@inproceedings{9a0639b25d244aa18b4b9e3eadf73ff2,
title = "Co-axial depth map sensor with an extended depth range",
abstract = "The conventional depth map sensors have limited depth range, or they need to sacrifice depth accuracy for a larger working range. To overcome such problems, in this work, we propose a co-axial depth map sensor with an extended depth range based on controlled aberrations. This depth map sensor implements depth measurement by projecting a near-infrared astigmatic pattern onto the test scene and measuring the contrast change of the reflected pattern image in the tangential and sagittal directions. By adding a tunable lens in the projection optics, this depth map sensor can achieve the extended depth measurement without the loss of high depth accuracy and high depth map resolution.",
keywords = "3D camera, Depth map sensor, controlled aberration, extended depth range, focus tunable lens",
author = "Mohan Xu and Hong Hua",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Optical Design Challenge 2019 ; Conference date: 03-02-2019",
year = "2019",
doi = "10.1117/12.2523653",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Christophe Peroz and Kress, {Bernard C.}",
booktitle = "Optical Design Challenge 2019",
}