公开(公告)号：US20050211886A1

公开(公告)日：2005-09-29

申请号：US10810173

申请日：2004-03-26

申请人： Yee Chin ,  Kee Goh ,  Chee Chong

发明人： Yee Chin ,  Kee Goh ,  Chee Chong

IPC分类号： G01D5/34 ,  G01D5/347

CPC分类号： G01D5/34792 ,  G01D5/345

摘要： A polaroid encoder system for detecting movement is disclosed. The system includes a movable polarizing code element. A detector module detects an amplitude based on how much illumination passes through one portion of the movable polarizing code element. A quadrant of the movable polarizing code element is determined based on how much illumination passes through another portion of the movable polarizing code element. The angular position of the movable polarizing code element can then be determined by using amplitude and the quadrant information.

摘要翻译： 公开了一种用于检测运动的宝丽来编码器系统。 该系统包括可移动的偏振光元件。 检测器模块基于多少照射通过可移动偏振码元件的一部分来检测振幅。 基于多少照射通过可移动偏振光元件的另一部分来确定可移动偏振光元件的象限。 然后可以通过使用振幅和象限信息来确定可移动偏振光元件的角位置。

公开(公告)号：US20050045896A1

公开(公告)日：2005-03-03

申请号：US10649094

申请日：2003-08-26

申请人： Kee Goh ,  Yee Chin ,  Boon Lee ,  Chen Tan

发明人： Kee Goh ,  Yee Chin ,  Boon Lee ,  Chen Tan

IPC分类号： H01L21/00 ,  H01L33/58 ,  H01L33/00

CPC分类号： H01L33/58

摘要： The light-emitting device includes a light source and a gradient index (GRIN) element. The GRIN element has a cylindrical refractive index profile in which the refractive index varies radially and is substantially constant axially. The GRIN element includes a first end surface opposite a second end surface and is characterized by a length-to-pitch ratio. The GRIN element is arranged with the first end surface adjacent the light source to receive light from the light source, and emits the light from the second end surface in a radiation pattern dependent on the length-to-pitch ratio. Since the radiation pattern depends on the length-to-pitch ratio of the GRIN element, LEDs with different radiation patterns can be made simply by using GRIN elements of appropriate lengths.

摘要翻译： 发光装置包括光源和梯度折射率（GRIN）元件。 GRIN元件具有圆柱形折射率分布，其中折射率径向变化并且轴向基本上恒定。 GRIN元件包括与第二端面相对的第一端面，其特征在于长度与间距比。 GRIN元件布置成具有邻近光源的第一端表面以接收来自光源的光，并且以取决于长度与间距比的辐射图案从第二端表面发射光。 由于辐射图取决于GRIN元件的长度间距比，所以可以通过使用适当长度的GRIN元件简单地制作具有不同辐射图案的LED。

公开(公告)号：US20060043271A1

公开(公告)日：2006-03-02

申请号：US10926243

申请日：2004-08-25

申请人： Yee Chin ,  Siang Foo ,  Chee Chong

发明人： Yee Chin ,  Siang Foo ,  Chee Chong

IPC分类号： G01D5/34

CPC分类号： G01D5/34707

摘要： A coding element such as a codewheel includes first and second surfaces that are configured with respect to each other and with respect to a light beam such that the light beam is reflected at the two surfaces using the optical phenomenon of total internal reflection. The coding element also includes a coding pattern that is aligned in an optical path of the light beam after the light beam has reflected off of both of the surfaces. A coding element with surfaces that reflect a light beam as a result of total internal reflection can be utilized in an encoding system that operates in transmission while the light source and the photodetector array are located on the same side of the coding element.

摘要翻译： 诸如码片的编码元件包括相对于彼此并且相对于光束配置的第一和第二表面，使得光束在两个表面处被反射，使用全内反射的光学现象。 编码元件还包括在光束已经从两个表面反射之后在光束的光路中对准的编码图案。 具有作为全内反射的结果的反射光束的表面的编码元件可以用于在光源和光电检测器阵列位于编码元件的同一侧上的传输操作的编码系统中。

公开(公告)号：US20070119933A1

公开(公告)日：2007-05-31

申请号：US11287966

申请日：2005-11-28

申请人： Yee Chin ,  Jiin Cheong

发明人： Yee Chin ,  Jiin Cheong

IPC分类号： G06K7/10

CPC分类号： G01D3/08

摘要： An optical unit includes an optical emitter receiving an optical emitter current, an optical sensor receiving an optical sensor current and light from the optical emitter and in response thereto outputting at least one signal indicating relative movement between the optical unit and an optical code scale, and an optical sensor current detector comparing the optical sensor current to a reference value. In response to the optical sensor current being different than the reference value, the optical sensor current detector outputs an optical sensor current detector signal. The optical sensor current detector signal indicates the presence of a contaminant in a light path from the optical emitter to the optical sensor, and is used to regulate the current to the optical emitter so as to counteract the negative effects of the contaminant in the light path.

