Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Broadband behavior of an optical–digital focus-invariant system

Not Accessible

Your library or personal account may give you access

Abstract

We present experimental evidence that demonstrates a greatly increased depth of field in a broadband-illuminated imaging system through the use of a special-purpose phase mask and digital filtering. The phase mask is of a simple rectangularly separable cubic-phase design, whereas the digital filtering used was a simple object-independent least-squares inverse filter. We demonstrate successful operation of the system over a range corresponding to 30 times the Hopkins criterion for allowable misfocus.

© 1996 Optical Society of America

Full Article  |  PDF Article
More Like This
Realizations of focus invariance in optical–digital systems with wave-front coding

Sara Bradburn, Wade Thomas Cathey, and Edward R. Dowski
Appl. Opt. 36(35) 9157-9166 (1997)

Extended depth of field through wave-front coding

Edward R. Dowski and W. Thomas Cathey
Appl. Opt. 34(11) 1859-1866 (1995)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved