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41. 发明授权

US06229140B1 Displacement information detection apparatus 失效
标题翻译：位移信息检测装置
公开(公告)号：US06229140B1
公开(公告)日：2001-05-08
申请号：US08736595
申请日：1996-10-24
申请人： Koh Ishizuka
发明人： Koh Ishizuka
IPC分类号： H01J314
CPC分类号： G01D5/38 , G01D5/2457 , G01D5/36
摘要： A displacement information detection apparatus includes a light generation unit, a first unit including a first grating for displacement information detection and one or more lens members for original detection, and a second unit including a second grating for displacement detection, which cooperates with the first grating, and an origin detection mark. The apparatus also includes at least one first light-receiving element for receiving light generated by the light generation unit and propagated via the first and second gratings, and outputting a signal including relative displacement information between the first and second units. The apparatus also includes one or more second light-receiving elements for receiving light generated by the light generation unit and propagated via the lens member. The second light-receiving elements output a signal indicating an origin based on a change in light-receiving state when the origin detection mark is present in the optical path of light leaving the lens member.
摘要翻译：位移信息检测装置包括光生成单元，包括用于位移信息检测的第一光栅和用于原始检测的一个或多个透镜构件的第一单元，以及包括用于位移检测的第二光栅的第二单元，其与第一光栅，和原点检测标记。该装置还包括至少一个第一光接收元件，用于接收由光产生单元产生并经由第一和第二光栅传播的光，并输出包括第一和第二单元之间的相对位移信息的信号。该装置还包括一个或多个第二光接收元件，用于接收由光产生单元产生的光并经由透镜构件传播。当原点检测标记存在于离开透镜构件的光的光路中时，第二光接收元件基于光接收状态的变化输出指示原点的信号。

42. 发明授权

US5498870A Rotation information detection apparatus 失效
标题翻译：旋转信息检测装置
公开(公告)号：US5498870A
公开(公告)日：1996-03-12
申请号：US380934
申请日：1995-01-31
申请人： Koh Ishizuka
发明人： Koh Ishizuka
IPC分类号： G01B11/26 , G01D5/38 , H01J3/14 , G01D5/34
CPC分类号： G01D5/38
摘要： An apparatus for detecting information as for the rotation of a scale having a diffraction grating arranged thereon along a direction of detection of the rotation is constituted by a light source portion for irradiating a light beam onto a first point on the diffraction grating of said scale wherein said light source portion emitting two diffracted lights having a predetermined order from the first point by the irradiation of the light beam, a transparent substrate to be parallelly arranged in the vicinity of the surface of said scale and having a plurality of optical elements arranged thereon, said plurality of optical elements directing the two diffracted lights of the predetermined order to a second point other than said first point on the diffraction grating of said scale and a photo-detector for detecting an interference light beam of the diffracted lights generated out of said second point on which the two diffracted lights of the predetermined order are incident whereby the information on the rotation of said scale relative to the photo-detector is detected by the photo-detection by said photo-detector.
摘要翻译：用于检测关于沿着旋转检测方向布置在其上的具有衍射光栅的刻度旋转的信息的装置由用于将光束照射到所述刻度的衍射光栅上的第一点上的光源部分构成，所述光源部分通过光束的照射从第一点发射具有预定顺序的两个衍射光;平面布置在所述刻度表面附近并且具有布置在其上的多个光学元件的透明基板，所述多个光学元件将预定顺序的两个衍射光引导到除了所述刻度的衍射光栅上的所述第一点之外的第二点，以及光检测器，用于检测由所述第二个光束产生的衍射光的干涉光束指定预定顺序的两个衍射光入射的点，由此信息通过所述光检测器的光检测来检测所述标尺相对于光检测器的旋转的位置。

43. 发明授权

US06617572B2 Displacement information detection apparatus 失效
标题翻译：使用辐射光栅的位移检测装置
公开(公告)号：US06617572B2
公开(公告)日：2003-09-09
申请号：US09839234
申请日：2001-04-23
申请人： Koh Ishizuka
发明人： Koh Ishizuka
IPC分类号： H01J314
CPC分类号： G01D5/38 , G01D5/2457 , G01D5/36
摘要： A displacement information detection apparatus includes a light generation unit, a first unit including a first grating for displacement information detection and one or more lens members for original detection, and a second unit including a second grating for displacement detection, which cooperates with the first grating, and an origin detection mark. The apparatus also includes at least one first light-receiving element for receiving light generated by the light generation unit and propagated via the first and second gratings, and outputting a signal including relative displacement information between the first and second units. The apparatus also includes one or more second light-receiving elements for receiving light generated by the light generation unit and propagated via the lens member. The second light-receiving elements output a signal indicating an origin based on a change in light-receiving state when the origin detection mark is present in the optical path of light leaving the lens member.
摘要翻译：位移信息检测装置包括光生成单元，包括用于位移信息检测的第一光栅和用于原始检测的一个或多个透镜构件的第一单元，以及包括用于位移检测的第二光栅的第二单元，其与第一光栅，和原点检测标记。该装置还包括至少一个第一光接收元件，用于接收由光产生单元产生并经由第一和第二光栅传播的光，并输出包括第一和第二单元之间的相对位移信息的信号。该装置还包括一个或多个第二光接收元件，用于接收由光产生单元产生的光并经由透镜构件传播。当原点检测标记存在于离开透镜构件的光的光路中时，第二光接收元件基于光接收状态的变化输出指示原点的信号。

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