Physics

Aerospace engineering

Pure mathematics

Mathematics

Specular reflection

Optics

Engineering

Mathematical analysis

Range (aeronautics)

Development (topology)

Scale (ratio)

High dynamic range

Computer science

Phase (matter)

Quantum mechanics

Field (mathematics)

Computer vision

Dynamic range

PhotoniX

This paper presents a short review for phase measuring deflectometry (PMD). PMD is a phase calculation based technique for three-dimensional (3D) measurement of specular surfaces. PMD can achieve nano-scale form measurement accuracy with the advantages of high dynamic range, non-contact, full field measurement which makes it a competitive method for specular surface measurement. With the development of computer science, display and imaging technology, there has been an advancement in speed for PMD in recent years. This paper discusses PMD focusing on the difference on its system configuration. Measurement principles, progress, advantages and problems are discussed for each category. The challenges and future development of PMD are also discussed.

A brief review of the technological advancements of phase measuring deflectometry