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Optical encoders

A technology of optical coding and equipment, which is applied in the direction of transmitting sensing components, converting sensor outputs, measuring devices, etc. by using optical devices

Inactive Publication Date: 2011-02-09
AVAGO TECH INT SALES PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Although optical encoders have proven to be a reliable technology, there are significant opportunities to simplify manufacturing operations, reduce the number of manufacturing steps, reduce the number of parts and reduce work space industry pressure

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Embodiment Construction

[0021] In the following detailed description, for purposes of illustration and not limitation, exemplary embodiments disclosing specific details are set forth in order to provide a thorough understanding of embodiments in accordance with the present invention. However, those skilled in the art having the benefit of this disclosure will appreciate that other embodiments according to the invention that depart from the specific details disclosed herein are still within the scope of the appended claims. Moreover, descriptions of well-known devices and methods may be omitted so as not to obscure the description of the example embodiments. Such methods and apparatus are clearly within the scope of the teachings of the present technology.

[0022] Optical encoders are generally divided into two categories: transmission-based optical encoders and reflection-based optical encoders. The following disclosure is primarily directed to reflection-based optical encoders. However, it should...

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Abstract

An optical encoding apparatus for the detection of position and / or motion of a mechanical device includes a codescale, an encoder housing having one or more portions and a light-detecting sensor embedded within the encoder housing, wherein the light-detecting sensor is capable of sensing a pattern produced by the codescale superimposed on the light-detecting sensor, and wherein the light-detecting sensor includes a two-dimensional array of light detection elements having dimensions n-by-m where n and m are both integers greater than 4.

Description

technical field [0001] The present invention relates to optical encoding devices for sensing position and / or motion. Background technique [0002] Optical encoders are used in a variety of situations to determine the position and / or motion of an object relative to some reference. Optical encoders are commonly used in mechanical systems as an inexpensive and reliable way to measure and track motion between moving parts. For example, imaging systems such as printers, scanners, photocopiers, fax machines, plotters, and other imaging systems typically use optical encoders to track the motion of an image medium such as paper when printing an image on or scanning an image from the medium. [0003] In general, an optical encoder includes some form of optical emitter / detector pair that works in conjunction with a "code wheel" or "code strip." Code wheels are generally circular and can be used to detect rotational motion, such as the motion of a paper feed drum in a printer or cop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/34G01D5/32
CPCG01D5/34715G01D2205/90
Inventor 塞弗·巴哈里·赛丹叶腾宏陈强孙成金常叶秦宏
Owner AVAGO TECH INT SALES PTE LTD