Since the birth of transformation optics, invisibility has become an intriguing goal of scientific research. This research direction is about realizing various illusionary effects and even light-field stereoscopic display. Our previous works have gone beyond the design of invisibility cloaks to accomplish invisibility without actually cloaking the object, i.e. “cloaking” at a distance (Read more), and create optical illusions of arbitrary objects, which is now denoted illusion optics (Read more). We have reduced the difficulty of implementing transformation optics at optical frequencies by using pure-dielectric structures with spatial dispersions (Read more). By leveraging the power of metasurfaces, we have also developed transmission-type invisibility cloaks of ultra-thin thickness (Read more), and made a dielectric surface “invisible”, i.e. absent of both reflection and refraction (Read more). We are further exploring illusionary camouflages of space and time.