Digital holographic interferometry as a tool to obtain shapes

Ubaldo Uribe López; María del Socorro Hernández-Montes; Silvino Muñoz-Solís

doi:10.1117/12.2195736

24 August 2015 Digital holographic interferometry as a tool to obtain shapes

Ubaldo Uribe López, María del Socorro Hernández-Montes, Silvino Muñoz-Solís

Proceedings Volume 9660, SPECKLE 2015: VI International Conference on Speckle Metrology; 96600G (2015) https://doi.org/10.1117/12.2195736
Event: SPECKLE 2015: VI International Conference on Speckle Metrology, 2015, Guanajuato, Mexico

Abstract

This work describes a new method to obtain shapes on surfaces based on digital holographic interferometry (DHI). Research has been reported with different methods, such as fringe projection. DHI, being a full-field technique, decreases the number of images to capture and the processing time, besides having a high resolution. Our proposed method consists in obtaining the shape of the object and a reference plane using an out-of-plane interferometer. The phase difference of the recorded holograms is achieved by means of the Fourier transform method. This resulting phase has a tilt produced by the angle of the object beam relative to the optical axis, which is removed by subtracting the phase difference from the reference plane. The method was tested in two cylinders, one with dimensions of 17.5x23.4mm reconstructed with a height sensitivity of 4.1mm, and another with two levels: one half with dimensions of 16.08x12.75mm, and the other half of 19.07x12.75mm; the result was a successfully reconstructed shape, with a height sensitivity of 2.7mm.

Citation Download Citation

Ubaldo Uribe López, María del Socorro Hernández-Montes, and Silvino Muñoz-Solís "Digital holographic interferometry as a tool to obtain shapes", Proc. SPIE 9660, SPECKLE 2015: VI International Conference on Speckle Metrology, 96600G (24 August 2015); https://doi.org/10.1117/12.2195736

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available