What Are Gloss Sensors?
This Is What Happens When Light Hits a Surface
Reflection
Reflection describes the process of light rays hitting a surface, which then bounces them back in the same direction. This often occurs with glossy materials such as metal or water. The degree of reflection depends on the gloss of the surface.
During total reflection, light is fully reflected from the surface under certain conditions without penetrating into the medium below. The angle of incidence of the light beam plays a key role here.
During total reflection, light is fully reflected from the surface under certain conditions without penetrating into the medium below. The angle of incidence of the light beam plays a key role here.
Examples of Reflection
Remisión (reflexión difusa)
La remisión describe la dispersión de los rayos de luz en todas las direcciones cuando inciden sobre superficies no reflectantes. Esto ocurre sobre todo en superficies mates, romas o irregulares, como madera, papel o goma.
Ejemplos de remisión
How Gloss Sensor Work
Gloss sensors detect the degree of gloss of a surface, i.e. the proportion of light reflected by it. The mode of operation is based on the reflection and remission of light, in particular on the polarization of the light. The two photodiodes in the receiver evaluate the light conditions and thus determine the degree of gloss.
How Do Gloss Sensors Distinguish Between Glossy and Matt Surfaces?
Glossy Surfaces:
- Glossy surfaces reflect light directly in a specific direction.
- The polarization direction of the light is retained.
Matt Surfaces:
- Matt surfaces diffuse the light, which means that it is scattered in many different directions.
- No polarization direction identifiable.
What Materials Can Gloss Sensors Detect?
Paints
Coatings
Adhesive Tapes
Seal and Hologram Stickers
Installation Instructions for Installing Gloss Sensors
To achieve the most stable gloss detection possible, the following instruction must be observed when adjusting the sensor:
During installation, make sure that the alignment is perpendicular to the object and not sloped. Only then can the reflection be correctly detected by the receiver. An inclined position causes the reflection to be directed away from the receiver.
Tip: Mount the sensor perpendicular to the object
Tip: Mount the sensor perpendicular to the object
What Is the Difference Between Gloss and Contrast Sensors?
