Vol 2 Chapter 773: The power of the eyes

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In fact, cameras, cameras or optical imaging devices can be regarded as electronic glasses or optical glasses, and the imaging principle of glasses is the same.
But until now, we haven't been able to build imaging devices that exceed our human eye imaging qualities.
In fact, the imaging quality of our human eyes is very common in nature, as if we describe a person's eyes as good, saying that he has a pair of eagle eyes.
In nature, the eyes of eagles are indeed very powerful. It can see animals on land several kilometers away from the sky, and then dive to accelerate to catch animals.
Squids are the most highly evolved animals in the animal world. Their pupils are quirky W-shaped, they cannot recognize colors, but they can see the polarization of light. Therefore, even in dim light, a sharp contrast can be seen.
Although humans can achieve better focusing by changing the shape of the eye lens, squid can change the shape of the entire eye.
In addition, the animal's internal sensors allow it to observe what is located in front of and behind them simultaneously.
Especially among the most famous king squid, relying on their own huge eyes, they can live in the deep sea of ​​thousands of meters, and can also fight whale sharks.
Butterflies (dragonflies), like many insects, have a pair of compound eyes. These eyes are composed of hundreds of tiny hexagonal lenses, so they can see all directions at the same time.
And the butterflies can also see the ultraviolet light that is invisible to the human eye. It is this ultraviolet light that provides them with a sense of orientation, and guides them to find flowers with a variety of delicious nectar.
The chameleon's eyes do not have upper and lower eyelids, but they have a tapered structure that is just large enough to accommodate their pupils. Each cone structure can rotate independently, so the chameleon can actually look at two separate objects in completely different directions at the same time.
This visual advantage makes them particularly good at catching high-speed flying insects. In fact, frogs also have this function, they have a very keen observation ability for high-speed moving objects.
The eyes of owls are also very powerful, they have excellent depth perception, especially in dimly lit environments. Therefore, it is possible to fly through the forest at high speed in the dark, not only to avoid various obstacles, but also to find some prey on the ground.
From this point of view, its eyes are no worse than the ultrasound of a bat.
We humans have always been good students of nature, and we are constantly learning the rich knowledge contained in nature. Also by imitating the specific functions of the eyes of these various animals, we have also developed a variety of optical imaging devices.
For example, telephoto lens, can see the stage at a long distance. Some advanced military optical reconnaissance satellites can clearly see the license plates of cars on the ground over hundreds of kilometers of space.
For example, high-speed cameras, through which we can see bullets and shells flying at high speed, and even scientists have developed ultra-high-speed cameras that can see the movement of light.
Scientists at the University of California, California have developed an ultra-high-speed camera that can take 6.1 million photos in one second, with a shutter speed as high as 440 trillionths of a second. Scientists are trying to use this ultra-high-speed camera to solve many scientific research problems.
Another example is night vision, infrared cameras, etc. Night vision can see the target clearly in the dark night, and now full-color night vision can even display colors. Infrared thermal imaging, can clearly see the temperature emitted by various stages, and is widely used in various fields.
As for compound eyes, in fact, scientists have also used this as inspiration to develop many compound eye technologies.
It may be strange to everyone, but in fact we have all used this technology. The multi-camera imaging technology on smartphones is actually using this technology principle. Combine the pictures taken by multiple cameras to form a higher quality photo.
Not only that, the photos taken by multiple cameras have higher pixels. And compound eyes can provide a unique advantage, it can produce a panoramic perspective, showing a significant depth of senses.
With the increasing number of cameras with various functions on mobile phones or mobile devices, some people worry that the back of the phone will be occupied by the camera one day.
So experts are wondering if there can be a technology to replace so many cameras, so that one camera can do more than one, or even tens of hundreds of cameras can do.
Therefore, compound eye technology has once again attracted attention from technical experts, but how to bionic compound eyes on insects has become a subject of research.
The research project of the Optical Imaging Technology Laboratory is compound eye integrated lens technology. This project is simply to study compound eye lenses. How to focus multiple cameras on one lens, so that this lens has different functions of other lenses.
After all, it's still on the lens, and on the lens, the lens is the key. How to design and manufacture these lenses so that they can achieve various functions is also the main problem faced by the research team.
At the beginning, the direction of the project research team was mainly to focus all the lenses of these different cameras on one lens. To put it simply, multiple lenses share a photosensitive element. This technology has long been in existence. As early as the film era, there were already multi-lens cameras.
It was just that there were one or two, two or three lenses for the multi-lens at that time, and what the project research team had to do was to gather more lenses, seven or eight, or even a dozen or so.
This increases the difficulty of the subject. How to make these dozens of lenses share a limited area of ​​photosensitive elements is a difficult problem. UU reading www. uukanshu. com
In fact, in the past, technicians also developed so-called compound-eye cameras for bionic compound eyes. It is a compound eye camera with countless cameras arranged in a hemispherical array according to the eyes of dragonflies or butterflies, thus forming a compound eye camera similar to the shape of insect compound eyes.
Then, the photos taken by these cameras are synthesized by a special algorithm, so a photo taken by the compound eye camera is obtained.
But this is too much trouble. Each camera in this compound eye camera is a complete individual, and it is too complicated to synthesize together, and the cost is too high.
Wu Hao of course they will not like this technology, what they want to do is to greatly simplify this structure. The first thing to do is to concentrate the images of all the lenses in the compound eye onto a photosensitive element, which greatly reduces the structure of the compound eye camera.
However, it is a problem how to concentrate the imaged images of these lenses onto a photosensitive element.
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