公开(公告)号：US07317183B2

公开(公告)日：2008-01-08

申请号：US11408902

申请日：2006-04-21

申请人： Weng Fei Wong ,  Yee Loong Chin ,  Siang Leong Foo

发明人： Weng Fei Wong ,  Yee Loong Chin ,  Siang Leong 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：US07385178B2

公开(公告)日：2008-06-10

申请号：US11259419

申请日：2005-10-26

申请人： Yee Loong Chin ,  Siang Leong Foo ,  Weng Fei Wong ,  Saiful Bahari Bin Saidan ,  Cheng Why Tan ,  Wee Jin Yeap

发明人： Yee Loong Chin ,  Siang Leong Foo ,  Weng Fei Wong ,  Saiful Bahari Bin Saidan ,  Cheng Why Tan ,  Wee Jin 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：US07182258B2

公开(公告)日：2007-02-27

申请号：US10985701

申请日：2004-11-10

申请人： Siang Leong Foo ,  Weng Fei Wong ,  Yee Loong Chin

发明人： Siang Leong Foo ,  Weng Fei Wong ,  Yee Loong Chin

IPC分类号： G06K7/10 ,  G01D5/34

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。

公开(公告)号：US07544924B2

公开(公告)日：2009-06-09

申请号：US11356477

申请日：2006-02-17

申请人： Siang Leong Foo ,  Boon Keat Tan ,  Yee Loong Chin

发明人： Siang Leong Foo ,  Boon Keat Tan ,  Yee Loong Chin

IPC分类号： G06M7/00

CPC分类号： G06F3/0338

摘要： A directional input device with a light directing shaft that avoids wear and tear caused by physical contact between a shaft and a sensor surface. A directional input device according to the present teachings includes a light emitter and a shaft having a surface that reflects light from the light emitter. A directional input device according to the present teachings further includes a set of light sensing elements that are positioned to detect a position of the shaft by sensing light reflected from the shaft.

摘要翻译： 具有导光轴的方向输入装置，其避免由轴和传感器表面之间的物理接触引起的磨损和撕裂。 根据本教导的定向输入装置包括光发射器和具有反射来自光发射器的光的表面的轴。 根据本发明的方向输入装置还包括一组光感测元件，其被定位成通过感测从轴反射的光来检测轴的位置。

公开(公告)号：US06998601B2

公开(公告)日：2006-02-14

申请号：US10369942

申请日：2003-02-20

申请人： Yee Loong Chin ,  Siang Leong Foo

发明人： Yee Loong Chin ,  Siang Leong Foo

IPC分类号： G01D5/34

CPC分类号： G01D5/347

摘要： A dual-axis optical encoder device is disclosed. The optical encoder includes a substrate having a first surface and a second surface opposite the first surface and a first optical encoder on the first surface of a substrate and a second optical encoder on the second surface of the substrate. Each optical encoder includes an optical emitter and an optical detector. The dual-axis optical encoder device provides, within a single device, the ability to acquire movement information on two different axes.

摘要翻译： 公开了一种双轴光学编码器装置。 光学编码器包括具有第一表面和与第一表面相对的第二表面的基底和在基底的第一表面上的第一光学编码器和在基底的第二表面上的第二光学编码器。 每个光学编码器包括光发射器和光学检测器。 双轴光学编码器装置在单个装置内提供获取两个不同轴上的运动信息的能力。

公开(公告)号：US20090096855A1

公开(公告)日：2009-04-16

申请号：US11871388

申请日：2007-10-12

申请人： Siang Leong Foo ,  Yee Loong Chin

发明人： Siang Leong Foo ,  Yee Loong Chin

IPC分类号： B41J2/47 ,  G01B11/14

CPC分类号： B41J11/009

摘要： An apparatus for sensing a media type of a print medium. Embodiments of the apparatus include an emitter, a polarization filter, and a detector. The emitter is configured to emit light toward a surface of the print medium. The polarization filter is configured to filter polarized light reflected from the surface of the medium. The detector is coupled to the polarization filter and configured to detect the filtered light. The detector is also configured to generate an electrical signal representative of the detected light.

