Display Settings:


Send to:

Choose Destination
Appl Opt. 1993 Sep 1;32(25):4728-37. doi: 10.1364/AO.32.004728.

Three-dimensional displacement measurement by a holospeckle interferometry method.


The three-dimensional displacement of a structure may be measured by holographic interferometry and speckle interferometry. Under the general heading of holographic interferometry a number of distinct techniques are possible. These include the zero-fringe method, which uses three separate holographic plates, the fringe-localization method, and the fringe-counting method, all of which require a complicated recording and analysis system and high stability. These requirements make the techniques unsuitable for use in most industrial settings. In this paper we present a holospeckle interferometry method that couples objective speckle and reflective holographic interferometry and that is capable of obtaining the three-dimensional displacement of an opaque object with good visibility and resolution by a single holographic plate. Being inexpensive and portable, the recording and analysis system can readily be adapted to industrial use.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk