Autostereoscopic displays are special displays which allow many different types of content (objects, animations, pictures, videos, and advertising) to be seen spatially in 3D. The major innovation with auto-stereoscopic displays compared to former technologies is the fact that the spatial viewing becomes possible without the inconvenient need of “red-and-green”, polarized nor shutter glasses.
This is achieved by among other things the application of optical technologies and elements (so called parallax barrier or lenticular lens panes) that ensure that each eye of the viewer sees a slightly different perspective. The human brain then processes these perspectives to a spatial picture.
The autostereoscopic technology can be basically divided in the following two main categories:
Five different perspectives are projected in front of the screen. Since these five perspectives are horizontally spread, many users can see in 3D at the same time in a wide area standing or sitting comfortably around the display. It is literally possible to walk around an object. 3D digital signage and education becomes a reality.
The so-called digital signage market is the main target for this technology. It is about digital marketing in 3D in any place where customers or people passing can be reached with an advertising message: public places (airports, railway stations, and sports stadiums), department stores, shops, chemist's shops, fast food chains, etc. Furthermore Multi-View 3D displays can be used at fairs, events, conferences, general assemblies or for product presentations and company presentations in company entrance halls. The Multi-View technology can also be used for a clear and understandable transmission of information in schools, colleges, museums or tourism centers. Last but not least, it is also a new element for the fun industry such as at fun parks or in casinos and discotheques.
TRIDELITY has developed a unique product for the digital-signage market. Besides the landscape models, we are the only company offering multi-view portrait 3d display worldwide. These displays were specially developed to atract people due to it's higher stopping power. In conjuction with our content management solution, the multi-view displays offer the ultimate solution for digital-signage.
Single-Viewer devices work with two perspectives built up approximately 70 cm in front of the display. The main advantage compared to the Multi-View technology is a higher reachable resolution per eye and a better picture separation of the different perspectives. On the one hand this leads to the possibility to create content with a higher depth disparity - on the other hand very low depth differences can also be visualized spatially. For many applications where 3D precision is a key factor this feature is a major advantage.
In order to get a perfect 3D impression, the eyes of the user must be correctly positioned within the so-called sweet-spot. Alternatively, the user may find himself in the inverted spot where the right eye sees the perspective of the left eye and vice-versa.
Through the use of an optional tracking system, the sweet spot will be continually adjusted according to the viewer’s eye positions without suffering any loss of image quality.
The Single-Viewer technology is destined to the work as part of the modern "3D workstation". 3D imagination can considerably support and influence critical decisions and work steps in various fields. The target markets for this technology are vast. The most significant ones are the following: geo science information (e.g. landscape data processing and scenery measurement), medicine (e.g. keyhole surgery supported by 3D visualization: ENT, arthroscopy, and neurosurgery), satellite picture evaluation, CAD -design, prototyping and design engineering.