Hitachi Ltd developed a technology that projects a 3D image in real space and makes it possible for several people to see the 3D image superimposed on a real object without special glasses.
The technology displays a 3D image created with 24 projectors in real space by using several lenses and translucent half mirrors. Hitachi expects that the technology will be used for digital signage, design verification, skill trainings in the manufacturing and medical fields, etc.
At CEATEC Japan 2010, Hitachi showed the "Full-parallax 3D Display Technology," which enables to view a 3D image from wide vertical and horizontal angles. And the latest technology was developed based on the Full-parallax 3D Display Technology.
The new technology realized a horizontal view angle of 60° and a vertical view angle of 30°. Because depth resolution was improved by 1.6 times, the new technology can display natural 3D images, the company said.
Moreover, with the new technology, a 3D image can be displayed in accordance with the location of a real object. When the object is moved, a camera sensor detects the location and angle of the object. Then, based on the information, the location and angle of the 3D image are automatically changed, and the image is superimposed on the object.