What are the differences between stereomicroscope and biological microscope
Stereo microscopes, also known as stereomicroscopes, differ from biological microscopes in the following ways:
1, The working distance of a stereo microscope is relatively large, usually reaching 50mm or even 150mm; The working distance range of biological microscopes for detecting objects rarely exceeds 20mm.
2, Stereoscopic microscopes can place taller and thicker objects, such as integrated circuit blocks, larger workpieces, screws, thicker objects, etc., while biological microscopes can only place thin sheets, glass slides, etc.
3, Stereoscopic microscopy has a wide depth of field range, reaching up to 10mm. By adjusting the focusing ring, clear images can be seen over a considerable range; A biological microscope may not be able to see clearly if the focusing ring is slightly rotated.
4, Stereoscopic microscopy can see three-dimensional images due to the wide range of depth of field. However, the magnification is relatively small, and the maximum magnification of a stereo microscope is generally around 200 times; The maximum magnification of a biological microscope is generally around 2000 times, and the characteristic parameters of a biological microscope are exactly opposite to those of a stereo microscope. So, the adaptability range of stereo microscope and biological microscope is different, and the structure of the lens is also different.
Reflect the principle of microscope imaging:
Stereoscopic microscope is a visual instrument with a positive stereoscopic effect. The optical structure principle of a stereo microscope is based on a shared primary objective. After imaging an object, two beams of light are separated by two sets of intermediate objective lenses, also known as zoom lenses, and form a certain angle called the volumetric angle. Generally, it is 12 to 15 degrees, and then imaged through their respective eyepieces. The magnification change of the stereo microscope is obtained by changing the distance between the intermediate lens groups. Using a dual channel optical path, the left and right beams in the binocular tube are not parallel, but have a certain angle, providing a three-dimensional image for the left and right eyes. It is essentially two single tube microscopes placed side by side, with the optical axes of the two tubes forming the perspective formed by people observing an object with their binoculars, thus forming a three-dimensional visual image.