摘要翻译： 光学单元包括接收光发射器电流的光发射器，接收来自光发射器的光学传感器电流和光的光学传感器，并且响应于此输出至少一个指示光学单元和光学代码量表之间的相对运动的信号，以及 将光学传感器电流与参考值进行比较的光学传感器电流检测器。 响应于光学传感器电流不同于参考值，光学传感器电流检测器输出光学传感器电流检测器信号。 光学传感器电流检测器信号指示在从光发射器到光学传感器的光路中存在污染物，并且用于调节到光发射器的电流，以便抵消光路中污染物的负面影响 。

公开(公告)号：US20070090282A1

公开(公告)日：2007-04-26

申请号：US11259419

申请日：2005-10-26

申请人： Yee Chin ,  Siang Foo ,  Weng Wong ,  Saiful Saidan ,  Cheng Tan ,  Wee Yeap

发明人： Yee Chin ,  Siang Foo ,  Weng Wong ,  Saiful Saidan ,  Cheng Tan ,  Wee Yeap

IPC分类号： G01D5/34

CPC分类号： G01D5/34715

摘要： Optical encoders having one or more of a number of disclosed features are disclosed. The features of the optical encoder in accordance with the present invention include a symmetrical (for example, circular) emitter; baffle between the emitter and a detector; double-dome or single-dome encapsulant; multiple detector; and multiple (at least three) data channels.

摘要翻译： 公开了具有多个公开特征中的一个或多个的光学编码器。 根据本发明的光学编码器的特征包括对称（例如圆形）发射器; 发射器和检测器之间的挡板; 双圆顶或单圆顶密封剂; 多检测器 和多个（至少三个）数据信道。

公开(公告)号：US20070228265A1

公开(公告)日：2007-10-04

申请号：US11394611

申请日：2006-03-31

申请人： Premkumar Ramachandran ,  Yee Chin ,  Saiful Saidan

发明人： Premkumar Ramachandran ,  Yee Chin ,  Saiful Saidan

IPC分类号： G01D5/34

CPC分类号： G01D5/34707 ,  H01L2224/48091 ,  H01L2924/1815 ,  H05K1/0274 ,  H05K1/18 ,  H05K3/301 ,  H05K2201/10121 ,  H05K2201/10537 ,  H01L2924/00014

摘要： There is disclosed optical encoder apparatus for removable connection with a printed circuit board. In an embodiment, the apparatus includes a light emitting component, a light detecting component, a mounting component for attaching the light emitting component thereon, and another mounting component for attaching the light detecting component thereon, wherein each of the mounting components have a removable connection with the printed circuit board. A method of assembling optical encoder apparatus is disclosed. In an embodiment, the method includes attaching a light emitting component and a terminal of a first mounting component to one another; attaching a light detecting component and a terminal of a second mounting component to one another; attaching a terminal of the first mounting component to a printed circuit board; and attaching a terminal of the second mounting component to the printed circuit board. Other embodiments are also disclosed.

摘要翻译： 公开了用于与印刷电路板可移除连接的光学编码器装置。 在一个实施例中，该装置包括发光部件，光检测部件，用于在其上安装发光部件的安装部件和用于在其上安装光检测部件的另一安装部件，其中每个安装部件具有可移除连接 与印刷电路板。 公开了一种组装光学编码器装置的方法。 在一个实施例中，该方法包括将第一安装部件的发光部件和端子彼此附接; 将光检测部件和第二安装部件的端子彼此附接; 将第一安装部件的端子附接到印刷电路板; 以及将所述第二安装部件的端子附接到所述印刷电路板。 还公开了其他实施例。

公开(公告)号：US20070205285A1

公开(公告)日：2007-09-06

申请号：US11370133

申请日：2006-03-06

申请人： Cheng Tan ,  Yee Chin

发明人： Cheng Tan ,  Yee Chin

IPC分类号： G06K7/10

CPC分类号： G06K7/10831

摘要： An encoder having a code strip and an emitter-detector module is disclosed. The code strip includes alternating reflective and opaque stripes. The emitter-detector module includes a housing, a lens insert, a light source and a photodetector. Light from the light source illuminates the code strip, and light reflected from the code strip is incident on the photodetector. The lens insert includes a lens that processes light generated by the light source either before the light reaches the code strip or after the light is reflected from the code strip. The lens insert mates with the housing to position the lens at a predetermined point relative to the light source or the photodetector. The housing will accept a plurality of lens inserts, each lens insert having a different lens from the others of the lens inserts.

