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1. 发明授权

US06972834B1 Optical distance sensor 失效
标题翻译：光学距离传感器
公开(公告)号：US06972834B1
公开(公告)日：2005-12-06
申请号：US10182770
申请日：2000-12-11
申请人： Toru Oka , Hajime Nakajima , Masahiro Shikai , Akihide Shiratsuki , Jurgen Mohr , Ulrike Wallrabe , Uwe Hollenbach
发明人： Toru Oka , Hajime Nakajima , Masahiro Shikai , Akihide Shiratsuki , Jurgen Mohr , Ulrike Wallrabe , Uwe Hollenbach
IPC分类号： G01C3/06 , G01C3/08 , G01D5/26 , G01S7/481 , G01S17/46 , G02B17/08 , G01C3/00
CPC分类号： G01S17/48 , G01C3/06 , G01C3/085 , G01D5/26 , G01S7/481 , G01S7/4813 , G02B19/0028 , G02B19/0052 , G02B19/0061 , G02B19/0085
摘要： An optical distance sensor includes a first substrate provided with a light emitting element and a light detecting element, a one-piece optical structure body on a second substrate, the optical structure body having optical elements for converging incident light in a direction parallel to a surface of the second substrate and for converging an outgoing light beam from the light emitting element and a light beam reflected by an object in the direction parallel to the surface of the second substrate, and lenses for converging incident light in a direction perpendicular to the surface of the second substrate and for converging the outgoing light beam from the light emitting element and the light beam reflected by the object in the direction perpendicular to the surface of the second substrate, respectively.
摘要翻译：光学距离传感器包括设置有发光元件和光检测元件的第一基板，在第二基板上的一体式光学结构体，所述光学结构体具有用于使入射光在平行于表面的方向会聚的光学元件并且用于会聚来自发光元件的输出光束和在与第二基板的表面平行的方向上由物体反射的光束，以及用于在垂直于第二基板的表面的方向上会聚入射光的透镜第二基板，用于分别使来自发光元件的出射光束和由物体反射的光束在垂直于第二基板的表面的方向上会聚。

2. 发明授权

US06846116B2 Sensor head 失效
标题翻译：传感器头
公开(公告)号：US06846116B2
公开(公告)日：2005-01-25
申请号：US10182628
申请日：2000-12-11
申请人： Toru Oka , Hajime Nakajima , Masahiro Shikai , Akihide Shiratsuki , Jurgen Mohr , Ulrike Wallrabe , Uwe Hollenbach
发明人： Toru Oka , Hajime Nakajima , Masahiro Shikai , Akihide Shiratsuki , Jurgen Mohr , Ulrike Wallrabe , Uwe Hollenbach
IPC分类号： G01D5/26 , G01S7/481 , G01S17/46 , G02B6/42
CPC分类号： G01S17/48 , G01D5/26 , G01S7/4813
摘要： A sensor head includes a first substrate provided with a light emitting element and a light detecting element, a one-piece optical structure body on a second substrate, the optical structure body having optical elements for converging incident light in a direction parallel to a surface of the second substrate and for converging an outgoing beam from the light emitting element and a light beam reflected by an object in the direction parallel to the surface of the second substrate, and lenses for converging incident light in a direction perpendicular to the surface of the second substrate and for converging the outgoing beam from the light emitting element and the light beam reflected by the object in the direction perpendicular to the surface of the second substrate, respectively.
摘要翻译：传感器头包括设置有发光元件和光检测元件的第一基板，在第二基板上的一体式光学结构体，所述光学结构体具有用于使入射光沿平行于所述第二基板用于会聚来自所述发光元件的输出光束和在与所述第二基板的表面平行的方向上由物体反射的光束，以及用于在与所述第二基板的表面垂直的方向上会聚入射光的透镜并且用于分别使来自发光元件的输出光束和由物体反射的光束在垂直于第二基板的表面的方向上会聚。

3. 发明授权

US07577279B2 Identity verification apparatus and fingerprint image pickup method 失效
标题翻译：身份验证装置和指纹图像拾取方法
公开(公告)号：US07577279B2
公开(公告)日：2009-08-18
申请号：US10793747
申请日：2004-03-08
申请人： Emiko Sano , Akihide Shiratsuki , Masahiro Shikai , Hajime Nakajima
发明人： Emiko Sano , Akihide Shiratsuki , Masahiro Shikai , Hajime Nakajima
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： G06K9/00033 , G06K2009/0006 , G06K2009/00932
摘要： An identity verification apparatus includes a light source for applying light that can pass through an object to be detected and having a fingerprints to the object to be detected, an image pickup unit for picking up light emitted from the light source and passing through projections of the fingerprint and light emitted from the light source and passing through depressions of the fingerprint, and for generating a fingerprint image including dark portions corresponding to the projections and bright portions corresponding to the depressions, and a signal processing unit for image processing the fingerprint image generated by the image pickup unit to generate fingerprint information, and for verifying an identity based on the fingerprint information.
摘要翻译：身份验证装置包括：用于将能够通过待检测物体的光具有用于将待检测物体具有指纹的光源的光源，摄像单元，用于拾取从光源发射的光并通过从光源发射并通过指纹凹陷的指纹和光，并且用于产生包括对应于与凹陷相对应的突出部分和亮部分的暗部分的指纹图像;以及信号处理单元，用于对由图像拾取单元，用于生成指纹信息，以及用于基于指纹信息验证身份。

