Separate determination of scattering and absorption by using the spatially resolved intensity distribution

With spatially resolved reflectance, a scattering sample is illuminated in a point-like manner and the light distribution created by the light propagation in the medium is measured. This can be done, for example, by contact-free illumination and detection with a CCD camera (picture on the right) or by measuring at different distances in contact with the sample using optical fibers. If the light is additionally illuminated at an angle to the surface normal, it is possible to obtain additional information from the lateral displacement

obtained from the lateral displacement. By nonlinear regression with the theory of radiative transfer, the optical properties, the effective scattering coefficient µs’ and the absorption coefficient µa, and a parameter, more effectively scattering coefficient µs', absorption coefficient µa and a parameter for surface roughness, can be determined. For the solution of the radiation transport equation, analytical or numerical solutions (Monte Carlo method) can be used depending on the sample geometry.



Dr. Florian Foschum

Group Leader Calibration-Free Sensors

Tel: +49 (0)731 / 1429 779
Prof. Dr. Alwin Kienle

Prof. Dr. Alwin Kienle

Director Materials Optics & Imaging

Tel: +49 (0)731 / 1429 224

Ihr Kontakt zu uns

Wir sind jederzeit gerne für Sie da.

Ganz egal, ob Sie uns lieber online, telefonisch oder persönlich erreichen möchten – wir helfen Ihnen immer gerne weiter.

I have read the privacy policy and agree that the data I have provided may be collected and stored electronically. My data will only be used strictly for the purpose of processing and answering my request. By submitting the contact form, I agree to the processing of my data.

Privacy policy settings

Cookie settings
This website uses cookies that enable services offered by external providers, such as YouTube or Google Maps. The legal basis here is Art. 6 GDPR (1) a.

You can object to the anonymized recording of your user behavior by MATOMO here. For this purpose, we store a cookie on your computer in order to respect this decision on subsequent visits.

Please note that, depending on your settings, some functions may not be available.

You can find more information in our privacy policy

Matomo settings

Please note: When you object to tracking, a Matomo deactivation cookie is set that remembers your objection.