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Related Experiment Video

Updated: Jun 12, 2026

The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants

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Absolute reflectometer for the mid infrared region.

D Sheffer, U P Oppenheim, A D Devir

|June 18, 2010

Summary

A new absolute reflectometer measures light reflection across a broad wavelength range. This instrument utilizes integrating spheres and an improved data analysis method for accurate measurements of diffuse samples.

Area of Science:

Optical Physics
Materials Science

Background:

Accurate measurement of optical properties is crucial for materials characterization.
Existing reflectometry methods may have limitations in precision or spectral range.

Purpose of the Study:

To describe a novel absolute reflectometer for the 0.8-5.5-micrometer wavelength region.
To present an improved theoretical framework for data reduction in reflectometry.
To validate the instrument's performance with measurements on diffuse gold samples.

Main Methods:

Development of an absolute reflectometer based on integrating spheres.
Application of the third Taylor method in a 7 degrees /d configuration.
Implementation of an improved data reduction theory.

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Last Updated: Jun 12, 2026

The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants

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Published on: May 8, 2015

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Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer

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Main Results:

The reflectometer successfully operates in the 0.8-5.5-micrometer spectral range.
The improved theory enhances the accuracy of data reduction.
Measurements on diffuse gold samples demonstrate the instrument's capability.

Conclusions:

The developed absolute reflectometer provides accurate measurements in the specified wavelength range.
The enhanced data reduction theory improves the reliability of reflectometry results.
This instrument is suitable for characterizing the optical properties of diffuse materials.