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31. 发明授权

US06519112B1 Liquid dynamic pressure bearing and spindle motor, hard-disk driving unit, and scanner motor using the bearing 失效
标题翻译：液体动压轴承和主轴电机，硬盘驱动单元和扫描电机使用轴承
公开(公告)号：US06519112B1
公开(公告)日：2003-02-11
申请号：US09354475
申请日：1999-07-15
申请人： Tadao Iwaki
发明人： Tadao Iwaki
IPC分类号： G11B1702
CPC分类号： G11B25/043 , G11B17/025
摘要： A liquid dynamic pressure bearing has bearing portions provided at opposite ends of a rotor shaft. The bearing portions are spaced from the rotor shaft by a gap having only one opening portion to maintain lubrication oil therein. A capillary oil sealing portion is formed at the opening portion to prevent evaporation and leakage of oil. Inside the bearing portions, journal bearings are formed at the central axis of the rotor shaft to prevent precession of the rotor shaft. A driving mechanism for driving the rotor shaft and a load are formed between the bearing portions to provide a stable spindle motor resistant to external vibration.
摘要翻译：液体动压轴承具有设置在转子轴的相对端的轴承部分。轴承部分通过仅具有一个开口部分的间隙与转子轴间隔开，以保持其中的润滑油。在开口部形成有毛细管油封部，以防止油的蒸发和泄漏。在轴承部分内，在转子轴的中心轴线形成有轴颈轴承，以防止转子轴的进动。在轴承部之间形成用于驱动转子轴和负载的驱动机构，以提供耐外部振动的稳定的主轴电动机。

32. 发明授权

US06384503B1 Motor 有权
标题翻译：发动机
公开(公告)号：US06384503B1
公开(公告)日：2002-05-07
申请号：US09552440
申请日：2000-04-18
申请人： Tadao Iwaki , Naoki Kawawada , Atsushi Ohta , Koji Nitadori
发明人： Tadao Iwaki , Naoki Kawawada , Atsushi Ohta , Koji Nitadori
IPC分类号： H02K1502
CPC分类号： H02K1/2786
摘要： A motor has an armature disposed on one of a rotor and a stator and a permanent magnet disposed on the other of the rotor and the stator. The permanent magnet has skewed magnetic poles being magnetized so that a boundary between each pair of skewed magnetic poles is generally S-shaped and opposed areas of pole surfaces of the permanent magnet and the armature gradually increase when the pole surface of the permanent magnet enters a magnetic field region of the pole surface of the armature or gradually decrease when the pole surface of the permanent magnet leaves a magnetic field region of the pole surface of the armature.
摘要翻译：电动机具有设置在转子和定子之一上的电枢和设置在转子和定子的另一个上的永磁体。永久磁铁具有被磁化的倾斜磁极，使得每对偏斜磁极之间的边界通常为S形，并且当永磁体的磁极表面进入时，永磁体和电枢的极面的相对面积逐渐增加当永磁体的磁极表面离开电枢极面的磁场区域时，电枢极面的磁场区域或者逐渐减小。

33. 发明授权

US5600485A Optical pattern recognition system method of ferroelectric liquid crystal spatial light modulator 失效
标题翻译：铁电液晶空间光调制器的光学图案识别系统方法
公开(公告)号：US5600485A
公开(公告)日：1997-02-04
申请号：US282076
申请日：1994-07-28
申请人： Tadao Iwaki , Yasuyuki Mitsuoka
发明人： Tadao Iwaki , Yasuyuki Mitsuoka
IPC分类号： G02F1/135 , G06E3/00 , G06K9/74 , G09G3/20 , G09G3/36 , G02B27/46 , G06F17/15 , G06K9/64
CPC分类号： G06K9/748 , G02F1/135 , G06E3/005 , G09G3/3651 , G09G2310/061 , G09G2310/065 , G09G3/2007 , G09G3/2011
摘要： An high-speed, high-resolution optical pattern recognition system which automatically recognizes or measures a specified pattern from two-dimensional images comprises an image display device for displaying at least one reference image including at least one target and at least one input image, a device including a laser diode having an oscillation wavelength less than 900 nm for converting the at least one reference image and the at least one input image into a coherent image, a Fourier transform lens for optically Fourier transforming the coherent image to produce a joint Fourier-transformed image, an optically addressed ferroelectric liquid crystal spatial light modulator having no light reflection layer, a device for converting the joint Fourier-transformed image into an intensity distribution image and displaying the intensity distribution image on the optically addressed spatial light modulator, and a device including a laser diode having an oscillation wavelength longer than 660 nm for reading the intensity distribution image displayed on the optically addressed spatial light modulator. The Fourier transform lens also Fourier transforms the intensity distribution image to produce a two-dimensional correlation image distribution of the reference image and the input image and a detector detects the correlation peak intensity of the reference image and the input image contained in the correlation image distribution and outputs a corresponding electrical signal.
摘要翻译：从二维图像自动识别或测量指定图案的高速，高分辨率光学图案识别系统包括用于显示包括至少一个目标和至少一个输入图像的至少一个参考图像的图像显示装置，包括具有振荡波长小于900nm的激光二极管的装置，用于将所述至少一个参考图像和所述至少一个输入图像转换成相干图像;傅里叶变换透镜，用于对所述相干图像进行光学傅里叶变换，以产生联合傅立叶 - 变形图像，不具有光反射层的光学寻址铁电液晶空间光调制器，用于将联合傅里叶变换图像转换为强度分布图像并在光学寻址空间光调制器上显示强度分布图像的装置，以及装置包括具有长于660的振荡波长的激光二极管用于读取在光学寻址的空间光调制器上显示的强度分布图像。傅立叶变换透镜还对强度分布图像进行傅里叶变换，以产生参考图像和输入图像的二维相关图像分布，并且检测器检测参考图像和包含在相关图像分布中的输入图像的相关峰值强度并输出相应的电信号。

