公开(公告)号：US07507950B2

公开(公告)日：2009-03-24

申请号：US11595044

申请日：2006-11-09

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.

公开(公告)号：US07378643B2

公开(公告)日：2008-05-27

申请号：US11410679

申请日：2006-04-24

申请人： Chee Foo Lum ,  Sai Mun Lee ,  Weng Fei Wong

发明人： Chee Foo Lum ,  Sai Mun Lee ,  Weng Fei Wong

IPC分类号： G01D5/34

CPC分类号： G01D5/34715

摘要： An Optical Projecting Encoder (“OPE”) having an emitter module for transmitting emitted optical radiation through a mask to a moving object, and a detector module for receiving reflected optical radiation from the moving object. The reflected optical radiation from the moving object may include a predetermined image cast by the mask and a surface texture image from the moving object. The OPE may include a transmissive layer covering both the emitter module and the detector module, where the transmissive layer covering the emitter module collimates the optical radiation from the emitter module, and the transmissive layer covering the detector module concentrates the optical radiation reflected from the moving object to the detector module. The detector module may include an optical navigation sensor that continuously acquires and compares predetermined images cast by the mask and surface texture images from the moving object.

摘要翻译： 具有用于通过掩模将发射的光辐射传输到移动物体的发射器模块的光学投影编码器（“OPE”），以及用于接收来自移动物体的反射光辐射的检测器模块。 来自移动物体的反射光辐射可以包括由掩模投射的预定图像和来自移动物体的表面纹理图像。 OPE可以包括覆盖发射器模块和检测器模块的透射层，其中覆盖发射器模块的透射层准直来自发射器模块的光辐射，并且覆盖检测器模块的透射层集中从移动的反射的光辐射 对象到检测器模块。 检测器模块可以包括光学导航传感器，其连续地获取并比较由掩模投射的预定图像和来自移动物体的表面纹理图像。

公开(公告)号：US20080111062A1

公开(公告)日：2008-05-15

申请号：US11595046

申请日：2006-11-09

申请人： Weng Fei Wong ,  Chee Foo Lum

发明人： Weng Fei Wong ,  Chee Foo Lum

IPC分类号： G01D5/34 ,  H03K11/00

CPC分类号： G01D5/366 ,  H03K5/082

摘要： An optical encoder. The optical 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. The plurality of optically distinguishable sections includes a limit switch section. The emitter generates a light signal incident on the track of the coding element. The detector includes a limit switch photodetector positioned to detect the light signal from the emitter. The detector generates a limit switch output signal in response to the detected light signal above a limit switch threshold at the limit switch photodetector. Embodiments of this type of optical encoder implement limit switches into a single track on the coding element.

公开(公告)号：US20080100569A1

公开(公告)日：2008-05-01

申请号：US11591799

申请日：2006-11-01

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

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

IPC分类号： G09G5/00

CPC分类号： G01D5/3473

摘要： A user navigational apparatus. The user navigational apparatus includes a code wheel and an encoder. The code wheel is coupled to a dial. The code wheel includes a track of alternating reflective and non-reflective sections. The optical reflective encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the code wheel. The detector detects a reflected light signal. The reflected light signal corresponds to a portion of the incident light signal that is reflected off of the reflective sections of the track. The detector also generates a channel signal corresponding to the reflected light signal. Embodiments of this type of user navigational apparatus achieve reduced thickness compared to conventional implementations of jog wheels.

摘要翻译： 用户导航装置。 用户导航装置包括码盘和编码器。 码盘耦合到表盘。 码盘包括交替的反射和非反射部分的轨道。 光反射编码器包括发射器和检测器。 发射器产生入射在码轮的轨道上的光信号。 检测器检测反射光信号。 反射光信号对应于从轨道的反射部分反射的入射光信号的一部分。 检测器还产生对应于反射光信号的通道信号。 这种类型的用户导航装置的实施例相比于轻便轮的常规实施方式减小了厚度。