公开(公告)号：US20070002472A1

公开(公告)日：2007-01-04

申请号：US11455940

申请日：2006-06-20

申请人： Kenji Nagashima ,  Hitoshi Fujii ,  Fuminori Tanaka ,  Susumu Sugiyama ,  Akira Ishii ,  Katsuhiko Tanaka ,  Wataru Kuze

发明人： Kenji Nagashima ,  Hitoshi Fujii ,  Fuminori Tanaka ,  Susumu Sugiyama ,  Akira Ishii ,  Katsuhiko Tanaka ,  Wataru Kuze

IPC分类号： G02B5/08

CPC分类号： G02B26/0825 ,  G11B7/1362 ,  G11B7/13927

摘要： A variable-shape mirror is provided with: a support base; a mirror portion that is disposed to face the support base and that has, on a side thereof facing away from the support base, a mirror surface which is irradiated with a light beam; fixed portions that fix the mirror portion to the support base; and piezoelectric elements that are sandwiched between the support base and the mirror portion and that vary a shape of the mirror surface. Here, the piezoelectric elements are arranged closer to a center of the mirror portion than the fixed portions are.

摘要翻译： 可变形镜提供有：支撑底座; 设置成面向支撑基部并且在其背离支撑基座的一侧上具有用光束照射的镜面的反射镜部分; 将镜部分固定到支撑基座的固定部分; 以及夹在支撑基座和反射镜部分之间并且改变镜面的形状的压电元件。 这里，压电元件比固定部分更靠近镜部分的中心。

公开(公告)号：US07145844B2

公开(公告)日：2006-12-05

申请号：US10615676

申请日：2003-07-08

申请人： Kenji Nagashima ,  Youichi Saitoh

发明人： Kenji Nagashima ,  Youichi Saitoh

IPC分类号： G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/0912 ,  G11B7/1381

摘要： An optical head by which a good detection signal can be obtained based on a zeroth-order diffracted beam and first-order diffracted beams is provided. The optical head includes: a shaping element for shaping a beam emitted from a light source; a converging element for converging the beam that has been shaped by the shaping element on an optical recoding medium; and a detector for detecting an electric signal based on a zeroth-order diffracted beam and a first-order diffracted beam contained in the beam that has been reflected by the optical recoding medium. The shaping element is provided in a swingable manner so that a distance between a spot position at which the zeroth-order diffracted beam is incident on the detector and a spot position at which the first-order diffracted beam is incident on the detector can be adjusted.

摘要翻译： 提供了一种基于零级衍射光束和一级衍射光束可以获得良好检测信号的光学头。 光头包括：成形元件，用于对从光源发射的光束进行成形; 用于将由成形元件成形的光束会聚在光学记录介质上的会聚元件; 以及用于检测基于零级衍射光束的电信号的检测器和包含在由光学记录介质反射的光束中的一级衍射光束。 成形元件以可摆动的方式设置，使得零级衍射光束入射到检测器上的光点位置与第一级衍射光束入射到检测器上的光斑位置之间的距离可以被调整 。

公开(公告)号：US06822934B2

公开(公告)日：2004-11-23

申请号：US09884890

申请日：2001-06-19

申请人： Seiji Nishiwaki ,  Yoichi Saito ,  Kazuo Momoo ,  Kenji Nagashima

发明人： Seiji Nishiwaki ,  Yoichi Saito ,  Kazuo Momoo ,  Kenji Nagashima

IPC分类号： G11B700

CPC分类号： G11B7/0906 ,  G11B7/0901 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1372 ,  G11B7/1381

摘要： An optical disc apparatus capable of mounting an optical disc includes a light source for emitting light; an objective lens for collecting the light emitted by the light source on the optical disc; a first light distribution section integrally movable with the objective lens, the first light distribution section including a first area and a second area, the first light distribution section outputting the light reflected by the optical disc and transmitted through the first area or the second area as transmission light, outputting the light reflected by the optical disc and diffracted by the first area as first diffraction light, and outputting the light reflected by the optical disc and diffracted by the second area as second diffraction light; a transmission light detection section for detecting the transmission light and outputting a TE1 signal indicating an offset of the detected transmission light; a first diffraction light detection section for detecting the first diffraction light and the second diffraction light, and outputting a TE2 signal indicating a difference between a light amount of the detected first diffraction light and a light amount of the detected second diffraction light; and a control device for generating a tracking error signal for the optical disc based on the TE1 signal and the TE2 signal.

