How to find the magnification of a microscope

First of all, let's take an example: when the magnification of the stereo microscope eyepiece is 10x, the zoom range of the zoom is :, and the additional objective is :

2x。Then its optical magnification is: 10 times 2 to get the lowest magnification of this microscope is:

14x, the maximum magnification is: 10 times 2 equals 90x, then the total optical magnification of this stereo microscope is 14x to 90x. Of course, this is only the actual magnification of the microscope host.

Next is the microscope digital magnification.

For example, the size of the monitor is 17 inches, and the microscope camera is 1 3, and the digital magnification of the microscope camera in the table below is: 72 times. The digital magnification of the microscope is calculated by the following formula

Based on the configuration of the stereo microscope above, the zoom is and the additional objective is 2x. The eyepiece of the measuring microscope is 1 (if there is no multiple of the camera eyepiece, it does not need to be added to the calculation). Follow the formula:

Objective lens x camera eyepiece magnification x digital magnification, the minimum magnification of digital magnification is: multiplied by 2 times 1 times 72 equals: times, and the maximum magnification of digital magnification is:

Multiplying 2 times 1 times 72 equals: 648 times. The digital magnification range is 648x.

M objective * M eyepiece = total magnification.

If the 10x objective and 10x eyepiece are used in combination, the total magnification is 100

Multiply the magnification of the eyepiece by the magnification of the eyepiece.

Objective magnification Eyepiece magnification.

Objective magnification Eyepiece magnification.

Eyepiece Objective = magnification.

The magnification of the microscope.

The magnification of the microscope refers to the product of the magnification of the eyepiece and the objective lens, and the magnification is the length or width of the object image For example, the magnification of the eyepiece is 10 times, the magnification of the objective lens is 40 times, and the magnification of the microscope is 10 40 400 times

There are two concepts of total magnification, one is optical magnification and the other is digital magnification (digital magnification is only involved when an imaging device is connected).

1. Optical magnification refers to the magnification of the object that we observe from the microscope eyepiece. The calculation of optical magnification is relatively simple, i.e., objective lens magnification * eyepiece magnification.

For example, the magnification of a stereo microscope is calculated, and the objective lens of a continuous zoom stereo microscope is usually magnified, so in the case of a 10x eyepiece, the total magnification of this microscope is 7-45x.

The calculation of biological microscope and metallurgical microscope is simpler, the general objective lens configuration is 4x, 10x, 40x, 100x, the conventional eyepiece configuration is 10x, and there are 16x, 20x, etc., as long as the multiplier of the eyepiece and the objective lens are multiplied respectively to get the total magnification.

2 Digital magnification.

Digital magnification refers to the magnification displayed on the image after the external device is connected, and the current market is mostly to use a trinocular microscope, which is connected to a computer, monitor or TV through CCD equipment for imaging observation, so as to reduce eye fatigue and facilitate sharing with others.

The formula for calculating the magnification of the microscope is: maximum magnification = maximum magnification of the objective lens * magnification of the maximum eyepiece, minimum magnification = minimum magnification of the objective lens * multiple of the minimum eyepiece, magnification of the microscope = multiple of the objective lens * multiple of the eyepiece.

A microscope is an optical instrument composed of a lens or a combination of several lenses, which is a sign that mankind has entered the atomic age. It is mainly used to magnify tiny objects and become instruments that can be seen by the human eye. Microscopes: Optical Microscopy and Electron Microscope:

The optical microscope was pioneered in 1590 by Janssen & Sons of the Netherlands. The current optical microscope can magnify the object 1600 times, and the minimum limit of resolution is 1 2 wavelength, and the length of the mechanical barrel of the domestic microscope is generally 160 mm.

The magnification of the microscope = the magnification of the objective lens (the diagonal of the computer screen, the target size of the CCD or CMOS) = the total magnification.

For example: 10 objective lens with 15-inch monitor plus 1 3-inch CCD or CMOS ** Microscope total magnification = objective 10x (15-inch target size 6mm) = 635x.

The image observed under the optical microscope is only a flat image of the structure, so its magnification refers to the length or width of the structure magnified by the corresponding multiple, not the volume of the object magnified by the corresponding multiple, nor the surface area of the object magnified by the corresponding multiple, let alone the area of the image magnified by the corresponding magnification.

Other introductions to microscopes

The target size is the diagonal size of CCD or COMS, the common CCD or COMS has 4 inches, and the actual size is as follows:

1 inch – the size of the target surface is wide and high, and the diagonal length is 16mm.

2 3 inches—the size of the target surface is wide and high, and the diagonal length is 11mm.

1 2 inches—the size of the target surface is wide and high, and the diagonal length is 8mm.

1 3 inches—the size of the target surface is wide and high, and the diagonal length is 6mm.

1 4 inches—the size of the target surface is wide and high, and the diagonal length is 4mm.

1 inch = .

The objective magnification is multiplied by the eyepiece magnification.

For example, the objective lens is 4x, the eyepiece is 5x, and the magnification is 4*5=20x.