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1. 发明授权

US5446719A Optical information reproducing apparatus 失效
标题翻译：光信息重放装置
公开(公告)号：US5446719A
公开(公告)日：1995-08-29
申请号：US13038
申请日：1993-02-03
申请人： Yoshio Yoshida , Yukio Kurata , Shigeki Tsuji
发明人： Yoshio Yoshida , Yukio Kurata , Shigeki Tsuji
IPC分类号： G11B7/12 , G11B7/135 , G11B7/00 , G11B7/13
CPC分类号： G11B7/1353 , G11B7/123
摘要： An optical information reproducing apparatus of the invention includes a light emitting and receiving unit and an optical system. The optical system converges light from the light emitting and receiving unit on a recording medium and converges the light after reflected by the recording medium. The light emitting and receiving unit includes: a semiconductor laser device disposed on a substrate for generating light; a photo detector formed, integrally with the substrate, on the substrate on which the semiconductor laser device is disposed, for outputting a signal corresponding to the intensity of light incident thereon; and a beam splitter provided on an optical axis of the reflected light, the beam splitter leading part of the reflected light to the photo detector.
摘要翻译：本发明的光信息再现装置包括发光和接收单元和光学系统。光学系统将来自发光和接收单元的光会聚在记录介质上，并在被记录介质反射之后会聚该光。发光和接收单元包括：设置在用于产生光的基板上的半导体激光器件; 与基板一体形成的光电检测器，其上设置有半导体激光装置的基板，用于输出对应于入射到其上的光的强度的信号; 以及设置在反射光的光轴上的分束器，分束器将反射光的一部分引导到光电检测器。

2. 发明授权

US4989192A Optical pickup apparatus and optical grating assembly therefor 失效
公开(公告)号：US4989192A
公开(公告)日：1991-01-29
申请号：US235901
申请日：1988-08-24
申请人： Yukio Kurata , Hiroshi Ogata , Hikaru Nishihara , Mitsuharu Tomura , Shigeki Tsuji
发明人： Yukio Kurata , Hiroshi Ogata , Hikaru Nishihara , Mitsuharu Tomura , Shigeki Tsuji
摘要： An optical pickup apparatus for optically reading the data stored in a flat information carrier disc in the form of tiny pits. The pickup apparatus directs a beam of light from a light source to the disc surface. The impinging beam is modulated by the data pits and reflected back to a photodector. A novel optical grating assembly is disposed between the light source and the information disc, and includes a diffraction grating for the light beam from the source and a holographic grating for directing part of the light beam reflected by the disc to the photodetector. The diffraction and holographic gratings are formed integral with each other into the grating assembly.

3. 发明授权

US5391865A Optical pickup apparatus and optical grating assembly therefor 失效
标题翻译：光拾取装置及其光栅组件
公开(公告)号：US5391865A
公开(公告)日：1995-02-21
申请号：US655231
申请日：1991-01-22
申请人： Yukio Kurata , Hiroshi Ogata , Hikaru Nishihara , Mitsuharu Tomura , Shigeki Tsuji
发明人： Yukio Kurata , Hiroshi Ogata , Hikaru Nishihara , Mitsuharu Tomura , Shigeki Tsuji
IPC分类号： G11B7/09 , G11B7/135 , G01J1/20
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0909 , G11B7/0916 , G11B7/1381
摘要： An optical pickup apparatus for optically reading the data stored in a flat information carrier disc in the form of tiny pits. The pickup apparatus directs a beam of light from a light source to the disc surface. The impinging beam is modulated by the data pits and reflected back to a photodetector. A novel optical grating assembly is disposed between the light source and the information disc, and includes a diffraction grating for the light beam from the source and a holographic grating for directing part of the light beam reflected by the disc to the photodetector. The diffraction and holographic gratings are formed integral with each other into the grating assembly.
摘要翻译：一种用于以微小凹坑的形式光学读取存储在平面信息载体盘中的数据的光学拾取装置。拾取装置将来自光源的光束引导到盘表面。入射光束被数据坑调制并反射回到光电检测器。一种新颖的光栅组件设置在光源和信息盘之间，并且包括用于来自光源的光束的衍射光栅和全息光栅，用于将由盘反射的光束的一部分引导到光电检测器。衍射和全息光栅彼此成一体形成光栅组件。

