Wearable electronics should be as compact and comfortable as everyday objects, and not a parody of bulky steampunk crafts. When developing a new concept for smart glasses, researchers from the French organization CEA set a hard limit for themselves: the gadget must fit into the dimensions of ordinary sunglasses. This means that there are no displays and cameras, the picture will have to be transmitted directly to the user's eye.
The technology developed by French scientists combines holographic optics and semiconductor grids. In these smart glasses, the glass acts as a projector that sends photons into the eye in small beams. One beam - one pixel, the grating inside the glass is used to simulate a screen with a resolution of 300x300 pixels, the picture from which is transmitted to the eye pixel by pixel. A person sees a set of dots, which the brain interprets into understandable symbols, letters and numbers.
The prototype of the glasses can only transmit a static image; there is no talk of working with video yet. There is also no possibility to create a color picture, it is still too difficult. And even the stated resolution is nothing more than an experimental assumption, because in holographic optics one does not need to follow the rules for flat panel displays. For example, you can easily shift the image to the right or left without using intermediate data if the user has such a visual impairment.
This technology can open up a new direction in correcting vision problems, when instead of medical treatment, smart glasses are personalized and a person can see normally. This will not heal him and even make him even more dependent on the accessory, but this approach is cheaper and safer than eye surgery in the long run. But, recall, we are still talking more about theoretical developments and concepts, so the French are not yet looking far ahead.