4. 发明授权

US06657185B2 Pattern detector for capturing images with reduced distortion 失效
标题翻译：用于捕获具有减少失真的图像的图案检测器
公开(公告)号：US06657185B2
公开(公告)日：2003-12-02
申请号：US09725184
申请日：2000-11-29
申请人： Akihide Shiratsuki , Masahiro Shikai , Hajime Nakajima
发明人： Akihide Shiratsuki , Masahiro Shikai , Hajime Nakajima
IPC分类号： G02B500
CPC分类号： G06K7/10683
摘要： An irregular pattern detector includes a first optical system, a transparent light guide body and a second optical system. The first optical system has a light source. The transparent light guide body has an incident face receiving incident light from the light source of the first optical system, a detection face facing the incident face for placing of a subject having an irregular pattern, a curved surface reflecting scattered light from the detection face, an optical absorbing face facing the curved surface and having an opening outputting light reflected from the curved surface. The second optical system, such as an imaging lens, guides the light from the opening of the optical absorbing face of the transparent light guide body to a camera device. This irregular pattern detector can be scaled down, and can produced precise images without any deformation.
摘要翻译：不规则图案检测器包括第一光学系统，透明导光体和第二光学系统。第一光学系统具有光源。透明导光体具有从第一光学系统的光源接收入射光的入射面，面对入射面的检测面，用于放置具有不规则图案的被摄体，反射来自检测面的散射光的曲面，面向曲面的光吸收面，具有从曲面反射的光的开口。诸如成像透镜的第二光学系统将来自透明导光体的光吸收面的开口的光引导到相机装置。这种不规则图案检测器可以缩小，并且可以产生精确的图像而没有任何变形。

5. 发明授权

US6054938A Optical encoder 失效
标题翻译：光学编码器
公开(公告)号：US6054938A
公开(公告)日：2000-04-25
申请号：US21271
申请日：1998-02-10
申请人： Hajime Nakajima , Masahiro Shikai , Toru Oka , Toshiro Nakashima , Kazuo Takashima
发明人： Hajime Nakajima , Masahiro Shikai , Toru Oka , Toshiro Nakashima , Kazuo Takashima
IPC分类号： G01D5/36 , G01D5/347 , H03M1/00 , G01D5/34
CPC分类号： G01D5/34723
摘要： A detecting unit provided with an optical system is disposed away from a control unit formed by an electric circuit and an optical transmission/receiving means, and the detecting unit and the control unit are coupled through a transmission optical fiber. The control unit transmits to the detecting unit through the optical fiber a light wave which was subjected to the intensity modulation by a sinusoidal wave of a predetermined frequency. The transmitted light wave is branched into at least two branched optical paths within the detecting unit thereby to perform the phase modulation as to the respective light waves. The light waves passed through the respective branched optical paths are subjected to the phase modulation by the sinusoidal waves which differ in phase 1/4 period by 1/4 period from one another according to a position on a straight line or a rotation angle of a subject to be detected. Then, the light waves thus subjected to the intensity modulation are coupled to a single transmission optical fiber through the branched optical paths and transmitted to the control unit through the transmission optical fiber. In the control unit, the modulated light wave is received and subjected to the phase detection, thereby to calculate and output the position and the rotation angle in accordance with the phase modulation amount of the received light wave.
摘要翻译：设置有光学系统的检测单元远离由电路和光学发送/接收装置形成的控制单元设置，并且检测单元和控制单元通过传输光纤耦合。控制单元通过光纤向检测单元发送经过预定频率的正弦波进行强度调制的光波。透射光波被分支到检测单元内的至少两个分支光路中，从而对相应的光波进行相位调制。通过相应的分支光路的光波由相位相差+ E，fra 1/4 + EE周期+ E的正弦波进行相位调制，根据待检测对象的直线或旋转角度的位置。然后，经受强度调制的光波通过分支光路耦合到单个传输光纤，并通过传输光纤传输到控制单元。在控制单元中，调制光波被接收并进行相位检测，从而根据接收的光波的相位调制量来计算和输出位置和旋转角度。