4. 发明授权

US4998806A Image reading apparatus 失效
标题翻译：图像读取装置
公开(公告)号：US4998806A
公开(公告)日：1991-03-12
申请号：US458442
申请日：1989-12-28
申请人： Shigeki Tsuji , Yukio Kurata , Taizo Yokota
发明人： Shigeki Tsuji , Yukio Kurata , Taizo Yokota
IPC分类号： H01L31/04 , G02B3/00 , G02B5/18 , H04N1/028 , H04N1/031 , G02B3/08
CPC分类号： G02B5/1885 , G02B27/4211 , G02B27/4227 , G02B27/4272 , G02B3/0056 , H04N1/0311 , H04N1/0312 , G02B3/08 , Y02E10/52
摘要： This image reading apparatus includes a light source for illuminating an object, a lens array for focusing reflected light from the object into a predetermined position, and an image sensor for reading an image formed by the focused light. The lens array includes a transparent base and a diffraction element provided on at least an incident plane and an emission plane of the base. The lens array includes an array having a plurality of lens areas. The employment of the diffraction element renders a shorter imaging distance of light from the object and thus a reduction in the size of the apparatus.

5. 发明授权

US5465315A Display apparatus having a plurality of display devices 失效
标题翻译：具有多个显示装置的显示装置
公开(公告)号：US5465315A
公开(公告)日：1995-11-07
申请号：US986052
申请日：1992-12-02
申请人： Keiji Sakai , Yoshio Yoshida , Hiroyuki Yamamoto , Yukio Kurata , Yasuo Nakata , Takahiro Miyake
发明人： Keiji Sakai , Yoshio Yoshida , Hiroyuki Yamamoto , Yukio Kurata , Yasuo Nakata , Takahiro Miyake
IPC分类号： G02B6/06 , G02F1/1333 , G09F9/305 , G02B6/08
CPC分类号： G02F1/13336 , G02B6/06 , G09F9/305 , Y10S385/901
摘要： A display apparatus of the invention includes: a plurality of display devices arranged in one direction, each of the plurality of display devices having a display area; and a plurality of image transmission means corresponding to the respective display devices, one end face of each of the image transmission means being coupled to a display area of the corresponding one of the display devices, other end faces of the image transmission means corresponding to the adjacent ones of the display devices being in contact with each other, the plurality of image transmission means being bent toward the one direction in which the display devices are arranged. Alternatively, a display apparatus of the invention includes: a plurality of display devices disposed in two directions, each of the plurality of display devices having a display area; a plurality of image transmission means corresponding to the respective display devices, one end face of each of the image transmission means being coupled to a display area of the corresponding one of the display devices, other end faces of the image transmission means corresponding to the adjacent ones of the display devices being in contact with each other, some of the plurality of image transmission means each having inward facing slopes and outward facing slopes on two pairs of opposing faces, the outward facing slopes of the image transmission means being directed to a direction in which the corresponding display device has no adjacent display devices.
摘要翻译：本发明的显示装置包括：沿一个方向布置的多个显示装置，所述多个显示装置中的每一个具有显示区域; 以及对应于各个显示装置的多个图像传输装置，每个图像传输装置的一个端面耦合到相应的一个显示装置的显示区域，对应于图像传输装置的另一个端面相邻的显示装置彼此接触，所述多个图像传输装置朝向显示装置布置的一个方向弯曲。或者，本发明的显示装置包括：多个显示装置，其设置在两个方向上，所述多个显示装置中的每一个具有显示区域; 与各个显示装置对应的多个图像传输装置，每个图像传输装置的一个端面耦合到对应的一个显示装置的显示区域，图像传输装置的与相邻的显示装置相对应的另一个端面所述显示装置中的一个相互接触，所述多个图像传输装置中的一些图像传输装置中的每一个在两对相对的面上具有向内的斜面和向外的斜面，所述图像传输装置的向外的斜面被引导到其中相应的显示装置没有相邻的显示装置。

