公开(公告)号：US20050116153A1

公开(公告)日：2005-06-02

申请号：US10725696

申请日：2003-12-01

申请人： Toshiya Hataguchi ,  Yee Chin ,  Kok Fo ,  Srinivasan Lakshmanan ,  Lai Chua

发明人： Toshiya Hataguchi ,  Yee Chin ,  Kok Fo ,  Srinivasan Lakshmanan ,  Lai Chua

IPC分类号： G01D5/36 ,  G01D5/347 ,  G01D5/34

CPC分类号： G01D5/3473 ,  G01D5/34707

摘要： An encoder for measuring the position of a rotating shaft is disclosed. The encoder includes a drum having an encoding track thereon and a detector module having a light source and a photodetector. The drum includes a cylindrical surface characterized by an axis, the drum having a surface with a normal perpendicular to the axis. The encoding track includes a plurality of alternating reflective and non-reflective stripes arranged on the cylindrical surface. The first light source illuminates the stripes at an opaque angle relative to the normal. The first photodetector is positioned to receive light from the light source that is reflected from the reflective stripes when the drum moves relative to the photodetector. In one embodiment, the drum rotates about the axis when the shaft rotates. The encoding track can be either on the inside or outside of the drum.

摘要翻译： 公开了一种用于测量旋转轴的位置的编码器。 编码器包括其上具有编码轨道的滚筒和具有光源和光电检测器的检测器模块。 滚筒包括由轴线表征的圆柱形表面，滚筒具有垂直于轴线的法线。 编码轨道包括布置在圆柱形表面上的多个交替反射和非反射条纹。 第一光源相对于法线以不透明的角度照亮条纹。 第一光电检测器定位成当滚筒相对于光电检测器移动时接收来自反射条纹的光源的光。 在一个实施例中，当轴旋转时，滚筒绕轴线旋转。 编码轨道可以在鼓的内部或外部。

公开(公告)号：US20070246645A1

公开(公告)日：2007-10-25

申请号：US11408902

申请日：2006-04-21

申请人： Weng Wong ,  Yee Chin ,  Siang Foo

发明人： Weng Wong ,  Yee Chin ,  Siang Foo

IPC分类号： G01D5/34

CPC分类号： G01D5/34707

摘要： An optical encoder includes an emitter, a first lens, a detector, a second lens, and a protrusion. The emitter emits light which is directed by the first lens to a code scale for reflection. The reflected light is directed by the second lens to the detector. The detector detects the reflected light from the code scale. The protrusion is between the first lens and the second lens. The protrusion defines at least one surface that refracts stray light from the emitter away from the detector. Accordingly, the stray light does not reach the detector; thus the detector can operate more effectively.

摘要翻译： 光学编码器包括发射器，第一透镜，检测器，第二透镜和突起。 发射器将由第一透镜引导的光发射到用于反射的代码标尺。 反射光被第二透镜引导到检测器。 检测器检测来自代码标尺的反射光。 该突起位于第一透镜和第二透镜之间。 所述突起限定至少一个表面，其将来自发射器的杂散光折射离开检测器。 因此，杂散光未到达检测器; 因此检测器可以更有效地操作。

公开(公告)号：US20070241943A1

公开(公告)日：2007-10-18

申请号：US11404110

申请日：2006-04-14

申请人： Teong Tan ,  Premkumar Ramachandr ,  Yee Chin ,  Cheng Tan ,  Weng Wong

发明人： Teong Tan ,  Premkumar Ramachandr ,  Yee Chin ,  Cheng Tan ,  Weng Wong

IPC分类号： H03M7/00

CPC分类号： G01D5/34715

摘要： A reflection-based optical encoding apparatus for the detection of position and/or motion of a mechanical device includes an encoding medium having at least a first reflective portion, and an encoder housing having a light-emitting source and a light-detecting sensor embedded within, the encoder housing being placed in proximity to the encoding medium such that a functional light path can be established from the light-emitting source to the light-detecting sensor via the first reflective portion of the encoding medium. The encoder housing includes a first flat facet positioned between the light-emitting source and the encoding medium, the first flat facet having a first angle relative to a common geometric plane such that light passing from the light-emitting source to the encoding medium is refracted along a first angled path in a manner that the refracted light strikes a desired location of the encoding medium.

摘要翻译： 用于检测机械装置的位置和/或运动的基于反射的光编码装置包括具有至少第一反射部分的编码介质和具有嵌入在其中的发光源和光检测传感器的编码器壳体 编码器壳体被放置在编码介质附近，使得可以通过编码介质的第一反射部分从发光源到光检测传感器建立功能光路。 编码器壳体包括位于发光源和编码介质之间的第一平面，第一平面相对于共同的几何平面具有第一角度，使得从发光源通向编码介质的光被折射 沿着第一有角度的路径以折射光照射到编码介质的期望位置的方式。

公开(公告)号：US20070241271A1

公开(公告)日：2007-10-18

申请号：US11404111

申请日：2006-04-14

申请人： Yee Chin ,  Kean Ng ,  Weng Wong

发明人： Yee Chin ,  Kean Ng ,  Weng Wong

IPC分类号： G01D5/34

CPC分类号： G01D5/34746

摘要： A reflection-based optical encoding apparatus for the detection of position and/or motion of a mechanical device is described. In various embodiments, such a reflection-based optical encoding apparatus can include an encoder housing having one or more portions, a light-emitting source embedded within the encoder housing, and a light-detecting sensor embedded within the encoder housing, wherein the encoder housing includes one or more optical elements configured to enable light generated by the light-emitting source to reflect on a moveable object placed in close proximity of the encoder housing and subsequently be received by the light-detecting sensor to enable the reflection-based optical encoding apparatus to sense at least one of position and motion of the moveable object, and wherein the reflection-based optical encoding apparatus includes no codescale within the light path of the light-emitting source and the light-detecting sensor.

