Surface measurement using improved crossed-optical-axes geometry

Yuchi Lin; Xiaobing Niu; Dongmei Cheng; Meirong Zhao; Zhanyuan Sun; Yuxiang Zhang

doi:10.1117/12.481748

5 September 2002 Surface measurement using improved crossed-optical-axes geometry

Yuchi Lin, Xiaobing Niu, Dongmei Cheng, Meirong Zhao, Zhanyuan Sun, Yuxiang Zhang

Proceedings Volume 4921, Optical Manufacturing Technologies; (2002) https://doi.org/10.1117/12.481748
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Crossed-optical-axes project grating system is fundamental architecture in 3-D profilometry measurement. Confined by three conditional constraints, it has some limitations in practical application. An improved system relieving the constraints was proposed here. Geometrical deduction based on image ray tracing, optical triagulation and pinhole model was carried out. By projecting another central line fringe as the zero-phase datum, wrapped phase map about reference or measured object could be unwrapped without inducing systematic errors. The simulation was to measure a plate with a height of 80mm when changing geometrical parameters. Compared with the conventional configuration, new system approves more flexibility and maneuverability.

Citation Download Citation

Yuchi Lin, Xiaobing Niu, Dongmei Cheng, Meirong Zhao, Zhanyuan Sun, and Yuxiang Zhang "Surface measurement using improved crossed-optical-axes geometry", Proc. SPIE 4921, Optical Manufacturing Technologies, (5 September 2002); https://doi.org/10.1117/12.481748

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