公开(公告)号：US5015094A

公开(公告)日：1991-05-14

申请号：US413647

申请日：1989-09-28

申请人： Koichi Oka ,  Akira Kawaguchi ,  Kunio Kumagai ,  Katsuhiro Morisawa

发明人： Koichi Oka ,  Akira Kawaguchi ,  Kunio Kumagai ,  Katsuhiro Morisawa

IPC分类号： G01N15/02 ,  G06T7/60

CPC分类号： G06T7/60 ,  G01N15/0205 ,  G01N2015/0222

摘要： There is disclosed a system in which, according to the time domain method, a laser light is irradiated to an object to be measured, photon pulses based on the scattering light from the object to be measured are received, time series data are generated based on the light receiving signal, and based on the time series data thus generated, the particle size distribution of particles in the object to be measured is measured. Thus, the present invention achieves a considerable reduction in time required for finally obtaining the particle size based on the measured data, as compared with a conventional system using a calculator program.

摘要翻译： 公开了一种系统，其中根据时域方法将激光照射到待测物体上，接收基于来自待测物体的散射光的光子脉冲，基于 光接收信号，并且基于如此生成的时间序列数据，测量被测量物体中的粒子的粒度分布。 因此，与使用计算器程序的常规系统相比，本发明实现了基于测量数据最终获得粒度所需的时间的显着减少。

公开(公告)号：US5157454A

公开(公告)日：1992-10-20

申请号：US618430

申请日：1990-11-27

申请人： Koichi Oka ,  Akira Kawaguchi ,  Kunio Kumagai ,  Yasuhiro Kubo

发明人： Koichi Oka ,  Akira Kawaguchi ,  Kunio Kumagai ,  Yasuhiro Kubo

IPC分类号： G01N21/41

CPC分类号： G01N21/4133

摘要： A differential refractometer in which: light from a light source is condensed on a lens; the light thus condensed is guided to a cell which houses a sample of which refractive index is to be measured and a reference of which refractive index is used as a reference value, the sample and the reference being housed as separated from each other in the cell; the light having passed through the cell is guided to an image sensor; and the amount of light deflection due to the difference in refractive index between the sample and the reference is measured, thereby to obtain the refractive index of the sample. The differential refractometer comprises: a light permeable member disposed at such a position that the light permeable member and the image sensor are optically conjugate with respect to the lens, the light permeable member carrying an image having at least two identification portions; and a spatial filter disposed between the light permeable member and the image sensor and adapted to spatially filter light portions which have passed through the two identification portions, the spatial filter causing at least one of the light portions thus spatially filtered to pass through the cell. The refractive index of the sample may be obtained based on the distance between the positions of images, on the detecting surface of the image sensor, of the two identification portions of the light permeable member. Such an arrangement may improve the measuring precision and reduce the number of component elements.

摘要翻译： 一种差示折射计，其中来自光源的光在透镜上会聚; 将如此冷凝的光引导到容纳需要测量折射率的样品的单元和使用折射率的基准作为参考值，将样品和参考物在细胞中彼此分离地容纳 ; 已经通过电池的光被引导到图像传感器; 并且测量由于样品和参考物之间的折射率差引起的光偏转量，从而获得样品的折射率。 所述差示折光计包括：透光部件，其设置在所述透光部件和所述图像传感器相对于所述透镜光学共轭的位置处，所述透光部件承载具有至少两个识别部分的图像; 以及空间滤光器，其布置在所述透光构件和所述图像传感器之间，并且适于空间地过滤已经穿过所述两个识别部分的光部分，所述空间滤光器使得所述空间滤光器中的至少一个光部分经过所述单元。 可以基于图像传感器的检测表面上的可透光构件的两个识别部分之间的图像的位置之间的距离来获得样本的折射率。 这样的结构可以提高测量精度并减少元件数量。

公开(公告)号：US06636308B1

公开(公告)日：2003-10-21

申请号：US09554687

申请日：2000-05-18

申请人： Kazunori Tsutsui ,  Koichi Oka ,  Masayoshi Funato ,  Akira Kawaguchi ,  Tetsuo Hamada ,  Michio Tsujio

发明人： Kazunori Tsutsui ,  Koichi Oka ,  Masayoshi Funato ,  Akira Kawaguchi ,  Tetsuo Hamada ,  Michio Tsujio

IPC分类号： G01N2149

CPC分类号： G01N21/474 ,  G01N15/02

摘要： The present invention relates to a light scattering intensity measuring apparatus capable of measuring, as a function of the scattering angle, the intensity of the light scattered from a sample. This apparatus comprises an ellipsoidal mirror 24 for reflecting and condensing the scattered light from a sample 23; an image-forming lens 25 disposed at the condensing point of light reflected by the ellipsoidal mirror 24 for forming, on a camera face, the image formed on the surface of the reflection mirror 24; and a camera 26 for recording the image formed by the image-forming lens 25. The scattered light in a wide angle range can be detected in a very short period of time (FIG. 1).

