NICT Digital Holography

The NICT has developed the world's first digital holography system that can display color video with a viewing angle of 15 degrees and diagonal width of 4 cm. This system was exhibited at CEATEC JAPAN 2010.

"Holography was originally a technology for showing still pictures using photographic plates. By digitizing holography, it can be used to display video. Here, we're presenting our latest digital holography system."

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Digital holography is said to be the ultimate 3D technology, as it doesn't need 3D glasses or strain the eyes, it has high picture quality, and it faithfully reproduces depth. However, it also has some technical problems: the viewing angle is narrow and the 3D pictures are small. So the big issue with digital holography is that the 3D pictures are difficult to view.

The newly developed system uses a unique technology to increase the viewing angle in a 33-megapixel, ultra-high-definition display. Compared with previous systems, the viewing angle is over three times as wide and the display area is about twice as large. So this system makes video holography easier to watch.

"Today, we're exhibiting the system itself. The holography pictures are created using computer graphics. We're showing computer graphics of the Earth and Moon, at a distance of 4 cm."

This system uses three ultra-high-definition LCD elements, with resolution of 33 megapixels and diagonal width of 4 cm. Compared with using a single LCD, this enables light to be reproduced through three times the angle. In this way, it achieves a wide viewing angle of 15 degrees in the horizontal direction. In addition, color display is achieved by using the "time-division color method," where red, green, and blue holograms are repeated in turn. The refresh speed is 20 cycles per second.

"Among the various display methods, digital holography is said to be the ultimate 3D technology. And our ultimate aim is for this ultimate method to be used in broadcasting and communications. So we'd like to keep working on this system."

Source: DigInfo TV