Design and characterization of a varifocal camera system with an extended depth of field and focal range

Yanzhao Lu, Xuan Wang, Hong Hua

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents the design and characterization of a compact and affordable varifocal camera system. With its entrance pupil located in front as the first element for easy access, the camera system offers a working F/# as low as 2, is capable of focusing across a wide depth range from optical infinity to as close as 4 diopters through an electrically tunable lens, and maintains nearly constant angular magnification through the focus range by placing the focusing element at proximity to the entrance pupil. These unique features can find a myriad of applications such as image-based head-mounted display calibration and extended depth of field (EDOF) imaging. The paper further demonstrates a single-shot EDOF imaging function by utilizing its property of nearly constant angular magnification through focus scanning.

Original languageEnglish (US)
Pages (from-to)34871-34882
Number of pages12
JournalOptics Express
Volume31
Issue number21
DOIs
StatePublished - Oct 9 2023

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint

Dive into the research topics of 'Design and characterization of a varifocal camera system with an extended depth of field and focal range'. Together they form a unique fingerprint.

Cite this