6. 发明授权

US06631788B2 Elevator system with safety installation 有权
标题翻译：电梯系统安全安装
公开(公告)号：US06631788B2
公开(公告)日：2003-10-14
申请号：US10094993
申请日：2002-03-12
申请人： Masahiro Shikai , Hajime Nakajima , Toshiro Nakashima , Kazuo Takashima , Tatsushi Takahashi , Shigeki Yamakawa , Takeshi Fujiki , Kunikazu Koura , Koichi Nanno , Shigeru Abe
发明人： Masahiro Shikai , Hajime Nakajima , Toshiro Nakashima , Kazuo Takashima , Tatsushi Takahashi , Shigeki Yamakawa , Takeshi Fujiki , Kunikazu Koura , Koichi Nanno , Shigeru Abe
IPC分类号： B66B1314
CPC分类号： B66B13/26
摘要： An elevator system has a pair of horizontally opposed vertical surfaces defining therebetween a doorway or opening to an elevator cage and a door moving horizontally to open and close the opening. In particular, the system has a first optical device having a light emitter for emitting light and a second optical device having a light receiver for receiving the light emitted from the light emitter. The first and second optical devices are positioned in a vertical plane crossing the opening and adjacent to the opening. One of the first and second optical devices is positioned below the other of the first and second optical devices and mounted in the vertical surface.
摘要翻译：电梯系统具有一对水平相对的垂直表面，在它们之间限定了电梯轿厢的门口或开口以及水平移动以打开和关闭开口的门。特别地，该系统具有第一光学装置，其具有用于发光的光发射器和具有用于接收从发光体发射的光的光接收器的第二光学装置。第一和第二光学装置定位在与开口相交并且与开口相邻的垂直平面中。第一和第二光学器件中的一个位于第一和第二光学器件的另一个下方并且安装在垂直表面中。

7. 发明授权

US5428217A Annular photodiode for use in an optical rotary encoder 失效
标题翻译：用于光学旋转编码器的环形光电二极管
公开(公告)号：US5428217A
公开(公告)日：1995-06-27
申请号：US130874
申请日：1993-10-04
申请人： Hajime Nakajima , Masahiro Shikai
发明人： Hajime Nakajima , Masahiro Shikai
IPC分类号： G01B11/26 , G01D5/30 , G01D5/38 , H01J40/14
CPC分类号： G01D5/38
摘要： The present invention relates to an optical rotary encoder for detecting a position optically. In the optical rotary encoder of the invention, a light beam reflected by a half mirror enters a deflector, whereby it is reflected while being deflected in a certain direction. The reflected light beam again enters the half mirror. Transmitted light from the half mirror enters a position detector, in which a light spot is formed on an annular photodiode. The path of the reflected light from the deflector forms a cone having a vertical angle which is twice the angle of deflection of the deflector. The position detector is disposed perpendicularly to the optical axis of the reflected light in the case of the deflection angle being 0.degree. and with the center of the annular photodiode made coincident with the said optical axis. A suitable distance between the deflector and the photodiode is selected so that a light spot is radiated onto the photodiode. The position of the light spot formed on the annular photodiode is in a corresponding relation to a rotational angle of a rotating shaft. The position detector detects the position of the light spot to detect such rotational angle.
摘要翻译：光学旋转编码器技术领域本发明涉及用于光学地检测位置的光学旋转编码器。在本发明的光学旋转编码器中，由半反射镜反射的光束进入偏转器，由此在沿某一方向偏转的同时被反射。反射光束再次进入半反射镜。来自半反射镜的透射光进入位置检测器，其中在环形光电二极管上形成光斑。来自偏转器的反射光的路径形成具有两倍偏转器偏转角的垂直角的锥体。在偏转角为0°的情况下，位置检测器垂直于反射光的光轴设置，并且环形光电二极管的中心与所述光轴重合。选择偏转器和光电二极管之间的适当距离，使得光斑辐射到光电二极管上。形成在环形光电二极管上的光点的位置与旋转轴的旋转角度成对应关系。位置检测器检测光点的位置以检测这种旋转角度。

