传统的多表面波长调谐移相干涉法只能实现透明被测件处于固定位置下的测量,
当移相值或者腔长改变时算法的有效性和求解精度没有被深入讨论和分析 …

The difficulty in multi-surface measurements comes from that each measured surface
contributes harmonics to the fringe patterns, and the wavelength-shifting technique is an …

Optical coherence tomography (OCT) is a powerful imaging technique that is capable of
imaging cross-sectional structures with micrometer resolution. After combining with phase …

A multi-surface phase demodulation algorithm is proposed to measure surfaces of the
transparent plate simultaneously. A non-linear least-squares method based on the trust …

Phase demodulation by wavelength-tuning phase-shifting interferometry is increasingly
significant for precision metrology of engineering surfaces. However, the existing multi …

In wavelength-shifting measurements of the transparent flat, multi-surface harmonics of the
measured surfaces with different frequencies provide the corresponding intensity …

As a non-destructive detection technique for measuring parallel transparent optics,
wavelength-shifting interferometry provides a separation basis for multiple measured …

To efficiently and accurately realize four-surface measurements with flexible cavity lengths
and sampling frequencies, a wavelength-tuning phase-shifting matching algorithm based on …

The core issue of multi-surface wavelength-shifting interferometry at free cavity lengths is
mainly centered on adaptively matching the tuning step. To avoid harmonic aliasing and …

High-precision measurements of the surface depth map represent a challenging task in
many industrial sectors. In this study, we present a simple frequency scanning interferometry …