Unlock instant, AI-driven research and patent intelligence for your innovation.

Single track optical encoder

An encoder and single code channel technology, applied in the field of optical encoders, can solve problems such as increasing the photodiode current

Active Publication Date: 2010-06-30
AVAGO TECH INT SALES PTE LTD
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, additional electronic circuitry is required to increase the photodiode current

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single track optical encoder
  • Single track optical encoder
  • Single track optical encoder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In various embodiments of the present invention, single track reflective optical encoder systems, apparatus, and methods are provided.

[0015] As used herein, the term "single track encoder" means an optical encoder having a single yardstick having a pattern or bar of data or code formed or present on or in it and formed or present on An indexed pattern or strip thereon, wherein the data and index patterns move together along a common single axis in a single track arranged on a corresponding single track comprising a data channel and an index channel photodetector above.

[0016] figure 1 One embodiment of a reflective optical encoder 10 is illustrated in which a single track photodetector 48 is mounted or attached to the upper surface of the substrate (in figure 1 not shown). A light emitter (also not shown) is also mounted or attached to the upper surface and configured to emit light therefrom. The single track photodetectors 48 have a common axis 47 . according...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed are various embodiments of a reflective optical encoder having at least three channels-two data channels and one index channel-disposed along a common axis or single track. The single track configuration disclosed herein permits very high resolution reflective optical encoders in small packages to be provided. In addition, the single track configuration reduces problems with misalignment between code scales and light detectors, permits relatively simple electronic circuitry to be used to process outputs, and reduces manufacturing, assembly, integrated circuit and encoder costs. Methods of making and using such optical encoders are also disclosed.

Description

technical field [0001] Various embodiments of the invention described herein relate to the field of optical encoders, and assemblies, devices, systems and methods related thereto. Background technique [0002] Optical encoders are often used as motion detectors in applications such as closed-loop feedback control in motor control systems. For example, many optical encoders are configured to convert rotary or linear motion into a two-channel digital output for position encoding. [0003] Many optical encoders use LEDs as light sources. In a transmissive encoder, the light is collimated into a parallel beam by a mechanism such as a lens placed above the LED. Opposite the emitter is a photodetector, usually composed of a photodiode array and a signal processor. As a code scale, such as a code wheel or code tape, is moved between the light emitter and light detector, the light beam is interrupted by a pattern of bars or spaces disposed on the code scale. Similarly, in a refl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/347
CPCG01D5/34746
Inventor 赛丹·塞弗·巴哈里仲·民·托尔滕库·诺拉曼·宾·滕库·阿布德·阿兹
Owner AVAGO TECH INT SALES PTE LTD