Lens

A lens (in optics) is a glass product used to refract light rays in any one direction. Convex lenses converge light rays to one point, while concave lenses, on the contrary, scatter them; These lenses are used to correct various visual impairments. See also Bifocal lenses. Contact lenses. Trifocal lenses.

In optics, a lens is a glass product used to refract light rays in any one direction. Convex lenses converge light rays to one point, while concave lenses, on the contrary, scatter them. Lenses are widely used in optical instruments and for the correction of various visual impairments.

There are several main types of lenses:

1. Convex lenses - collect light rays at one point (focus). Used in glasses to correct myopia.

2. Concave lenses - scatter light rays. Used in glasses to correct farsightedness.

3. Bifocal lenses - have two zones with different optical properties. Allows you to simultaneously correct vision for near and distance.

4. Trifocal lenses - have three zones with different focal lengths. Allows you to see clearly at three distances.

5. Contact lenses are miniature lenses worn directly on the surface of the eye.

Thus, lenses are an important optical element that is widely used in various fields to control light beams.

Lenses are optical products that are used to correct vision defects and to change the refractive power of light rays. These products are an integral part of modern medicine and optical technology.

Lenses can be convex or concave. A convex lens brings together light rays, scattering them and focusing them on