1/13357

CPC分类号： G02B5/02 ,  G02B3/0056 ,  G02B6/0028 ,  G02B6/0066 ,  G02B19/0028 ,  G02B19/0057 ,  G02B26/105 ,  G02B27/1053 ,  G02B27/1086 ,  G02B27/144 ,  G02B27/145 ,  G02B27/48 ,  G02F1/133621

摘要： The present invention provides a surface illuminator having a uniform luminance over a large area by using a laser light source, having a wide color reproduction range, and capable of suppressing a speckle noise, as well as a liquid crystal display using the same. The surface illuminator of the present invention includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that makes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and making the incident laser beam to emit from a first major surface. Further, the liquid crystal display of the present invention includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from backside in this liquid crystal display.

摘要翻译： 本发明通过使用具有宽的色彩再现范围并且能够抑制散斑噪声的激光源以及使用其的液晶显示器，提供了在大面积上具有均匀亮度的表面照明器。 本发明的表面照明器包括发射激光束的激光光源; 光束扫描部分，其偏转和扫描激光束; 以及第一板状光导，其使由激光束扫描部偏转和扫描的激光束从端面部入射并使入射的激光束从第一主表面发射。 此外，本发明的液晶显示器包括液晶显示面板和表面照明器，其中表面照明器用作从该液晶显示器的背面照亮液晶显示面板的背光照明器。

公开(公告)号：US07969532B2

公开(公告)日：2011-06-28

申请号：US12093487

申请日：2006-11-15

申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

IPC分类号： F21V8/00 ,  G02F1/1335

CPC分类号： G02B5/02 ,  G02B3/0056 ,  G02B6/0028 ,  G02B6/0066 ,  G02B19/0028 ,  G02B19/0057 ,  G02B26/105 ,  G02B27/1053 ,  G02B27/1086 ,  G02B27/144 ,  G02B27/145 ,  G02B27/48 ,  G02F1/133621

摘要： A surface illuminator has a uniform luminance over a large area by using a laser light source, has a wide color reproduction range, and is capable of suppressing a speckle noise. A liquid crystal display uses such a surface illuminator. The surface illuminator includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that causes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and causes the incident laser beam to emit from a first major surface. Further, the liquid crystal display includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from the backside in this liquid crystal display.

摘要翻译： 表面照明器通过使用激光源在大面积上具有均匀的亮度，具有宽的色彩再现范围，并且能够抑制斑点噪声。 液晶显示器使用这种表面照明器。 表面照明器包括发射激光束的激光光源; 光束扫描部分，其偏转和扫描激光束; 以及第一板状光导，其使由光束扫描部偏转和扫描的激光束从端面部入射，并使入射的激光束从第一主表面发射。 此外，液晶显示器包括液晶显示面板和表面照明器，其中表面照明器用作在该液晶显示器中从背面照亮液晶显示面板的背光照明器。