New method for estimating wavefront from curvature signal by curve fitting

In Woo Han

doi:10.1117/12.196542

1 April 1995 New method for estimating wavefront from curvature signal by curve fitting

In Woo Han

Author Affiliations +

Optical Engineering, Vol. 34, Issue 4, (April 1995). https://doi.org/10.1117/12.196542

Abstract

We present a new method to estimate the wavefront with the curvature-sensing technique proposed by F. Roddier. Instead of solving a Poisson equation for the curvature signal, we estimate the wavefront by direct least-squares curve fitting of the curvature signal with derivatives of Zernike polynomials. It is computationally simpler and faster. From computer simulations, it is shown that the curve-fitting method gives quite accurate wavefront estimation. It is especially useful when only a fixed number of aberration modes are of interest, as in the optical-axis adjustment of a telescope.

Citation Download Citation

In Woo Han "New method for estimating wavefront from curvature signal by curve fitting," Optical Engineering 34(4), (1 April 1995). https://doi.org/10.1117/12.196542

Published: 1 April 1995

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