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Optical encoder and method of operation

A technology of optical encoder and light, which is applied in the direction of instruments, conversion sensor output, measuring devices, etc., can solve problems such as difficulties, limited application fields, complex working surface processing, etc., and achieve the effect of maintaining accuracy and good accuracy

Active Publication Date: 2017-07-07
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, this kind of previous technology requires special treatment of the working surface, which limits the application field of this kind of technology; at the same time, in order to achieve high-precision detection results, the processing of the working surface becomes complicated, which also improves the application of this kind of technology. Difficulty

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  • Optical encoder and method of operation
  • Optical encoder and method of operation
  • Optical encoder and method of operation

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Embodiment Construction

[0033] The following description includes several embodiments of the present invention, including schematic diagrams of user operations, so as to understand how the present invention is applied in actual operating conditions. It should be noted that in the following drawings, the parts irrelevant to the technology of the present invention have been omitted. At the same time, in order to highlight the relationship between the components, the ratio between the components in the drawings is not the same as the ratio between the real components. Must be the same.

[0034] figure 1 An embodiment of the present invention is shown. The optical encoder 100 has a light emitting unit 101 , a light sensing unit 103 and a processing unit 105 . The light emitting unit 101 is used to emit light onto the sensing surface 107 , and the light sensing unit 103 can sense the light reflected from the sensing surface 107 to generate a sensing signal. The processing unit 105 can process the sensi...

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Abstract

The present invention relates to an optical encoder that can provide accurate coded reference data by identifying features without the need to provide high-density special patterns on the work surface and without providing reference objects with special markings. Coded reference data can be precisely generated by inspecting the surface features of the work surface.

Description

technical field [0001] The present invention relates to an optical encoder and its operating method, which can provide accurate coded reference data by identifying features, without providing high-density special patterns on the working surface, or reference objects with special marks, by detecting the surface The features can accurately generate coded reference data. Background technique [0002] In the known technology, as a technical means of optical coding, it is usually necessary to process the working surface into marks with a certain density or more for light reflection or penetration, or to arrange the light sources in a specific way and control their light-emitting sequence, to encode. For example, U.S. Patent No. US8598509 discloses that a plurality of light sources emit light in a specific order, accompanied by a coded working surface with pre-designed texture gaps, so that light can pass through the texture gaps in a predetermined way and be detected by light se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/347
Inventor 罗忠稳陈信嘉
Owner PIXART IMAGING INC