摘要翻译： 光散射强度测量装置技术领域本发明涉及一种光散射强度测量装置，其能够测量从样品散射的光的散射角的函数。 该装置包括用于反射和冷凝来自样品23的散射光的椭圆面镜24; 设置在由椭圆面镜24反射的光的聚光点处的图像形成透镜25，用于在照相机面上形成形成在反射镜24的表面上的图像; 以及用于记录由图像形成透镜25形成的图像的照相机26.可以在非常短的时间段内检测广角范围内的散射光（图1）。

公开(公告)号：US08388392B2

公开(公告)日：2013-03-05

申请号：US12947273

申请日：2010-11-16

申请人： Yoshihiro Harada ,  Koichi Oka

发明人： Yoshihiro Harada ,  Koichi Oka

IPC分类号： B63H20/08 ,  B63H25/10

CPC分类号： B63H25/22 ,  B63H25/20

摘要： A steering device for an outboard engine includes: a helm mechanism operable, in response to operation of a steering wheel, to steer the outboard engine and including a drive shaft parallel to an output shaft of the operation member; an electric assist mechanism for detecting steering torque, applied to the steering wheel, to assist operation of the helm mechanism on the basis of the detected steering torque; and a power transmission section for connecting the output shaft of the steering wheel and the helm mechanism to transmit rotation of the output shaft to the helm mechanism.

摘要翻译： 用于舷外发动机的转向装置包括：舵机构，其可响应于方向盘的操作而操作以转向舷外发动机并且包括平行于操作构件的输出轴的驱动轴; 用于检测施加到方向盘的转向扭矩的电动辅助机构，用于根据检测到的转向扭矩来辅助舵机构的操作; 以及用于连接方向盘的输出轴和舵机构的动力传递部，以将输出轴的旋转传递到舵机构。

公开(公告)号：US07394483B2

公开(公告)日：2008-07-01

申请号：US11128300

申请日：2005-05-13

申请人： Koichi Oka

发明人： Koichi Oka

IPC分类号： H04N17/00 ,  H04N17/02

CPC分类号： H04N17/04 ,  G09G3/006 ,  G09G5/00

摘要： A measurement pattern is moved on a display, and an image of the measurement pattern is captured by making a visual field of an image sensor follow the scroll of the measurement pattern. On the basis of the captured image, a motion picture response curve is obtained. Then, the motion picture response curve is transformed into an MTF (modulation transfer function). A normalized spatial frequency value N_Sf(a %) at which an MTF value starts declining by a predetermined percentage from a highest luminance portion of the MTF is determined. Then, the motion image quality of the display is evaluated on the basis of the normalized spatial frequency value N_Sf(a %). Thus, the evaluation of the motion image quality of the display can be achieved on the basis of an intuitively understandable motion image quality evaluation index.

摘要翻译： 测量图案在显示器上移动，并且通过使图像传感器的视野跟随测量图案的滚动来捕获测量图案的图像。 基于拍摄图像，获得运动图像响应曲线。 然后，将运动图像响应曲线变换为MTF（调制传递函数）。 确定MTF值开始从MTF的最高亮度部分下降预定百分比的归一化空间频率值N_Sf（a％）。 然后，基于归一化空间频率值N_Sf（a％）来评估显示器的运动图像质量。 因此，可以基于直观可理解的运动图像质量评价指标来实现对显示器的运动图像质量的评估。

