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    Optical device having two optical waveguides connected and a method of producing the same
    12.
    发明授权
    Optical device having two optical waveguides connected and a method of producing the same 失效
    具有连接的两个光波导的光学器件及其制造方法

    公开(公告)号：US5410623A

    公开(公告)日：1995-04-25

    申请号：US111144

    申请日：1993-08-24

    申请人： Kouji Minami ,  Kuniaki Okada ,  Renzaburo Miki ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    发明人： Kouji Minami ,  Kuniaki Okada ,  Renzaburo Miki ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    IPC分类号： G02B6/122 ,  G02B6/12 ,  G02B6/132 ,  G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/132 ,  G02B6/262 ,  G02B6/4207 ,  G02B2006/12038 ,  G02B2006/12095 ,  G02B2006/12116 ,  G02B2006/12195

    摘要： An optical device includes: a first dielectric slab waveguide having an effective refractive index N.sub.1 ; a second dielectric slab waveguide having an effective refractive index N.sub.2 ; and a third dielectric slab waveguide having a length 1 and an effective refractive index N.sub.3, the third dielectric slab waveguide being formed between the first dielectric slab waveguide and the second dielectric slab waveguide so as to connect the first dielectric slab waveguide with the second dielectric slab waveguides optically; wherein the length I and the effective refractive index N.sub.3 substantially satisfy following equations; ##EQU1## where .lambda. is a free-space wavelength of light traveling in the optical device and the light travels from the first dielectric slab waveguide to the third dielectric slab waveguide at an incident angle .THETA. in a single mode.

    摘要翻译： 光学装置包括：具有有效折射率N1的第一电介质平板波导; 具有有效折射率N2的第二电介质平板波导; 以及具有长度1和有效折射率N3的第三电介质平板波导，所述第三电介质平板波导形成在所述第一电介质平板波导和所述第二电介质平板波导之间，以将所述第一电介质平板波导与所述第二电介质平板 光波导; 其中长度I和有效折射率N3基本上满足以下等式; 其中λ是在光学器件中行进的光的自由空间波长，并且光以单一模式以入射角THETA从第一电介质平板波导传播到第三电介质平板波导。

    Method for producing a tapered waveguide
    14.
    发明授权
    Method for producing a tapered waveguide 失效
    锥形波导的制造方法

    公开(公告)号：US5576149A

    公开(公告)日：1996-11-19

    申请号：US337247

    申请日：1994-11-10

    申请人： Hiroyuki Yamamoto ,  Yukio Kurata ,  Keiji Sakai ,  Yoshio Yoshida ,  Kuniaki Okada ,  Kouji Minami

    发明人： Hiroyuki Yamamoto ,  Yukio Kurata ,  Keiji Sakai ,  Yoshio Yoshida ,  Kuniaki Okada ,  Kouji Minami

    IPC分类号： G02B6/42 ,  G02B6/122 ,  G02B6/13 ,  G02B6/132 ,  G03C5/00

    CPC分类号： G02B6/132 ,  G02B6/122

    摘要： A method for producing a tapered waveguide layer is disclosed. The method includes the steps of: forming a resist pattern on a substrate; setting the substrate in an apparatus for forming a film such that particles constituting the film reach the substrate from a direction which is oblique relative to the substrate; forming the film on a region of a surface of the substrate which is not covered by the resist pattern, the film having a thickness distribution corresponding to a shadow which the resist pattern creates on the substrate in accordance with an angle between the substrate and the direction; and removing the resist pattern, thereby forming the tapered waveguide layer consisting of the film on the substrate.

    摘要翻译： 公开了一种用于制造锥形波导层的方法。 该方法包括以下步骤：在衬底上形成抗蚀剂图案; 将基板设置在用于形成膜的装置中，使得构成膜的颗粒从相对于基板倾斜的方向到达基板; 在未被抗蚀剂图案覆盖的基板的表面的区域上形成膜，该膜具有与基板上的抗蚀剂图案在基板上形成的阴影相对应的厚度分布，该厚度分布根据基板和方向之间的角度 ; 并除去抗蚀剂图案，由此在基板上形成由膜构成的锥形波导层。

    Optical integrated circuit having light detector
    15.
    发明授权
    Optical integrated circuit having light detector 失效
    具有光检测器的光集成电路

    公开(公告)号：US5410622A

    公开(公告)日：1995-04-25

    申请号：US109275

    申请日：1993-08-19

    申请人： Kuniaki Okada ,  Kouji Minami ,  Renzaburo Miki ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    发明人： Kuniaki Okada ,  Kouji Minami ,  Renzaburo Miki ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    IPC分类号： G02B6/122 ,  G02B6/12 ,  G02B6/34 ,  G02B6/42 ,  H01L31/0232 ,  H01L31/0236

