3Dnäytöt

3Dnäytöt, or 3D displays, are electronic visual display devices that can convey image information with depth perception, creating a three-dimensional visual experience. Unlike traditional 2D displays that present images on a flat plane, 3D displays simulate depth by presenting slightly different images to each eye. This difference in perspective is then interpreted by the human brain as depth.

There are several technologies used to achieve 3D viewing. Autostereoscopic displays, also known as glasses-free 3D, do not require special eyewear. These displays use techniques like parallax barriers or lenticular lenses to direct specific images to each of the viewer's eyes. Parallax barrier displays insert a layer of regularly spaced slits in front of the screen, allowing only specific pixels to be visible from each angle. Lenticular lenses, on the other hand, use a sheet of plastic with tiny lenses that refract light to create the 3D effect.

Another common type of 3D display is stereoscopic. These displays typically require special glasses. Active-shutter glasses contain liquid crystal lenses that alternately block one eye's view, synchronized with the display showing the corresponding image for that eye. Passive polarized glasses use different polarization filters for each lens, and the display presents images with corresponding polarization.

3Dnäytöt have found applications in various fields, including home entertainment (televisions, gaming consoles), cinemas, medical imaging, and professional visualization. While the technology has evolved significantly, challenges remain in areas such as optimal viewing angles, image brightness, and the potential for eye strain or discomfort for some users.