公开(公告)号：US07417218B2

公开(公告)日：2008-08-26

申请号：US11417357

申请日：2006-05-03

Applicant: Eiji Yamamoto ,  Yoshimi Kuroda ,  Jun Hane ,  Iwao Komazaki

Inventor： Eiji Yamamoto ,  Yoshimi Kuroda ,  Jun Hane ,  Iwao Komazaki

IPC: G01D5/34

CPC classification number: G01D5/38

Abstract: An optical encoder is a reflecting triple grating type optical encoder. A light projecting section of the optical encoder which includes a combination of a bare chip LED and a first grating of a first pitch p1, irradiates a predetermined light. A photodetecting section of the optical encoder which includes a combination of a photodetector and a third grating of a third pitch p3 detects a movement of a self image. Each of the first grating and the third grating is disposed substantially parallel with respect to a scale, and a substantially parallel and substantially flat light transmitting area is formed in a predetermined portion of a surface of a detecting head. A light transparent member is disposed in a space between the surface of the detecting head, and the first grating and the second grating.

Abstract translation: 光学编码器是反射三光栅型光学编码器。 包括裸芯片LED和第一间距p 1的第一光栅的组合的光学编码器的光投射部分照射预定的光。 包括光电检测器和第三间距p 3的第三光栅的组合的光学编码器的光电检测部分检测自身图像的移动。 第一光栅和第三光栅中的每一个被设置成相对于标尺基本上平行，并且在检测头的表面的预定部分中形成基本平行且基本平坦的光透射区域。 光透明构件设置在检测头的表面与第一光栅和第二光栅之间的空间中。

公开(公告)号：US20060255252A1

公开(公告)日：2006-11-16

申请号：US11417357

申请日：2006-05-03

Applicant: Eiji Yamamoto ,  Yoshimi Kuroda ,  Jun Hane ,  Iwao Komazaki

Inventor： Eiji Yamamoto ,  Yoshimi Kuroda ,  Jun Hane ,  Iwao Komazaki

IPC: G01D5/34

CPC classification number: G01D5/38

Abstract: An optical encoder is a reflecting triple grating type optical encoder. A light projecting section of the optical encoder which includes a combination of a bare chip LED and a first grating of a first pitch p1, irradiates a predetermined light. A photodetecting section of the optical encoder which includes a combination of a photodetector and a third grating of a third pitch p3 detects a movement of a self image. Each of the first grating and the third grating is disposed substantially parallel with respect to a scale, and a substantially parallel and substantially flat light transmitting area is formed in a predetermined portion of a surface of a detecting head. A light transparent member is disposed in a space between the surface of the detecting head, and the first grating and the second grating.

Abstract translation: 光学编码器是反射三光栅型光学编码器。 包括裸芯片LED和第一间距p 1的第一光栅的组合的光学编码器的光投射部分照射预定的光。 包括光电检测器和第三间距p 3的第三光栅的组合的光学编码器的光电检测部分检测自身图像的移动。 第一光栅和第三光栅中的每一个被设置成相对于标尺基本上平行，并且在检测头的表面的预定部分中形成基本平行且基本平坦的光透射区域。 光透明构件设置在检测头的表面与第一光栅和第二光栅之间的空间中。

公开(公告)号：US07649168B2

公开(公告)日：2010-01-19

申请号：US11900252

申请日：2007-09-11

Applicant: Jun Hane ,  Eiji Yamamoto ,  Yoshimi Kuroda ,  Iwao Komazaki

Inventor： Jun Hane ,  Eiji Yamamoto ,  Yoshimi Kuroda ,  Iwao Komazaki

IPC: G01D5/34

CPC classification number: G01D5/38 ,  G01D5/34746

Abstract: In a triple slit optical encoder, a first grating and a third grating are formed on separate members, and values of a first effective width W1 and a first pitch p1 of an optical pattern on the first grating, and a third effective width W3 and a third pitch p3 of an optical pattern on the third grating are set to values such that a periodic signal having the amplitude effective for detection of a relative displacement of a scale is achieved based on periodicity of the self-image, refractive indices of substances of substances and/or spaces interposed in the optical path from a bare LED up to a photodetector, and the thickness of those substances and/or spaces in a direction substantially perpendicular to a plane on which the second grating is formed.

