Dispersion control is crucial in optical systems, and chromatic aberration is an important factor affecting imaging quality in imaging systems. Due to the inherent property of materials, dispersion engineering is complex and needs to trade off other aberration in traditional ways. Although metasurface offers an effective method to overcome these limits and results in well-engineered dispersion, off-axis dispersion control is still a challenging topic. In this paper, we design a single-layer metalens which is capable of focusing at three wavelengths (473 nm, 532 nm, and 632 nm) with different incident angles (0°, -17° and 17°) into the same point. We also demonstrate that this metalens can provide an alternative for the bulky color synthetic prism in a 3-chips digital micromirror device (DMD) laser projection system. Through this approach, various off-axis dispersion controlling optical devices could be realized.
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Opto-Electronic Advances
ISSN: 2096-4579
CN: 51-1781/TN
Opto-Electronic Advances is the open-access journal providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and opto-electronics.
CN: 51-1781/TN
Opto-Electronic Advances is the open-access journal providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and opto-electronics.
Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging
Author Affiliations
Correspondence: lxg@ioe.ac.cn
First published at:Apr 21, 2020
Abstract
References
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National Natural Science Foundation of China under contact Nos. 61622508, 61622509, and 61575201
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Dou K H, Xie X, Pu M B, Li X, Ma X L et al. Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging. Opto-Electron Adv 3, 190005 (2020).
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