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Co-axial depth map sensor with an extended depth range
Author(s): Mohan Xu; Hong Hua
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Paper 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.

Paper Details

Date Published: 27 February 2019
PDF: 8 pages
Proc. SPIE 11040, Optical Design Challenge 2019, 1104003 (27 February 2019); doi: 10.1117/12.2523653
Show Author Affiliations
Mohan Xu, College of Optical Sciences, The Univ. of Arizona (United States)
Hong Hua, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 11040:
Optical Design Challenge 2019
Bernard C. Kress, Editor(s)

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