Abstract

We describe a simple method to extend the depth of field of a conventional camera by inserting a transparent annular ring in front of the pupil of the lens. The insertion of the ring creates an unbalanced optical path difference across the lens aperture, which partitions the pupil and leads to an extended depth of field. This system is analyzed by diffraction and random process theory. Experiments are reported that are in good agreement with the theory.

© 2008 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Incoherently combining logarithmic aspheric lenses for extended depth of field

Kaiqin Chu, Nicholas George, and Wanli Chi
Appl. Opt. 48(28) 5371-5379 (2009)

Reduced depth of field in incoherent hybrid imaging systems

Sherif S. Sherif and W. Thomas Cathey
Appl. Opt. 41(29) 6062-6074 (2002)

Phase plate to extend the depth of field of incoherent hybrid imaging systems

Sherif S. Sherif, W. Thomas Cathey, and Ed R. Dowski
Appl. Opt. 43(13) 2709-2721 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (12)

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

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

Equations (28)

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

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

Metrics

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

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