公开(公告)号：US4861128A

公开(公告)日：1989-08-29

申请号：US151964

申请日：1988-02-03

申请人： Sachiko Ishikawa ,  Akira Arimoto

发明人： Sachiko Ishikawa ,  Akira Arimoto

IPC分类号： G02B6/122 ,  G11B7/135

CPC分类号： G11B7/1384

摘要： An optical pickup comprising a semiconductor laser, a first waveguide for leading light emitted by the semiconductor laser to recording medium and coupling again light returning from the recording medium; splitting element for separating the light returning from the recording medium from the first waveguide path; and a second waveguide propagating light returning from the recording medium and separated by the splitting element; wherein light going towards the recording medium and light returning from the recording medium propagate separately in the first and the second waveguide so that the utilization efficiency of the light is increased.

摘要翻译： 一种包括半导体激光器的光学拾取器，用于将由半导体激光器发射的光引导到记录介质并再次耦合从记录介质返回的光的第一波导; 分离元件，用于将从记录介质返回的光与第一波导路径分离; 以及第二波导传播从记录介质返回并被分离元件分离的光; 其中朝向记录介质的光和从记录介质返回的光分别在第一和第二波导中传播，使得光的利用效率增加。

公开(公告)号：US4929044A

公开(公告)日：1990-05-29

申请号：US193594

申请日：1988-05-13

申请人： Akira Arimoto ,  Sachiko Ishikawa ,  Keiji Kataoka

发明人： Akira Arimoto ,  Sachiko Ishikawa ,  Keiji Kataoka

IPC分类号： G11B7/12 ,  G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/1245

摘要： An optical pickup comprises at least a semiconductor laser, a waveguide optically coupled with the semiconductor laser for propagating therein a light from the semiconductor to guide it to a recording medium and a light deflector element provided on the waveguide for deflecting the light propagated in the waveguide by means of a surface acoustic wave. A multi-mode oscillation laser capable of stably operating in longitudinal modes the number of which is not larger than 5 is used as the semiconductor laser. The semiconductor laser is disposed in proximity to the waveguide at a distance not larger than 1 .mu.m, thereby inputting the light from the semiconductor laser into the waveguide with a high efficiency. A frequency applied to the light deflector element may be changed upon change between a read-out state and a write-in state so that a light spot on the recording medium is held at a predetermined position (track or address). In the case where a grating is used as a light coupling element between the waveguide and the exterior thereof, a hologram grating is disposed in a path of the light derived through the light coupling grating from the waveguide to the exterior thereof so that a chromatic aberration produced at the light coupling grating due to a change in wavelength of the semiconductor laser is cancelled by that produced at the hologram grating.

摘要翻译： 光学拾取器包括至少半导体激光器，与半导体激光器光学耦合的波导，用于在其中传播来自半导体的光以将其引导到记录介质，以及设置在波导上的光偏转元件，用于偏转在波导中传播的光 借助于表面声波。 作为半导体激光器，使用能够稳定地以纵向模式操作的多模振荡激光器，其数量不大于5。 半导体激光器以不大于1μm的距离布置在波导附近，从而将来自半导体激光器的光以高效率输入到波导中。 在读出状态和写入状态之间变化时，施加到光偏转元件的频率可以改变，使得记录介质上的光点保持在预定位置（轨道或地址）。 在将光栅用作波导及其外部之间的光耦合元件的情况下，全息光栅设置在通过光耦合光栅从光波导到其外部的光的路径中，使得色差 由于半导体激光器的波长的变化，在光耦合光栅处产生的光线被全息光栅所产生的消除。

公开(公告)号：US20060013535A1

公开(公告)日：2006-01-19

申请号：US10701625

申请日：2003-11-06

申请人： Masahiro Fushimi ,  Eiichi Ito ,  Tomohiro Fujita ,  Tadashi Minakuchi ,  Akira Arimoto ,  Mitsunori Iima ,  Yoshimi Obara ,  Shinji Tsukamoto ,  Ryoichi Nakanishi

发明人： Masahiro Fushimi ,  Eiichi Ito ,  Tomohiro Fujita ,  Tadashi Minakuchi ,  Akira Arimoto ,  Mitsunori Iima ,  Yoshimi Obara ,  Shinji Tsukamoto ,  Ryoichi Nakanishi

IPC分类号： G02B6/26 ,  G02B6/42 ,  G02B6/32 ,  G02B6/36

CPC分类号： G02B6/4222 ,  G02B6/4227

摘要： An optical communication device includes a light source that emits a light beam and an optical fiber having a core and a cladding. The optical fiber has a light entrance face having a core region and a cladding region. The light beam emitted by the light source is converged by a converging lens on the core region and is transmitted through the optical fiber. The entrance face is configured to generate a light intensity distribution in light reflected by the light entrance face depending on a position where the light beam is incident on the entrance face, a converging lens arranged between the light source and the optical fiber.