6. 发明授权

US5428595A Optical information recording and reproducing device 失效
标题翻译：光信息记录和再现装置
公开(公告)号：US5428595A
公开(公告)日：1995-06-27
申请号：US9911
申请日：1993-01-27
申请人： Yoshio Yoshida , Hideaki Sato , Yukio Kurata , Hiroyuki Yamamoto , Nobuo Ogata , Katsuhiro Kubo
发明人： Yoshio Yoshida , Hideaki Sato , Yukio Kurata , Hiroyuki Yamamoto , Nobuo Ogata , Katsuhiro Kubo
IPC分类号： G11B7/09 , G11B7/135 , G11B17/32
CPC分类号： G11B7/1353
摘要： An optical information recording and reproducing device is provided. The device includes a light source for emitting a light beam, a first diffraction element for splitting the light beam into at least three diffracted beams, an optical system guiding the diffracted beams to a recording medium, and a second diffraction element including at least one division line and a diffraction surface from which the diffracted beams are diffracted. The diffraction surface is divided into at least two regions by the division line or lines. One of the division lines is at a predetermined angle against the direction of a track on the recording medium, and the regions split each of the diffracted beams into at least two parts to diffract the parts in different directions. The device also includes an optical detecting element for detecting the light beams diffracted with the second diffraction element.
摘要翻译：提供了一种光信息记录和再现装置。该装置包括用于发射光束的光源，用于将光束分成至少三个衍射光束的第一衍射元件，将衍射光束引导到记录介质的光学系统，以及包括至少一个分割部分的第二衍射元件线衍射面和衍射光束衍射的衍射面。通过划分线或线将衍射面分成至少两个区域。分割线之一与记录介质上的轨道的方向成预定角度，并且区域将每个衍射光束分成至少两个部分，以在不同方向上衍射该部分。该装置还包括用于检测与第二衍射元件衍射的光束的光学检测元件。

7. 发明授权

US5410623A Optical device having two optical waveguides connected and a method of producing the same 失效
标题翻译：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。

8. 发明授权

US5283690A Optical diffraction grating element 失效
$Optical diffraction grating element$
标题翻译：光学衍射光栅元件
公开(公告)号：US5283690A
公开(公告)日：1994-02-01
申请号：US503039
申请日：1990-04-02
申请人： Takahiro Miyake , Yoshio Yoshida , Yukio Kurata
发明人： Takahiro Miyake , Yoshio Yoshida , Yukio Kurata
IPC分类号： G02B5/18 , G11B7/135 , G02B27/44
CPC分类号： G11B7/1353 , G02B5/1814 , G02B5/1857 , G02B5/1871
摘要： An optical diffraction grating element comprising diffraction gratings having a configuration in which grooves and flat lands each positioned between the adjacent grooves are successively alternately formed, wherein the diffraction gratings have the same groove depth, groove width and groove tilt angle in order to obtain a constant 0th-order diffraction efficiency and first-order diffraction efficiency in the optical diffraction grating element while the pitches of the diffraction gratings are made different by setting a different land width for each diffraction grating.
摘要翻译：一种光学衍射光栅元件，包括衍射光栅，该衍射光栅具有这样一种构造，其中相邻沟槽之间的槽和平坦的焊盘位于相邻的槽之间，其中衍射光栅具有相同的槽深度，槽宽度和槽倾斜角，以获得恒定的光衍射光栅元件的0次衍射效率和一级衍射效率，而衍射光栅的间距通过为每个衍射光栅设定不同的焊盘宽度而不同。

