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Calculation model of the concave mirror depth in gas jet forming of the mirror blank
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Calculation model of the concave mirror depth in gas jet forming of the mirror blank
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Journal Article
Calculation model of the concave mirror depth in gas jet forming of the mirror blank
2023
Overview
The surface accuracy and quality of the mirror blank determine the performance of the optical mirror, so it is essential to explore a simple and effective way to process the mirror blank. Gas jet forming is a simple and efficient way of forming optical surfaces. However, the key to accurately forming mirror blanks is establishing the relationship between the gas jet parameters and the resulting surface shape. Therefore, several experiments were carried out in this study to develop the relevant models to investigate the above issues. The experimental data analysis found that the surface tension of the viscous fluid being processed impacts the shape of the surface formed by the gas jet. Therefore, the new model for predicting the surface shape of gas jets was developed by refining the Blanks and Chandrasekhara model by adding surface tension. The prediction error of the new model for the depth of the surface formed by the gas jet is in the range of 0.0497–0.833 mm, much smaller than the uncorrected model.
Publisher
Springer Nature B.V
Subject
