Transmission/Reflection

Transmission/Reflection
 
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Why Avantes for your Transmission/Reflection application?

  • Multi-channel capability for UV through NIR measurements (200-2500nm).
  • Many accessories for versatile setups (i.e. probes, stages, holders, etc).
  • Replaceable slit option for customers that can’t decide between throughput and resolution

Reflectance spectroscopy is used to characterise objects and materials. Comparing the reflected light to the light used for illumination, colors can be determined or for instance the watercontent in the object under investigation.
Depending on the reflectance application a wide variety of lightsources, accessories, fiber-probes and spectrometers can be chosen offering a tailor-made solution for the specific application.
When light hits a surface of a material it will either be reflected, absorbed or transmitted through the material (or a combination of the above). The reflectance of this light will depend on the structure and the material properties of the object. 

Thanks to the reflectance of light we are able to see color and objects.

Reflection

 

 

 

 

 

 

 

When the measurement object is more transparent (for instance filters, glass or fluids) the amount of reflected light is fairly low and one can better switch to a transmission measurement.

Using transmission spectroscopy you can measure the light passing through the object  in comparison to the emitted light.
Mostly a parallel lightbeam is used (created with collimating lenses) for these measurements. 

The setup of a transmission measurement resembles an absorbtion measurement. But with the absorbtion measurement the outcome is presented in a logarithmic way.
Avantes' multichannel capabilities make it possible to make reflection and transmission measurements in the range of 200-2500nm.

Reflection

 

 

 

 

 

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