The structural principle, characteristics, and application range of stereomicroscopes
Stereoscopic microscope, also known as solid microscope or operating and anatomical microscope. It is a visual instrument with a positive stereoscopic effect.
The optical structure principle is composed of a shared primary objective lens, which separates the two beams of light after imaging the object from two sets of intermediate objective lenses, also known as zoom lenses, and forms a certain angle called volume angle. Generally, the angle of view is 12 degrees to 15 degrees, and then the magnification change is obtained by changing the distance between the intermediate lens groups through the imaging of each eyepiece. By using a dual channel optical path, the left and right beams in the binocular lens tube are not parallel, but have a certain angle, Provide a three-dimensional image for the left and right eyes. It essentially consists of two single tube microscopes placed side by side, with the optical axes of the two tubes forming the perspective formed when people observe an object with their binoculars, thereby forming a three-dimensional visual image.
Its characteristics are: large field of view diameter and deep focal depth, making it easy to observe all layers of the detected object; Although the magnification is not as good as a conventional microscope, its working distance is very long; It appears to be upright and convenient for practical operation, as the prism below the eyepiece inverts the image.
According to actual usage requirements, current stereoscopic microscopes can be equipped with a variety of accessories. For example, if you want to obtain a larger magnification, you can choose eyepieces and auxiliary lenses with higher magnification. A digital imaging system can be formed through various digital interfaces and digital cameras, cameras, electronic eyepieces, and image analysis software to connect to a computer for analysis and processing. The lighting system also has reflected and transmitted light illumination, and the light source includes halogen lamps Circular lamps, fluorescent lamps, cold light sources, etc.
Based on the optical principles and characteristics of stereomicroscopes, their widespread application in industrial production and scientific research is determined. For example, in the fields of biology and medicine, it is used for slicing operations and microsurgery; Used in industry for observation, assembly, inspection, and other work of small parts and integrated circuits.