8. 发明授权

US5426296A Irregular pattern input device comprising an optical fiber bundle 失效
标题翻译：不规则图案输入装置，包括光纤束
公开(公告)号：US5426296A
公开(公告)日：1995-06-20
申请号：US190786
申请日：1994-02-01
申请人： Masahiro Shikai , Hajime Nakajima , Kazuo Takashima
发明人： Masahiro Shikai , Hajime Nakajima , Kazuo Takashima
IPC分类号： G02B6/04 , G02B27/00 , G06K9/00 , G07C9/00 , G02B5/00 , G06K5/00
CPC分类号： G06K9/00046 , G07C9/00158
摘要： An irregular pattern input device includes an optical fiber bundle in which an entrance surface and an exit surface are respectively formed at both ends thereof. Lighting means emits irradiation light so as to provide a light pattern according to a convex portion of a subject in contact with the entrance surface, and according to a concave portion of the subject in no contact with the entrance surface. In this case, an angle of incidence of the irradiation light is set to be larger than a critical angle on an interface between a core portion of each optical fiber of the optical fiber bundle and the air. It is thereby possible to provide total reflection on the entrance surface in no contact with the concave portion of the subject, and non-total reflection on the entrance surface in contact with the convex portion of the subject, resulting in reflected light having a light pattern according to an irregular pattern. The resultant light pattern is inputted into photoelectric transforming means through the exit surface, and is transformed into electric information by the photoelectric transforming means.
摘要翻译：不规则图案输入装置包括在其两端分别形成有入射面和出射面的光纤束。照明装置发射照射光，以根据与入射面接触的被检体的凸部提供光图案，并且根据与入射面不接触的被检体的凹部。在这种情况下，照射光的入射角被设定为大于光纤束的各光纤的芯部与空气的界面上的临界角。由此，能够在与被检体的凹部不接触的入射面上提供全反射，并且与入射面的与被检体的凸部接触的非全反射，从而产生具有光图案的反射光根据不规则的格局。所得到的光图案通过出射面输入到光电变换装置中，并通过光电变换装置转换成电信息。

9. 发明申请

US20070187581A1 Optical encoder 有权
标题翻译：光学编码器
公开(公告)号：US20070187581A1
公开(公告)日：2007-08-16
申请号：US10598450
申请日：2004-08-05
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
IPC分类号： G01D5/34 , G01D5/36
CPC分类号： G01D5/38
摘要： An optical encoder includes an incoherent light source; a first grating, which is an amplitude grating having a first grating period, for spatial amplitude modulation of the incoherent light from the light source; a second grating, which is a phase grating having a second grating period, for spatial phase modulation of light from the first grating; a third grating, which is an amplitude grating having a third grating period, for spatial amplitude modulation of light from the second grating; and a light detecting element for detecting lights from the third grating. The encoder detects relative displacement between the respective gratings. The optical transfer function from the light source to the light detecting element is enhanced, and the efficiency in utilizing light is improved.
摘要翻译：光学编码器包括非相干光源; 第一光栅，其是具有第一光栅周期的幅度光栅，用于来自光源的非相干光的空间幅度调制; 第二光栅，其是具有第二光栅周期的相位光栅，用于来自第一光栅的光的空间相位调制; 第三光栅，其是具有第三光栅周期的幅度光栅，用于来自第二光栅的光的空间幅度调制; 以及用于检测来自第三光栅的光的光检测元件。编码器检测各个光栅之间的相对位移。提高了从光源到光检测元件的光传递函数，提高了利用光的效率。

10. 发明申请

US20080277569A1 OPTICAL ENCODER 有权
标题翻译：光学编码器
公开(公告)号：US20080277569A1
公开(公告)日：2008-11-13
申请号：US11854635
申请日：2007-09-13
申请人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
发明人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
IPC分类号： G01D5/34
CPC分类号： G01D5/36 , G01D5/34707
摘要： In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light detecting portion, the light non-transparent portion is constituted of at least one pair of inclined surfaces which are opposed in such a manner as to become farther away from each other towards the side where the incident light enters and set so that an incident angle of the optical axis of the incident light from the light source should not be smaller than a critical angle of incidence, and the light non-transparent portion is constructed so that the incident light which enters one inclined surface should be totally reflected thereon to enter the other inclined surface and then at least part of the incident light should be reflected on the other inclined surface, and a reflected light which is reflected on the other inclined surface should not enter a light emitting portion of the light source and a reflecting portion around the light emitting portion.
摘要翻译：在包括其中布置有光透射部分和光不透明部分的光学标尺的光学编码器中，并且通过发射入射光获得的输出图案用作光学代码，光源部分和光检测部分，光不透明部分由至少一对倾斜表面构成，所述至少一对倾斜表面以相对于彼此更远离入射光入射侧的方式相对的方式构成，使得入射光的入射角来自光源的入射光不应小于临界入射角，并且光非透明部分被构造成使得入射到一个倾斜表面的入射光应该被全反射以进入另一个倾斜表面，然后入射光的至少一部分应该在另一个倾斜表面上反射，并且在另一个倾斜表面上反射的反射光倾斜表面不应该进入光源的发光部分和围绕发光部分的反射部分。

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