摘要翻译： 能够安装光盘的光盘装置包括用于发光的光源; 用于收集由光源在光盘上发射的光的物镜; 所述第一配光部与所述物镜一体地移动，所述第一配光部包括第一区域和第二区域，所述第一配光部输出由所述光盘反射并经由所述第一区域或所述第二区域透射的光， 透射光，输出由光盘反射并被第一区域衍射的光作为第一衍射光，并输出由光盘反射并被第二区域衍射的光作为第二衍射光; 发送光检测部，用于检测发送光并输出表示所检测的发送光的偏移的TE1信号; 第一衍射光检测部分，用于检测第一衍射光和第二衍射光，并输出指示检测到的第一衍射光的光量与检测到的第二衍射光的光量之间的差的TE2信号; 以及用于基于TE1信号和TE2信号产生用于光盘的跟踪误差信号的控制装置。

公开(公告)号：US6014361A

公开(公告)日：2000-01-11

申请号：US57915

申请日：1998-04-09

申请人： Kenji Nagashima ,  Akihiro Sakaguchi ,  Hiroshi Gotou ,  Youichi Saitou

发明人： Kenji Nagashima ,  Akihiro Sakaguchi ,  Hiroshi Gotou ,  Youichi Saitou

IPC分类号： G11B7/09 ,  G11B7/135

CPC分类号： G11B7/1381 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1378 ,  G11B7/1398 ,  G11B7/0912

摘要： An optical head device of the present invention includes: a semiconductor laser for emitting a light beam; a first optical element for converting the light beam emitted from the semiconductor laser into collimated light having an elliptic beam shape; shaping means for shaping the beam shape of the collimated light from an ellipse to a circle; and a second optical element for directing the collimated light having the beam shape which has been shaped into a circle onto an optical information recording medium. The semiconductor laser is located so that a short axis direction of the ellipse is substantially parallel to a rotation axis direction of the optical information recording medium.

摘要翻译： 本发明的光头装置包括：用于发射光束的半导体激光器; 用于将从半导体激光器发射的光束转换成具有椭圆形光束的准直光的第一光学元件; 成形装置，用于将准直光的光束形状从椭圆形成圆形; 以及第二光学元件，用于将已经成形为圆形的具有光束形状的准直光引导到光学信息记录介质上。 半导体激光器被定位成使得椭圆的短轴方向基本上平行于光学信息记录介质的旋转轴线方向。

公开(公告)号：US09781352B2

公开(公告)日：2017-10-03

申请号：US14991488

申请日：2016-01-08

申请人： Kenji Nagashima

发明人： Kenji Nagashima

IPC分类号： H04N5/235 ,  H04N13/02 ,  H04N5/247 ,  H04N5/225

CPC分类号： H04N5/2353 ,  H04N5/2258 ,  H04N5/2351 ,  H04N5/247 ,  H04N13/296

摘要： An imaging apparatus includes a plurality of imaging sections that images an imaging region, a parallax information generator that generates parallax information based on images by the imaging sections, and an exposure amount controller that determines an exposure amount for use in the imaging sections in a subsequent imaging operation to increase a number of parallax values contained in a parallax value group of an image portion showing a target in the imaging region, wherein the exposure amount controller executes parallax information obtaining control that obtains the parallax information corresponding to a plurality of exposure amounts generated based on the images with the exposure amounts, and executes exposure amount identifying control that identifies the exposure amount corresponding to the parallax information having a maximum number of parallax values in the obtained parallax information to determine the exposure amount for use in the imaging sections based on the identified exposure amount.

公开(公告)号：US20130155336A1

公开(公告)日：2013-06-20

申请号：US13809717

申请日：2011-07-07

申请人： Kenji Nagashima

发明人： Kenji Nagashima

IPC分类号： H04N9/31 ,  G02B27/22 ,  G02F1/13

CPC分类号： H04N9/3129 ,  G02B26/101 ,  G02B27/22 ,  G02B27/2264 ,  G02B27/26 ,  G02B27/48 ,  G02F1/1313 ,  G03B21/14 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/2053 ,  G03B21/28 ,  H04N13/324 ,  H04N13/334 ,  H04N13/337 ,  H04N13/363 ,  H04N13/365

摘要： Provided is a projector capable of suppressing deterioration of a portion of a projection portion irradiated with a laser beam while improving brightness. This projector is formed to deviate optical axes of laser beams emitted from a plurality of laser beam generation portions respectively from each other so that the laser beams emitted from the plurality of laser beam generation portions respectively do not concentrate on one point of a projection portion.

摘要翻译： 本发明提供一种能够抑制由激光束照射的投影部的一部分的劣化同时提高亮度的投影机。 该投影仪形成为使从多个激光束产生部分发射的激光束的光轴分别偏离，使得从多个激光束产生部分发射的激光束分别不集中在突出部分的一个点上。

公开(公告)号：US20130127717A1

公开(公告)日：2013-05-23

申请号：US13812953

申请日：2011-07-14

申请人： Kenji Nagashima

发明人： Kenji Nagashima

IPC分类号： G06F3/0354 ,  G03B21/26

CPC分类号： G06F3/03547 ,  G03B21/26 ,  G06F3/0423 ,  G06F3/0488 ,  H04N9/3129

摘要： A projector capable of detecting the position of a detection object while suppressing complication of the structure is provided. This projector is so configured that the optical axes of a laser beam of visible light emitted from a first laser beam generation portion and a laser beam of invisible light emitted from a second laser beam generation portion substantially coincide with each other.

