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Screen Printing Lens
We are a vision express metamaterial glass lens design manufacturer.Our metamaterial lens design can be used to improve the power and magnification of your glasses, contact lenses, or surgical equipment.We offer expert services ranging from consulting to design assistance and production.
The application of lens in life
Microscope
The microscope is made of the combination of two lenses with a group of lenses at both ends. The one close to the eye is called an eyepiece, and the one close to the observed object is called an objective lens. The object is placed between 1~2 times the focal length of the objective lens, and the objective lens becomes an inverted and enlarged real image. This image is within the focus of the eyepiece, and then the eyepiece becomes an upright and enlarged virtual image. After two magnifications, you can see very small objects.
The microscope is mainly used to observe very fine objects or fine parts of objects. With a microscope, people can not only see the appearance of small microorganisms but also have a very clear structure of cells, molecules, and even atoms. It is widely used in biology, chemistry, physics, medicine, and other fields, and is an indispensable tool for scientific research.
Telescope
The telescope is also composed of an objective lens and an eyepiece lens. Its objective lens focal length is relatively long and the eyepiece focal length is relatively short, which is different from the microscope. The objective lens of a telescope is usually convex, while the eyepiece can be either a convex lens or a concave lens. The telescope with the convex lens of objective lens and eyepiece is called Kepler telescope, which was invented by astronomer Kepler in 1611; The telescope whose objective lens is a convex lens and eyepiece is a concave lens is called Galileo telescope, which was invented by astronomer Galileo in 1609.
The telescope is an optical instrument used to observe distant and large objects. It extends the human perspective and enables people to observe scenes that cannot be seen with the naked eye. Telescopes are mainly used in astronomy, the military, navigation, and other fields.
Glasses
The far point of normal eyes is infinite, and the near point is about 10 cm.
The far point of myopia is a limited distance, and the near point is also closer than the normal eye, so myopia can only see the near object, but not the far object. The correction method of myopia is to wear myopia glasses made of a concave lens so that the incident parallel light can be diffused through the concave lens and then enter the eyes, and the convergence point can be moved to the retina.
Farsighted eyes can only see distant objects, but can't see near objects, also known as presbyopia. The correction method of hyperopia is to wear hyperopia glasses made of a convex lens so that the incident parallel light is refracted by the convex lens and then enters the eye, and the convergence point can be moved to the retina.
Glasses are optical instruments used to correct vision. Their invention has brought convenience to people with vision defects in life and work.
In a word, the lens is widely used in our daily life. With the combination of optical technology and other high and new technologies, the lens is playing an increasingly important role and influence in various fields of people's production, life, and scientific research. It adds splendor and convenience to our daily life.