摘要翻译： 公开了具有码带和发射极检测器模块的编码器。 代码条包括交替的反射和不透明条纹。 发射极检测器模块包括壳体，透镜插入件，光源和光电检测器。 来自光源的光照亮编码条，并且从代码条反射的光入射到光电检测器上。 透镜插入件包括在光到达代码条之前或在光从代码条反射之后处理由光源产生的光的透镜。 透镜插入件与壳体配合，以将透镜定位在相对于光源或光电检测器的预定点。 该壳体将接收多个透镜插入件，每个透镜插入件具有与透镜插入物中的其它透镜插入件不同的透镜。

公开(公告)号：US20070181790A1

公开(公告)日：2007-08-09

申请号：US11352193

申请日：2006-02-09

申请人： Yee Chin

发明人： Yee Chin

IPC分类号： G01D5/34

CPC分类号： G01D5/345

摘要： An encoder having a code scale and an emitter detector module is disclosed. The code scale includes alternating reflective and opaque stripes. The emitter-detector module includes a light source that generates light and directs a portion of the generated light to the imaging element and a photodetector that generates a signal representing an intensity of light having a linear polarization in a predetermined direction received by the photodetector, the light source and the photodetector are encapsulated in a transparent medium, wherein there is a gap between the transparent medium and the code scale. The predetermined direction is chosen to reduce the intensity of light received by the photodetector that is reflected from an interface between the transparent medium and the gap. A polarization filter can also be included in the light source to further improve the rejection of the light reflected from the interface of the transparent medium and the gap.

公开(公告)号：US20070131853A1

公开(公告)日：2007-06-14

申请号：US11301600

申请日：2005-12-13

申请人： Janet Chua ,  Yee Chin

发明人： Janet Chua ,  Yee Chin

IPC分类号： G01D5/34

CPC分类号： G01D5/3473 ,  G01D5/34715

摘要： An encoder having a code carrier, light source, and detector is disclosed. The code carrier includes a track that emits light at each of a plurality of track points on the track when that track point is illuminated with light having a predetermined spectrum. Each of the track points emits light having a spectrum that is different from the spectrum emitted by others of the track points. The light source illuminates a portion of the track with light of the predetermined illumination spectrum. The detector provides a plurality of signals indicative of the spectrum of light leaving the portion of the track when the portion includes one of the track points. The code carrier moves with respect to the detector, and the signals define the relative position of the code carrier with respect to the detector.

摘要翻译： 公开了一种具有代码载体，光源和检测器的编码器。 代码载体包括当轨道点被具有预定频谱的光照射时在轨道上的多个轨迹点的每一个处发光的轨道。 每个轨迹点发射具有不同于其他轨道点发射的频谱的光谱的光。 光源以预定的照明光谱的光照亮轨道的一部分。 当该部分包括轨迹点之一时，检测器提供指示离开轨道部分的光谱的多个信号。 代码载体相对于检测器移动，并且信号定义代码载体相对于检测器的相对位置。

公开(公告)号：US20060097051A1

公开(公告)日：2006-05-11

申请号：US10985701

申请日：2004-11-10

申请人： Siang Foo ,  Weng Wong ,  Yee Chin

发明人： Siang Foo ,  Weng Wong ,  Yee Chin

IPC分类号： G06K7/10

CPC分类号： G01D5/34715

摘要： An Enhanced Reflective Optical Encoder (“EROE”) having an emitter module for transmitting emitted optical radiation to an encoded media and a detector module for receiving reflected optical radiation from the encoded media. The EROE may include a transmissive layer covering both the emitter module and the detector module, and an optical isolation element located within the transmissive layer and located between the emitter module and the detector module. The optical isolation element reduces undesired optical radiation transmitted from the emitter module to the detector module, where the undesired optical radiation is a portion of the emitted optical radiation.

摘要翻译： 具有用于将发射的光辐射传输到编码介质的发射器模块的增强反射光学编码器（“EROE”）和用于接收来自已编码介质的反射光辐射的检测器模块。 EROE可以包括覆盖发射器模块和检测器模块的透射层，以及位于透射层内并位于发射器模块和检测器模块之间的光学隔离元件。 光隔离元件减少从发射器模块传输到检测器模块的不期望的光辐射，其中不需要的光辐射是所发射的光辐射的一部分。