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Related Experiment Video

Updated: Jun 15, 2026

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

NBS reference hazemeter: its development and testing.

V R Weidner, J J Hsia

|March 10, 2010

Summary

This summary is machine-generated.

A new research hazemeter precisely measures light scattering in optical materials, achieving high accuracy for detailed studies. This advancement improves quantitative analysis of percentage haze according to ASTM standards.

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Area of Science:

Optical Physics
Materials Science
Metrology

Background:

Quantitative analysis of light scattering is crucial for optical materials.
Existing methods for measuring haze may have limitations in precision and geometric variability.

Purpose of the Study:

To develop and characterize a novel research hazemeter for accurate light scattering measurements.
To enable detailed studies of light scattering by varying geometrical conditions.

Main Methods:

Utilized a diffraction-limited off-axis parabolic mirror to minimize instrument-induced scattering.
Employed a collimated light beam source (approx. 6800 K) and a V(lambda) corrected silicon photodiode detector.
Analyzed detector nonlinearity and integrating sphere geometry for error assessment.

Main Results:

Reduced instrument light scattering to less than 0.1%.
Achieved an overall uncertainty in percentage haze measurement of +/-0.2%.
Demonstrated capability to measure light scattering below 0.5%.

Conclusions:

The developed hazemeter offers high precision and flexibility for light scattering analysis.
The instrument meets and exceeds requirements for ASTM Test Method D 1003.
This research advances the metrology of optical material properties.