    CPC分类号： G02B6/42 ,  G02B6/12004 ,  H01L31/0232 ,  H01L31/0236 ,  Y02E10/50

    摘要： An optical integrated circuit is disclosed. The optical integrated circuit includes: a dielectric waveguide having at least a waveguide layer for transmitting light in a first direction; a first reflector for reflecting the light in a substantially opposite direction to the first direction, the first reflector being formed on an end face of the waveguide layer; a grating coupler having a grating for diffracting at least a part of the light in a second direction which is different from the first direction, the grating coupler being formed at a surface of the waveguide layer; and a light detector for detecting the diffracted light, the light detector being optically connected with the dielectric waveguide.

    摘要翻译： 公开了一种光学集成电路。 光集成电路包括：至少具有用于沿第一方向透射光的波导层的电介质波导; 第一反射器，用于以与第一方向大致相反的方向反射光，第一反射器形成在波导层的端面上; 光栅耦合器，具有用于沿与第一方向不同的第二方向衍射至少一部分光的光栅，所述光栅耦合器形成在所述波导层的表面; 以及用于检测衍射光的光检测器，光检测器与电介质波导光学连接。

    Information recording apparatus, information reproducing apparatus and information recording/reproducing apparatus, according to hologram method
    16.
    发明申请
    Information recording apparatus, information reproducing apparatus and information recording/reproducing apparatus, according to hologram method 审中-公开
    信息记录装置，信息再现装置和信息记录/再现装置，根据全息图方法

    公开(公告)号：US20060262701A1

    公开(公告)日：2006-11-23

    申请号：US11434428

    申请日：2006-05-11

    申请人： Kuniaki Okada ,  Yukio Kurata ,  Tetsuo Saeki

    发明人： Kuniaki Okada ,  Yukio Kurata ,  Tetsuo Saeki

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0065

    摘要： A holographic recording/reproducing apparatus controls a position and an area size of a signal light and/or a reference light in a holographic recording medium by a spatial light amplitude modulator. Thus, the holographic recording/reproducing apparatus can set the position and the area size of the signal light and/or the reference light arbitrarily by using a spatial light amplitude modulator of high resolution as the spatial light amplitude modulator. Further, by controlling the position of the reference light by the spatial light amplitude modulator, the holographic recording/reproducing apparatus can change the incident angle on the holographic recording medium. Angle multiplex recording can thus be realized.

    摘要翻译： 全息记录/再现装置通过空间光振幅调制器控制全息记录介质中的信号光和/或参考光的位置和面积大小。 因此，全息记录/再现装置可以通过使用高分辨率的空间光振幅调制器作为空间光振幅调制器来任意地设置信号光和/或参考光的位置和面积大小。 此外，通过由空间光振幅调制器控制参考光的位置，全息记录/再现装置可改变全息记录介质上的入射角。 因此可以实现角度多重记录。

    Exposing apparatus and exposing method for microlens array
    17.
    发明授权
    Exposing apparatus and exposing method for microlens array 失效

    公开(公告)号：US06822799B2

    公开(公告)日：2004-11-23

    申请号：US10650599

    申请日：2003-08-27

    申请人： Kazuya Kitamura ,  Kuniaki Okada ,  Yoshihiro Sekimoto ,  Yukio Kurata ,  Hiroshi Nakanishi

    发明人： Kazuya Kitamura ,  Kuniaki Okada ,  Yoshihiro Sekimoto ,  Yukio Kurata ,  Hiroshi Nakanishi

    IPC分类号： G02B2710

    CPC分类号： G03B21/208

    摘要： An exposing apparatus for a microlens array allows for easy alignment and attains high accuracy. An exposing method for a microlens array attains high accuracy and high light efficiency. The exposing apparatus for a microlens array includes a micro fly-eye lens for converting a light beam from a light source into a secondary point light source, a transmittance distribution mask for adjusting the luminance of the light of the secondary point light source, and a collimator lens for converting the light of adjusted luminance into a parallel light beam and for guiding the parallel light beam, via a first microlens array which is formed in advance, to a photosensitive resin layer to be a second microlens array. The light emitted from the light source is transmitted through the micro fly-eye lens, the transmittance distribution mask, and the collimator lens. The light is then adjusted to a desired luminance to expose the photosensitive resin of a microlens substrate.

