Surface contour measurement by grating projection method based on Talbot effect

M. Thakur; Chenggen Quan; Cho Jui Tay

doi:10.1117/12.621465

12 April 2005 Surface contour measurement by grating projection method based on Talbot effect

M. Thakur, Chenggen Quan, Cho Jui Tay

Author Affiliations +

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621465
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

Motivated by the Talbot-effect, a grating projection system was designed. Periodic patterns were produced from the projection of a grating illuminated by collimated laser beam. The self- image of the grating is projected on object surface and the deformed grating image is captured by a CCD Camera for subsequent analysis. The phase variation is achieved by using a linear translation stage incorporated to the grating. In this application, a coin with an uneven surface of less than 0.2 mm is tested to demonstrate the validity of the method. The experimental results are compared with test results using mechanical stylus method.

Citation Download Citation

M. Thakur, Chenggen Quan, and Cho Jui Tay "Surface contour measurement by grating projection method based on Talbot effect", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621465

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

CCD cameras

Fringe analysis

Phase shifts

Phase shifting

Optical design

Optical metrology

Phase shift keying

Show All Keywords

Keywords/Phrases

Search In:

Publication Years