What is a 3D display?
All displays that can add depth to two-dimensional images using different technologies are called three-dimensional displays. These displays have different technologies and applications. For example, they are used to make advertising billboards, television screens, game consoles, mobile phones, personal computers and laptops, among others. In this article from the Diaco online store, we will learn about these displays and the technologies used in them.
Technologies used in 3D displays
There are different technologies for making a 3D display . The oldest of these technologies is Anaglyph 3D technology. In this technology, two images with two different color spectrums are displayed. Viewers also use glasses that have two lenses with different color filters. Therefore, each image is received by one eye and then combined by the brain, and the image gains depth. We examine other technologies used in 3D displays together.
Polarized 3D technology
Polarized 3D is the method used today in the construction of 3D cinemas and other large displays. In this method, two synchronized projectors throw different left and right images on a screen (like a cinema screen). These images have two different circular polarizations, clockwise or counterclockwise. The special glasses for these displays also have lenses with the same polarization so that each eye receives the correct image.
3D active shutter technology
3D active shutter technology is used in making 3D TV and some video projectors. In this method, left and right images are sent alternately on one page. The glasses also have shutters to receive only one of the two alternating images. The important point is that in previous technologies, if the glasses are not present, the received image is blurred or distorted. But in this technology, if there are no glasses, the image is not blurry, but it is not three-dimensional either.
3D autostereoscopic technology
Autostereoscopic 3D technology is one of the technologies for creating a 3D image without the need for glasses. The problem with this technology is that it is only suitable for a viewer in a fixed place in front of the screen, and for that reason it is mostly used on small screens. One of the applications of this technology is the Nintendo 3DS game console.
TV and 3D computer monitors
3D TV is a tool with 3D display technology that mimics the way our eyes and brain perceive image depth. The human brain receives the images of each eye separately and then superimposes and integrates them. Therefore, the impression of depth is created, or in other words, the depth of the image is perceived. To mimic such a mechanism, 3D TVs must present two images simultaneously instead of one. So in addition to the TV, you need 3D glasses as well as 3D video content.
We explained to you about 3D glasses in 3D technologies. But what is the method of producing 3D movies? There are different technologies in the production of these films. The most common of them is that each scene of the film is filmed by two cameras that have a certain distance from each other. 3D computer and laptop screens also use exactly the same technologies and methods, and the only difference is in the screen size.
What is a 3D LED billboard?
To understand the feature of depth in a 3D cinema, you must use special glasses for this technology. But in the 3D billboard, you don’t need these glasses anymore. In the last three or four years, prominent brands in the world have used these screens to advertise their products and brands. For example, the Swiss watch brand IWC Schaffhausen showed the details and parts of its watches in 3D on a screen in London. These 3D movies are also very popular in social networks and are quickly shared by the users of these networks.
How does a 3D LED billboard work?
Two technologies of flexible LED displays and 3D display technology are used in the construction of 3D LED advertising billboards. The special thing about this display method is that these displays create a kind of visual illusion that the human brain perceives as the depth of the image. 3D LED displays have the ability to bend up to 90 degrees. Therefore, they can combine and display two images recorded from different angles. So our eyes can detect parallax to see images in three dimensions.
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Commercials recorded for display on 3D billboards are films with cinematic gimmicks, innovative ideas and special technologies at the time of filming. These cases make the effect of advertising films on passers-by multiply. Therefore, advertising messages remain in the minds of the audience for a much longer period of time. On the other hand, this attraction makes the audience want to know more about the brand and the products being advertised.
