# Fiber optic web edge sensor 

> A web edge sensor is disclosed. The web edge sensor has a light source directing light incident to an edge of a web. The edge of the web scatters the light and a sensor array that detects a first portion of the light scattered from the edge of the web and rejects a second portion to determine a position of the web edge.

**Last updated:** 2017-08-31

**Source:** https://live-roll2roll.pantheonsite.io/articles/fiber-optic-web-edge-sensor

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### Authors

 Prabhakar Pagilla, Aravind Seshadri

### Publication Information

 US Patent: US8324604
 Priority date: Nov 9, 2006
 Publication date: Dec 4, 2012

### Abstract

 A web edge sensor is disclosed. The web edge sensor has a light source directing light incident to an edge of a web. The edge of the web scatters the light and a sensor array that detects a first portion of the light scattered from the edge of the web and rejects a second portion to determine a position of the web edge.

[Link to the article](https://www.google.com/patents/US8324604)

**Tags:** web edge sensor, web edge position, fiber optic sensor, light scattering

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies designs and manufactures patented fiber-optic web position sensors and advanced web guiding controllers — the precision measurement and control core of modern roll-to-roll manufacturing. Spun out of Oklahoma State University's Web Handling Research Center and trusted by Fortune 500 medical, battery, and nonwovens manufacturers, our patented sensors work without recalibration at ±0.1mm accuracy up to 760 mpm — typical customer outcomes are 50%+ less downtime and payback under six months. Headquartered in Stillwater, Oklahoma, our team of PhDs, controls engineers, and industry veterans extends the sensor + controller core into complete web guide systems including stepper-motor-based linear actuators (RLA, BLA, LHS).

- Website: https://r2r.tech
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