High-efficiency aerial display using a liquid crystal polarization grating, a retroreflector array, and a right-angle prism.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.390629
Abstract: An aerial display scheme consisting of an orthogonal circular polarization grating (OCPG), a waveplate, a retroreflector array (RRA), and a right-angle prism (RAP) was developed. Because of the OCPG's functionality, retroreflected light from the RRA… read more here.
Keywords: retroreflector array; aerial display; display; polarization grating ... See more keywords
Flexible and wide-range tuning of liquid crystal polarization grating period based on single and interference-free exposure.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.458791
Abstract: We propose a period control method of liquid crystal polarization grating (LCPG) based on an nterference-free and single exposure process. By adjusting three parameters of exposure setup, including incident angle of exposure beam, wedge angle… read more here.
Keywords: crystal polarization; period; liquid crystal; polarization grating ... See more keywords