Abstract translation: 在三重狭缝光学编码器中，第一光栅和第三光栅形成在分离的部件上，第一光栅上的光学图案的第一有效宽度W1和第一间距p1的值以及第三有效宽度W3和 将第三光栅上的光学图案的第三间距p3设定为使得具有用于检测刻度的相对位移的有效幅度的周期信号基于自身图像的周期性，物质物质的折射率来实现 和/或插入到从裸LED到光电检测器的光路中的空间，以及这些物质和/或空间在基本上垂直于其上形成有第二光栅的平面的方向上的厚度。

公开(公告)号：US07102760B2

公开(公告)日：2006-09-05

申请号：US11075443

申请日：2005-03-08

Applicant: Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

Inventor： Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

IPC: G01B9/02

CPC classification number: H03M1/301 ,  G01D5/38

Abstract: An optical displacement sensor comprises a surface emitting laser light source, a scale and a photosensor. The surface emitting laser light source emits a light beam having a predetermined shape. The scale is displaceable in such a manner as to cross the light beam emitted from the surface emitting laser light source and has a diffraction grating of a predetermined period formed thereon for forming a diffraction interference pattern from the light beam. The photosensor receives a predetermined portion of the diffraction interference pattern. The photosensor includes light intensity detecting means comprised of a plurality of light receiving areas arranged apart from one another in a pitch direction of the diffraction interference pattern on a light receiving surface at intervals of np1 (z1 +z2)/z1 where z1 is a distance between a light-beam emitting surface of the surface emitting laser light source and a surface on which the diffraction grating is formed, z2 is a distance between the surface on which the diffraction grating is formed and the light receiving surface of the photosensor, p1 is the pitch of the diffraction grating on the scale, and n is a natural number.

Abstract translation: 光学位移传感器包括表面发射激光光源，刻度尺和光电传感器。 表面发射激光光源发射具有预定形状的光束。 标尺可以以与从表面发射激光光源发射的光束交叉的方式移位，并且具有形成在其上的预定周期的衍射光栅，用于从光束形成衍射干涉图案。 光传感器接收衍射干涉图案的预定部分。 光传感器包括光强度检测装置，其包括以np 1（z 1 + z 2）/ z 1的间隔在光接收表面上以衍射干涉图案的间距方向彼此分开布置的多个光接收区域，其中， z 1是表面发射激光光源的光束发射表面与其上形成衍射光栅的表面之间的距离，z 2是其上形成衍射光栅的表面与光接收表面之间的距离 的光电传感器，p 1是刻度上的衍射光栅的间距，n是自然数。

公开(公告)号：US20050157307A1

公开(公告)日：2005-07-21

申请号：US11075443

申请日：2005-03-08

Applicant: Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

Inventor： Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

IPC: G01D5/38 ,  H03M1/30 ,  G01B11/02

CPC classification number: H03M1/301 ,  G01D5/38

Abstract: An optical displacement sensor comprises a surface emitting laser light source, a scale and a photosensor. The surface emitting laser light source emits a light beam having a predetermined shape. The scale is displaceable in such a manner as to cross the light beam emitted from the surface emitting laser light source and has a diffraction grating of a predetermined period formed thereon for forming a diffraction interference pattern from the light beam. The photosensor receives a predetermined portion of the diffraction interference pattern. The photosensor includes light intensity detecting means comprised of a plurality of light receiving areas arranged apart from one another in a pitch direction of the diffraction interference pattern on a light receiving surface at intervals of np1(z1+z2)/z1 where z1 is a distance between a light-beam emitting surface of the surface emitting laser light source and a surface on which the diffraction grating is formed, z2 is a distance between the surface on which the diffraction grating is formed and the light receiving surface of the photosensor, p1 is the pitch of the diffraction grating on the scale, and n is a natural number.

Abstract translation: 光学位移传感器包括表面发射激光光源，刻度尺和光电传感器。 表面发射激光光源发射具有预定形状的光束。 标尺可以以与从表面发射激光光源发射的光束交叉的方式移位，并且具有形成在其上的预定周期的衍射光栅，用于从光束形成衍射干涉图案。 光传感器接收衍射干涉图案的预定部分。 光传感器包括光强度检测装置，该光强度检测装置包括多个光接收区域，该多个光接收区域以np1（z1 + z2）/ z1的间隔在光接收表面上沿衍射干涉图案的间距方向彼此分开布置，其中z1是距离 在表面发射激光光源的光束发射表面和其上形成衍射光栅的表面之间，z2是其上形成衍射光栅的表面与光电传感器的光接收表面之间的距离，p1是 刻度上的衍射光栅的间距，n是自然数。

