An optical device is a device that converts radiation due to the lenses of which it consists. Modern science has gone so far as to invent a huge number of optical instruments, the most famous of which are glasses, a microscope, a camera, a telescope.
This is not a complete list of lens applications. Scientists have also invented an optical device that can work with a scalpel, thanks to the diascope we can project an image on the screen, and the periscope was invented for observations from shelters.
Glasses are the main scope of lenses
But perhaps the most popular use of lenses is in glasses. Optical glasses correct vision, increasing its sharpness. Therefore, before purchasing a pair of framed lenses, it is worth consulting a doctor for professional advice on what diopters you need. Even if you have conducted a computer study, and based on its results, you have a rough idea of what kind of optical device you need, you should not purchase them without consulting an ophthalmologist. After all, the doctor can advise glasses with other units of optical measurement.lens power to stimulate your eyes. It is also not recommended to purchase glasses in random places - in markets or street stalls. If you wear glasses with "wrong" lenses, the process of adaptation of the eyes begins, when the body compensates for the distortion of the glasses with eye fatigue, headaches and further deterioration of vision.
Goggles
There are special devices that are designed to limit the retina from negative external influences, for example, glasses for working at computers or driving glasses. But these are rather not optical devices, because their glasses have a special coating that transforms the image. Sometimes people with visual impairments can order safety glasses with optical lenses - such devices will not only correct vision, but also take care of their protection.
The latest optical invention
Science has stepped far forward, and in 2010, American scientists developed a means of combating blindness in the elderly - an optical device that is built directly into the retina. This tiny telescope compensates for damaged areas of the eye, while the he althy part of the eye continues to be responsible for peripheral vision. The brain combines the received data into one picture - and the person sees a full-fledged image.
Invention of the optical microscope
Even at the beginning of the 17th century, Galileo invented the simplest optical device - a magnifying glass, thanks to which it was already possible to observeactivity of microorganisms. Since then, of course, the optical microscope has undergone significant transformations, and today it already has two astigmatic lenses, which do not distort the image with strong light refraction, but give an objective picture. And a modern microscope is connected to a computer using a USB connector, thanks to which it almost does not look like the invention of a brilliant Italian, but has the same principle of operation.
Optical instruments were invented to make everyday life easier for ordinary people, to help them see what the human eye is not always able to see.
