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Related Experiment Video

Updated: Jun 15, 2026

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

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Technique for absolute definition of spherical surface errors: its use in interferogram analysis.

J S Harris, H H Hopkins

|March 10, 2010

Summary

This summary is machine-generated.

This study introduces a new method for measuring absolute surface errors on spherical surfaces. The technique simplifies analysis by avoiding the need to calculate the best-fitting sphere, improving interferometric evaluations.

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Area of Science:

Optical engineering
Metrology

Background:

Accurate characterization of spherical surfaces is crucial in optics manufacturing.
Existing methods for absolute surface error measurement can be complex and computationally intensive.

Purpose of the Study:

To present a novel technique for determining absolute surface errors of spherical optics.
To offer a method that bypasses the requirement of finding the best-fitting sphere.

Main Methods:

The described technique utilizes interferometric data.
It provides a direct approach to calculating surface errors without iterative fitting processes.

Main Results:

The method successfully defines absolute surface errors for spherical surfaces.
It offers a computationally efficient alternative for interferometric surface evaluation.

Conclusions:

The developed technique is a valuable tool for the precise metrology of spherical surfaces.
It simplifies the process of evaluating absolute surface errors in optical testing.