公开(公告)号：US20080251703A1

公开(公告)日：2008-10-16

申请号：US11900252

申请日：2007-09-11

Applicant: Jun Hane ,  Eiji Yamamoto ,  Yoshimi Kuroda ,  Iwao Komazaki

Inventor： Jun Hane ,  Eiji Yamamoto ,  Yoshimi Kuroda ,  Iwao Komazaki

IPC: G01D5/36

CPC classification number: G01D5/38 ,  G01D5/34746

Abstract: In a triple slit optical encoder, a first grating and a third grating are formed on separate members, and values of a first effective width W1 and a first pitch p1 of an optical pattern on the first grating, and a third effective width W3 and a third pitch p3 of an optical pattern on the third grating are set to values such that a periodic signal having the amplitude effective for detection of a relative displacement of a scale is achieved based on periodicity of the self-image, refractive indices of substances of substances and/or spaces interposed in the optical path from a bare LED up to a photodetector, and the thickness of those substances and/or spaces in a direction substantially perpendicular to a plane on which the second grating is formed.

Abstract translation: 在三重狭缝光学编码器中，第一光栅和第三光栅形成在分离的部件上，第一光栅上的光学图案的第一有效宽度W 1和第一间距p 1的值以及第三有效宽度W 3和第三光栅上的光学图案的第三间距p 3被设置为使得具有根据自身图像的周期性实现具有用于检测标尺的相对位移的幅度的周期信号的折射率 从裸露的LED直到光电检测器的光路中插入的物质和/或空间的物质，以及这些物质和/或空间在基本上垂直于形成第二光栅的平面的方向上的厚度。

公开(公告)号：US07064842B1

公开(公告)日：2006-06-20

申请号：US09480506

申请日：2000-01-10

Applicant: Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

Inventor： Eiji Yamamoto ,  Jun Hane ,  Iwao Komazaki

IPC: G01B9/02

CPC classification number: H03M1/301 ,  G01D5/38

Abstract: An optical displacement sensor comprises a surface emitting laser light source, a scale and a photosensor. The surface emitting laser light source emits a light beam having a predetermined shape. The scale is displaceable in such a manner as to cross the light beam emitted from the surface emitting laser light source and has a diffraction grating of a predetermined period formed thereon for forming a diffraction interference pattern from the light beam. The photosensor receives a predetermined portion of the diffraction interference pattern. The photosensor includes light intensity detecting means comprised of a plurality of light receiving areas arranged apart from one another in a pitch direction of the diffraction interference pattern on a light receiving surface at intervals of np1(z1+z2)/z1 where z1 is a distance between a light-beam emitting surface of the surface emitting laser light source and a surface on which the diffraction grating is formed, z2 is a distance between the surface on which the diffraction grating is formed and the light receiving surface of the photosensor, p1 is the pitch of the diffraction grating on the scale, and n is a natural number.

Abstract translation: 光学位移传感器包括表面发射激光光源，刻度尺和光电传感器。 表面发射激光光源发射具有预定形状的光束。 标尺可以以与从表面发射激光光源发射的光束交叉的方式移位，并且具有形成在其上的预定周期的衍射光栅，用于从光束形成衍射干涉图案。 光传感器接收衍射干涉图案的预定部分。 光传感器包括光强度检测装置，该光强度检测装置包括多个光接收区域，该多个光接收区域以np1（z1 + z2）/ z1的间隔在光接收表面上沿衍射干涉图案的间距方向彼此分开布置，其中z1是距离 在表面发射激光光源的光束发射表面和其上形成衍射光栅的表面之间，z2是其上形成衍射光栅的表面与光电传感器的光接收表面之间的距离，p1是 刻度上的衍射光栅的间距，n是自然数。

公开(公告)号：US07888627B2

公开(公告)日：2011-02-15

申请号：US12409792

申请日：2009-03-24

Applicant: Jun Hane ,  Iwao Komazaki

Inventor： Jun Hane ,  Iwao Komazaki

IPC: G01D5/34

CPC classification number: G01D5/38

Abstract: An optical encoder includes a scale which is installed on one member of which, displacement is detected, and a detecting head which is installed on the other member which moves relatively with respect to the one member, and is disposed facing the scale. A predetermined optical pattern in a direction of relative movement is provided, and the detecting head includes a light emitting section which irradiates a predetermined light on the scale, a light detecting section which includes a light receiving surface which receives light through the optical pattern, which is irradiated on the scale from the light emitting section, and which detects light distribution formed on the light receiving surface, a first light transmitting member which is disposed in an optical path between the light emitting section and the scale, and a second light transmitting member which is disposed in an optical path between the scale and the light detecting section. The optical encoder further includes a stray-light reduction element which is interposed between a surface of the first light transmitting member and a surface of the second light transmitting member, and which reduces stray light which does not contribute to signal detection.

