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Relative flatness measurement of uncoated optical flats
Applied Optics
|February 16, 2010
Summary
This study introduces a scanning interferometry method for precisely measuring the relative flatness of uncoated optical flats, achieving accuracy to lambda/1000. The technique is readily adaptable for automated measurements.
Area of Science:
- Optical Engineering
- Metrology
- Surface Science
Background:
- Precision optical components require stringent flatness control.
- Existing metrology methods may have limitations in accuracy or automation for specific applications.
Purpose of the Study:
- To present a novel method for measuring the relative flatness of uncoated precision optical flats.
- To achieve measurement precision of lambda/1000.
Main Methods:
- Utilizes scanning interferometry.
- Employs a non-contact optical measurement technique.
Main Results:
- Demonstrates a method capable of measuring relative flatness to lambda/1000.
- The scanning interferometry approach provides high-resolution surface topography data.
Conclusions:
- The described method offers a viable solution for high-precision flatness assessment of optical flats.
- The technique's suitability for automation is highlighted, suggesting potential for efficient quality control.
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