Active metrology by digital holography

Wolfgang Osten

doi:10.1117/12.516594

27 May 2003 Active metrology by digital holography

Wolfgang Osten

Proceedings Volume 4933, Speckle Metrology 2003; (2003) https://doi.org/10.1117/12.516594
Event: Speckle Metrology 2003, 2003, Trondheim, Norway

Abstract

Holography provides the possibility to record and to reconstruct the complete information of optical wave fields. Recording holograms directly on CCD targets allows the numerical reconstruction of phase and intensity by the computer. Interferometric techniques such as 3d-displacement analysis and 3d-contouring can be implemented in this way easily and with high flexibility. In addition to the numerical reconstruction, the digitally recorded holograms can be transmitted via telecommunication networks and optically reconstructed at any desired place using LCD displays or DMDs. This possibility opens new experimental approaches with respect to the investigation of similar objects at different places by using principles of comparative holography. Moreover, the direct access to all relevant components of the digitally stored wave front allows the application of principles of active vision to coherent metrology. In this article the principles of digital holography are explained shortly. After that the combination of digital holography with principles of active metrology are discussed. Finally some practical examples are given to illustrate this combination.

Citation Download Citation

Wolfgang Osten "Active metrology by digital holography", Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); https://doi.org/10.1117/12.516594

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