摘要翻译： 光通信装置包括发射光束的光源和具有芯和包层的光纤。 光纤具有具有芯区域和包层区域的光入射面。 由光源发射的光束由会聚透镜会聚在芯区域上，并透过光纤。 入射面被配置为根据光入射在入射面上的位置产生由光入射面反射的光的光强度分布，配置在光源和光纤之间的会聚透镜。

公开(公告)号：US06705730B2

公开(公告)日：2004-03-16

申请号：US09942724

申请日：2001-08-31

申请人： Tetsuya Ohshima ,  Hiroki Kaneko ,  Kazutaka Tsuji ,  Akira Arimoto ,  Osamu Ebina ,  Masahiko Yatsu

发明人： Tetsuya Ohshima ,  Hiroki Kaneko ,  Kazutaka Tsuji ,  Akira Arimoto ,  Osamu Ebina ,  Masahiko Yatsu

IPC分类号： G03B2100

CPC分类号： H04N9/3152 ,  G02B27/225 ,  H04N5/7416 ,  H04N5/7441 ,  H04N9/3102 ,  H04N13/305 ,  H04N13/363

摘要： It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. 1, a light valve 103 of a projector is located roughly at the focus point of an illumination lens 102. Further, as shown in FIG. 2, a light source 101 is also located roughly at the focus point of the illumination lens 102. Consequently, it is possible to implement a miniaturized projector.

摘要翻译： 本发明的目的是实现一种提供高光学效率的显示器，而不管光阀的尺寸如何，并且能够增强要投射的图像的亮度的均匀性。 为了实现上述目的，例如，如图1所示， 如图1所示，投影仪的光阀103大致位于照明透镜102的焦点处。 如图2所示，光源101也大致位于照明透镜102的焦点处。因此，可以实现小型化的投影仪。

公开(公告)号：US06686976B2

公开(公告)日：2004-02-03

申请号：US09870933

申请日：2001-06-01

申请人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

发明人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

IPC分类号： G02F1136

CPC分类号： G02F1/136277 ,  G02F1/133512 ,  G09G2310/0289

摘要： A liquid crystal light valve includes a semiconductor substrate having a region for a plurality of switching elements formed in a matrix form. A first metal layer is formed on the surface of the semi-conductor substrate through an insulating layer and divided into a plurality of parts by first slits. A second metal layer is formed on the first metal layer through another insulating layer and divided into a plurality of parts by second slits. A third metal layer is formed on the second metal layer through still another insulating layer and divided into a plurality of parts by third slits. An opposite substrate has an opposite electrode on a surface thereof, disposed so as to be opposite to said third metal layer through an interval on the opposite electrode side. Liquid crystal fills the interval between said opposite electrode and the third metal layer.

摘要翻译： 液晶光阀包括具有以矩阵形式形成的多个开关元件的区域的半导体衬底。 第一金属层通过绝缘层形成在半导体基板的表面上，并通过第一狭缝分成多个部分。 第二金属层通过另一绝缘层形成在第一金属层上，并通过第二狭缝分成多个部分。 第三金属层通过另一绝缘层形成在第二金属层上，并由第三狭缝分成多个部分。 相对的基板在其表面上具有相对电极，通过相对电极侧的间隔设置成与所述第三金属层相对。 液晶填充所述相对电极和第三金属层之间的间隔。

公开(公告)号：US06437842B1

公开(公告)日：2002-08-20

申请号：US09465422

申请日：1999-12-16

申请人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

发明人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

IPC分类号： G02F11335

CPC分类号： G02F1/136277 ,  G02F1/133512 ,  G09G2310/0289

摘要： A liquid crystal light valve includes a semiconductor substrate having a region for a plurality of switching elements formed in a matrix form. A first metal layer is formed on the surface of the semi-conductor substrate through an insulating layer and divided into a plurality of parts by first slits. A second metal layer is formed on the first metal layer through another insulating layer and divided into a plurality of parts by second slits. A third metal layer is formed on the second metal layer through still another insulating layer and divided into a plurality of parts by third slits. An opposite substrate has an opposite electrode on a surface thereof, disposed so as to be opposite to said third metal layer through an interval on the opposite electrode side. Liquid crystal fills the interval between said opposite electrode and the third metal layer.

