It is said that in science fiction movies, there have been invisible people, as long as a drug is injected, people will become transparent.
In real life, people's research on stealth technology has never stopped.
It's not that recently, Invisibility Shield from London, England, has created an invisible shield that magically makes a big living person disappear in front of your eyes.
This thing looks like a piece of transparent glass, put it in front of the room, you can see the wall and the floor behind it.
But when someone walks past it, something magical happens.
You can only see the exposed human head, but the body obscured by the shield is invisible, still on the ground and in the house behind it.
If you put it in the parking lot, the effect is the same.
The person who came from a distance saw only the upper body, and the legs that were covered did not know the end.
And, when the person crouches down, it disappears completely in front of your eyes.
In addition to this, this invisible shield can also make items disappear. Put it in front of the traffic cone, and the traffic cone will disappear in an instant.
So how does it do it?
In fact, the principle is also very simple, that is, the use of lenses to reflect visible light. Behind the shield is used an array of precision-engineered lenses that direct most of the light reflected by the subject away from the person looking and send it from the side through the surface of the shield to the left and right. Because the lenses in this array are vertically oriented, the reflected vertically directional light quickly becomes diffuse when someone passes through the back of the shield. In contrast, the light reflected from the background is brighter and wider, so as it passes through the back of the shield, more light is refracted towards the person watching.
Of course, in order to achieve the best results, the lenses must have a specific shape and be molded with very high precision.
This way, from the viewer's point of view, this background light is effectively applied horizontally to the front of the shield, covering the area where the object is usually visible.
It is worth mentioning that it is not perfect. According to reports, the invisible shield is better used in a unified background such as leaves, grass, sand, sky and asphalt.
Or in some parallel backgrounds, such as empty squares and stairs, there is no problem to use.
However, when moving, there will still be some exposure, but the overall stealth effect is still good.
Currently, crowdfunding is being made on the kickstarter website, and there are two size versions, which are 900 mm high and 600 mm wide. There are also mini models that are 300 mm high and 200 mm wide. The price is 299 pounds and 49 pounds, which is equivalent to about 2500 yuan and 400 yuan. It is expected that it will be delivered in December this year.
Finally, it should be noted that this shield cannot resist the attack of heavy objects, so it can only be used to play, and entertainment is greater than practicality.