Open AccessMultifunctional binary diffractive optical elements for structured light projectors
Author(s) -
Omri Barlev,
Michael Golub
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.021092
Subject(s) - optics , beam splitter , diffraction , diffraction efficiency , binary number , materials science , diffraction grating , beam (structure) , lens (geology) , laser , physics , optoelectronics , arithmetic , mathematics
A set of diffractive optical elements for multiple-stripe structured illumination was designed, fabricated and characterized. Each of these elements with a single layer of binary surface relief combines functions of a diffractive lens, Gaussian-to-tophat beam shaper, and Dammann beam splitter. The optical investigations of laser light patterns at 20° fanout angle reveal up to 88% diffraction efficiency, high contrast, and nearly diffraction limited resolution. The developed technology has the potential for reducing complexity, number of optical components, power consumption and costs of structured light projectors in mobile and stationary 3D sensors.