Abstract translation: 光学编码器包括安装在检测到位移的一个构件上的刻度尺，以及安装在相对于一个构件相对移动的另一个构件上的检测头，并且面向刻度尺设置。 提供了在相对移动方向上的预定光学图案，并且检测头包括在标尺上照射预定光的光发射部分，光检测部分包括通过光学图案接收光的光接收表面， 从发光部照射在鳞片上，并且检测在光接收表面上形成的光分布;布置在发光部和刻度之间的光路中的第一透光部件和第二透光部件 其设置在刻度尺和光检测部分之间的光路中。 光学编码器还包括插入在第一透光构件的表面和第二透光构件的表面之间并且减少对信号检测无贡献的杂散光的杂散光减少元件。

公开(公告)号：US08330943B2

公开(公告)日：2012-12-11

申请号：US12976349

申请日：2010-12-22

Applicant: Jun Hane ,  Hiromasa Fujita ,  Eiji Yamamoto

Inventor： Jun Hane ,  Hiromasa Fujita ,  Eiji Yamamoto

IPC: G01C3/08

CPC classification number: G01S7/491 ,  G01S17/46

Abstract: A signal processing apparatus includes a phase shift unit and a signal processing unit. The phase shift unit shifts phases of at least one set of first periodic signals and second periodic signals. The first periodic signals are output from an optical signal output device connected to a displacement detection target and have amplitude gradually increasing with a displacement in a predetermined direction of the displacement detection target. The second periodic signals are output from the optical signal output device connected to the displacement detection target and have amplitude gradually decreasing with the displacement in the predetermined direction of the displacement detection target. The signal processing unit executes a predetermined operation with respect to the first and second periodic signals output from the phase shift unit to obtain a displacement of the displacement detection target.

Abstract translation: 信号处理装置包括相移单元和信号处理单元。 相移单元移位至少一组第一周期信号和第二周期信号的相位。 第一周期性信号从连接到位移检测对象的光信号输出装置输出，并且随着位移检测对象的规定方向的位移，振幅逐渐增大。 第二周期信号从连接到位移检测对象的光信号输出装置输出，并且随着位移检测对象的规定方向的位移而使振幅逐渐减小。 信号处理单元相对于从相移单元输出的第一和第二周期信号执行预定的操作，以获得位移检测目标的位移。

公开(公告)号：US20110157578A1

公开(公告)日：2011-06-30

申请号：US12976349

申请日：2010-12-22

Applicant: Jun Hane ,  Hiromasa Fujita ,  Eiji Yamamoto

Inventor： Jun Hane ,  Hiromasa Fujita ,  Eiji Yamamoto

IPC: G01C3/08

CPC classification number: G01S7/491 ,  G01S17/46

Abstract: A signal processing apparatus includes a phase shift unit and a signal processing unit. The phase shift unit shifts phases of at least one set of first periodic signals and second periodic signals. The first periodic signals are output from an optical signal output device connected to a displacement detection target and have amplitude gradually increasing with a displacement in a predetermined direction of the displacement detection target. The second periodic signals are output from the optical signal output device connected to the displacement detection target and have amplitude gradually decreasing with the displacement in the predetermined direction of the displacement detection target. The signal processing unit executes a predetermined operation with respect to the first and second periodic signals output from the phase shift unit to obtain a displacement of the displacement detection target.

Abstract translation: 信号处理装置包括相移单元和信号处理单元。 相移单元移位至少一组第一周期信号和第二周期信号的相位。 第一周期性信号从连接到位移检测对象的光信号输出装置输出，并且随着位移检测对象的规定方向的位移，振幅逐渐增大。 第二周期信号从连接到位移检测对象的光信号输出装置输出，并且随着位移检测对象的规定方向的位移而使振幅逐渐减小。 信号处理单元相对于从相移单元输出的第一和第二周期信号执行预定的操作，以获得位移检测目标的位移。