With the progress of science and technology, we need to observe objects more clearly. We can see cells that we can't see at ordinary times through a microscope.
microscope is an optical refraction imaging system composed of two kinds of focusing lenses, which can be affected by different multiples after different objective lenses are magnified. In general, in the focal length section, the lens closer to the object becomes the objective lens, while the lens closer to the eye and the image formed is the virtual image. This kind of lens is called the objective lens, and the eyepiece and objective lens are the basic lenses composed of microscope.
Briefly share the basic optical principle and imaging system of microscope:
1.Refraction and refractive index, because light in the same medium is easy to refract in media with different density, which is caused by the different propagation speed of light in different media, but when it is not perpendicular to the transparent object, it will change the direction, so it forms a refraction angle with the normal.
2.Performance of lens. Lens is the basic component of optics. Objective lens and eyepiece are composed of objective lens. At the same time, lens is also divided into convex lens and concave lens. The main basis of microscope imaging is light. When a beam of parallel light shines on a point behind the lens, this point is called focus, and different focal lengths are adjusted according to the focus, You will get the influence of different multiples, but the image when passing through a concave lens is generally an upright virtual image, while a convex lens is an upright real image. Moreover, when using the objective lens, it is also necessary to pay attention to the optical accessories of the lens.
Moreover, according to the development of science and technology, there are all kinds of microscopes, such as full-phase microscope, polarizing microscope, reflecting microscope, etc., which are also in demand.