摘要翻译： 一种用于感测打印介质的介质类型的设备。 该装置的实施例包括发射器，偏振滤光器和检测器。 发射器被配置为朝向打印介质的表面发光。 偏振滤光器被配置为对从介质的表面反射的偏振光进行滤光。 检测器耦合到偏振滤光器并且被配置成检测滤光的光。 检测器还被配置为产生表示检测到的光的电信号。

公开(公告)号：US07780258B2

公开(公告)日：2010-08-24

申请号：US11871388

申请日：2007-10-12

申请人： Siang Leong Foo ,  Yee Loong Chin

发明人： Siang Leong Foo ,  Yee Loong Chin

IPC分类号： B41J29/393

CPC分类号： B41J11/009

摘要： An apparatus for sensing a media type of a print medium. Embodiments of the apparatus include an emitter, a polarization filter, and a detector. The emitter is configured to emit light toward a surface of the print medium. The polarization filter is configured to filter polarized light reflected from the surface of the medium. The detector is coupled to the polarization filter and configured to detect the filtered light. The detector is also configured to generate an electrical signal representative of the detected light.

摘要翻译： 一种用于感测打印介质的介质类型的设备。 该装置的实施例包括发射器，偏振滤光器和检测器。 发射器被配置为朝向打印介质的表面发光。 偏振滤光器被配置为对从介质的表面反射的偏振光进行滤光。 检测器耦合到偏振滤光器并且被配置成检测滤光的光。 检测器还被配置为产生表示检测到的光的电信号。

公开(公告)号：US07145127B2

公开(公告)日：2006-12-05

申请号：US10926243

申请日：2004-08-25

申请人： Yee Loong Chin ,  Siang Leong Foo ,  Chee Keong Chong

发明人： Yee Loong Chin ,  Siang Leong Foo ,  Chee Keong Chong

IPC分类号： G01D5/34 ,  H01J3/14 ,  H03M1/22

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.

公开(公告)号：US20080251701A1

公开(公告)日：2008-10-16

申请号：US12145442

申请日：2008-06-24

申请人： Weng Fei Wong ,  Chee Foo Lum ,  Siang Leong Foo

发明人： Weng Fei Wong ,  Chee Foo Lum ,  Siang Leong Foo

IPC分类号： G01D5/34

CPC分类号： G01D5/34707 ,  G01D5/34792

摘要： An optical encoder. The encoder includes a coding element, an emitter, and a detector. The coding element has a track with a track pattern. The track pattern includes a plurality of optically distinguishable sections, which include a plurality of position sections and an index section. The emitter generates a light signal incident on the track of the coding element. The detector includes a combined position and index photodetector array. The combined position and index photodetector array includes a plurality of position photodetectors and an index photodetector. Embodiments of this type of optical encoder implement position and index sections in a single track on the coding element.

摘要翻译： 光学编码器。 编码器包括编码元件，发射器和检测器。 编码元件具有轨道图案。 轨道图案包括多个光学可区分部分，其包括多个位置部分和索引部分。 发射器产生入射在编码元件的轨道上的光信号。 检测器包括组合位置和索引光电检测器阵列。 组合的位置和折射率光检测器阵列包括多个位置光电检测器和索引光电检测器。 这种类型的光学编码器的实施例在编码元件的单个轨道中实现位置和索引部分。

公开(公告)号：US20080156973A1

公开(公告)日：2008-07-03

申请号：US11618691

申请日：2006-12-29

申请人： Weng Fei Wong ,  Chee Foo Lum ,  Siang Leong Foo

发明人： Weng Fei Wong ,  Chee Foo Lum ,  Siang Leong Foo

IPC分类号： G01D5/34 ,  H01L27/00

CPC分类号： G01D5/36

摘要： An optical encoder. A reflective optical encoder includes a reflective coding element, a plurality of emitters, and a detector. The reflective coding element includes a track of alternating reflective and non-reflective sections. Each of the plurality of emitters is configured to generate corresponding light signals incident on the track of the coding element. The detector is configured to detect the corresponding light signals reflected off of the reflective sections of the track. In one embodiment, the detector includes a plurality of photosensors positioned in separate photosensor groupings, and each photosensor grouping corresponds to one of the plurality of emitters. Embodiments of the optical encoder are suitable for small form factor encoders and improve the ease encoder assembly.

摘要翻译： 光学编码器。 反射光学编码器包括反射编码元件，多个发射器和检测器。 反射编码元件包括交替的反射和非反射部分的轨道。 多个发射器中的每一个被配置为产生入射在编码元件的轨道上的对应的光信号。 检测器被配置为检测从轨道的反射部分反射的对应的光信号。 在一个实施例中，检测器包括位于分开的光电传感器分组中的多个光电传感器，并且每个光电传感器组对应于多个发射器之一。 光学编码器的实施例适用于小尺寸编码器，并且改善了编码器组装的容易性。