摘要翻译： 描述了用于检测机械装置的位置和/或运动的基于反射的光学编码装置。 在各种实施例中，这种基于反射的光编码设备可以包括具有一个或多个部分的编码器外壳，嵌入在编码器外壳内的发光源和嵌入在编码器外壳内的光检测传感器，其中编码器外壳 包括一个或多个光学元件，其被配置为使得由所述发光源产生的光能够反射在靠近所述编码器外壳放置的可移动物体上，并且随后被所述光检测传感器接收，以使得能够基于反射的光编码设备 以感测可移动物体的位置和运动中的至少一个，并且其中基于反射的光编码装置在发光源和光检测传感器的光路内不包括码。

公开(公告)号：US20070187582A1

公开(公告)日：2007-08-16

申请号：US11356563

申请日：2006-02-16

申请人： Yee Chin ,  Kean Ng

发明人： Yee Chin ,  Kean Ng

IPC分类号： G01D5/34

CPC分类号： G01D5/24438 ,  G01D5/347 ,  G01D5/34792

摘要： An encoder having a code scale, an illumination system, and a plurality of photodetectors is disclosed. The code scale has a plurality of tracks that are illuminated by the illumination system. Each photodetector receives light from a corresponding one of the tracks and generates a signal indicative of a quantity of light received from that track. Each photodetector is limited to detecting light in a band of wavelengths corresponding to that track. Each track generates light in a band of wavelengths corresponding to that track, and the band of wavelengths corresponding to one of the tracks is different from the band of wavelengths corresponding to the tracks that are next to that track. The tracks can include alternating reflective and absorptive stripes, alternating transmissive and reflective stripes, or alternating luminescent and absorptive stripes.

摘要翻译： 公开了一种具有代码量表，照明系统和多个光电检测器的编码器。 代码标度具有由照明系统照亮的多个轨迹。 每个光电检测器从相应的一个轨道接收光，并产生指示从该轨道接收的光量的信号。 每个光电检测器被限制为检测对应于该轨道的波长带中的光。 每个轨道产生与该轨道相对应的波长带中的光，并且与一个轨道对应的波长带不同于与该轨道相邻的轨道对应的波长带。 轨道可以包括交替的反射和吸收条纹，交替的透射和反射条纹，或交替的发光和吸收条纹。

公开(公告)号：US20060092047A1

公开(公告)日：2006-05-04

申请号：US10979280

申请日：2004-11-01

申请人： Kean Ng ,  Hock Tan ,  Moon Low ,  Yee Chin

发明人： Kean Ng ,  Hock Tan ,  Moon Low ,  Yee Chin

IPC分类号： H03M7/00

CPC分类号： G01D5/34715

摘要： A Low-Cost Absolute Linear Optical Encoder (“LALOE”) for determining the absolute position of a read-head within the LALOE relative to a codestrip is disclosed. The LALOE may include an emitter module within the read-head, the emitter module having a plurality of light sources arranged in an light source pattern and a 90° Out-Of-Phase light source; and a detector module within the read-head, the detector module having a plurality of photo-detectors arranged in a photo-detector pattern corresponding to the light source pattern and a 90° Out-Of-Phase photo-detector corresponding to the 90° Out-Of-Phase light source.

摘要翻译： 公开了一种用于确定LALOE内的读取头相对于码头的绝对位置的低成本绝对线性光学编码器（“LALOE”）。 LALOE可以在读取头内包括发射器模块，发射器模块具有以光源图案和90°异相光源布置的多个光源; 以及在读取头内的检测器模块，检测器模块具有多个光电检测器，其以对应于光源图案的光检测器图案布置，并且90°异相光检测器对应于90° 异相光源。

公开(公告)号：US20050087681A1

公开(公告)日：2005-04-28

申请号：US10696247

申请日：2003-10-28

申请人： Yee Chin ,  Kok Fo

发明人： Yee Chin ,  Kok Fo

IPC分类号： G01B11/00 ,  G01D5/26 ,  G01D5/347 ,  H01L31/12 ,  G01D5/34

CPC分类号： G01D5/34715

摘要： Reflective image encoder. A reflective image encoder has an emitter such as one or more light emitting diodes, a diffuse reflective coder such as a code wheel or code strip reflecting a portion of the light from the emitter, an imaging lens forming an inverted image on to a detector. The reflective image encoder may include apertures on either or both sides of the imaging lens, and may include baffles to minimize stray light reaching the detector.

摘要翻译： 反光图像编码器。 反射图像编码器具有诸如一个或多个发光二极管的发射器，反射来自发射器的光的一部分的代码轮或代码带的漫反射编码器，形成反转图像的成像透镜到检测器。 反射图像编码器可以包括成像透镜的一侧或两侧的孔，并且可以包括挡板以最小化到达检测器的杂散光。