公开(公告)号：US20070024627A1

公开(公告)日：2007-02-01

申请号：US10558933

申请日：2004-06-02

申请人： Koichi Oka ,  Yoshi Enami

发明人： Koichi Oka ,  Yoshi Enami

IPC分类号： G06T15/70

CPC分类号： G09G3/006 ,  G09G5/34

摘要： A test pattern is moved on a screen 5 subject to measurement with the field of view of an image sensor pursuing the motion of the test pattern so as to observe BEW. Subsequently, the field of view 33 of the image sensor is moved at the same velocity vc as in the foregoing observation to capture an image of a static pattern PE, and a blur width W along the scrolling direction that appears in a distribution profile of the captured image is observed. Based upon the blur width W and the exposure time of the image sensor for capturing the image of the static pattern PE, the moving velocity of the test pattern at the time of observation of the BEW is estimated, and by using the moving velocity, the BEW is normalized. Evaluation of the moving image quality of the screen is carried out by using the normalized N BEW. The moving velocity of the original test pattern can thus be estimated easily and accurately, and accordingly, the moving image quality of the screen can be evaluated accurately.

摘要翻译： 测试图案在屏幕5上进行测量，并且利用追求测试图案运动的图像传感器的视场来观察BEW。 随后，以与上述观察相同的速度vc移动图像传感器的视野33，以捕获静态图案PE的图像，以及沿着滚动方向的模糊宽度W，该模糊宽度W出现在 观察到捕获的图像。 基于用于拍摄静态图案PE的图像的图像传感器的模糊宽度W和曝光时间，估计在观察BEW时测试图案的移动速度，并且通过使用移动速度， BEW被归一化。 通过使用归一化N BEW来进行屏幕的运动图像质量的评估。 因此，可以容易且准确地估计原始测试图案的移动速度，因此可以准确地评估屏幕的运动图像质量。

公开(公告)号：US20060279633A1

公开(公告)日：2006-12-14

申请号：US11436759

申请日：2006-05-19

申请人： Koichi Oka

发明人： Koichi Oka

IPC分类号： H04N17/00

CPC分类号： G06T7/001 ,  G06T2207/10016 ,  G06T2207/30108 ,  H04N17/04

摘要： A test image is scrolled on a screen of a display device subject to evaluation. A plurality of sample images that are created using the same test image and each indicate different motion picture display performance index values are prepared. The plurality of the sample images are displayed as still images in a condition that permits comparison with the scrolling test image. Then, a sample image that most resembles the pursuit captured test image is specified, and a motion picture display performance index value of the specified sample image is determined to be a motion picture display performance index value of the test image.

摘要翻译： 测试图像在被评估的显示设备的屏幕上滚动。 准备使用相同测试图像创建并且各自表示不同的动态图像显示性能指标值的多个样本图像。 在允许与滚动测试图像进​​行比较的条件下，多个样本图像被显示为静止图像。 然后，指定最类似于追踪拍摄的测试图像的样本图像，并且将指定的样本图像的运动图像显示性能指标值确定为测试图像的运动图像显示性能指标值。

公开(公告)号：US4689073A

公开(公告)日：1987-08-25

申请号：US834420

申请日：1986-02-28

申请人： Tatsuo Nate ,  Koichi Oka ,  Takehiko Sato

发明人： Tatsuo Nate ,  Koichi Oka ,  Takehiko Sato

IPC分类号： H01F1/055 ,  H01F1/06 ,  H01F1/33

CPC分类号： H01F1/06 ,  H01F1/0553

摘要： A rare earth-element/cobalt type magnetic powder which possesses outstanding magnetic properties and which is useful for making a resin magnet is produced by a method which comprises thermally reducing a mixture consisting of oxide of samarium, oxide of praseodymium, optionally oxide of neodymium, and cobalt powder, thereby causing diffusion of consequently produced samarium, praseodymium, and/or neodymium in the cobalt powder, subjecting the resultant reaction product to a heat-treatment involving standing at 600.degree. to 900.degree. C. for 30 minutes to 5 hours and subsequent quenching from this temperature at a rate of not less than 10.degree. C./minute, adding the product of the heat-treatment to water, thereby converting the product into a slurry, treating the slurry with water and an aqueous acid solution, and comminuting the resulting powder into particles of an average diameter of 3 to 10 .mu.m thereby obtaining a magnetic powder having a composition represented by Sm.sub.1-x Pr.sub.x Co.sub.z or Sm.sub.1-x Pr.sub.x-y Nd.sub.y Co.sub.z (wherein x, y, and z satisfy the relations 0.05.ltoreq.x.ltoreq.0.40, 0.01.ltoreq.y.ltoreq.0.39, 0.01.ltoreq.x-y.ltoreq.0.39 and 4.7.ltoreq.z.ltoreq.5.3).