摘要翻译： 提供能够在抑制结构的复杂化的同时检测检测对象的位置的投影仪。 该投影仪被配置为使得从第一激光束产生部分发射的可见光的激光束的光轴和从第二激光束产生部分发射的不可见光的激光束基本上彼此重合。

公开(公告)号：US08011790B2

公开(公告)日：2011-09-06

申请号：US12267351

申请日：2008-11-07

申请人： Kenji Nagashima ,  Atsuhiko Chikaoka ,  Seiji Takemoto ,  Hiroki Matsubara

发明人： Kenji Nagashima ,  Atsuhiko Chikaoka ,  Seiji Takemoto ,  Hiroki Matsubara

IPC分类号： G03B21/22

CPC分类号： H04N9/3164 ,  G03B21/10 ,  G03B21/28 ,  G03B21/58 ,  G03B21/62 ,  H04N9/3129 ,  H04N9/3173 ,  H04N9/3194

摘要： An image display apparatus is provided that allows a user to check image content even in a place where there is no projection screen. A projector that is one mode of the image display apparatus includes a casing, a projection aperture provided in the casing, and an internal projection mirror and a built-in screen that are provided in a casing. When the projector is being folded, laser light emitted from the projection aperture is reflected by the internal projection mirror. The reflected light is projected onto the built-in screen, whereby an image is displayed.

摘要翻译： 提供一种图像显示装置，其允许用户即使在没有投影屏幕的地方也检查图像内容。 作为图像显示装置的一种模式的投影仪包括壳体，设置在壳体中的突起孔以及设置在壳体中的内部投影镜和内置屏幕。 当投影机被折叠时，从投影孔射出的激光被内部投影镜反射。 反射光投射到内置屏幕上，从而显示图像。

公开(公告)号：US07586819B2

公开(公告)日：2009-09-08

申请号：US11598729

申请日：2006-11-14

申请人： Kenji Nagashima

发明人： Kenji Nagashima

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/1275 ,  G11B7/13 ,  G11B2007/0006

摘要： An optical pickup device includes a two-wavelength composite light source that can emit laser beams for a CD and for a DVD, a light source that can emit a laser beam for a BD, a hologram element and a photo detector. When spots formed on the photo detector by 0 order light generated by diffraction of the three laser beams in the hologram element are first, second and third spots in the descending order of the wavelength of the laser beams, an attachment angle of the two-wavelength composite light source is adjusted so that positions of the third spot and the second spot match substantially each other while a position of the first spot is shifted from the position of the second spot in the same direction as a diffraction direction of +1st diffracted light.

摘要翻译： 光学拾取装置包括可以发射用于CD和DVD的激光束的双波长复合光源，可以发射用于BD的激光束的光源，全息元件和光电检测器。 当通过在全息元件中的三个激光束的衍射产生的0阶光在光检测器上形成的光斑是激光束的波长的降序的第一，第二和第三光斑时，两波长的附着角度 调整复合光源，使得第一光点的位置与第一光点的位置沿与+第一衍射光的衍射方向相同的方向从第二光点的位置偏移大致彼此匹配。

公开(公告)号：US20080239928A1

公开(公告)日：2008-10-02

申请号：US12055025

申请日：2008-03-25

申请人： Yuichi Kamioka ,  Kazuhiro Takahashi ,  Kenji Nagashima ,  Noritaka Tanabe ,  Tatsuya Ito

发明人： Yuichi Kamioka ,  Kazuhiro Takahashi ,  Kenji Nagashima ,  Noritaka Tanabe ,  Tatsuya Ito

IPC分类号： G11B7/135

CPC分类号： G11B7/1395 ,  G11B7/1275 ,  G11B7/1362 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens corresponding to a BD beam light, and an objective lens corresponding to a DVD/CD beam light are arranged parallel to an optical disc. One rising mirror is arranged in a tilted manner on a side opposite to the optical disc of the objective lenses. A first film for reflecting the BD beam light emitted from a laser diode and making the beam light enter the objective lens and transmitting the DVD/CD beam light emitted from a laser diode is arranged on one of the parallel surfaces of a transparent substrate of the rising mirror. A second film for reflecting the DVD/CD beam light transmitted through the first film and the transparent substrate and making the beam light enter the objective lens is arranged on the other surface. An incident optical axis to each objective lens of the BD beam light and the DVD/CD beam light is branched with the rising mirror.

摘要翻译： 对应于BD光束的物镜和与DVD / CD光束光相对应的物镜平行于光盘布置。 一个上升的镜子倾斜地配置在与物镜的光盘相对的一侧上。 用于反射从激光二极管发射的BD光束并使光束进入物镜并将从激光二极管发射的DVD / CD光束透射的第一胶片布置在其中的一个平行表面上， 上升的镜子。 用于反射透过第一膜和透明基板并使光束进入物镜的DVD / CD光束光的第二膜布置在另一表面上。 BD光束的每个物镜的入射光轴和DVD / CD光束的光被上升的镜子分支。