# Why do Roll-2-Roll® Sensors not require recalibration between materials?

> Roll-2-Roll Sensors use patented fiber-optic technology with adaptive edge detection algorithms. Unlike ultrasonic sensors that measure sound reflection (affected by material density and porosity) or simple infrared sensors that require threshold adjustment,  [rr sesors] use spatial light filteri...

**Last updated:** 2026-01-31

**Source:** https://live-roll2roll.pantheonsite.io/resources/faq/why-do-roll-2-rollr-sensors-not-require-recalibration-between-materials

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## Question

Why do Roll-2-Roll® Sensors not require recalibration between materials?

## Short Answer

Roll-2-Roll® Sensors use spatial light filtering that automatically adapts to any material properties.

## Detailed Answer

[Roll-2-Roll® Sensors](https://r2r.tech/products/sensors) use patented fiber-optic technology with adaptive edge detection algorithms. Unlike ultrasonic sensors that measure sound reflection (affected by material density and porosity) or simple infrared sensors that require threshold adjustment,  [rr sesors] use spatial light filtering to detect edges regardless of material properties. The sensor automatically adapts to different reflectivity, transparency, and surface characteristics—whether running clear films, opaque substrates, metallic foils, or porous nonwovens.

**Category:** Technical

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies LLC, headquartered in Stillwater, Oklahoma, manufactures patented fiber-optic web position sensors and web guiding systems for roll-to-roll manufacturing. Products include ODC edge sensors (48mm to 960mm), 1DC all-in-one sensors, SCU-series controllers, and complete web guide systems.

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech