The optical device is an invention that has changed humanity

Optical device - a device that converts radiation through 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 areas of application of lenses. Scientists also invented an optical device that can work with a scalpel, thanks to a diascope, we can project an image onto a screen, and a periscope was invented for observation from shelters.

Glasses - the main sphere of application of lenses

But, perhaps, the most popular application of properties of lenses is the use of them in glasses. Optical glasses correct vision, increasing its sharpness. Therefore, before you buy a pair of lenses in the frame, you should consult a doctor for professional advice on what you need diopters. Even if you conducted a computer study, and based on its results you have an approximate idea of what kind of optical device you need, do not buy them without consulting the oculist. After all, the doctor can advise glasses with other units of measurement of the optical power of the lens to stimulate the work of your eyes. Also it is not recommended to purchase glasses in random places - in markets or street counters. If you wear glasses with "wrong" lenses, the process of adaptation of the eyes begins, when the body compensates for the distortions of the glasses by overwork of the eyes, headache and further deterioration of vision.

Protective glasses

There are special devices that are designed to limit the retina from negative external influences, for example, glasses for working with computers or driving. But these are not optical devices, because their glasses have a special coating that converts the image. Sometimes people with visual impairments can order safety goggles with optical lenses - these devices will not only correct vision, but also take care of their protection.

The newest optical invention

Science took a step forward, and in 2010, American scientists developed a tool to combat blindness in the elderly - an optical device that is built directly into the retina of the eye. This tiny telescope compensates for the damaged areas of the eye, and the healthy part of the eye continues to be responsible for peripheral vision. The brain takes the received data into one picture - and the person sees a full-fledged image.

The invention of an optical microscope

As early as the beginning of the 17th century Galileo invented the simplest optical device - a magnifying glass, due to which it was already possible to observe the activity of microorganisms. Since then, of course, the optical microscope has undergone significant transformations, and today it already has two astigmatic lenses that do not distort the image under strong light refraction, but give an objective picture. A modern microscope is connected to a computer with the help of a USB-connector, due to which it almost does not look like the invention of a brilliant Italian, but has the same principle of work in its basis.

Optical devices were invented in order to facilitate the everyday life of ordinary people, help them to consider what is not always able to see the human eye.