9. 发明授权

US5509094A Mode splitter and a magneto-optical disk pick-up device having the mode splitter 失效
标题翻译：模式分离器和具有模式分离器的磁光盘拾取装置
公开(公告)号：US5509094A
公开(公告)日：1996-04-16
申请号：US213800
申请日：1994-03-16
申请人： Kohji Minami , Kuniaki Okada , Hiroyuki Yamamoto , Yoshio Yoshida , Yukio Kurata , Keiji Sakai
发明人： Kohji Minami , Kuniaki Okada , Hiroyuki Yamamoto , Yoshio Yoshida , Yukio Kurata , Keiji Sakai
IPC分类号： G02B6/122 , G02B6/126 , G02B6/28 , G11B7/12 , G11B7/135 , G11B11/10 , G11B11/105 , G02B6/26
CPC分类号： G11B7/124 , G02B6/1228 , G02B6/126 , G11B11/10545 , G02B6/2848
摘要： A mode splitter and the magneto-optical pick-up device including the mode splitter are provided. The mode splitter includes a tapered waveguide portion whose thickness gradually becomes thin so that a light of at least one mode can be cut off. An emission position of a light wave can be varied depending on its mode. In this mode splitter, the emission position of the light wave of each mode can be adjusted by changing a thickness of the tapered waveguide, thereby improving the degree of freedom in designing the device.
摘要翻译：提供了一种模式分离器和包括模式分离器的磁光拾取装置。模式分离器包括其厚度逐渐变薄的锥形波导部分，使得可以切断至少一种模式的光。光波的发射位置可以根据其模式而变化。在该模式分离器中，通过改变锥形波导管的厚度，可以调整各模式的光波的发射位置，从而提高设计的自由度。

10. 发明授权

US5473470A Polarization detector 失效
标题翻译：极化探测器
公开(公告)号：US5473470A
公开(公告)日：1995-12-05
申请号：US093920
申请日：1993-07-21
申请人： Takahiro Miyake , Yoshio Yoshida , Yasuo Nakata , Yukio Kurata
发明人： Takahiro Miyake , Yoshio Yoshida , Yasuo Nakata , Yukio Kurata
IPC分类号： G01J4/04 , G02B5/18 , G02B5/30 , G02B27/28 , G11B11/10 , G11B11/105 , G11B7/00
CPC分类号： G01J4/04 , G02B27/283 , G02B5/1809 , G02B5/1814
摘要： A polarization detector includes a polarization diffraction element having a substrate with two facing surfaces which are placed in parallel with each other, a first diffraction grating formed on one surface of the substrate, and a second diffraction grating formed on the other surface of the substrate, with light being incident upon the first diffraction grating. Further, each grating pitch of the first diffraction grating and the second diffraction grating are nearly equal to a wavelength of the incident light. A limiting member is also included for limiting an incident region of the incident light with respect to the polarization diffraction element. The limiting member is formed on a light incident side of the first diffraction grating. Further, a converging lens is included for respectively converging light transmitted through the first diffraction grating and the second diffraction grating and light diffracted by the first diffraction grating and the second diffraction grating into different beam spots. Finally, a pair of photodetectors are included for detecting each optical intensity of the two beam spots converged by the converging lens.
摘要翻译：偏振检测器包括具有彼此平行放置的具有两个相对表面的基板的偏振衍射元件，形成在基板的一个表面上的第一衍射光栅和形成在基板的另一表面上的第二衍射光栅，光入射到第一衍射光栅上。此外，第一衍射光栅和第二衍射光栅的每个光栅间距几乎等于入射光的波长。还包括限制入射光相对于偏振衍射元件的入射区域的限制构件。限制部件形成在第一衍射光栅的光入射侧。此外，包括会聚透镜，用于分别会聚透过第一衍射光栅和第二衍射光栅的光以及由第一衍射光栅和第二衍射光栅衍射的光成为不同的光束点。最后，包括一对光检测器，用于检测由会聚透镜会聚的两束光束的每个光强度。

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