How do you distinguish an eyepiece from an objective lens in a microscope?

1.The eyepiece is light and the objective lens is heavy. 2.The housing of the eyepiece is made of plastic, and the housing of the objective lens is made of metal. 3.The objective lens is threaded, and the eyepiece has no thread and only a bulge at the end where the lens is present. (Optical microscopes in general.)

It's all like this. ）

Hello. The threaded is the objective, and the unthreaded is the eyepiece; The larger the magnification, the longer the tube is the objective, and the larger the multiple, the shorter the barrel is the eyepiece.

Both the eyepiece and the objective lens are written in white next to the lens: *20 or *100. This refers to magnification, 20x magnification or 100x magnification.

Generally, more than 100 times are required to have a high magnification lens, and 10 times and 40 times are called low magnifications. The difference between a low magnification lens and an altitude lens is the magnification. When blurry, adjust the collimation spiral straight to see the sample in the slide clearly.

Seeing more means that the field of view is wider when using a low magnification lens due to the smaller magnification, and seeing less means that the field of view is smaller when using a high magnification because the magnification is higher. Have more questions?

Magnifying glass generally refers to a convex lens, while the microscope is much more complex, in principle, it can be considered that the combination of two convex lenses is the first lens (objective).

The magnifying reality falls within the focal length of the second lens (eyepiece), causing a second magnification.

There are two kinds of lenses on the microscope, one is the eyepiece, which is the lens close to the eye, and the other is the objective lens, which is the lens that is facing the object being observed, and both lenses are marked with the number multiplied, for example, the eyepiece is marked with *10. On the other hand, the objective lens is marked with *20. Then the actual magnification of this microscope is 10*20=200x.

Generally speaking, the eyepiece is not replaced, and it is necessary to carry out microscopic operations of different magnifications, just change the objective lens, the general microscope generally has three to 5 objective lenses, and now the more popular objective lens preparation is 4x, 10x, 40x, and 100x, and the other objective lens position is empty. When you use it, you only need to turn it once, which is very convenient.

Eyepieces and objective lenses are the most critical parts of the optical part of the microscopic traveling lens, and their differences are as follows:

1. The composition of the trace chain is different. The eyepiece is composed of two parts, the upper one is called the eyepiece lens, and the lower one is called the converging lens.

or field lenses. An objective lens is a lens group that combines several lenses. 2. Different uses.

An eyepiece is an optical device used to observe the image formed by the optical system in front of you. The objective lens is the main component that determines the resolution and clarity of the microscope. 3. The appearance is different.

The eyepiece has no threads, and the objective lens has threads. 4. The installation position is different. The eyepiece is mounted above the tube and the objective lens is mounted below the tube.

。The eyepiece is a visual optical device used to observe the image formed by the optical system in front of the eyepiece, and the main function is to magnify the real image obtained by the magnification of the objective lens again. An objective lens is a combination of several lenses in order to overcome the imaging defects of a single lens and improve the optical quality of the objective.

The quality of the objective lens directly affects the imaging quality of the microscope, and it is the main component that determines the imaging quality and clarity of the microscope. Before the invention of the microscope, humans were limited to helping what the naked eye could see with the naked eye or by hand-held lenses. After the birth of the microscope, it showed a whole new world to mankind and was one of the greatest inventions of mankind.

Microscopes have opened up a whole new world of human vision, and for the first time people have seen hundreds of "new" tiny animals and plants, from the human body to plant fibers.

The interior of various things can be seen in the structure. Microscopes also help scientists discover new species and help doctors with diseases.

Microscopes generally have three objective lenses, i.e., low magnification, high magnification, and oil lens, which are fixed in the hole of the adapter plate of the connecting objective. When observing specimens, a low-magnification objective lens is used first, at this time, the field of view is larger, and the specimen is easier to detect, but the magnification is small (generally 100 times magnification), and the structure of smaller objects is not easy to observe. The magnification of the high-magnification objective lens is large (usually 400 times magnification) and can observe small objects or structures.