摘要翻译： 液晶光阀包括具有以矩阵形式形成的多个开关元件的区域的半导体衬底。 第一金属层通过绝缘层形成在半导体基板的表面上，并通过第一狭缝分成多个部分。 第二金属层通过另一绝缘层形成在第一金属层上，并通过第二狭缝分成多个部分。 第三金属层通过另一绝缘层形成在第二金属层上，并由第三狭缝分成多个部分。 相对的基板在其表面上具有相对电极，通过相对电极侧的间隔设置成与所述第三金属层相对。 液晶填充所述相对电极和第三金属层之间的间隔。

公开(公告)号：US6122465A

公开(公告)日：2000-09-19

申请号：US401692

申请日：1995-03-10

申请人： Ikuo Hiyama ,  Akira Arimoto ,  Masato Shimura

发明人： Ikuo Hiyama ,  Akira Arimoto ,  Masato Shimura

IPC分类号： G02B5/32 ,  G02F1/1335 ,  G02F1/13357

CPC分类号： G02F1/133621 ,  G02F1/133526 ,  G02F2001/133607 ,  G02F2001/133616

摘要： A color liquid crystal display device includes a liquid crystal element, an optical path conversion element array and a hologram. The liquid crystal element has a blue pixel B, a red pixel R, and a green pixel G, which are arranged plainly, and a liquid crystal layer. The optical path conversion element array converts external light into approximately parallel light. The hologram separates light from the optical path conversion element array into a light having a wavelength range of the three primary colors and irradiates pixels R, G and B corresponding to the liquid crystal element.

摘要翻译： 彩色液晶显示装置包括液晶元件，光路转换元件阵列和全息图。 液晶元件具有蓝色像素B，红色像素R和绿色像素G，它们被平坦地布置，并且具有液晶层。 光路转换元件阵列将外部光转换成近似平行的光。 全息图将光路转换元件阵列的光分离成具有三原色的波长范围的光并照射与液晶元件对应的像素R，G和B.

公开(公告)号：US06034749A

公开(公告)日：2000-03-07

申请号：US485157

申请日：1995-06-07

申请人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

发明人： Hideo Sato ,  Minoru Hoshino ,  Yuji Mori ,  Shinichi Komura ,  Yoshiharu Nagae ,  Ichirou Katsuyama ,  Tetsuya Nagata ,  Akira Arimoto ,  Akio Hayasaka

IPC分类号： G02F1/1335 ,  G02F1/1362 ,  G02F1/136

CPC分类号： G02F1/136277 ,  G02F1/133512 ,  G09G2310/0289

摘要： A liquid crystal light valve includes a semiconductor substrate having a region for a plurality of switching elements formed in a matrix form. A first metal layer is formed on the surface of the semiconductor substrate through an insulating layer and divided into a plurality of parts by first slits. A second metal layer is formed on the first metal layer through another insulating layer and divided into a plurality of parts by second slits. A third metal layer is formed on the second metal layer through still another insulating layer and divided into a plurality of parts by third slits. An opposite substrate has an opposite electrode on a surface thereof, disposed so as to be opposite to said third metal layer through an interval on the opposite electrode side. Liquid crystal fills the interval between said opposite electrode and the third metal layer.

