As a low cost, full-field three-dimensional shape measurement technique with high dynamic
range, Phase Measuring Deflectometry (PMD) has been studied and improved to be a …

Phase measuring deflectometry (PMD) is a superior technique to obtain three-dimensional
(3D) shape information of specular surfaces because of its advantages of large dynamic …

The fast development in the fields of integrated circuits, photovoltaics, the automobile
industry, advanced manufacturing, and astronomy have led to the importance and necessity …

As a requisite and key step in some gradient-based measurement techniques, the
reconstruction of the shape, more generally the scalar potential, from the measured gradient …

This paper presents a novel fringe projection technique for fast three-dimensional (3-D)
shape measurements of moving highly reflective objects. By combining the standard three …

In this work, a model based method is applied to phase measuring deflectometry, named
modal phase measuring deflectometry. The height and slopes of the surface under test are …

The applications of windowed Fourier fringe analysis in the past decade are reviewed.
Because fringe patterns from different optical measurement systems are similar, the …

Phase measuring deflectometry has been applied for free-form specular surface metrology,
but its measured slope results are sensitive to the depth of sample positioning, which is also …

Traditional deflectometry techniques suffer from the issue of out-of-focus image acquisition
since the camera is pointed directly at the specular surface, and the image quality is greatly …

光学自由曲面因其表面自由度较大, 可以针对性地提供或矫正不同的轴上或轴外像差,
同时满足现代光学系统高性能, 轻量化和微型化的要求, 逐渐成为现代光学工程领域的热点 …