There is nothing There is a feeling in the air "Touch panel in the air" such as devices using ultrasound

From Thursday, October 23rd, to October 26th (Sun) from 2014 to the "Digital contents EXPOAt the venue, you can touch mysterious experiences and sight using the power of ultrasound. It may be interesting to try experiencing a number of unusual scenes from ultrasonic waves that you can not experience in everyday life.

◆ University of Tokyo Shinoda · Makino Laboratory Booth
Aerial tactile touch panel | DIGITAL CONTENT EXPO
http://www.dcexpo.jp/5518

The device placed on this desk is an "aerial touch touch panel" that creates something like a virtual touch panel on nothing space.


On the oblique face of the front of the main unit, the numeric keypad of 3D image was displayed. It is hard to convey in the picture, but it seems to be located just at the same height as the oblique face.


"Please try touching the key", urged the finger to be close to it, the vibration was transmitted to the finger with the sound of "bee". Because the feel is transmitted to the fingertips despite the space which does not even have a transparent glass panel, it sounds like "Wow!" Unexpectedly. When you touch it carefully (?), Light vibration like a vibrator on a smartphone is transmitted to your fingers.


A movie at the time of actually experiencing it is like this. The first half of the movie has been turned off, but if you turn it on you will hear the sound "bee" and you will be able to feel the feeling of feeling something on your finger.

I tried touching my finger on "Aerial Tactile Touch Panel"


Here is a view of holding a tag paper instead of a finger. Looking at this, it is not impossible to think that it is "the power of the wind?", But it is obvious that the wind does not flow when actually touched.

A state of a piece of paper that is pushed back when it touches an "aerial touch sense touch panel" although there is nothing space


The mysterious energy principle is to use the power of ultrasound not heard by the human ear. Looking up from the bottom of the device you can see that approximately 900 small cylindrical parts are lined up on the back side of the top board. All of these cylindrical parts are special speakers, and human beings generate ultrasonic waves of 40 kHz that are too high to hear.


However, with mere ultrasound, it should not be enough energy to be felt by human fingers. Therefore, this device precisely controls the sound generation timing etc. of 900 speakers, so that it becomes ultrasonic waveDirectionalityBy concentrating energy on one point as if using a lens as if using a lens, it is possible to create enough energy to feel with the fingers and to turn freely in the necessary place It is like that.

The following movies are demonstrating their control abilities. I move icons dragged with fingers around the screen, but low vibration of "Bububu" is transmitted to the fingertips all the time. Of course this is because we control the directivity of ultrasonic waves in real time according to the position of fingers. In addition, feeling strongly feels the feeling that it actually operates because there is a feeling, I feel strongly that "real feeling" which can be said to be the opposite polarity "feeling of air swing" which tends to be in the conventional 3D display device strongly. It is not an exaggeration to say that a breakthrough has occurred at once in order to put into practical use, because "ultrasonic technology" and "3D display technology" which can be said to be decided hit individually have become one.

"Aerial tactile touch panel" has the feel as it is even when dragging and dropping an icon


Aerial tactile sensation A variety of devices are placed beside the touch panel.


There are more ultrasonic generators inside of this, and it is arranged in a cylindrical shape. And beyond that, a 3D stereoscopic display is also placed here, and the image of a round earth is displayed.


If you put your hands in the middle of the cylindrical part like this ...


As the hand moves, the earth moves like a bubble, and at the same time the feeling that a round one is touching is transmitted to the palm of your hand. Like a touch panel, there is a feeling that there is a sudden feel in the space where there is nothing here either. The feeling is best understood by actually having the hand put in, but if it says, what is like a mass of warm air floats in nothing space, soft feeling of elasticity is transmitted when touching It should be pretty close if you think that it feels like coming. The state of such movement is from the following movie.

I tried twinkling the earth with a cylindrical "aerial touch touch panel"


Here is a movie that will make the operation of ultrasound obvious. Liquid is poured in the plate, and the lizard projected by the projector runs on it. Since the lizard is an image, nothing will happen even if you walk on water, but for some reason the splashes will rise. As most people imagine, this is also due to the action of ultrasound.

A state in which the ultrasonic energy turns into a lizard and the water surface shakes with Pasha Pasha


The ultrasonic generator was set at a height of approximately 20 cm from the surface of the water. Ultrasonic waves emitted from this panel gather at one point, making it invisible to the eyes of making waves on the water surface.


◆ University of Tokyo Calendar Laboratory · Yoichi Ochiai / Nagoya Institute of Technology Stell Laboratory Booth
Pixie dust | DIGITAL CONTENT EXPO
http://www.dcexpo.jp/5526

At this booth also exhibited new content display technology using ultrasound. "Pixy dustIn the technique called "you can see the surprising sight of small white grains floating on the surface of the space surrounded by the panels. In this way, if you drop fine particles from the top, some of them will be caught in the space.


As you can see, this is also the easiest to understand with a movie. Even though there is no transparent panel in any space, it can be taken as if a white grain is caught in the air and floating as if the net invisible to the eyes is stretched

In the "Pixie dust" using ultrasound, white grains are caught in space and fluffy floating


This is the whole picture of the device. Thinking that "a panel very similar to the above-mentioned ultrasonic device is used" and heard the story, Mr. Hoshi who was doing the demonstration belonged to the above Shinoda · Makino laboratory, He said that he continues his research independently and independently.


The mechanism by which white particles float is due to the grain entering a specific point caused by combination of waves of vibration by ultrasonic wave. The grain weighs as very small as about 1 gram, so it seems that it can be confined even by the power of ultrasonic wave.


By applying this technology, it seems that it will be expected to be utilized in the fields of magical display floating in the air with fluffy, advertisement, or entertainment. It is also interesting to try some thought whether these products will melt in everyday life will emerge from these latest technologies that are not frequently seen in the everyday lives.