Mitsubishi's Display projects 'passable' image in midair

By Naoki Tanaka

Mitsubishi Electric Corp says it has developed a display capable of projecting a 56-inch image (886 x 1,120mm).

Viewers can freely pass through an image (video) that the display projects in midair. Mitsubishi Electric expects that the new display will be used for digital signage, amusements, guide signs, etc. The company has been developing the display in the aim of commercializing it in or after fiscal 2020.

There have already been displays that can show an image above a table-like device. And, in demonstrations, images displayed by those displays were touched and penetrated through by a hand. However, because of the table-like device right below the image, it was not possible for a human to walk through the image.

On the other hand, there are displays that are used in theaters, etc, and can project an image with a size equivalent to a human in midair. Those displays are used for showing, for example, the virtual images of artists on the stage in concerts. In this case, people on the stage can pass through those images projected in midair. However, the audience cannot approach the images because there is a half mirror physically separating the stage from the seats for the audience.

This time, Mitsubishi Electric said that an unspecified large number of people will pass through an image projected by the new display. The company designed the optical system so that an image is displayed in front of the half mirror (beam splitter), unlike the displays used in theaters.

The optical system was designed as follows. The half mirror is obliquely placed so that the image of the right screen is reflected to the back, where there is a retroreflective sheet that reflects incident light to the incident direction. As a result, a passable large image can be displayed in midair 1m or more away from the half mirror.

Mitsubishi Electric also displayed "guide images" on walls located to the right and left of the midair image to naturally focus the viewer's eyes on the midair image.

© Japan Today

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Excellent! I like the technical description.

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This is using the old tech from the mirage illusion bowl, but honestly from the picture taken compare to the guide image on the left and right and the image on the center projected, it looks blurry and passable in midair to immediately bump to an oblique large mirror at 1m, I guess I'll pass that one.

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And 10 years later, the korean/chinese will make it more efficient and Mitsubishi gone bankrupt like most Japanese companies! lmfao!

-1 ( +0 / -1 )

And 10 years later, the korean/chinese will make it more efficient and Mitsubishi gone bankrupt like most Japanese companies! lmfao! Most Japanese companies aren't bankrupt. Even if they were, why would that be amusing?

-1 ( +0 / -1 )

In and after 2020?? Some other company will come up with same concept & put on market in 3 years!

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