34. 发明授权

US5577826A Reflecting type color image projecting apparatus 失效
标题翻译：反射型彩色图像投影装置
公开(公告)号：US5577826A
公开(公告)日：1996-11-26
申请号：US548456
申请日：1995-10-26
申请人： Nobuyuki Kasama , Tadao Iwaki , Yasuyuki Mitsuoka , Yukiya Funanami
发明人： Nobuyuki Kasama , Tadao Iwaki , Yasuyuki Mitsuoka , Yukiya Funanami
IPC分类号： G03B33/12 , G02B27/28 , G02F1/13 , G02F1/1335 , H04N9/31 , G03B21/28
CPC分类号： H04N9/3105 , G02B27/283
摘要： To effectively utilize a luminous flux from a light source thereby realizing a reflecting type color image projecting apparatus having a high brightness. The apparatus includes three sheets of reflecting type optical writing liquid crystal light valves, means for writing images of respective color components to the respective reflecting type optical writing liquid crystal light valves, a polarized beam splitter for splitting a light source luminous flux into polarized light illuminating luminous fluxes, means for separating only a green component of one of the polarized light illuminating luminous fluxes, means for separating the other one of the polarized light illuminating luminous fluxes into a red component and a blue component and a projecting lens. A back focus from the projecting lens to the reflecting type optical writing liquid crystal light valves can be shortened and utilization efficiency of a luminous flux from a light emitting source can more be enhanced than a conventional reflecting type color image projecting apparatus.
摘要翻译：为了有效地利用来自光源的光通量，从而实现了具有高亮度的反射型彩色图像投影装置。该装置包括三片反射型光写入型液晶光阀，用于将各种颜色分量的图像写入各反射型光写入型液晶光阀的装置，用于将光源光束分解为偏振光的偏振分束器光通量，用于仅分离偏振光照射光束中的一个的绿色分量的装置，用于将偏振光照射光束中的另一个分离为红色分量和蓝色分量的装置以及投影透镜。可以缩短从投影透镜到反射型光写入型液晶光阀的后焦距，与传统的反射型彩色图像投影装置相比，可以更加提高来自发光源的光通量的利用效率。

35. 发明授权

US5528702A Optical pattern recognition apparatus with coordinate conversion function 失效
标题翻译：具有坐标转换功能的光学图案识别装置
公开(公告)号：US5528702A
公开(公告)日：1996-06-18
申请号：US886331
申请日：1992-05-20
申请人： Yasuyuki Mitsuoka , Tadao Iwaki
发明人： Yasuyuki Mitsuoka , Tadao Iwaki
IPC分类号： G06E3/00 , G06K9/74 , G06K9/76
CPC分类号： G06K9/748 , G06E3/005
摘要： An optical pattern recognition apparatus has an optical coordinate converter unit which simultaneously and in parallel converts an entered reference image and an entered input image from an entered coordinate system to a desired coordinate system to produce a coordinate-converted reference image and a coordinate-converted input image. A joint transform correlator receives the coordinate-converted reference image and the coordinate-converted input image and generates a correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image so that a correlation between each entered reference and each entered input image is obtained to effect pattern recognition in real time. A feedback circuit normalizes the generated correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image with a maximum correlation coefficient. The feedback circuit changes a subsequently generated correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image depending on the normalized correlation coefficient so that, if the coordinate-converted reference image is obtained from a plurality of entered reference images, a particular entered reference image having the highest correlation with the entered input image is systematically obtained.
摘要翻译：光学图案识别装置具有光学坐标转换器单元，其同时且并行地将输入的参考图像和输入的输入图像从输入的坐标系转换为期望的坐标系，以产生坐标转换参考图像和坐标转换输入图片。联合变换相关器接收坐标变换参考图像和坐标转换输入图像，并且生成坐标变换参考图像与坐标转换输入图像之间的相关系数，使得每个输入的参考和每个输入的输入图像之间的相关性获得实时模式识别。反馈电路以坐标转换的参考图像和坐标转换的输入图像之间的相关系数最大化相关系数归一化。反馈电路根据归一化相关系数改变坐标变换参考图像与坐标转换输入图像之间随后产生的相关系数，使得如果从多个输入的参考图像获得坐标转换的参考图像，则系统地获得与输入的输入图像具有最高相关性的特定输入的参考图像。

36. 发明授权

US5168383A Liquid crystal device with Fabry-Perot etalon 失效
标题翻译：液晶水晶装置，具有手工制作的ETALON
公开(公告)号：US5168383A
公开(公告)日：1992-12-01
申请号：US443717
申请日：1989-11-29
申请人： Tadao Iwaki , Hiroshi Kuroda , Junko Yamanaka
发明人： Tadao Iwaki , Hiroshi Kuroda , Junko Yamanaka
IPC分类号： C09K19/46 , G02F1/1335 , G02F1/1339 , G02F1/1343 , G02F1/139 , G02F1/141 , G02F1/21
CPC分类号： G02F1/133553 , C09K19/46 , G02F1/13394 , G02F1/134336 , G02F1/216 , G02F1/13392 , G02F1/1396 , G02F1/141
摘要： The liquid crystal device has a pair of flat glass substrates, a pair of dielectric multilayer film mirror, a plurality of transparent electrodes arranged in a matrix, a plurality of minute insulating films formed on inner face of the glass substrates, and a liquid crystal layer. A pair of dielectric multilayer film mirror constitute a Fabry-Perot etalon via the liquid crystal layer and enhance a contrast ratio. The minute insulating films are formed by physical vapor deposition and attain a uniform thickness, so that a liquid crystal device having a uniform cell gap is obtained.

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