    Compact optical pickup device with beam splitter
    18.
    发明授权
    Compact optical pickup device with beam splitter 失效
    带光束分离器的紧凑型光学拾取装置

    公开(公告)号：US5726962A

    公开(公告)日：1998-03-10

    申请号：US465886

    申请日：1995-06-06

    申请人： Kuniaki Okada ,  Kohji Minami ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    发明人： Kuniaki Okada ,  Kohji Minami ,  Hiroyuki Yamamoto ,  Yoshio Yoshida ,  Yukio Kurata

    IPC分类号： G02B6/122 ,  G02B6/42 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/00

    CPC分类号： G11B11/10543 ,  G11B7/124

    摘要： The optical pickup device according to the present invention, includes: a light emitting diode for emitting a light beam; a collimating lens for collimating the light beam; an objective lens for focusing the collimated light beam from the collimating lens onto a recording medium; a beam splitter for splitting the light beam returned from the recording medium into two light beams; a servo error signal detector for receiving one of the two light beams and detecting a servo error signal; a diffracting element for diffracting the one of the two light beams from the beam splitter to direct the one of the two light beams toward the servo error signal detector; and an optical waveguide element for receiving the other one of the two light beams and detecting a magneto-optical signal, the other one of the two light beams from the beam splitter being incident upon the optical waveguide element without passing through the diffracting element, wherein the beam splitter is disposed between the collimating lens and the diffracting element.

    摘要翻译： 根据本发明的光拾取装置包括：用于发射光束的发光二极管; 用于准直光束的准直透镜; 用于将来自准直透镜的准直光束聚焦到记录介质上的物镜; 用于将从记录介质返回的光束分成两束光束的分束器; 伺服误差信号检测器，用于接收两个光束中的一个并检测伺服误差信号; 衍射元件，用于将来自分束器的两个光束中的一个衍射，以将两个光束中的一个导向伺服误差信号检测器; 以及用于接收两个光束中的另一个并检测磁光信号的光波导元件，来自分束器的两个光束中的另一个光束入射到光波导元件上而不穿过衍射元件，其中 分束器设置在准直透镜和衍射元件之间。

    Pickup device for a magneto-optical information recording system
    20.
    发明授权
    Pickup device for a magneto-optical information recording system 失效
    用于磁光信息记录系统的拾取装置

    公开(公告)号：US5428584A

    公开(公告)日：1995-06-27

    申请号：US97399

    申请日：1993-07-23

    申请人： Yoshio Yoshida ,  Hiroyuki Yamamoto ,  Renzaburou Miki ,  Kuniaki Okada ,  Yukio Kurata ,  Kouji Minami

    发明人： Yoshio Yoshida ,  Hiroyuki Yamamoto ,  Renzaburou Miki ,  Kuniaki Okada ,  Yukio Kurata ,  Kouji Minami

    IPC分类号： G11B7/135 ,  G11B7/12 ,  G11B7/13 ,  G11B11/10 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10543 ,  G11B7/124 ,  G11B7/13

    摘要： An optical information reproducing device includes a light source for generating a light beam, an optical system for converging the light beam generated by the light source on a magneto-optical recording medium on which recording information is recorded and for converging a return light beam reflected from the magneto-optical recording medium, beam splitting means for splitting the return light beam into split light beams, first detecting means for receiving one of the split light beams to detect the intensity of the one of the split light beams, servo signal generating means for generating a tracking error signal and a focusing error signal based on the output of the first detecting means, an optical waveguide disposed between the beam splitting means and the first detecting means, the optical waveguide crossing an optical axis of the one of the split light beams, an optical coupler disposed on the optical waveguide for separating part of the one of the split light beams from the one of the split beams to form a guided light beam which is guided in the optical waveguide, second detecting means for receiving the guided light beam from the optical waveguide to detect the intensity of at least one polarization component of the guided light beam, and information signal reproducing means for reproducing the recording information based on the output of the second detecting means.

    摘要翻译： 一种光学信息再现装置，包括用于产生光束的光源，用于将由光源产生的光束会聚在其上记录有记录信息的磁光记录介质上并用于会聚从 磁光记录介质，用于将返回光束分成分束光束的分束装置;第一检测装置，用于接收分束光束中的一个以检测一个分束光束的强度;伺服信号产生装置， 基于所述第一检测装置的输出产生跟踪误差信号和聚焦误差信号;布置在所述分束装置和所述第一检测装置之间的光波导，所述光波导与所述一个所述分束光束 设置在所述光波导上的光耦合器，用于将所述一个所述分束光束的一部分分离 以形成在光波导中被引导的引导光束;第二检测装置，用于接收来自光波导的引导光束，以检测被引导光束的至少一个偏振分量的强度;以及信息信号 再现装置，用于基于第二检测装置的输出再现记录信息。