摘要翻译： 具有突出的磁特性并且可用于制备树脂磁体的稀土元素/钴型磁性粉末是通过以下方法制造的：包括热还原由钐氧化物，镨氧化物，任选的钕氧化物组成的混合物， 钴钴粉末，由此引起钴粉末中所产生的钐，镨和/或钕的扩散，使得到的反应产物进行热处理，包括在600-900℃静置30分钟至5小时， 随后从该温度以不低于10℃/分钟的速度淬火，将热处理产物加入水中，从而将产物转化为浆液，用水和酸水溶液处理浆料，以及 将所得粉末粉碎成平均粒径为3〜10μm的颗粒，得到具有由Sm1-xPrxCoz或Sm1-xPrx表示的成分的磁性粉末 -yNdyCoz（其中x，y和z满足0.05≤x≤0.40,0.01≤y≤0.39,0.01≤x≤0.39和4.7≤x≤0.33， = 5.3）。

公开(公告)号：US08393925B2

公开(公告)日：2013-03-12

申请号：US12947166

申请日：2010-11-16

申请人： Yoshihiro Harada ,  Yoshihiro Takahashi ,  Koichi Oka

发明人： Yoshihiro Harada ,  Yoshihiro Takahashi ,  Koichi Oka

IPC分类号： B63H20/08

CPC分类号： B63H20/12 ,  B63H21/265 ,  B63H25/02 ,  B63H2025/022

摘要： In a steering device for an outboard engine, a drive shaft of a helm mechanism and an output shaft of an electric assist mechanism are disposed orthogonally to a steering output shaft of a steering operation member. Where the steering operation member is a tiller handle, a torque sensor, provided between an outboard engine body and the tiller handle, detects, as steering torque, a difference between steering angles of the engine body and the tiller handle, and the helm mechanism, drivable by the assist mechanism, operates to compensate for the difference between the steering angles. The assist mechanism and the helm mechanism are provided on the body of the boat.

摘要翻译： 在用于舷外发动机的转向装置中，舵机构的驱动轴和电动辅助机构的输出轴与转向操作构件的转向输出轴正交地设置。 在转向操作构件是耕耘机手柄的情况下，设置在舷外发动机主体和耕耘机手柄之间的扭矩传感器作为转向扭矩检测发动机主体和耕耘机手柄的转向角与舵机构之间的差异， 通过辅助机构驱动，用于补偿转向角之间的差异。 辅助机构和舵机构设在船体上。

公开(公告)号：US07176464B2

公开(公告)日：2007-02-13

申请号：US11181777

申请日：2005-07-15

申请人： Koichi Oka ,  Satoshi Nitta

发明人： Koichi Oka ,  Satoshi Nitta

IPC分类号： G01J5/02

CPC分类号： G01N21/3504

摘要： Impurity is removed from gas, the resultant gas is introduced into a cell 15, and the intensity of light transmitted through the cell 15 is measured as a reference. Gas containing impurity of which concentration is known, is introduced into the cell 15, and the intensity of light transmitted through the cell 15 is measured with the temperature and pressure maintained at those used at the measurement of the reference light intensity. Then, the absorbance of the impurity is obtained according to the ratio of the two light intensity data obtained by the two measurements above-mentioned. The impurity absorbance thus obtained is stored, in a memory 20a, as a function of an impurity concentration. Gas containing impurity of which concentration is unknown, is introduced into the cell 15, and the intensity of light transmitted through the cell 15 is measured with the temperature and pressure maintained at those used at the measurements above-mentioned. The absorbance of the impurity is obtained according to the last-measured light intensity and the reference light intensity. The absorbance thus obtained is applied to the function, thereby to obtain the impurity concentration.

摘要翻译： 将杂质从气体中除去，将所得气体引入电池15，并测量透过电池15的光的强度作为参考。 将含有浓度的杂质的气体引入电池15，并且在温度和压力保持在测量参考光强度时使用的那些下测量透过电池15的光的强度。 然后，根据通过上述两个测量获得的两个光强度数据的比率，获得杂质的吸光度。 由此获得的杂质吸收作为杂质浓度的函数存储在存储器20b中。 将含有浓度未知杂质的气体引入电池15，并且测量透过电池15的光的强度，其温度和压力保持在上述测量时使用的温度和压力。 根据最后测量的光强度和参考光强度获得杂质的吸光度。 对该功能施加如此获得的吸光度，从而获得杂质浓度。