Types of microscopes
There are several types of microscopes available on the market, selection of the proper type is not a simple assignment as you would need to determine what exactly it would be used for. Below you can see all the types of modern microscopes for any scientific and hobby task.

Compound microscope
 
A compound microscope is an optical device made for magnifying objects, consists of a number of lenses forming the image by the lens or a combination of lenses positioned near the object, projecting it to the ocular lens / lenses or eyepieces. The compound microscope is the most used type of a microscope.

Optical microscope

An optical microscope, also called "light microscope", is a type of a compound microscope that uses a combination of lenses magnifying the images of small objects. Optical microscopes are the oldest type and simplest to use and manufacture.

A digital microscope has a digital CCD camera attached to it and connected to a LCD or a computer monitor. A digital microscope usually has no eyepieces to view the objects directly. The trinocular type of digital microscopes have the possibility of mounting the camera, that would be an USB microscope.
 
Digital microscope

A fluorescence microscope or "epifluorescent microscope" is a special type of a light microscope, instead of light reflection and absorption used fluorescence and phosphorescencea to view the samples and their properties.
 
Fluorescence microscope

Electron microscope
 
An electron microscope is one of the most advanced and important types of microscopes with the highest magnifying capacity. In electron microscopes electrons are used to illuminate the tiniest particles. Electron microscope is a much more powerful tool in comparison to commonly used light microscopes.

Stereo microscope
 
A stereo microscope, also referred to as "dissecting microscope", uses two objectives and two eyepieces which makes it possible to view a specimen under angles to the human eyes forming a stereo 3D optical vision.

Most compound types of light microscopes consist of the following parts: Eyepiece Lens, Arm, Base, Illuminator, Stage, Revolving Nosepiece, Objective Lenses, Condenser Lens. Details on microscope parts.

Parts of microscopes

Microscope camera is a digital type of a video capturing device mounted on light microscopes and equipped with USB or AV cable. Digital microscope cameras are usually good with trinocular microscopes.
 
Microscope camera

A few words for the beginners
The most important feature of a microscope is of course to give a larger image, and the increased image is probably the determining factor of this device. A very important parameter of optics is "aperture". We will not bore you with the formulas, in simple words - the more the aperture is, the stronger the lens refract light rays and the more of those rays pass through the lens.

A simple glass lens (the "dry", as experts say) can reach the aperture value of 0.95. If you get close to 0.65, the lens can be classified as a high aperture lens. But really high values of aperture can be achieved by immersion lenses, which, unlike the "dry" ones, contain a so-called immersion liquid. The liquid improves the optical parameters (the aperture can reach the values of 1.40)

In addition, in order to achieve quality, and above all see clear images, it is very important to have a high resolution microscope. It is required not only eliminating the distortions associated with inaccuracies in the lenses, but somehow compensating the dispersion of light, ie expansion of the "white" spectrum of seven colors of the rainbow, arises due to unequal refraction in the glass of different light waves. Achromatic lenses are used for this purpose, they only slightly distort the color. The "image" in the microscope with achromatic lens accurately conveys the colors of the viewed object.

And finally, last but not least, an absolutely necessary part of a microscope is a source of light. The simplest source would be a mirror, which directs light to the object being studied, the more advanced types of microscopes use a special bulb with predetermined parameters of the spectrum and brightness.


Microscope images

 

 In Spanish

 

Under the microscope Copyright 2011 Privacy policy