2023-07-29 08:30:00
Who among you has never wanted to try to make yourself invisible like in Harry Potter? Whether it’s to prank or scare your friends?(We had already talked about Muggles trying the experiment) Well, you might be able to do that soon. Yes, an invisibility shield has just been invented! This is the perfect opportunity to play with your Potterheads!
How the Invisibility Shield works
Each shield uses a lens array designed precisely to direct much of the reflected light away from the observer. The shield laterally deflects this light left and right.
Vertically oriented lenses create a band of light reflected from the standing/crouching subject. This band quickly becomes diffuse passing horizontally through the rear of the shield.
In contrast, the light reflected from the background is brighter and wider. This results in greater refraction through the shield towards the observer. The background light is spread horizontally across the front face of the shield, from the point of view of the observer. This is where the subject would normally be visible.
In short, this set of this process gives the invisibility shield the possibility of making you completely undetectable for others.
Interaction of lenses to create the effect of invisibility
This part is a little more complex, but it helps to understand how the lenses create the invisibility shield. The cross section seen from above represents one of the lenses of the shield. Light entering the back of the shield is refracted towards a focal point.
From there, it spreads to the sides. However, when the outer surface of the lens reaches a low enough angle to the incoming light ray, the light is reflected internally.
Also, it does not refract outward. It is then scattered, reflected and refracted around and out of the lens, also interacting with the side lenses.
Creation of optical networks for invisibility shields
The shields are made by creating the optical gratings by extruding and embossing a polymer. This forms elongated convex lentil leaves. These lenses must be given a specific shape and formed with great precision.
This allows to handle light appropriately and create functional invisibility shields. They tested different lens shapes with varying profiles, angles, depths and separation distances. In short, this helped to find the best configuration.
Optical mounting techniques for invisibility shields
They also tested different optical mounting techniques to attach the arrays to stronger scaffolding. The main solution aims to preserve 98% of the optical properties of the networks. She completely eliminates the need for toxic resins that could be used in such a construction.
The performance of invisibility shields
Invisibility Shields work best against flat backgrounds such as vegetationgrass, rendered walls, sand, sky and asphalt. Backgrounds with defined horizontal lines also work greatwhether natural like the horizon or man-made like painted walls, rails or lines.
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