The new technology creates 3D holograms that can be viewed from all angles and without the use of special glasses

A new study published in a professional journal Optics Letters represents a unique technology that allows creating 3D images on ultra-thin film that can be viewed from all angles without the need for special reading devices such as 3D glasses.

To give an idea, it resembles the holographic technologies that we often see in science fiction films such as Star Wars or the Marvel Cinematic Universe. Similar to movies, images seem to float on ultra-thin film and can be viewed in normal lighting. And this is where the difference is compared to older technologies, where images can only be viewed at certain angles or under increased lighting.

“Achieving glass-free 3D imaging with a large field of view, smooth parallax, and a wide range of focusing depths under natural observation conditions is one of the most exciting challenges in optics,” says research team leader Su Shen of Soochow University in China. “Our approach offers an innovative way to achieve vivid 3D images that cause no viewing discomfort or fatigue, are easily visible to the naked eye, and are aesthetically pleasing.”

To demonstrate their technology, the researchers created a 3D image of the cube. The pattern is visible from all angles and under normal lighting conditions. Since this is an initial study, the created cube reached dimensions of only 8 x 8 millimeters. Its image depth was then 0.1 to 8 millimeters. In addition, the team also created an image film with a floating logo, which is intended for decorative purposes, such as on the back of a smartphone.

Similar technology was recently demonstrated on the International Space Station (ISS), where a holographic doctor was “holoported” aboard to virtually visit astronauts in space.

Original publication: Optics Letters (impact factor 3,8)

Source: Lab Roots

Cover image source: Ramadan Balayev, Pixabay

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