High-accuracy white-light optical piston sensor for segmented optics

Alan Wertheimer; Thomas William Dey

doi:10.1117/12.140758

5 February 1993 High-accuracy white-light optical piston sensor for segmented optics

Alan Wertheimer, Thomas William Dey

Proceedings Volume 1755, Interferometry: Techniques and Analysis; (1993) https://doi.org/10.1117/12.140758
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A novel piston sensing concept is described for measuring piston over the +/- 0.5 wave range. The image of a white light point source is optically processed using a half-wave phase plate to enhance the presence of piston in the incident wavefront. The resultant point spread function is recorded on a CCD camera and analyzed using a simple intensity balance algorithm. Theoretical derivation and experimental results are provided, with emphasis on piston values below 0.25 waves. Piston values are measured to +/- 1/200 wave accuracy or better with a repeatability on the order of +/- 1/1000 wave.

Citation Download Citation

Alan Wertheimer and Thomas William Dey "High-accuracy white-light optical piston sensor for segmented optics", Proc. SPIE 1755, Interferometry: Techniques and Analysis, (5 February 1993); https://doi.org/10.1117/12.140758

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