摘要翻译： 液晶光阀包括具有以矩阵形式形成的多个开关元件的区域的半导体衬底。 第一金属层通过绝缘层形成在半导体衬底的表面上，并通过第一狭缝分成多个部分。 第二金属层通过另一绝缘层形成在第一金属层上，并通过第二狭缝分成多个部分。 第三金属层通过另一绝缘层形成在第二金属层上，并由第三狭缝分成多个部分。 相对的基板在其表面上具有相对电极，通过相对电极侧的间隔设置成与所述第三金属层相对。 液晶填充所述相对电极和第三金属层之间的间隔。

公开(公告)号：US5889748A

公开(公告)日：1999-03-30

申请号：US772874

申请日：1996-12-26

申请人： Takeshi Shimano ,  Masayuki Inoue ,  Akira Arimoto ,  Hiroyuki Minemura ,  Hisao Fujita ,  Hideaki Koyanagi

发明人： Takeshi Shimano ,  Masayuki Inoue ,  Akira Arimoto ,  Hiroyuki Minemura ,  Hisao Fujita ,  Hideaki Koyanagi

IPC分类号： G02B13/00 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1381 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006 ,  G11B2007/13727

摘要： The objective lens has a numerical aperture NA=0.6 when reproducing a DVD having a thickness of 0.6 mm and NA=0.42 when reproducing a CD having a thickness of 1.2 mm. At a boundary of NA 0.42, a slight stepped portion is formed so as to establish a phase difference. In this case, a designed wavelength is 0.635 .mu.m, and an optimum designed substrate thickness of a central portion is approximately 0.8 mm. While the DVD is reproduced, wave front aberration is on the order of 0.025.lambda., and jitter contained in the reproduction signal of the CD is equivalent to the present jitter. As a consequence, such an objective lens and an optical head with employment of this objective lens are provided, which precisely reproduce signals from the CD having the substrate thickness of 1.2 mm, and the DVD having the substrate thickness of 0.6 mm.

摘要翻译： 当再现厚度为1.2mm的CD时，物镜在再现厚度为0.6mm的DVD和NA = 0.42时具有数值孔径NA = 0.6。 在NA 0.42的边界处，形成一个微小的台阶部分以形成相位差。 在这种情况下，设计波长为0.635μm，中心部分的最佳设计基板厚度为约0.8mm。 当DVD被再现时，波前像差在0.025λ的数量级，并且包含在CD的再现信号中的抖动等于当前的抖动。 因此，提供这样的物镜和使用这种物镜的光学头，其精确地再现了具有1.2mm的衬底厚度的CD的信号，以及具有0.6mm的衬底厚度的DVD。

公开(公告)号：US5420846A

公开(公告)日：1995-05-30

申请号：US021907

申请日：1993-02-23

申请人： Hisataka Sugiyama ,  Akira Arimoto ,  Motoyasu Terao ,  Norio Murase ,  Kimio Tatsuno ,  Masahiko Takahashi ,  Fumiyoshi Kirino ,  Fumio Kugiya

发明人： Hisataka Sugiyama ,  Akira Arimoto ,  Motoyasu Terao ,  Norio Murase ,  Kimio Tatsuno ,  Masahiko Takahashi ,  Fumiyoshi Kirino ,  Fumio Kugiya

IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/085 ,  G11B7/24 ,  G11B7/257 ,  G11B7/00 ,  G11B15/087

CPC分类号： G11B7/24 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/08505 ,  G11B7/257 ,  G11B7/252

摘要： An information recording medium includes an information recording layer on which at least information is to be recorded by irradiating light, and a light transmission restricting layer which has a plurality of nonlinear transmission characteristics or nonlinear reflection characteristics for the intensity of the light irradiated and which has an optical material for restricting the transmission or reflection of the light according to the respective characteristics when the light is irradiated onto the information recording layer. An information recording and reproducing unit uses the information recording medium and includes an information recording position setting unit for deciding a position at which information is to be recorded on the information recording medium by detecting a direction of an easy magnetization axis. With the above arrangement, the spot diameter of the light can be distinguished between the one when information is reproduced and the one when information is recorded on the information recording medium respectively, to thereby ensure an accurate positioning of the head on the tracks of the recording medium.

摘要翻译： 信息记录介质包括至少要通过照射光记录信息的信息记录层，以及具有多个非线性传输特性或非线性反射特性的光传输限制层，用于所照射的光的强度， 光学材料，用于当光照射到信息记录层上时，根据各自的特性来限制光的透射或反射。 信息记录和再现单元使用信息记录介质，并且包括信息记录位置设置单元，用于通过检测易磁化轴的方向来确定要在信息记录介质上记录信息的位置。 通过上述配置，当信息被再现时，光的光点直径可以区别于信息记录介质上的信息的一个，从而确保头在记录的轨道上的准确定位 中。